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1
Grunwald, Gary K., Helen M. Seagle, John C. Peters, and James O. Hill. "Quantifying and separating the effects of macronutrient composition and non-macronutrients on energy density." British Journal of Nutrition 86, no. 2 (August 2001): 265–76. http://dx.doi.org/10.1079/bjn2001404.
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The purpose of the present study was to estimate and compare the effects of macronutrient composition (relative portions of macronutrients) and of non-macronutrient components (e.g. water and fibre) on energy density (energy per unit weight) of the diets of human subjects. We used standard macronutrient energy content values to develop a simple conceptual model and equation for energy density in terms of % energy from dietary fat and % non-macronutrients by weight. To study these effects in self-selected diets of free-living subjects, we used four consecutive days of self-weighed and recorded food records for thirty-two male and thirteen female free-living adult subjects. In the range of typical human diets, the effect of % non-macronutrients by weight was several times greater than that of % energy from dietary fat, both in absolute terms and relative to daily variation in subjects' diets. Both effects were large enough to be physiologically important. Non-macronutrients (% by weight) alone explained much more of the variation in self-selected dietary energy density either between subjects (R2 95 %) or day-to-day (R2 95 %) than did % energy from dietary fat (R2 5 % and 6 % respectively). Omitting beverages gave similar results. The smaller effect of macronutrient composition on energy density of diets is mainly because alterations in macronutrient composition affect only the portion of typical dietary intake that is macronutrients (one-quarter to one-third of weight). Mathematical methods are also useful in analysing observational data and for separating effects of macronutrient composition and non-macronutrients in intervention studies. These results illustrate the importance of considering non-macronutrients in the design and analysis of experimental or observational dietary data.
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Qu, Mingkai, Weidong Li, and Chuanrong Zhang. "County-Scale Spatial Variability of Macronutrient Availability Ratios in Paddy Soils." Applied and Environmental Soil Science 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/689482.
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Macronutrients (N, P, and K) are essential to plants but also can be harmful to the environment when their available concentrations in soil are excessive. Availability ratios (available concentration/total concentration) of macronutrients may reflect their transforming potential between fixed and available forms in soil. Understanding their spatial distributions and impact factors can be, therefore, helpful to applying specific measures to modify the availability of macronutrients for agricultural and environmental management purposes. In this study, 636 topsoil samples (0–15 cm) were collected from paddy fields in Shayang County, Central China, for measuring soil properties. Factors influencing macronutrient availability ratios were investigated, and total and available concentrations of macronutrients were mapped using geostatistical method. Spatial distribution maps of macronutrient availability ratios were further derived. Results show that (1) availability of macronutrients is controlled by multiple factors, and (2) macronutrient availability ratios are spatially varied and may not always have spatial patterns identical to those of their corresponding total and available concentrations. These results are more useful than traditional soil macronutrient average content data for guiding site-specific field management for agricultural production and environmental protection.
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Hassan, Syeda Mona, Shagufta Rafique, Asif Ibrahim, Syed Khurram Hassan, Huma Haasan, Abdul Majeed, Shoaib Ahmad Siddiqi, and Naureen Naeem. "Importance of Nutrients on Growth and Development: A Review." Lahore Garrison University Journal of Life Sciences 2, no. 3 (April 22, 2020): 190–96. http://dx.doi.org/10.54692/lgujls.2018.020330.
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Macronutrients are very important for plant development and growth. They can be important constituents of various structural units and redox sensitive agents. Moreover, macronutrients can improve the yield, quality and growth of crops. Now a day, biotechnologists, plant physiologists and ecophysiologists have been investigating other blind features of these minerals, as macronutrients are involved in every aspect of plant life. Each macronutrient has its own characteristic features, and are involved in different metabolic processes of plant life.
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Komatsu, Yosuke, Yasuaki Wada, Fuka Tabata, Satomi Kawakami, Yasuhiro Takeda, Kiminori Nakamura, Tokiyoshi Ayabe, Koshi Nakamura, Takashi Kimura, and Akiko Tamakoshi. "Associations between Maternal Diet, Human Milk Macronutrients, and Breast-Fed Infant Growth during the First Month of Life in the SMILE Iwamizawa in Japan." Nutrients 15, no. 3 (January 28, 2023): 654. http://dx.doi.org/10.3390/nu15030654.
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Maternal diet may affect human milk macronutrients, but it remains to be elucidated whether this is also influential in infant growth. This study aimed to examine (1) how maternal diet influences human milk macronutrients, and (2) to what extent the variation in milk macronutrients affects infant growth during the first month of life. In 71 Japanese lactating women, maternal dietary information was collected from the brief-type self-administered diet history questionnaire, and anthropometry of mother–infant dyads was collected from medical records. Macronutrients in milk were analyzed by a Human Milk Analyzer. Maternal retinol intake was associated with the carbohydrate content in human milk at 1-month postpartum (standardized β coefficient: 0.287; p = 0.038). Moreover, the energy content in human milk was associated with an increase in the weight standard deviation score based on the WHO growth standard at 1 month of age (standardized β coefficient: 0.399; p = 0.046). Nevertheless, the milk macronutrient was not associated with the risk of infant growth abnormalities. In conclusion, a part of the maternal diet impacts macronutrient contents in human milk, but milk macronutrients have a limited effect on infant growth only within the normal growth curve during the first month of life.
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Trinh, Huong Thi, Joanna Morais, Christine Thomas-Agnan, and Michel Simioni. "Relations between socio-economic factors and nutritional diet in Vietnam from 2004 to 2014: New insights using compositional data analysis." Statistical Methods in Medical Research 28, no. 8 (April 23, 2018): 2305–25. http://dx.doi.org/10.1177/0962280218770223.
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This paper contributes to the analysis of the impact of socioeconomic factors, like food expenditure level and urbanization, on diet patterns in Vietnam, from 2004 to 2014. Contrary to the existing literature, we focus on the diet balance in terms of macronutrients consumption (protein, fat and carbohydrate) and we take into account the fact that the volumes of macronutrients are not independent. In other words, we are interested in the shares of each macronutrient in the total calorie intake. We use compositional data analysis (CODA), adapted to deal with the relative information contained in shares, to describe the evolution of diet patterns over time, and to model the impact of household characteristics on the macronutrient shares vector. We compute food expenditure elasticities of macronutrient shares, and we compare them to classical elasticities for macronutrient volumes and total calorie intake. The compositional model highlights the important role of many factors in the determination of diet choices and we will focus mainly on the role of food expenditure. Our results are consistent with the rest of the literature, but they have the advantage to highlight the substitution effects between macronutrients in the context of nutrition transition.
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Johnson, Marney C., Lauryn A. Winte, Diana G. Anzueto Guerra, Rachel Jacob, Donald C. McCurnin, Donald C. McCurnin, Cynthia L. Blanco, and Cynthia L. Blanco. "Nutritional Impact of Storage Containers on Macronutrient Integrity of Breastmilk." Journal of Breastfeeding Biology 1, no. 1 (April 9, 2019): 29–37. http://dx.doi.org/10.14302/issn.2644-0105.jbfb-19-2681.
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This study compared the effect of container material type on macronutrient changes in human breast milk (HBM) during frozen storage. HBM was collected from breastfeeding mothers and baseline macronutrients were analyzed and recorded. The HBM was aliquoted into milk storage containers of five commonly used materials (low-density polyethylene (LDPE), polypropylene (PP), glass, stainless steel, and silicone). The samples were frozen in a standard freezer (-20°F) for 30, 60, and 180 days prior to thawing and retesting macronutrient values. In the 155 samples analyzed, macronutrient changes among different types of storage materials were insignificant at 30 and 60 days of frozen storage. When comparing macronutrients at baseline to 180 days, there was a significant decrease in protein value over time in LDPE containers as compared to silicone containers (p=0.001). Likewise, there was a significant decrease in total calories from baseline to 180 days in both PP and LDPE containers compared to silicone (p=0.046 and 0.013, respectively). While not significant for short-term storage, HBM has losses of macronutrients (protein) with long-term storage in LDPE and PP plastics. These differences could have major nutritional impact on growth, particularly to infants born prematurely.
