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Готові списки джерел за темами / Acid content

Добірка наукової літератури з теми "Acid content"

Автор: Grafiati

Опубліковано: 13 вересня 2021

Оновлено: 1 лютого 2022

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Статті в журналах з теми "Acid content":

1

Bouderbala, Sherazede, and Malika Bouchenak. "Olive or salmon oils affect differently the storage and transport of fatty acids by VLDL in hypercholesterolemic rats fed different proteins." Nutrition & Food Science 46, no. 2 (March 14, 2016): 190–203. http://dx.doi.org/10.1108/nfs-08-2015-0096.

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Purpose – The purpose of this study is to compare the effect of olive or salmon oil on the hepatic storage and transport of fatty acids by very-low-density lipoproteins (VLDL). Design/methodology/approach – In all, 24 male Wistar rats (80 ± 5 g) were fed a 0.5 per cent cholesterol-enriched diet with either 20 per cent casein (C) or chickpea (CP) proteins with 10 per cent olive (O) or salmon (S) oil for 28 days. Findings – In VLDL-triacyglycerols fatty acids, oleic acid content was higher in CPS as compared to that in CS or CPO and lower in CS and CPO than that in CO; linoleic acid content was higher in all groups; arachidonic acid content was higher in CS and CPO as compared to that in CO. In the liver, TG fatty acids content was lower in CPO or CPS as compared to that in CO or CS; oleic and arachidonic acid contents were lower in CPS than that in CPO; linoleic acid content was lower in CS, CPS and CPO than that in CO, CPO and CO. In liver, phospholipid fatty acid, oleic and arachidonic acid contents were lower in CPS than that in CS; oleic, linoleic and arachidonic acid contents were lower in CPO compared to that in CO. In liver, cholesteryl esters fatty acids, oleic, linoleic and arachidonic acids contents were higher in CPS as compared to that in CS; oleic, linoleic and arachidonic acid contents were lower in CS as compared to that in CO; linoleic and arachidonic acid contents were lower in CPS than that in CPO. Originality/value – A cholesterol-enriched diet containing casein or chickpea proteins combined with olive or salmon oil affects the hepatic storage and transport of polyunsaturated and monounsaturated fatty acids by VLDL.

2

Pringgenies, Delianis, Richardus Mahatmada Indrajati, and Ali Djunaedi. "STUDY OF NUTRITIONAL CONTENTS OF SEA URCHIN GONAD FROM DRINI BEACH, GUNUNG KIDUL, YOGYAKARTA." Jurnal Kelautan: Indonesian Journal of Marine Science and Technology 13, no. 3 (December 25, 2020): 219–27. http://dx.doi.org/10.21107/jk.v13i3.7808.

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ABSTRACTThis paper aims to determine the types and contents of protein, fatty acids, amino acids and protein in the gonads of Arbacia lixula, Colobocentrotus atratus, Heterocentrotus trigonarius and Echinotrix diadema from the waters of Drini, Gunung Kidul, Yogyakarta. Kjedal method was used to analyze the protein content, while GC and HPLC methods were employed to analyze amino acids in this study. The results showed that the protein contents of each sample, consequently from highest to lowest, were Heterocentrotus trigonarius (13.3 %), Echinotrix diadema (10.86), Colobocentrotus atratus (10.41) and Arbacia lixula (9.90%). Amino acids analysis from all identified both saturated fatty acids, consisting of lauric acid, myristic acid, palmitic acid, stearic acid, arachidonic acid, lignoceric acid, as well as non-saturated fatty acids, consisting of palmitoleic acid, oleic acid, linoleic acid, erucic acid, EPA, and DHA. The highest contents of non-saturated fatty acids were identified in Colobocentrotus atratus (434.14 mg/100g) and the lowest content in Arbacia lixula (197.71 mg/100g). The highest percentage of essential fatty acids was found in Heterocentrotus trigonarius (0.29%), whereas the lowest was found in Echinotrix diadema (0.19 %). It is concluded that the gonad of Heterocentrotus trigonarius showed the highest protein and essential fatty acids contents. This study also found that Colobocentrotus atratus sea urchin gonads possess the highest content of non-saturated fatty acids (434.14 mg/100g). Keywords: amino acid, fatty acid, protein, sea urchin gonad.

3

Stanimirovic, M., B. Petrujkic, N. Delic, N. Djelic, J. Stevanovic, and Z. Stanimirovic. "Dietary conjugated linoleic acid influences the content of stearinic acid in porcine adipose tissu." Veterinární Medicína 57, No. 2 (February 27, 2012): 92–100. http://dx.doi.org/10.17221/5255-vetmed.

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The present study was conducted in order to determine the effects of supplementation of a growing-finishing pig diet with 0.5% conjugated linoleic acid (CLA) on production characteristics and slaughter traits. Ninety-seven female Swedish Landrace pigs were used. The control group of animals was fed a regular diet (n = 49), while the experimental group of animals (n = 48) received a diet where part of the soybean oil was substituted with commercially enriched CLA oil (containing at least 56% of CLA isomers, 28% cis-9, trans-11 and 28% trans-10, cis-12). The experiment lasted 44 days; porkers were fed from an initial weight of 66.0 up until a final weight of 103.5 kg. Feed conversion ratio, carcass and ham weight, percentage of lean meat and subcutaneous fat tissue as well as intramuscular fat were recorded. The fatty acid content of ham intramuscular fat tissue was determined by HPLC. No statistically significant influence of CLA was observed, either on carcass and ham weight, or on fat percentage in subcutaneous and intramuscular tissue. Dietary CLA enrichment proved to increase the content of stearinic acid in intramuscular fat tissue, 17.29 ± 13.26 % in experimental and 15.87 ± 33.71 % in control group of pigs (P < 0.01). The obtained production results show no statistically significant changes in main production traits between the two groups of animals. The observed difference in the content of stearinic acid (P < 0.01) implies firmer fat tissue, which has a practical value in pig bacon fattening.

4

Paszczyk, Beata, and Joanna Łuczyńska. "Fatty acids profile, conjugated linoleic acid contents and fat quality in selected dairy products available on the Polish market." Czech Journal of Food Sciences 38, No. 2 (April 30, 2020): 109–14. http://dx.doi.org/10.17221/341/2019-cjfs.

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The fatty acid composition, cis-9,trans-11 C18:2 (CLA) content and lipid quality indices in the fat of some dairy products (pasteurised milk, UHT milk, natural yoghurts, bio-yoghurts, yoghurts with fruit and cereal grains, butters and hard cheeses) available on the Polish market were determined. The conducted study demonstrated that the fat extracted from the analysed dairy products was characterised by various contents of fatty acids and various lipid quality indices. In the fat extracted from all the analysed products, saturated fatty acids (SFA) were dominant. The fat from the yoghurts with the fruit and cereal grains was characterised by the highest content of PUFA (polyunsaturated fatty acids), the highest hypocholesterolaemic/hypercholesterolaemic ratio (H/H) and the lowest value of the index of atherogenicity (AI) and the index of thrombogenicity (TI). The fat from the natural yoghurts contained the highest value of MUFA (monounsaturated fatty acids). The fat from the bio-yoghurts (7.62 mg g–1) had the highest mean content of CLA. In the other analysed products, the mean content of the CLA was significantly lower (P < 0.05), but the fat from the UHT milks (3.32 mg g–1 fat) had the lowest content. <br /><br />

5

Lachman, J., M. Orsák, V. Pivec, and J. Kučera. "Effect of the year and storage on ascorbic acid content and total polyphenol content in three apple varieties." Czech Journal of Food Sciences 18, No. 2 (January 1, 2000): 71–74. http://dx.doi.org/10.17221/8313-cjfs.

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Ascorbic acid (AA) and total polyphenol content (TP) are important plant antioxidants with many healthy effects, such as ”scavengers of free radicals”, they inhibit oxidation of low-density lipoproteins, lower cholesterol levels, decrease fragility of blood vessels and increase their permeability, decrease heart coronary risk, etc. One of important sources of these compounds in human nutrition are apples. In two years (1997 and 1998) was investigated ascorbic acid content (AA) and total polyphenol content (TP) in three apple varieties (Idared, Gloster and Ontario) cultivated under equal conditions on the experimental plot of Czech University of Agriculture in Prague-Suchdol. AA content was determined by titration method with 2,6-dichlorphenolindophenol and TP content spectrophotometrically with Folin-Ciocalteau’s reagent. In two years’ trials AA and TP contents were estimated immediately after harvest in September and then monthly during storage for six months at +5°C. Statistically high significant differences were determined both in AA and TP contents during storage period – there was observed meaningful AA and TP decrease. The highest antioxidant content showed in both years early variety Ontario (in average 12.05 mg/kg AA, 2011.5 mg/kg TP), the lowest semi-early variety Gloster (in average 5.45 mg/kg AA, 1738.0 mg/kg TP). In this context the variety Ontario is the most favourable. The highest decrease of AA content was in variety Ontario (–30.05 %rel), the lowest in variety Gloster (–22.93 %rel ); in TP contents were differences negligible (–27.14 and –27.82 %rel). In spite of this decrease were in Ontario variety both values after six months storage the most favourable (8.45 mg/kg AA, 1466.5 mg/kg TP). Results were statistically evaluated with F-test and t-test. There could be seen differences among varieties and years of cultivation, but these differences were under the level of statistical significance showing only apparent tendencies. While varietal differences in decreasing of AA content during storage were greater (in interval from –22.93 %rel in Gloster variety to –30.05 %rel in Ontario variety), decreasing of TP contents during storage was nearly the same (about –27 %rel of original content

6

Timofeeva, Olga, Lyudmila Belysheva, Irina Avsyankina, and Olga Likhoshva. "Fatty acid content in fish gastronomy." Science and Innovations 11, no. 213 (November 2020): 73–77. http://dx.doi.org/10.29235/1818-9857-2020-11-73-77.

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Based on the analysis of the fatty acid composition of fish gastronomy, presented in the Minsk trade network, data on the content of saturated, monounsaturated and ω-3 and ω-6 polyunsaturated fatty acids and their ratio were obtained.

7

Amiri, Mohammad, Amir Hossein Shirani Rad, Alireza Valadabadi, Saeed Sayfzadeh, and Hamidreza Zakerin. "Response of rapeseed fatty acid composition to foliar application of humic acid under different plant densities." Plant, Soil and Environment 66, No. 6 (June 23, 2020): 303–8. http://dx.doi.org/10.17221/220/2020-pse.