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Bellaloui, Nacer, Sukumar Saha, Jennifer L. Tonos, Jodi A. Scheffler, Johnie N. Jenkins, Jack C. McCarty, and David M. Stelly. "Effects of Interspecific Chromosome Substitution in Upland Cotton on Cottonseed Macronutrients." Plants 10, no. 6 (June 7, 2021): 1158. http://dx.doi.org/10.3390/plants10061158.
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Nutrients, including macronutrients such as Ca, P, K, and Mg, are essential for crop production and seed quality, and for human and animal nutrition and health. Macronutrient deficiencies in soil lead to poor crop nutritional qualities and a low level of macronutrients in cottonseed meal-based products, leading to malnutrition. Therefore, the discovery of novel germplasm with a high level of macronutrients or significant variability in the macronutrient content of crop seeds is critical. To our knowledge, there is no information available on the effects of chromosome or chromosome arm substitution on cottonseed macronutrient content. The objective of this study was to evaluate the effects of chromosome or chromosome arm substitution on the variability and content of the cottonseed macronutrients Ca, K, Mg, N, P, and S in chromosome substitution lines (CS). Nine chromosome substitution lines were grown in two-field experiments at two locations in 2013 in South Carolina, USA, and in 2014 in Mississippi, USA. The controls used were TM-1, the recurrent parent of the CS line, and the cultivar AM UA48. The results showed major variability in macronutrients among CS lines and between CS lines and controls. For example, in South Carolina, the mean values showed that five CS lines (CS-T02, CS-T04, CS-T08sh, CS-B02, and CS-B04) had higher Ca level in seed than controls. Ca levels in these CS lines varied from 1.88 to 2.63 g kg−1 compared with 1.81 and 1.72 g kg−1 for TM-1 and AMUA48, respectively, with CS-T04 having the highest Ca concentration. CS-M08sh exhibited the highest K concentration (14.50 g kg−1), an increase of 29% and 49% over TM-1 and AM UA48, respectively. Other CS lines had higher Mg, P, and S than the controls. A similar trend was found at the MS location. This research demonstrated that chromosome substitution resulted in higher seed macronutrients in some CS lines, and these CS lines with a higher content of macronutrients can be used as a genetic tool towards the identification of desired seed nutrition traits. Also, the CS lines with higher desired macronutrients can be used as parents to breed for improved nutritional quality in Upland cotton, Gossypium hirsutum L., through improvement by the interspecific introgression of desired seed nutrient traits such as Ca, K, P, S, and N. The positive and significant (p ≤ 0.0001) correlation of P with Ca, P with Mg, S with P, and S with N will aid in understanding the relationships between nutrients to improve the fertilizer management program and maintain higher cottonseed nutrient content.
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Jacobs, Peter, and Lucille Wood. "Macronutrients." Disease-a-Month 50, no. 2 (February 2004): 55–58. http://dx.doi.org/10.1016/j.disamonth.2004.02.001.
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Jacobs, Peter, and Lucille Wood. "Macronutrients." Disease-a-Month 50, no. 2 (February 2004): 51–54. http://dx.doi.org/10.1016/j.disamonth.2004.02.002.
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Jacobs, Peter, and Lucille Wood. "Macronutrients." Disease-a-Month 50, no. 2 (February 2004): 46–50. http://dx.doi.org/10.1016/j.disamonth.2004.02.003.
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Jacobs, Peter, and Lucille Wood. "Macronutrients." Disease-a-Month 50, no. 2 (February 2004): 69–75. http://dx.doi.org/10.1016/j.disamonth.2004.02.004.
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Jacobs, Peter, and Lucille Wood. "Macronutrients." Disease-a-Month 50, no. 2 (February 2004): 59–68. http://dx.doi.org/10.1016/j.disamonth.2004.02.005.
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Jacobs, Peter, and Lucille Wood. "Macronutrients." Disease-a-Month 50, no. 2 (February 2004): 76–78. http://dx.doi.org/10.1016/j.disamonth.2004.02.006.
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Jacobs, Peter, and Lucille Wood. "Macronutrients." Disease-a-Month 50, no. 2 (February 2004): 79–85. http://dx.doi.org/10.1016/j.disamonth.2004.02.007.
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Jacobs, Peter, and Lucille Wood. "Macronutrients." Disease-a-Month 50, no. 2 (February 2004): 86–87. http://dx.doi.org/10.1016/j.disamonth.2004.02.008.
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Jacobs, Peter, and Lucille Wood. "Macronutrients." Disease-a-Month 50, no. 2 (February 2004): 88–96. http://dx.doi.org/10.1016/j.disamonth.2004.02.009.
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Jacobs, Peter, and Lucille Wood. "Macronutrients." Disease-a-Month 50, no. 2 (February 2004): 97–106. http://dx.doi.org/10.1016/j.disamonth.2004.02.010.
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Jacobs, Peter, and Lucille Wood. "Macronutrients." Disease-a-Month 50, no. 2 (February 2004): 107–13. http://dx.doi.org/10.1016/j.disamonth.2004.02.011.
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Jacobs, Peter, and Lucille Wood. "Macronutrients." Disease-a-Month 50, no. 2 (February 2004): 114–15. http://dx.doi.org/10.1016/j.disamonth.2004.02.012.
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Northup, Brian K., Patrick J. Starks, and Kenneth E. Turner. "Stocking Methods and Soil Macronutrient Distributions in Southern Tallgrass Paddocks: Are There Linkages?" Agronomy 9, no. 6 (May 31, 2019): 281. http://dx.doi.org/10.3390/agronomy9060281.
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Broad ranges of factors (parent materials, climate, plant community, landscape position, management) can influence macronutrient availability in rangeland soils. Two important factors in production-scale paddocks are the influences of location in space and land management. This study examined plant-available macronutrients (total mineral and nitrate-N, P, S, K, Ca, and Mg) in soils, with paired sets of probes (anion and cation exchange membranes) that simulate uptake by plant roots. Data were collected from sets of paddocks of southern tallgrass prairie in central Oklahoma, managed by four stocking methods during the 2015 growing season (mid-March, growth initiation by native grasses, and early-August, time of peak living plant biomass). Macronutrient availability in the 0–7.5 cm and 7.5–15 cm depths were determined at locations in close proximity to water (water tanks and 25% of the distance between tanks and paddock mid-points (PMP)), and distances near the mid-points of paddocks (70% of the distance between water and mid-points (0.7 PMP), and PMP). All of the tested stocking methods affected levels of availability of macronutrients at different times of the growing season, and among different locations within paddocks. Such responses indicated stocking methods may not result in uniform distributions of flux in plant-available macronutrients. The overall exposure of landscapes and arrangement of features within paddocks also appeared to influence macronutrient distributions.
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Lieberman, Harris R., Victor L. Fulgoni, Sanjiv Agarwal, Stefan M. Pasiakos, and Claire E. Berryman. "Protein intake is more stable than carbohydrate or fat intake across various US demographic groups and international populations." American Journal of Clinical Nutrition 112, no. 1 (April 16, 2020): 180–86. http://dx.doi.org/10.1093/ajcn/nqaa044.
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ABSTRACT Background The optimal macronutrient composition of the diet is controversial and many adults attempt to regulate the intake of specific macronutrients for various health-related reasons. Objective The objective was to compare stability and ranges of intakes of different macronutrients across diverse adult populations in the USA and globally. Methods US dietary intake data from NHANES 2009–2014 were used to determine macronutrient intake as a percentage of total energy intake. Variability in macronutrient intake was estimated by calculating the difference between 75th and 25th percentile (Q3–Q1) IQRs of macronutrient intake distributions. In addition, intake data from 13 other countries with per capita gross domestic product (GDP) over $10,000 US dollars (USD) were used to assess variability of intake internationally since there are large differences in types of foods consumed in different countries. Results Protein, carbohydrate, and fat intake (NHANES 2009–2014) was 15.7 ± 0.1, 48.1 ± 0.1, and 32.9 ± 0.1% kcal, respectively, in US adults. The IQR of protein intake distribution (3.73 ± 0.11% kcal) was 41% of carbohydrate intake distribution (9.18 ± 0.20% kcal) and 58% of fat intake distribution (6.40 ± 0.14% kcal). The IQRs of carbohydrate and fat intake distributions were significantly (P <0.01) influenced by age and race; however, the IQR of protein intake was not associated with demographic and lifestyle factors including sex, race, income, physical activity, and body weight. International mean protein intake was 16.3 ± 0.2% kcal, similar to US intake, and there was less variation in protein than carbohydrate or fat intake. Conclusion Protein intake of the US population and multiple international populations, regardless of demographic and lifestyle factors, was consistently ∼16% of total energy, suggesting biological control mechanism(s) tightly regulate protein intake and, consequently, influence intake of other macronutrients and food constituents. Substantial differences in intake of the other macronutrients observed in US and international populations had little influence on protein intake. This trial was registered at the ISRCTN registry as ISRCTN46157745 (https://www.isrctn.com/ISRCTN4615774).