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In order to the assessment of humic acid application on the qualitative characteristics of rapeseed in various plant densities, a factorial split-plot test was conducted for two cultivation years in Karaj, Iran. In this experiment, plant density considered in three levels (40, 60, and 80 plants/m<sup>2</sup>), humic acid at two concentrations (non-application and application at the concentration of 0.3%) in the main plots, and six cultivars of rapeseed embracing RGS003, Zafar, Julius, Jerry, Zabol10, and Hyola4815 in the sub-plots. The interaction effect of plant density ×humic acid × cultivar on seed yield, oil yield, oleic acid, linolenic acid, linoleic acid, palmitic acid, erucic acid, canopy temperature, and seed glucosinolate content as well as the interaction effect of plant density × cultivar on the oil content and total chlorophyll content were significant at 1% level. Cv. Jerry had the maximum seed and oil yields under humic acid application condition with the density of 40 plants/m<sup>2</sup>, and the maximum contents of oleic, linoleic, and palmitic fatty acids as well. Moreover, this cultivar, through containing the lower and standard content of erucic acid and glucosinolate, is recommendable under the circumstance of the present research.

8

Gan, Mailin, Linyuan Shen, Lei Chen, Dongmei Jiang, Yanzhi Jiang, Qiang Li, Ying Chen, et al. "Meat Quality, Amino Acid, and Fatty Acid Composition of Liangshan Pigs at Different Weights." Animals 10, no. 5 (May 9, 2020): 822. http://dx.doi.org/10.3390/ani10050822.

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Indigenous pig breeds are important biological resources and their diversity has been severely damaged. The Liangshan pig is a typical mountain-type local pig breed in southwest China. Here, the meat quality, amino acid, and fatty acid composition of Liangshan pigs were compared at seven stages within the weight range of 50–90 kg. A score for comprehensive factors of meat quality was maintained after rising and kept in a plateau within 74.9–91.5 kg of body weight. The total amount of amino acids in the longissimus dorsi muscle remained stable, and the total fatty acids showed an upward trend. Amino acid composition analysis revealed that as the body weight of Liangshan pigs increased, umami, basic, and acidic amino acid contents decreased, while the essential amino acids (EAA) content and the ratio of basic amino acids to acidic amino acids increased. Fatty acid composition analysis revealed that as body weight increased, the content of polyunsaturated fatty acids (PUFA) exhibited a downward trend, while the content of saturated fatty acids (SFA) exhibited an upward trend. This study is a primary step towards the development and utilization of Liangshan pigs and provides useful information for local pork processing and genetic improvement.

9

Rasyid, Abdullah. "Amino Acid and Fatty Acid Compositions of Sea Cucumber Stichopus Vastus from Salemo Island Waters, Indonesia." Squalen Bulletin of Marine and Fisheries Postharvest and Biotechnology 13, no. 1 (May 31, 2018): 9. http://dx.doi.org/10.15578/squalen.v13i1.285.

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Coastal waters of Indonesia have considerable biodiversity of sea cucumbers. In the present study the amino acid and fatty acid contents in sea cucumber Stichopus vastus collected from Salemo Island waters Indonesia were determined. Results showed that all essential and non-essential amino acids were found in S. vastus. The major essential amino acid content was arginine (28651.62 mg/Kg). Whereas the major non-essential amino acid content was glycine (60907.24 mg/Kg). The total fatty acids were determined in which finding suggested that saturated fatty acid was more than polyunsaturated fatty acid and monounsaturated fatty acid. The higher saturated fatty acid, polyunsaturated fatty acid and monounsaturated fatty acid were palmitic acid (0.07%), arachidonic acid (0.13%) and palmitoleic acid (0.03%) respectively.

10

Zelenka, J., D. Schneiderova, E. Mrkvicova, and P. Dolezal. "The effect of dietary linseed oils with different fatty acid pattern on the content of fatty acids in chicken meat." Veterinární Medicína 53, No. 2 (February 19, 2008): 77–85. http://dx.doi.org/10.17221/1985-vetmed.

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Effects of 1, 3, 5 or 7% of linseed oil in the diet on the content of fatty acids in breast and thigh meat were studied in broiler chickens. Oils made either of seeds of the linseed cultivar Atalante (A) with a high content of α-linolenic acid or of the cultivar Lola (L) with a predominating content of linoleic acid were fed from 25 to 40 days of age. When feeding A, the contents of all n-3 polyunsaturated fatty acids (PUFA), including eicosatrienoic acid, were significantly higher, those of n-6 PUFA were lower, and the ratio of n-6/n-3 PUFA was narrower (<I>P</I> < 0.001) than when L was fed. The narrowest n-6 to n-3 PUFA ratio was observed at the content 36 g of α-linolenic acid (58 g A) per kg of the diet while the widest one at 2 g of α-linolenic acid (70 g L) per kg of the diet. When using L, the increasing level of linoleic acid in feed was associated with significantly increasing levels of all n-6 PUFA in meat. The content of all n-3 PUFA increased after the application of oil A, but the dependence for eicosapentaenoic acid in thigh meat was expressed significantly more precisely by the second degree parabola with the maximum at the level of 37 mg of α-linolenic acid and for clupanodonic and docosahexaenoic acids by parabolas with maxima at the level of α-linolenic acid in the diet 41 g and 30 g for breast meat and 35 g and 27 g for thigh meat, respectively. By means of the inclusion of linseed oil with a high content of α-linolenic acid in the feed mixture it would be possible to produce poultry meat with a high content of n-3 PUFA as a functional food.