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Bardule, Arta, Inga Grinfelde, Dagnija Lazdina, Andis Bardulis, and Toms Sarkanabols. "Macronutrient leaching in a fertilized juvenile hybrid aspen (Populus tremula L. × P. tremuloides Michx.) plantation cultivated in an agroforestry system in Latvia." Hydrology Research 49, no. 2 (September 27, 2017): 407–20. http://dx.doi.org/10.2166/nh.2017.054.
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Abstract Leaching of macronutrients such as nitrogen, phosphorus and potassium from soils is of particular interest in the Baltic Sea region because of its adverse effects on water quality. The objective of this study was to evaluate macronutrient leaching in a juvenile hybrid aspen (Populus tremula L. × P. tremuloides Michx.) plantation cultivated in an agroforestry system and fertilized with biogas production residues, wastewater sludge and wood ash in hemi-boreal climate conditions. Analysis of macronutrient concentrations in the soil solution showed that annual macronutrient leaching decreased over time after the establishment of the plantation and application of fertilizers. Moreover, macronutrient leaching was affected not only by meteorological conditions, but also by the type of fertilizer used. During the five years after establishment of the plantation, nitrate-nitrogen leaching decreased up to 99.6%, phosphate-phosphorus leaching decreased up to 97.1%, but potassium ions leaching decreased up to 76.5%. Nevertheless, juvenile hybrid aspen plantations cultivated in an agroforestry system remain an important part in mitigation of leaching of macronutrients from agricultural lands in the Baltic Sea region.
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Jensen, Kim, Stephen J. Simpson, Vivi H. Nielsen, John Hunt, David Raubenheimer, and David Mayntz. "Nutrient-specific compensatory feeding in a mammalian carnivore, the mink, Neovison vison." British Journal of Nutrition 112, no. 7 (August 20, 2014): 1226–33. http://dx.doi.org/10.1017/s0007114514001664.
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Balancing of macronutrient intake has only recently been demonstrated in predators. In particular, the ability to regulate carbohydrate intake is little studied in obligate carnivores, as carbohydrate is present at very low concentrations in prey animal tissue. In the present study, we determined whether American mink (Neovison vison) would compensate for dietary nutritional imbalances by foraging for complementary macronutrients (protein, lipid and carbohydrate) when subsequently given a dietary choice. We used three food pairings, within which two macronutrients differed relative to each other (high v. low concentration), while the third was kept at a constant level. The mink were first restricted to a single nutritionally imbalanced food for 7 d and then given a free choice to feed from the same food or a nutritionally complementary food for three consecutive days. When restricted to nutritionally imbalanced foods, the mink were willing to overingest protein only to a certain level (‘ceiling’). When subsequently given a choice, the mink compensated for the period of nutritional imbalance by selecting the nutritionally complementary food in the food choice pairing. Notably, this rebalancing occurred for all the three macronutrients, including carbohydrate, which is particularly interesting as carbohydrate is not a major macronutrient for obligate carnivores in nature. However, there was also a ceiling to carbohydrate intake, as has been demonstrated previously in domestic cats. The results of the present study show that mink regulate their intake of all the three macronutrients within limits imposed by ceilings on protein and carbohydrate intake and that they will compensate for a period of nutritional imbalance by subsequently selecting nutritionally complementary foods.
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DOS SANTOS, FLAVIA CRISTINA, LEANDRO FLÁVIO CARNEIRO, MANOEL RICARDO DE ALBUQUERQUE FILHO, MÔNICA MATOSO CAMPANHA, MARIA LÚCIA FERREIRA SIMEONE, and GUILHERME MOURA FERREIRA JÚLIO. "ACÚMULO DE MASSA SECA E MACRONUTRIENTES PELO SORGO SACARINO EM DIFERENTES NÍVEIS DE ADUBAÇÃO NPK." Revista Brasileira de Milho e Sorgo 18, no. 1 (August 16, 2019): 1–13. http://dx.doi.org/10.18512/1980-6477/rbms.v18n1p1-13.
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RESUMO – Com o objetivo de determinar o acúmulo de massa seca e macronutrientes ao longo do ciclo do sorgosacarino BRS 506, em diferentes níveis de adubação NPK, foram instalados experimentos por dois anos, em Latossolo,sob irrigação. Utilizou-se o delineamento experimental de blocos ao acaso, com quatro repetições. Os tratamentosforam de quatro níveis tecnológicos, relacionados à adubação N-P2O5-K2O, em kg ha-1: muito baixo (NPK = 0-0-0);baixo (NPK = 80-50-80); médio (NPK = 160-100-160) e alto (NPK = 240-150-240). Avaliaram-se o acúmulo demassa seca e macronutrientes aos 30, 50, 70, 90 e 110 dias após plantio (DAP). No geral, foram ajustados modelospolinomiais de segundo grau. O acúmulo de massa seca e macronutrientes apresentou taxa inicial baixa, até cerca de30 DAP, e a partir daí aumentou consideravelmente, até próximo à maturação, para então se estabilizar e decrescer.No geral, o acúmulo de massa seca foi maior no nível tecnológico alto e o acúmulo de nutrientes não diferiu entre osníveis médio e alto, sendo menor para os níveis baixo e muito baixo. Recomendam-se 160-100-160 kg ha-1 de N-P2O5-K2O para produtividade satisfatória do sorgo sacarino e manutenção da fertilidade do solo, além de outras práticas quefavoreçam a ciclagem de nutrientes.Palavras-chave: Sorghum bicolor (L.) Moench, nutrição, fertilização, absorção de nutrientes.DRY MASS AND MACRONUTRIENTS ACCUMULATION OF SWEET SORGHUMIN DIFFERENT LEVELS OF NPK FERTILIZATIONABSTRACT – In order to determine the dry mass and macronutrients accumulation along the sweet sorghum BRS 506cycle, at different levels of NPK fertilization, experiments were carried out for two years in Oxisol, under irrigation.The experimental design was a randomized complete block with four replicates. The treatments comprised fourlevels of soil fertility, related to N-P2O5K2O fertilization, in kg ha-1: very low (NPK = 0-0-0); low (NPK = 80-50-80);medium (NPK = 160-100-160) and high (NPK = 240-150-240). Dry matter accumulation and macronutrients wereevaluated at 30, 50, 70, 90 and 110 days after planting (DAP). In general, polynomial models of the second degree wereadjusted. Dry matter and macronutrient accumulation presented a low initial rate, until 30 DAP, from there it increasedconsiderably until near the maturation, then stabilizing and decreasing. In general, dry mass accumulation was higherat high technological level and nutrient accumulation did not differ between medium and high levels, being lower forlow and very low levels. It is recommended to apply 160-100-160 kg ha-1 of N-P2O5-K2O for a satisfactory productivityof sorghum and maintenance of soil fertility, in addition to other practices favoring the nutrients cycling.Keywords: Sorghum bicolor (L.) Moench, nutrition, fertilization, nutrient uptake.
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Marcussi, Francisco Fernando Noronha, Roberto Lyra Villas Bôas, Leandro José Grava de Godoy, and Rumy Goto. "Macronutrient accumulation and partioning in fertigated sweet pepper plants." Scientia Agricola 61, no. 1 (February 2004): 62–68. http://dx.doi.org/10.1590/s0103-90162004000100011.