Більше джерел

Дисертації з теми "Acid content":

1

Dougherty, Christine. "Determination of dry weight, nitrogen content, and sulfur content of radish (Raphanus sativus) plants exposed to simulated acid rain." Virtual Press, 1986. http://liblink.bsu.edu/uhtbin/catkey/458973.

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Effects of acid rain on the dry weight, nitrogen and sulfur content of radish plants were determined. They were exposed to distilled water acidified with a 7:3 ratio of sulfuric acid and nitric acid and adjusted to pH levels 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, and 5.7. A control group, exposed to distilled water only, was also used. Four hundred plants, divided in eight groups, were grown under laboratory conditions. At four, seven and ten week intervals, an equal number of plants of each pH level were removed from the soil.Plants exposed to water of lower pH values were found to be significantly higher (p < .05) in dry weight, percentage of nitrogen, and weight of sulfur per plant than crops at more neutral pH levels. The increased weight may be due to the greater availability of nitrates and sulfates at lower pH levels. These compounds probably contributed to better growth and greater dry weight of the plants at low pH levels.

2

Suwannakarn, Kaewta. "Biodiesel production from high free fatty acid content feedstocks." Connect to this title online, 2008. http://etd.lib.clemson.edu/documents/1211389077/.

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3

Baughman, Curtis Andrew. "Influence of in vitro elaidic acid or trans-vaccenic acid uptake and lactogenic hormone stimulation on fatty acid content of mouse mammary cells." Thesis, Virginia Tech, 1996. http://hdl.handle.net/10919/45087.

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The objective of the study was to examine the effects of trans-9-octadecenoic acid (elaidic) and trans-II-octadecenoic acid (trans-vaccenic) on uptake and alteration of exogenous fatty acids by mouse mammary epithelial cells. Cells from a subclone of the COMMA-D cell line were plated on uncoated plastic petri dishes and grown to confluence. Supplemental fatty acids bound to bovine serum albumin were added to the medium applied to the confluent cell cultures. Treatments included 200 JlM octadecanoic acid (CI8:0) as a control and 100 JlM CI8:0 with one of the following JlM ratios of cis-octadecenoic acid (cis-CI8:I) to elaidic or trans-vaccenic: 100:0, 75:25, 50:50, 0:100. In addition, all treatments were conducted with or without lactogenic hormone supplementation. The cellular protein to DNA ratio and total amount of fatty acids per mg protein were decreased (P < .05) by addition of lactogenic hormones. In treatments without hormone supplementation, however, the total amount of cellular fatty acids per mg protein was decreased (P < .05) by addition of either trans-CI8:I isomer. Results indicated a significant (P < .05) relationship between the concentration oftrans-C18:1 in the media and uptake of trans-C 18: 1 isomers, and retroconversion of trans-C 18: 1 to trans-C 16: 1. The slopes of the lines for cellular C16:0, cis-C16:1, and cis-CI8:1 were less (P < .05) than zero as concentration oftrans-CI8:1 in the media increased. However, trans-CI8:1 isomers did not influence the proportion of polar and nonpolar lipids synthesized by the cells. It appears that trans fatty acids may depress milk fat output by decreasing de novo fatty acid synthesis and cis-C 18: I content.
Master of Science

4

Gol, i. Parera Sofia. "Genetic biomarkers for fat content and fatty acid composition in pork." Doctoral thesis, Universitat de Lleida, 2019. http://hdl.handle.net/10803/667462.