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Information on nutrient demand during each growth stage is essential for efficient application of nutrients. A pot experiment was carried out with a Typic Hapludox under greenhouse conditions in Botucatu, SP, Brazil, aiming was to determine nutrient uptake and partition of sweet pepper plants, cultivar Elisa in randomized block design with four replications. The fertigation was simulated through 2-L PET bottles (neck down with a tube and a flow regulator at the end, simulating a drip irrigation system). Four plants per replication were collected at eight growth stages (0, 20, 40, 60, 80, 100, 120 and 140 days after the seedling transplant - DAT). The period of largest extraction of nutrients for the plant occurred from 120 to 140 DAT, which coincides with the highest accumulation of dry phytomass. The highest Mg and Ca accumulation occurred in the leaves, while N, K, S and P were mostly accumulated in the fruits. Only 8 to 13% of the total amount of the accumulated macronutrientes at 140 DAT were absorbed up to the 60th DAT. Between the 61st and 100th DAT, K was the most absorbed macronutrient (60% of the macronutrients accumulated during the whole cycle). P, Ca and S were the most absorbed nutrients at the end of the cycle. Considering rates (g per plant), the most absorbed macronutrients were: N (6.6) > K (6.4) > Ca (2.6) > Mg (1.3) > S (1.1) > P (0.7).
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Gupta, Lovely, Priti Lal, and Deepak Khandelwal. "Optimizing Macronutrients in People with Diabetes." Journal of Social Health and Diabetes 06, no. 02 (November 12, 2018): 065–71. http://dx.doi.org/10.1055/s-0038-1675684.
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AbstractDiverse dietary practices and nutritional counseling strategies are followed in the management of diabetes and its comorbidities. The dietary approaches practiced in India make use of calorie and nutrient counting to ensure patient-centered nutrition therapy in diabetes management. Macronutrient modulation is a central pillar of patient-centered medical nutrition therapy (MNT). Carbohydrates (CHO) are considered as the predominant macronutrient affecting postprandial blood glucose levels. The insulin-to-CHO ratio is used for calculating mealtime insulin doses among patients on insulin regimen. The aim of this article is to highlight challenges faced in planning MNT, modifying recommended dietary allowances for persons with diabetes, and suggesting solutions to overcome these. It also aims to understand the requirement of individual macronutrients and their impact on glycemia as well as insulin dose adjustment.
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Stanbrook, Roisin, Edwin Harris, Martin Jones, and Charles Philip Wheater. "The Effect of Dung Beetle Size on Soil Nutrient Mobilization in an Afrotropical Forest." Insects 12, no. 2 (February 7, 2021): 141. http://dx.doi.org/10.3390/insects12020141.
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Despite recognition of its importance, little is known about functional aspects of soil macrofauna. Here, we investigated the effect of dung beetle body size on macronutrient movement (N, P, K, and C) from elephant dung into soil over 112 days in an Afrotropical forest. We report a large overall effect where more macronutrients are moved into soil over time when beetles are present compared to a control treatment. We also report a large effect of beetle body size on the amount of macronutrient movement, with larger dung beetles moving more nitrogen, phosphorus, potassium, and carbon from baseline measurements when compared to smaller sized dung beetles. The presence of smaller sized dung beetles showed a significant positive effect on potassium and phosphorus transfer only. We provide the first experimental evidence that the body size of African dungs directly influences the type of macronutrients recycled and discuss the importance of dung beetle body size for maintaining soil fertility.
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Carvalho, L. B., S. Bianco, and R. A. Pitelli. "Growth and mineral nutrition Of Ipomoea quamoclit." Planta Daninha 27, no. 2 (June 2009): 283–88. http://dx.doi.org/10.1590/s0100-83582009000200010.
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A greenhouse experiment was carried out from November 2006 to April 2007 at FCAV/UNESP, Brazil, aiming to study the dry mass production and the accumulation and distribution of macronutrients in Ipomoea quamoclit, an important weed for annual and perennial crops in Brazil. The plants were grown in seven liter pots with sand substrate, daily irrigated with Hoagland & Arnon nutrient solution. The experimental design was completely randomized with four replicates. The treatments corresponded to evaluation times at 14 day intervals, beginning 21 days after emergence (DAE). In each evaluation, the plants of four pots were analyzed in function of dry mass production and macronutrient content. I. quamoclit had a small dry mass and macronutrient accumulation at the beginning of the experimental stage, increasing after 77 DAE and reaching the maximum theoretical value at 146, 143, 140, 149, 142, 153, and 124 DAE, for dry mass, N, P, K, Ca, Mg, and S, respectively. K and N were the macronutrients most accumulated by I. quamoclit plants.
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Bianco, S., L. B. Carvalho, and M. S. Bianco. "Growth and mineral nutrition of Solanum americanum." Planta Daninha 28, no. 2 (June 2010): 293–99. http://dx.doi.org/10.1590/s0100-83582010000200008.
Full textAbstract:
A greenhouse trial was carried out from November 1995 to April 1996 at FCAV/UNESP, Brazil, aiming to study the dry matter production and the accumulation and distribution of macronutrients in Solanum americanum, an important weed for annual and perennial crops in Brazil. The plants were grown in seven liter pots with sand substrate, irrigated daily with Hoagland & Arnon nutrient solution. The experimental design was completely randomized with four replicates. The treatments corresponded to evaluation times at 14 day intervals, beginning 21 days after emergence (DAE). In each evaluation, the plants of four pots were analyzed for dry matter production and macronutrient content. S. americanum had a small dry matter and macronutrient accumulation at the beginning of the experimental stage, increasing after 77 DAE and reaching the maximum theoretical value at 142, 142, 164, 149, 140, 149 and 152 DAE, for dry matter, N, P, K, Ca, Mg, and S, respectively. K and N were the most accumulated macronutrients for S. americanum plants.
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Termaat, A., and R. Munns. "Use of Concentrated Macronutrient Solutions to Separate Osmotic from NaCl-specific Effects on Plant Growth." Functional Plant Biology 13, no. 4 (1986): 509. http://dx.doi.org/10.1071/pp9860509.
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The aim was to distinguish between osmotic and ion-specific effects of NaCl on plant growth and ion uptake by comparing plants grown in isosmotic solutions with and without NaCI. Preliminary experiments showed that polyethylene glycol 4000 and mannitol were unsuitable for even very-short-term studies because they caused immediate reductions in leaf elongation rate when plants were transferred from NaCl to isosmotic solutions of these compounds. However, concentrated solutions of macronutrients (modified Hoagland's nutrients) did not change the elongation rate. Barley, wheat, Egyptian clover and white clover were grown in NaCl and concentrated macronutrient solutions of matching osmotic pressures. After 14 days, plants grown in concentrated macronutrients were smaller than controls (plants in normal strength nutrient solution) but had similar root : shoot ratios. NaCl-grown plants were less than half the size of plants in concentrated macronutrients, and had higher root : shoot ratios. NaCl-induced phosphate uptake did not cause this additional reduction in shoot growth. For barley, net transport of K+, Mg2+, Ca2+ and total nitrogen from the roots (per g root dry wt) was lower in NaCl-grown plants than in controls, but uptake by the shoot (per g shoot dry wt) of these minerals was similar. By contrast, both transport and uptake of these minerals in concentrated macronutrient-grown plants resembled control plants. NaCl-grown barley and wheat plants had higher osmotic pressures in both growing and mature tissue than did controls and macronutrient-grown plants, but a lower rate of uptake of solutes generating this osmotic pressure. We raise the possibility that growth in NaCl may be limited by a reduced rate of transport of an essential nutrient to the shoot.
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Devenport, L., A. Knehans, T. Thomas, and A. Sundstrom. "Macronutrient intake and utilization by rats: interactions with type I adrenocorticoid receptor stimulation." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 260, no. 1 (January 1, 1991): R73—R81. http://dx.doi.org/10.1152/ajpregu.1991.260.1.r73.