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Aquesta tesi doctoral forma part d'una línia de recerca sobre la millora genètica de la qualitat de la carn en porcí. Un dels recents objectius inclòs en algunes línies paternes seleccionades per mercats de qualitat és aconseguir un nivell òptim de greix intramuscular i de composició en àcids grassos sense penalitzar el rendiment magre. Aquesta tesi està formada per quatre estudis realitzats en una línia pura de porcs Duroc destinats a la producció de càrnics d'alta qualitat. Els estudis es van dissenyar amb l'objectiu d'entendre millor la variabilitat genètica subjactent al contingut de greix i a la composició en àcids grassos i d’identificar marcadors potencials a la selecció. El primer estudi va examinar els paràmetres genètics de la ruta de l'àcid linoleic (C18:2) a l'àcid araquidònic (C20:4). En particular, es va demostrar que s’espera que la selecció pel valor absolut de C18:2 proporcioni una resposta a la selecció similar a la selecció pel greix intramuscular a greix dorsal restringit. Aquests resultats van conduir a investigar el gen de la desaturasa-2 dels àcids grassos (FADS2), com a gen candidat per a la ruta metabòlica de C18:2. Així, el segon estudi va avaluar els efectes d'una variant (el polimorfisme rs321384923 es va utilitzar com a marcador) al promotor del gen FADS2. Els resultats van demostrar que aquest polimorfisme afecta el perfil d'àcids grassos n-6 millorant l'eficiència de desaturació de C18:2 a C20:4. Addicionalment, es va avaluar l'associació dels gens de les perilipines (PLIN) i del gen de la proteína d’unió al guanilat 1 (GBP1) amb caràcters de creixement i de qualitat de la carn. Així, el tercer estudi va examinar els efectes de dos polimorfismes als gens PLIN1 i PLIN2, relacionats amb l'emmagatzematge i la mobilització de lípids. Els resultats indiquen que el polimorfisme rs333231747 a PLIN2 està associat al creixement primerenc i al pes magre. L'últim estudi va demostrar que GBP1 té dos senyals de poliadenilació actius i que el seu ús depèn del genotip rs80800372. Els porcs portadors de l'al·lel G, associat a una menor viremia després de la infecció pel virus reproductiu i respiratori porcí, van tenir transcripcions més llargues i una menor expressió gènica. En condicions no epidèmiques, l'al·lel G va augmentar el contingut de greix intramuscular, però va disminuir el pes magre. El contingut de C18:2 i els marcadors genètics investigats es poden utilitzar per dissenyar estratègies de selecció adequades per millorar la qualitat de la carn i el creixement magre.
Esta tesis doctoral es parte de una línea de investigación sobre la mejora genética de la calidad de la carne en porcino. Uno de los recientes objetivos incluido en algunas líneas paternas seleccionadas para mercados de calidad es lograr un nivel óptimo de grasa intramuscular y de composición en ácidos grasos sin penalizar el crecimiento magro. Esta tesis comprende cuatro estudios realizados en una línea pura de cerdos Duroc destinados a la producción de cárnicos de alta calidad. Los experimentos se diseñaron con el objetivo de comprender mejor la variabilidad genética subyacente en el contenido de grasa y la composición en ácidos grasos e identificar marcadores potenciales a la selección. El primer estudio examinó los parámetros genéticos de la ruta del ácido linoleico (C18:2) al ácido araquidónico (C20:4). En particular, se demostró que se espera que la selección del valor absoluto de C18:2 proporcione una respuesta similar a la selección por grasa intramuscular a grasa dorsal restringida. Estos hallazgos llevaron a investigar el gen de la desaturasa-2 de los ácidos grasos (FADS2), como gen candidato para la ruta del C18:2. Por lo tanto, el segundo estudio evaluó los efectos de una variante (el polimorfismo rs321384923 se usó como marcador) en el promotor del gen FADS2. Los resultados mostraron que este polimorfismo afecta el perfil de ácidos grasos n-6 al aumentar la eficiencia de desaturación de C18:2 a C20:4. Además, se evaluó la asociación de los genes de las perilipinas (PLIN) y el gen de la proteína de unión a guanilato 1 (GBP1) con caracteres de crecimiento y de calidad de la carne. De este modo, el tercer estudio examinó los efectos de dos polimorfismos en PLIN1 y PLIN2, relacionados con la deposición y la movilización de lípidos. Los resultados indicaron que el polimorfismo rs333231747 en PLIN2 se asocia con el crecimiento temprano y con el peso magro. El último estudio mostró que GBP1 tiene dos señales de poliadenilación activas y que su uso depende del genotipo rs80800372. Los cerdos portadores del alelo G, asociado con una menor viremia después de la infección por el virus reproductivo y respiratorio porcino, tenían transcritos más largos y una menor expresión génica. En condiciones no epidémicas, el alelo G aumentó el contenido de grasa intramuscular pero disminuyó el peso magro. El contenido de C18:2 y los marcadores genéticos investigados se pueden usar para diseñar estrategias de selección adecuadas para mejorar la calidad de la carne y el crecimiento magro.
This PhD dissertation is part of a research line on the genetic improvement of pork quality. One of the latest goals to be included in some sire lines selected for premium markets is to achieve an optimum level of intramuscular fat and fatty acid composition without penalizing lean growth performance. This thesis is comprised of four studies conducted on a purebred Duroc line used for producing high-quality meat products. The experiments were designed with the aim to better understand the genetic variability underlying fat content and fatty acid compostion and to identify potential markers for breeding. The first study examined the genetic parameters of the linoleic acid (C18:2) to arachidonic acid (C20:4) pathway. In particular, it was showed that selection for the absolute value of C18:2 is expected to deliver a similar response outcome as selection for intramuscular fat at restrained backfat thickness. These findings led to investigate the fatty acid desaturase-2 (FADS2) gene, as a candidate gene for C18:2 metabolism route. Thus, the second study evaluated the effects of a variant (rs321384923 was used as a tag single nucleotide polymorphism) in the promoter of the FADS2 gene. Results showed that this polymorphism affects the n-6 fatty acid profile by enhancing the desaturation efficiency of C18:2 to C20:4. Additionally, the association of perilipin (PLIN) genes and guanylate-binding protein-1 (GBP1) gene with growth and meat quality traits was assessed. Thus, the third study examined the effects of two polymorphisms in PLIN1 and PLIN2, which have been related to lipid storage and mobilization. Results indicated that the rs333231747 polymorphism on PLIN2 is associated to early growth and lean weight. The last study showed that GBP1 has two active polyadenylation signals and that their usage depends on the rs80800372 genotype. The pigs carrying the G allele, which has been associated with lower viraemia after porcine reproductive and respiratory virus infection, had longer transcripts and lower gene expression. In non-epidemic conditions, the G allele increased intramuscular fat content but decreased lean weight. Linoleic acid content and the investigated genetic markers can be used to design appropriate selection strategies to enhance meat quality and lean growth.

5

Liebenberg, Lindie. "Effects of nutrition on the conjugated linoleic acid content of milk." Thesis, Link to the online version, 2007. http://hdl.handle.net/10019/397.

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6

Callow, Paul. "Controlling the fatty acid content of live food for cultured larval sablefish." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0012/MQ52788.pdf.

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7

Johnson, Bryan Jay. "The carbon isotopic content and concentration of ambient formic and acetic acid." Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/185355.

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A direct method for source determination of atmospheric formic and acetic acid, through carbon isotopic analysis of the ambient acids and their potential sources, has been successfully developed and tested. These first carbon isotopic measurements of formic acid in the atmosphere were found to be fairly constant, regardless of location. This is consistent with a single dominating source of formic acid, with vegetation emissions being the most likely controlling source. Collection of relatively large quantities (0.3$-$3.0 mg) of the organic acids, which was necessary for carbon isotopic measurements, was effectively accomplished by a new method using calcium hydroxide-treated filters with a high-volume sampler. Samples were collected on a regular basis at Mount Lemmon, Arizona (elevation = 9200 feet A.S.L.). Atmospheric concentrations showed a well-defined seasonal pattern, with the lowest concentrations (about 0.2 ppbv) occurring in the middle of the winter, which steadily increased to a maximum of nearly 2 ppbv in the summer. The ¹³C content (δ ¹³C) of HCOOH averaged -20.9 ± 2.5 ‰ during the growing season (April-September) and -23.2 ± 3.5 ‰ during the non-growing season at Mount Lemmon. Isotopic measurements of formic acid from several other locations included two west coast marine sites (δ ¹³C range of -19.1 to -24.6 ‰), three Colorado Rocky Mountain samples averaging -23.2 ± 1.0 ‰, two from the prairie of North Dakota (-23.5 ± 1.0 ‰) and three samples collected in the urban Tucson, Arizona area (-20.8 ± 3.4 ‰). Source measurements included HCOOH emissions from two species of formicine ants (-18.8 ± 1.7 ‰), and HCOOH in automobile exhaust (-28 ‰ from leaded gasoline, and -48.6 ‰ from unleaded). Further support for a biogenic source of atmospheric HCOOH came from the carbon-14 analysis of six Mount Lemmon HCOOH samples (93-113% modern carbon), using accelerator mass spectrometry. Carbon isotopic fractionation during exchange of HCOOH between the liquid and gas phases was investigated through a gas/liquid partitioning experiment. A first experimental measurement of the Henry's Law coefficient (Kᴴ) averaged 7400 ± 800 M/atm. Fractionation between HCOOH(g) and HCOOH(aq) was found to be negligible.

8

Goossen, Caleb. "Management Factors Influence On The Fatty Acid Content And Composition Of Forages." ScholarWorks @ UVM, 2018. https://scholarworks.uvm.edu/graddis/920.

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Demand for ruminant-derived products high in beneficial fatty acids (FA) has led to a desire to maximize the alpha-linolenic acid (ALA) and total FA (ΣFA) content of forage crops. Several management factors affect the ALA and ΣFA content of forages, including phenology, species, season, and nitrogen fertility. Yet, the influence of harvest management decisions that affect wilting time of conserved forages is under-studied. Similarly, the majority of published research regarding ALA and ΣFA content is of cool season (C3 photosynthetic) temperate perennial forage species, and not warm season (C4 photosynthetic) annual species. Sample preservation methodologies used in published research are often too expensive and time consuming for desired practicality, or unreliable. This dissertation aids in addressing these deficiencies. In the first study, forced hot air drying of forage samples was shown to be unreliable for accurate FA analysis, and an alternative methodology was established utilizing brief microwave pretreatment of small fresh weight samples prior to forced hot air drying, yielding results similar in accuracy to lyophilized samples. Oxidative losses of ground dried forage samples were also examined, again suggesting that microwave pretreatment prior to forced hot air drying is a fast, inexpensive and otherwise desirable choice for forage sample preservation in anticipation of later FA analysis. A second study investigated two warm season annual forage species (sorghum-sudangrass and pearl millet), showing that maturity-associated declines in whole plant ALA and ΣFA content are largely a product of an increasing ratio of ALA- and ΣFA-scarce pseudostem fractions, and only secondarily resultant of maturity associated declines within individual plant fractions. Lamina mass ratio was identified as a correlate with ALA and ΣFA content, at least as useful as two common correlates - crude protein and neutral detergent fiber content. A third study also showed the critical influence of crop maturity upon ALA and ΣFA content in two warm season annual forages (pearl millet and sudangrass), in addition to differences between species and those resultant from differing nitrogen fertility. Conserved forage harvest decisions were evaluated in the fourth study. No difference was found between wide and narrow swath treatments (70% and 40% of mower width, respectively) of AM and PM mown reed canarygrass, but there was evidence to suggest that AM mowing may allow for a higher content of ALA and ΣFA content relative to PM mowing. Ensiling was also found to decrease ALA content or proportion. In conclusion, management choices promoting grazing and/or harvesting of a higher laminae proportion, optimizing nitrogen fertility, and suitable choice of species for meeting these goals may be the best way to maximize the ALA and ΣFA content of forages grown for livestock. AM mowing may reduce ALA and ΣFA content losses otherwise caused by overnight wilting of forages mown for conservation, and microwave pretreatment prior to forced hot air drying is an advisable sample preservation methodology for researchers furthering the study of forage ALA and ΣFA content, when lyophilization is impractical or too expensive.