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Corticosterone-free (adrenalectomized, ADX) and intact rats were offered experimentally compounded diets in which 65% of available calories were supplied by a single macronutrient (single-diet study). ADX impaired the intake, weight gain (especially as body fat), and efficient utilization of high-protein and high-fat diets. In contrast, no behavioral, metabolic, or compositional changes could be found among ADX rats maintained on a diet high in carbohydrates. When ADX rats were given separate sources of macronutrients (self-selection study) they did not self-select a high-carbohydrate diet. Instead, they displayed a strong fat avoidance and a relative increase in protein intake, the macronutrient they utilize least efficiently. Separate groups of ADX animals were continuously infused with 25 or 125 micrograms.kg-1.day-1 aldosterone, a specific type I adrenocorticoid receptor agonist. Type I receptor stimulation eliminated all ADX-related deficiencies found in the single-diet and self-selection studies: caloric intake, feeding efficiency, carcass composition, and macronutrient preferences were restored to or beyond the corresponding values of adrenal-intact rats. The normal rat's ability to ingest and utilize macronutrients optimally is dependent on corticosterone's stimulation of type I receptors.
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Aguilar, Ariel Santivañez, Henrique Vasque, Estefânia Martins Bardiviesso, Andres Felipe Gaona Acevedo, Ricardo Adriano Felito, Raíra Andrade Pelvine, Sara Raissa Brito Bezerra, José Murillo de Oliveira Leis, Antonio Ismael Inácio Cardoso, and Ernane Miranda Lemes. "Content and Accumulation of Macronutrients in Radish Seeds in Response to Sulfur and Organic Compost." Journal of Agricultural Studies 9, no. 3 (August 9, 2021): 291. http://dx.doi.org/10.5296/jas.v9i3.18064.
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Sulfur (S) is usually the second most accumulated nutrient in seeds of Cruciferae plant species such as the radish. Tropical soils have low S availability creating a challenge to manage plant nutrition and balanced plant development to produce high-quality seeds. This study evaluated the influence of S doses and organic compost fertilization on the content and accumulation of macronutrients in radish seeds. Eight treatments were studied in subdivided plots, where the presence (50 t ha-1) or absence of organic compost was placed in the main plot, and the S doses (0, 60, 120, 180 kg ha-1 of S) were placed in the subplots. A randomized block design with six replications was used. Seed dry weight, N, P, K, Ca, Mg, and S concentration (g kg-1 of dry matter), and the accumulation of nutrients in seeds (g plant-1) were evaluated. There was no significant effect of S doses, or organic compost, on the contents of macronutrients in radish seeds. When organic compost was not applied, great doses of S generated great dry weight and accumulation of macronutrients in the radish seeds. However, the application of organic compost increased the dry weight and the accumulation of all macronutrients in radish seeds in low S doses (up to 66 kg ha-1). Also, the presence of organic compost increased the dry weight and the concentration of macronutrients in radish seeds. The decreasing order of macronutrient content and accumulation by the radish seeds was: N > S > K > P > Ca > Mg.
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Stander, Ockert P. J., Graham H. Barry, and Paul J. R. Cronjé. "The Significance of Macronutrients in Alternate Bearing ‘Nadorcott’ Mandarin Trees." HortScience 53, no. 11 (November 2018): 1600–1609. http://dx.doi.org/10.21273/hortsci13230-18.
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The significance of macronutrients nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg) in leaves was studied in relation with their possible roles in alternate bearing of ‘Nadorcott’ mandarin (Citrus reticulata) trees over a period of three seasons. Fruit load (“on,” a heavy fruit load, vs. “off,” a light fruit load) affected the leaf macronutrient concentrations, and the amount of macronutrients removed through the harvest of fruit, i.e., the crop removal factor (g·kg−1), was consistent in both seasons. The crop removal factors were higher for each macronutrient in “off” trees—harvest of 1 kg fruit removed ≈2.3 g·kg−1 N, 0.3 g·kg−1 P, 3.1 g·kg−1 K, 1.0 g·kg−1 Ca, and 0.4 g·kg−1 Mg, compared with 1.3 g·kg−1 N, 0.2 g·kg−1 P, 1.7 g·kg−1 K, 0.6 g·kg−1 Ca, and 0.2 g·kg−1 Mg in “on” trees. Fruit load per tree (kg/tree) of 84, 110, and 52 kg/tree in “on” trees, however, removed ≈217 g/tree N, 28 g/tree P, 296 g/tree K, 100 g/tree Ca, and 35 g/tree Mg, which was 1.5–6 times more than that of fruit loads of 14, 71, and 16 kg/tree in “off” trees. In “off” trees, N, P, and K, and in “on” trees, Ca accumulated in leaves to between 20% and 30% higher concentrations in season 1, but the higher macronutrient status did not manifest in or consistently correlate with intensity of summer vegetative shoot development in the current season, or intensity of flowering in the next season, the two main determinants of fruit load in ‘Nadorcott’ mandarin. Apart from some anomalies, the concentrations of macronutrients in leaves were unaffected by de-fruiting and foliar spray applications of N and K to “on” trees, and showed no consistent relationship with treatment effects on parameters of vegetative shoot development and flowering. Leaf macronutrients in alternate bearing ‘Nadorcott’ mandarin trees, fertilized according to grower standard practice, are not related to differences in flowering and vegetative shoot development, and appear to be a consequence of fruit load and not a determinant thereof.
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Lauderdale, Jonathan Maitland, Rogier Braakman, Gaël Forget, Stephanie Dutkiewicz, and Michael J. Follows. "Microbial feedbacks optimize ocean iron availability." Proceedings of the National Academy of Sciences 117, no. 9 (February 18, 2020): 4842–49. http://dx.doi.org/10.1073/pnas.1917277117.
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Iron is the limiting factor for biological production over a large fraction of the surface ocean because free iron is rapidly scavenged or precipitated under aerobic conditions. Standing stocks of dissolved iron are maintained by association with organic molecules (ligands) produced by biological processes. We hypothesize a positive feedback between iron cycling, microbial activity, and ligand abundance: External iron input fuels microbial production, creating organic ligands that support more iron in seawater, leading to further macronutrient consumption until other microbial requirements such as macronutrients or light become limiting, and additional iron no longer increases productivity. This feedback emerges in numerical simulations of the coupled marine cycles of macronutrients and iron that resolve the dynamic microbial production and loss of iron-chelating ligands. The model solutions resemble modern nutrient distributions only over a finite range of prescribed ligand source/sink ratios where the model ocean is driven to global-scale colimitation by micronutrients and macronutrients and global production is maximized. We hypothesize that a global-scale selection for microbial ligand cycling may have occurred to maintain “just enough” iron in the ocean.
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Wang, Xuemin, Dylan M. Glubb, and Tracy A. O’Mara. "Dietary Factors and Endometrial Cancer Risk: A Mendelian Randomization Study." Nutrients 15, no. 3 (January 24, 2023): 603. http://dx.doi.org/10.3390/nu15030603.
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Given the strong association between obesity and endometrial cancer risk, dietary factors may play an important role in the development of this cancer. However, observational studies of micro- and macronutrients and their role in endometrial cancer risk have been inconsistent. Clarifying these relationships are important to develop nutritional recommendations for cancer prevention. We performed two-sample Mendelian randomization (MR) to investigate the effects of circulating levels of 15 micronutrients (vitamin A (retinol), folate, vitamin B6, vitamin B12, vitamin C, vitamin D, vitamin E, β-carotene, calcium, copper, iron, magnesium, phosphorus, selenium, and zinc) as well as corrected relative macronutrient intake (protein, carbohydrate, sugar and fat) on risks of endometrial cancer and its subtypes (endometrioid and non-endometrioid histologies). Genetically predicted vitamin C levels were found to be strongly associated with endometrial cancer risk. There was some evidence that genetically predicted relative intake of macronutrients (carbohydrate, sugar and fat) affects endometrial cancer risk. No other significant association were observed. Conclusions: In summary, these findings suggest that vitamin C and macronutrients influence endometrial cancer risk but further investigation is required.
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Abdelhamid, Enas R., Alyaa H. Kamhawy, Alshaimaa A. Elkhatib, Amr S. Megawer, Amal I. El Shafie, Yasmin G. El Gendy, and Dina E. A. Rabie. "Breast Milk Macronutrients in Relation to Infants’ Anthropometric Measures." Open Access Macedonian Journal of Medical Sciences 8, B (June 25, 2020): 845–50. http://dx.doi.org/10.3889/oamjms.2020.4980.