9

Nair, Vipinachandran. "Reduction of phytic acid content in canola meal by solid state fermentation." Thesis, University of Ottawa (Canada), 1990. http://hdl.handle.net/10393/5919.

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Solid state fermentation of canola meal has been carried out for the reduction of its phytic acid content. Several microorganisms were surveyed for this purpose. The phytic acid content of canola meal was reduced by 26%, 60% and 66% using Saccharomyces cerevisiae, Rhizopus oligosporus NRRL 2990 and Aspergillus niger NRC 401121 respectively after 120 hours of fermentation. Aspergillus ficuum NRRL 3135 was found to be the best for the reduction of phytic acid content. For this reason, this microorganism was studied more extensively. In the study of the phytase (EC 3.1.3.8) from Aspergillus ficuum NRRL 3135, it was found that the production of the enzyme in a submerged batch process was inhibited by high concentrations of glucose. The inhibition was overcome by applying a fed batch technique in the production of the enzyme. Tests carried out at different oxygen concentrations revealed that aeration had a beneficial effect on the production of the enzyme. (Abstract shortened by UMI.)

10

Gray, Brian David. "Acid volatile sulfides as indicators of heavy metal binding capacity in southeastern coastal sediments." Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/20293.

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Книги з теми "Acid content":

1

Laishley, E. J. Critical review of inorganic sulphur microbiology with particular reference to Alberta soils. Calgary, Alta: Acid Deposition Research Program, 1987.

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2

Orlov, D. S. Humus acids of soils. New Delhi: Published for the United States Dept. of Agriculture and the National Science Foundation, Washington, D.C., by Amerind Pub. Co., 1985.

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3

El-Shall, Hassan E. Decreasing iron content in wet-process phosphoric acid: Final report. Bartow, Fla. (1855 W. Main St., Bartow 33830): Florida Institute of Phosphate Research, 2001.

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4

Institution, British Standards. British standard method for determination of acid content of wool. MiltonKeynes: B.S.I., 1988.

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5

Kumada, Kyōichi. Chemistry of soil organic matter. Tokyo: Japan Scientific Societies Press, 1987.

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6

Motuzova, G. V. Soil organic matter and their interactions with metals: Processes, factors, ecological significance. Hauppauge, N.Y: Nova Science Publishers, 2012.

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7

Hale, Allison. Fluid, electrolytes, and acid-base imbalance: Content reviews plus practice questions. Philadelphia: F.A. Davis, 2012.

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8

Samoĭlova, E. M. Organicheskoe veshchestvo pochv chernozemnoĭ zony. Kiev: Nauk. dumka, 1990.

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9

Laishley, E. J. Critical review of inorganic sulphur microbiology with particular reference to Alberta soils. Calgary, AB: Acid Deposition Research Program, 1987.

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10

Dahlem Workshop on Humic Substances and Their Role in the Environment (1987 Berlin, Germany). Humic substances and their role in the environment: Report of the Dahlem Workshop on Humic Substances and Their Role in the Environment, Berlin 1987, March 29-April 3. Edited by Frimmel F. H, Christman R. F. 1936-, Bracewell J. M, Berlin (Germany : West). Senat., and Stifterverband für die Deutsche Wissenschaft. Chichester [West Sussex]: Wiley, 1988.

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Частини книг з теми "Acid content":

1

Marriott, R. A., E. Fitzpatrick, F. Bernard, H. H. Wan, K. L. Lesage, P. M. Davis, and P. D. Clark. "Equilibrium Water Content Measurements For Acid Gas Mixtures." In Acid Gas Injection and Related Technologies, 3–20. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118094273.ch1.

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2

Moroni, F., P. Russi, V. Carlà, G. De Luca, and V. Politi. "The Regulation of Brain Kynurenic Acid Content: Focus on Indole-3-Pyruvic Acid." In Advances in Experimental Medicine and Biology, 299–308. Boston, MA: Springer New York, 1991. http://dx.doi.org/10.1007/978-1-4684-5952-4_27.

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3

Tanner, Roger L. "Measuring the Strong Acid Content of Atmospheric Aerosol Particles." In Advances in Chemistry, 229–41. Washington, DC: American Chemical Society, 1993. http://dx.doi.org/10.1021/ba-1993-0232.ch008.

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4

Linssen, M. C. J. G., M. M. Vork, Y. F. de Jong, J. F. C. Glatz, and G. J. van der Vusse. "Fatty acid oxidation capacity and fatty acid-binding protein content of different cell types isolated from rat heart." In Cellular Fatty Acid-binding Proteins, 19–25. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4615-3936-0_3.

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5

Yong, Zhang, Du Zhimin, Guo Xiao, and Yang Xuefeng. "Numerical Simulation Studies on Sour Gas Flowing Mechanisms in Gas Reservoirs with High H2S Content." In Acid Gas Injection and Related Technologies, 387–400. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118094273.ch24.