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BACKGROUND: Breast milk (BM) is the main nutritional source for newborns before they are capable to eat and consume other foods. BM has carbohydrates, lipids, complex proteins, and other biologically active components which have a direct effect on infant growth.
AIM: The aim of the study was to correlate anthropometric data of the infant to macronutrients in BM (fat, protein, and carbohydrates) and to find some modifiable issues affecting macronutrient contents of BM for the benefits of upcoming infants.
METHODS: One hundred breastfeeding mothers participated in the study, they were recruited from the outpatient clinic, El Demerdash Hospital, Ain Shams University, from September 2019, to December 2019. BM was expressed by an electric pump, macronutrient content was assessed. Anthropometric data of the babies and mothers were obtained, gestational age, parity, age of the women, and the route of birth were recorded.
RESULTS: For the macronutrients content of milk, a positive significant correlation was observed between BM fat, protein, and lactose. Infants’ body mass index (BMI) was negatively related to the fat content of BM, while no relation was found between BMI and protein or lactose content of the milk. BM fat content was negatively correlated with gestational age and maternal age. Positive correlations were found between BMI and protein, lactose and infant age. Protein content was negatively correlated with parity. No impact of infant’s sex on BM composition and as regards maternal diet, high protein consumption leading to increase BM protein content.
CONCLUSIONS: The current study confirms that BM macronutrient composition has a wide variability; this variability is associated with each macronutrient, respectively. To improve BM composition, one could aim for improving the nutritional balance in lactating women, especially for protein intake. More well-designed longitudinal studies about factors that influence human milk compositions are warranted.
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Northup, Brian K., Patrick J. Starks, and Kenneth E. Turner. "Soil Macronutrient Responses in Diverse Landscapes of Southern Tallgrass to Two Stocking Methods." Agronomy 9, no. 6 (June 20, 2019): 329. http://dx.doi.org/10.3390/agronomy9060329.
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Macronutrient (N, P, S, K, Ca, and Mg) availability and distribution in soils of grassland ecosystems are affected by diverse factors, including landscape position, climate, and forms of management. This study examined flux in plant-available macronutrients in production-scale (60 to 80 ha) paddocks of southern tallgrass prairie of central Oklahoma, United States, managed (2009–15) under two contrasting stocking methods (continuous yearlong; rotational stocking among 10 sub-paddocks). Macronutrient availability within the 0–7.5 cm and 7.5–15 cm soil depths were determined with sets of anion-cation exchange membrane probes at 16 locations within paddocks, oriented along transects from water sources to far corners. No clear overall effect related to stocking method was recorded for all macronutrient distributions. The only significant stocking method × location interaction occurred for K (p = 0.01). All other macronutrients displayed significant (p < 0.08) location effects that were common across stocking methods. Effects relatable to stocking method occurred in interactions with soil depth or time of year (p < 0.10), but responses of macronutrient flux to stocking method in these interactions varied. Higher flux occurred in available S, Ca, and Mg in proximity (<24 m) to water sources, which may be related to grazing, but local features of the landscape may also have been involved. More attention to landscape features included within paddocks, and standardized organization of water and other features within paddocks, would improve the potential to define grazing effects on macronutrient distribution.
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Park, Hyerim, Anthony Kityo, Yeonjin Kim, and Sang-Ah Lee. "Macronutrient Intake in Adults Diagnosed with Metabolic Syndrome: Using the Health Examinee (HEXA) Cohort." Nutrients 13, no. 12 (December 14, 2021): 4457. http://dx.doi.org/10.3390/nu13124457.
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Macronutrient intake is important in the prevention and management of metabolic syndrome (MetS). This study aimed to evaluate total energy and macronutrient intake of participants diagnosed with MetS at recruitment of the health examinees (HEXA) cohort, considering the plant and animal sources of each macronutrient. We included 130,423 participants aged 40–69 years for analysis. Odds ratios (OR) and 95% confidence intervals (CI) were estimated to evaluate the intake of macronutrients stratified by gender. Energy and macronutrient intake were estimated by linking food frequency questionnaire data to the Korean food composition database, and were calculated separately for plant and animal foods. Low energy (men: OR = 0.95, 95% CI: 0.92–0.98; women: OR = 0.97, 95% CI: 0.95–0.99), and fat intake (men: OR = 0.93, 95% CI: 0.90–0.96; women: OR = 0.80, 95% CI: 0.77–0.83) were observed. Only postmenopausal women had lower intake of total energy (OR = 0.95, 95% CI: 0.92–0.97), whereas low fat intake was observed in all women (OR = 0.80, 95% CI: 0.77–0.83). For carbohydrate intake, the OR were 1.14 (95% CI: 1.08–1.22) and 1.17 (95% CI: 1.08–1.27) among women in their 50s and 60s, respectively. Protein intake was low (OR = 0.90, 95% CI: 0.86–0.95; and OR = 0.88, 95% CI: 0.82–0.94) among women in their 50s and 60s, respectively. High intake of plant carbohydrates in women (OR = 1.16, 95% CI: 1.12–1.20), and plant protein in both genders (OR = 1.09, 95% CI: 1.05–1.13) were observed, but low intake of total energy, fat, and animal-source carbohydrates in both genders was also observed. Fat intake was low regardless of food source. In conclusion, high consumption of plant-source macronutrients, and low consumption of animal-source macronutrients was observed in Korean adults diagnosed with MetS. Attention should be directed to plant sources of carbohydrates and proteins when designing population interventions for metabolic syndrome reduction in Korea.
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Salavati, Nastaran, Marian K. Bakker, Fraser Lewis, Petra C. Vinke, Farya Mubarik, JanJaap H. M. Erwich, and Eline M. van der Beek. "Associations between preconception macronutrient intake and birth weight across strata of maternal BMI." PLOS ONE 15, no. 12 (December 2, 2020): e0243200. http://dx.doi.org/10.1371/journal.pone.0243200.
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Introduction Maternal nutrition during pregnancy is linked with birth outcomes including fetal growth, birth weight, congenital anomalies and long-term health through intra-uterine programming. However, a woman’s nutritional status before pregnancy is a strong determinant in early embryo-placental development, and subsequently outcomes for both mother and child. Therefore, the aim of this study was to investigate the association between dietary macronutrient intake in the preconception period with birth weight. Methods We studied a group of 1698 women from the Dutch Perined-Lifelines linked birth cohort with reliable detailed information on preconception dietary macronutrient intake (using a semi quantitative food frequency questionnaire) and data available on birth weight of the offspring. Birth weight was converted into gestational age adjusted z-scores, and macronutrient intake was adjusted for total energy intake using the nutrient residual method. Preconception BMI was converted into cohort-based quintiles. Multivariable linear regression was performed, adjusted for other macronutrients and covariates. Results Mean maternal age was 29.5 years (SD 3.9), preconception BMI: 24.7 kg/m2 (SD 4.2) and median daily energy intake was 1812 kcal (IQR 1544–2140). Mean birth weight was 3578 grams (SD 472). When adjusted for covariates, a significant association (adjusted z score [95% CI], P) between polysaccharides and birth weight was shown (0.08 [0.01–0.15], 0.03). When linear regression analyses were performed within cohort-based quintiles of maternal BMI, positive significant associations between total protein, animal protein, fat, total carbohydrates, mono-disaccharides and polysaccharides with birth weight were shown in the lowest quintile of BMI independent of energy intake, intake of other macronutrients and covariates. Conclusion Out of all macronutrients studied, polysaccharides showed the strongest association with birth weight, independent of energy intake and other covariates. Our study might suggest that specifically in women with low preconception BMI a larger amount of macronutrient intake was associated with increased birth weight. We recommend that any dietary assessment and advise during preconception should be customized to preconception weight status of the women.
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Sholehah, Diana Nurus, Eko Setiawan, Dini Ermavitalini, Miratul Khasanah, Edy Setiti Wida Utami, Sucipto Hariyanto, and Hery Purnobasuki. "Enhancing fruit quality of three Physalis sp. throughout foliar nutrition." Plant, Soil and Environment 68, No. 5 (May 27, 2022): 231–36. http://dx.doi.org/10.17221/107/2022-pse.
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Foliar nutrients containing macronutrients, micronutrients and a combination of both were applied to Physalis peruviana, P. alkekengi and P. ixocarpa to determine their effect on fruit quality. A randomised complete block design study was conducted in a greenhouse on Madura Island, Indonesia. This study showed significant interactions between Physalis species and foliar nutrition to the physicochemical character of the fruit. Each species responded differently to the given nutrients. The combination of 1 g/L macronutrient (P and K) and 0.0625 g/L micronutrients (Zn, Fe, Cu, B, Mo and Mn) resulted in the highest fruit antioxidant activity, vitamin C, total soluble solids and redness of the three Physalis species. Generally, macronutrients and micronutrients in combination can be recommended to increase the quality of Physalis fruit.
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Souza, Renata Patrícia Dias, Rodinei Facco Pegoraro, Sidnei Tavares Reis, Victor Martins Maia, and Regynaldo Arruda Sampaio. "Partition and macronutrients accumulation in pineapple under nitrogen doses and plant density." Comunicata Scientiae 10, no. 3 (November 1, 2019): 384–95. http://dx.doi.org/10.14295/cs.v10i3.2604.
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Studies related to the absorption and exportation capacity of macronutrients by irrigated pineapple are essential for the definition of adequate doses and fertilization management. The objective of this study was to evaluate the accumulation of biomass and macronutrients in the compartments (leaves, shoot, root, seedlings/slip, crown/top, and fruit) of ‘Vitória’ pineapple irrigated in the semiarid region after the use of nitrogen doses and population densities. The treatments, arranged in randomized blocks with three replicates, arranged in a 5x4 factorial scheme, consisted of five nitrogen doses (0, 5, 10, 15 and 20 g per plant) and four population densities (51,282, 76,923, 90,909, and 126,984 plants ha-1). The accumulation of biomass and macronutrients in the pineapple compartments was evaluated at the end of the growing cycle. The increase of N doses combined with the increase of the plant population promoted a linear increase in the accumulation of biomass and macronutrients by the pineapple plants. The leaves presented greater accumulation of macronutrients, followed by the seedlings, shoot, fruit, crown, and roots. The pineapple presented the following decreasing order of macronutrient absorption: K> N> Ca> P> Mg>S. At the dose of 20 g per plant of N and population of 126,984 plants ha-1 were exported from the area by fruits, 1,311 (12%), 150 (9%), 144 (11%), 52 (11%), 46 (12%) and 36 (12%) kg ha-1 of K, N, Ca, P, Mg, and S, respectively; and by the shoots, 2,426 (22%), 480 (29%), 147 (11%), 101 (21%), 67 (18%), and 45 (15%) kg ha-1 of K, N, Ca, P, Mg, and S, respectively.
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Donovan, Cynthia, and Jaquelino Massingue. "Illness, Death, and Macronutrients: Adequacy of Rural Mozambican Household Production of Macronutrients in the Face of HIV/AIDS." Food and Nutrition Bulletin 28, no. 2_suppl2 (June 2007): S331—S338. http://dx.doi.org/10.1177/15648265070282s212.
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Background As the public sector and civil society develop intervention programs to deal with the HIV/ AIDS epidemic, there has been an increasing emphasis on the relationship between nutrition and the disease. Drug interventions may be ineffective, and the progression from HIV infection to full-blown AIDS may be accelerated without adequate nutrition. Mozambique is still fighting an increasing prevalence rate of HIV, including in rural areas. Rural households in Mozambique rely heavily on their own agricultural production for the basic macronutrients. Objectives To evaluate the extent to which household agricultural production of basic staples meets overall household needs for major macronutrients, comparing households affected and not directly affected by HIV/ AIDS and other major illnesses over two time periods. Methods This research analyzes nationally representative panel data from rural household surveys conducted in 2002 and 2005 to evaluate whether households that have suffered the chronic illness or illness-related death of prime-age adult members (15 to 49 years of age) are more vulnerable to macronutrient gaps. Results Households in the South and in the North with a male illness or death in 2002 produced significantly less macronutrients from crops in 2005 than nonaffected households. These households also had significantly lower income per adult equivalent. Conclusions Mortality or illness from HIV/AIDS affects the ability of agricultural households dependent on own-food production to produce macronutrients. Interventions to improve access to food may be needed for affected households, particularly in light of their inability to recover over time. More analysis is needed to understand income sources, crop diversification, and access to macronutrients through the market.
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Kopiński, Jerzy, and Agata Witorożec. "RESOURCES OF MAIN MACRONUTRIENTS IN NATURAL FERTILIZERS IN POLAND." Annals of the Polish Association of Agricultural and Agribusiness Economists XXIII, no. 2 (April 15, 2021): 64–74. http://dx.doi.org/10.5604/01.3001.0014.8382.
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Results of analysis of the consumption of particular macronutrients in natural fertilizers in Poland are discussed in the paper. Analysis included the consumption of nitrogen, phosphorus and potassium in particular types of natural fertilizers, both in relation to the fertilized area and agricultural land. The study period covered the years 2018-2019. The amount of macronutrient resources of natural fertilizers was determined at a voivodship level. As a result of data analysis, it was shown that more than 80% of NPK macronutrients were applied to the soil in the form of manure. In Poland, total NPK consumption in manure was estimated at about 80 kg/ha UAA, including 27.4 kg of N, 17.3 kg of P2O5 and 33.5 kg of K2O. The highest doses of NPK components in natural fertilizers, on a fertilized area, were applied in the Lubuskie, Podlaskie, Lubelskie and Warmińsko-Mazurskie voivodeships, as well as the Wielkopolskie Voivodeship. In none of the voivodeships did the average dose of nitrogen used in manure exceed the permissible level of 170 kg of N/ha. In terms of intensity of macronutrient fertilization from natural fertilizers, the Podlaskie Voivodeship came first, which confirms its importance in terms of animal production and its significance for the development of bioeconomy in Poland.
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Surono, Ingrid S., Fasli Jalal, Syukrini Bahri, Andreas Romulo, Pratiwi Dyah Kusumo, Erida Manalu, Yusnita, and Koen Venema. "Differences in immune status and fecal SCFA between Indonesian stunted children and children with normal nutritional status." PLOS ONE 16, no. 7 (July 29, 2021): e0254300. http://dx.doi.org/10.1371/journal.pone.0254300.
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We recently showed that the gut microbiota composition of stunted children was different from that of children with normal nutritional status. Here, we compared immune status and fecal microbial metabolite concentrations between stunted and normal children, and we correlated macronutrient intake (including energy), metabolites and immune status to microbiota composition. The results show that macronutrient intake was lower in stunted children for all components, but after correction for multiple comparison significant only for energy and fat. Only TGF-β was significantly different between stunted children and children of normal nutritional status after correction for multiple comparisons. TNF-alpha, IL-10, lipopolysaccharide binding protein in serum and secretory IgA in feces were not significantly different. Strikingly, all the individual short-chain and branched-chain fatty acids were higher in fecal samples of stunted children (significant for acetate, valerate and total SCFA). These metabolites correlated with a number of different microbial taxa, but due to extensive cross-feeding between microbes, did not show a specific pattern. However, the energy-loss due to higher excretion in stunted children of these metabolites, which can be used as substrate for the host, is striking. Several microbial taxa also correlated to the intake of macronutrients (including dietary fibre) and energy. Eisenbergiella positively correlated with all macronutrients, while an uncharacterized genus within the Succinivibrionaceae family negatively correlated with all macronutrients. These, and the other correlations observed, may provide indication on how to modulate the gut microbiota of stunted children such that their growth lag can be corrected. Trail registered at https://clinicaltrials.gov/ct2/show/NCT04698759.
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Shahkoomahally, Shirin, Jose X. Chaparro, Thomas G. Beckman, and Ali Sarkhosh. "Influence of Rootstocks on Leaf Mineral Content in the Subtropical Peach cv. UFSun." HortScience 55, no. 4 (April 2020): 496–502. http://dx.doi.org/10.21273/hortsci14626-19.
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The rootstock is an essential element for orchard management, influencing scion growth, nutrient concentration, and fruit quality. Seasonal variations in leaf nutrients of ‘UFSun’ grafted on five different rootstocks (‘Flordaguard’, ‘Barton’, ‘MP-29’, ‘P-22’, and ‘Okinawa’) were investigated during the 2017–18 growing season in Citra, FL. There was no significant variation in the macronutrient concentrations (N, P, K, Mg, Ca, and S) among different rootstocks; however, ‘UFSun’ on ‘Okinawa’ and ‘Flordaguard’ showed greater concentrations of Ca, K, and Mg concentration than other rootstocks. In contrast, ‘Flordaguard’ showed less potential to accumulate P as compared with other rootstocks. The Ca concentration was lowest in ‘MP-29’ and ‘Barton’ in April and June. The concentration of macronutrients (N, P, K, Mg, Ca, and S) in leaves was greater in April and October than in December and June. With respect to rootstocks, macronutrients in December and June were the highest in ‘Okinawa’ and the lowest in ‘Barton’. In April, the lowest concentration of macronutrient was recorded in ‘Barton’, whereas the highest concentrations were found in ‘P-22’, ‘Okinawa’, and ‘Flordaguard’. The highest leaf micronutrient concentrations were found in ‘MP-29’ and ‘Barton’, and the lowest in ‘Okinawa’ and ‘Flordaguard’ in June and October. For all rootstocks, concentrations of micronutrients increased between leaf growth in April and senescence in October. The micronutrient concentrations of leaves decreased during December. The widest dynamic changes during the vegetative cycle were found on ‘P-22’. Seasonal trends were more consistent for micronutrients than for macronutrients.
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Sulistyowati, Etik, Achmad Rudijanto, Setyawati Soeharto, and Dian Handayani. "The Identification of Characteristic Macro- and Micronutrients and the Bioactive Components of Indonesian Local Brown Rice as a Functional Feed in Obesity Nutrition Therapy." Current Nutrition & Food Science 16, no. 4 (July 13, 2020): 494–500. http://dx.doi.org/10.2174/1573401315666190328223626.
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Background: Public interest and awareness of the use of functional food as an obesity nutrition therapy are increasing. Objective: This study aims to analyze the content of energy, macronutrients, minerals (magnesium, manganese, and potassium), and bioactive components (fiber, β-glucan) in Indonesian varieties of brown rice compared to white rice, to provide precise information on the nutritional content of brown rice as a functional food in obesity nutrition therapy. Methods: This research took the form of a laboratory analysis to identify the content of energy, macronutrients, fiber, β-glucan, magnesium, manganese, and potassium in brown rice varieties Sinta Nur. The energy content of rice was analyzed using bomb calorimetry; macronutrients were analyzed by spectrophotometry, gravimetric extraction, and acid-base titration; dietary fiber, and β-glucan were analyzed by enzymatic methods; and mineral contents were analyzed by spectrophotometry and atomic absorption spectrophotometry. Results: The results demonstrated that the energy and macronutrient content of brown rice are higher than white rice. However, brown rice also has dietary fiber and β-glucan contents that are 5 times higher than white rice. For the macronutrient, in brief, magnesium content was 7.7 times higher, potassium was 5.7 times higher, and manganese was 1.59 times higher within the brown rice. Cooked rice is known for lower nutritional value, but the nutritional value of Indonesian brown rice is still higher than white rice. Conclusion: The results of this study indicate that brown rice has nutrient content and bioactive components that allegedly contribute to higher obesity intervention than white rice.
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Bezerra, Marlene A. F., Lourival F. Cavalcante, Francisco T. C. Bezerra, Walter E. Pereira, Flaviano F. de Oliveira, and Aldeir R. Silva. "Calcium in the mineral nutrition of yellow passion fruit cultivated in lined pits and with saline water." Revista Brasileira de Engenharia Agrícola e Ambiental 25, no. 4 (April 2021): 256–63. http://dx.doi.org/10.1590/1807-1929/agriambi.v25n4p256-263.
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ABSTRACT Nutritional status is an important tool in salinity management, because salt stress interferes with both the absorption and the assimilation of mineral nutrients by plants. The objectives of this experiment were to evaluate the effects of water salinity, lateral protection of pits against water losses and calcium doses on the leaf concentration of macronutrients and sodium of yellow passion fruit cv. BRS GA1. The treatments were arranged in a randomized block design in split plots in a 2 × (2 × 5) factorial scheme, corresponding to water salinity (0.3 and 4.0 dS m-1) in the main plot, and the combinations between lateral protection of pits (without and with) and calcium doses (0, 30, 60, 90 and 120 kg ha-1) in the subplots. Leaf concentrations of macronutrients and sodium were determined at the phenological stage of full flowering. Irrigation of yellow passion fruit with 4.0 dS m-1 water decreased the leaf concentrations of macronutrients. The lining of the pits compromised macronutrient concentration in the plants. Calcium fertilization is recommended for yellow passion fruit cultivated in Entisol with low calcium concentration at the dose of 60 kg ha-1, because it raises nitrogen and calcium concentrations in plants irrigated with non-saline water and magnesium and sulfur concentrations in those irrigated with saline water. Calcium attenuates salt stress because it promotes the accumulation of macronutrients in yellow passion fruit under saline conditions.
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Silva Júnior, Gabriel B. da, Eduardo M. dos Santos, Roberto L. Silva, and Ítalo H. L. Cavalcante. "Nutritional status and fruit production of Carica papaya as a function of coated and conventional urea." Revista Brasileira de Engenharia Agrícola e Ambiental 20, no. 4 (April 2016): 322–28. http://dx.doi.org/10.1590/1807-1929/agriambi.v20n4p322-328.
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ABSTRACT As a strategy to minimize N losses in the soil, mineral N sources, such as polymer-coated urea, have been studied as possibility to increase the synchronization of N release by the fertilizer and its absorption by plants. Thus, this study aimed to evaluate the contents of macronutrients and the production of Formosa papaya as a function of sources and doses of N fertilizer applied as top-dressing in the region of Bom Jesus-PI, Brazil. The treatments were arranged in a 2 x 4 factorial scheme corresponding to N sources (coated urea and conventional urea) and N doses (350, 440, 530 and 620 g plant-1 of N), with four replicates and four plants per plot. The contents of macronutrients in the leaf dry matter and fruit production were evaluated. The sources and doses of top-dressing N fertilization incremented the leaf contents of macronutrients and the production of Formosa papaya hybrid Caliman 01. Under the experimental conditions and based on the macronutrient contents considered as adequate for crop nutrition, associated with maximum fruit production (8.08 kg plant-1), the supply of 525 g of N plant-1 is recommended in the form of coated urea.
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Barroso, Laiana Keylha Alexandre, Geovanna Torres De Paiva, Raquel Bezerra Barbosa De Moura, Renan Gondim Araújo, Flávia Nunes de Lima Barroso, Elivane Martins De Lima, and Elisiandre Martins De Lima. "Consumo de macronutrientes em idosos hospitalizados / Consumption of macronutrients in hospitalized elderly." Brazilian Journal of Development 8, no. 3 (March 25, 2022): 20777–93. http://dx.doi.org/10.34117/bjdv8n3-333.
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Kelly, Owen, Jennifer Gilman, and Jasminka Ilich. "Utilizing Dietary Nutrient Ratios in Nutritional Research: Expanding the Concept of Nutrient Ratios to Macronutrients." Nutrients 11, no. 2 (January 28, 2019): 282. http://dx.doi.org/10.3390/nu11020282.
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We recently showed that using micronutrient ratios in nutritional research might provide more insights into how diet affects metabolism and health outcomes, based on the notion that nutrients, unlike drugs, are not consumed one at a time and do not target a single metabolic pathway. In this paper, we present a concept of macronutrient ratios, including intra- and inter-macronutrient ratios. Macronutrient intakes from food only, from the What We Eat in America website (summarized National Health and Nutrition Examination Survey data) were transposed into Microsoft Excel to generate ratios. Overall, the dietary ratios of macronutrients may be more revealing and useful in epidemiology and in basic nutritional research than focusing on individual protein, fat, and carbohydrate intakes. While macronutrient ratios may be applied to all types of nutritional research, nutritional epidemiology, and, ultimately, dietary guidelines, the methodology required has not been established yet. In the meantime, intra- and inter-macronutrient ratios may serve as a measure of individual and total macronutrient quality.