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6

Dekui, Fu, Guo Xiao, Du Zhimin, Fu Yu, Zhang Yong, Deng Shenghui, and Liu Linqing. "A New Comprehensive Mathematical Model of Formation Damage in Fractured Gas Reservoirs with High H2S Content." In Acid Gas Injection and Related Technologies, 361–78. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118094273.ch22.

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7

Zanelli, U., P. Puccini, D. Acerbi, P. Ventura, and P. G. Gervasi. "Selective Depletion of Mitochondrial Glutathione Content by Pivalic Acid and Valproic Acid in Rat Liver." In Advances in Experimental Medicine and Biology, 107–11. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4757-9480-9_14.

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8

Jianfen, Du, Hu Yue, Guo Ping, Deng Lei, and Yang Suyun. "The Experimental Study of the Effect of the CO2 Content on Natural Gas Properties at Gathering Conditions." In Acid Gas Injection and Related Technologies, 81–103. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118094273.ch6.

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9

Dey, Pranab. "Nuclei Acid Dye and DNA Content Measurement in Flow Cytometry." In Diagnostic Flow Cytometry in Cytology, 75–82. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-2655-5_7.

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10

Örsi, Ferenc. "Effect of Thermal Processing on the Tryptophan Content of Baby Foods." In Amino Acid Composition and Biological Value of Cereal Proteins, 409–19. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5307-9_24.

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Тези доповідей конференцій з теми "Acid content":

1

Mello-Júnior, Ronaldo Elias, João Renato De Jesus Junqueira, Jefferson Luiz Gomes Corrêa, Kamilla Soares de Mendonça, and Lucas Barreto de Carvalho. "Osmotic dehydration of eggplant, carrot and beetroot slices: Effect of vacuum on phenolic acid composition." In 21st International Drying Symposium. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/ids2018.2018.7787.

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The aim of this work was to evaluate the influence of vacuum application on the phenolic acid content of osmodehydrated eggplant, carrot and beetroot samples. The contents of catechins and chlorogenic acid were determined by HPLC analysis. Changes in the contents of phenolic acids after the osmotic processes were observed. It was found a reduction in catechins and chlorogenic acids, probable due to the migration and degradation losses. In a general way, the vacuum reduced the catechin and chlorogenic acid contents, compared to the osmotic dehydration at atmospheric pressure. Keywords: Pulsed vacuum osmotic dehydration; chlorogenic acid; catechins.

2

Chebanova, Yu V., and T. A. Kovalenko. "THE NEW LINES OF SUNFLOWER WITH HIGH CONTENT OF STEARIC ACID IN SEED OIL." In 11-я Всероссийская конференция молодых учёных и специалистов «Актуальные вопросы биологии, селекции, технологии возделывания и переработки сельскохозяйственных культур». V.S. Pustovoit All-Russian Research Institute of Oil Crops, 2021. http://dx.doi.org/10.25230/conf11-2021-135-138.

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There is a demand in the food industry for natural solid vegetable oils. The use of sunflower oil with a high content of stearic acid prevents its hydrogenation in the manufacture of food products. The development of new lines of sunflower (Helianthus annuus L.) with an increased content of stearic acid may increase the demand for sunflower oil, a useful analogue of solid vegetable oils for special food purposes. We identified two inbred lines with a high content of stearic and oleic acids from a source with a high content of these acids, one of which, I5HSHO-1, is one-headed, the other, I5HSHO-2v, is many-branched, as well as two one-headed lines with high content of stearic acid on the linoleic background (I5HSLO-1, I5HSLO-2).

3

Vieitez Osorio, Ignacio, Cecilia Dauber, Tatiana Carreras, Alejandro Britos, Silvana Carro, Cecilia Cajarville, Adriana Gámbaro, Santiago Jorcin, and Tomas Lopez. "Goat Cheeses Elaboration with Increased Content of Conjugated Linoleic Acid and Transvaccenic Acid." In Virtual 2021 AOCS Annual Meeting & Expo. American Oil Chemists’ Society (AOCS), 2021. http://dx.doi.org/10.21748/am21.352.

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4

Jaramillo, Oscar Julian, Ricardo Romero, Alexis Ortega, Arthur William Milne, and Manuel Lastre Buelvas. "Matrix Acid Systems for Formations With High Clay Content." In SPE International Symposium and Exhibition on Formation Damage Control. Society of Petroleum Engineers, 2010. http://dx.doi.org/10.2118/126719-ms.

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5

KRUMINA-ZEMTURE, Gita, and Ilze BEITANE. "FATTY ACID COMPOSITION IN BUCKWHEAT (FAGOPYRUM ESCULENTUM M.) FLOURS AND THEIR EXTRUDED PRODUCTS." In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.017.

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Lipids compose a small part of buckwheat seed, but they play an important role in the quality of food. The aim of this study was to evaluate the composition and content of fatty acids in different buckwheat flours (raw, roasted, white, black and germinated) and their extruded products. Fatty acids were quantified by gas chromatography according to the BIOR-T-012-131-2011 method. The prevalence of unsaturated fatty acids was determined which varied between 78.7 and 82.0 g 100 g-1 of fat in buckwheat samples. Linoleic and oleic acids were the most abundant unsaturated fatty acids, whereas palmitic acid was the main saturated fatty acid in buckwheat flours and their extruded products. Unsaturated/saturated fatty acid ratio was determined within 3.69 and 4.56, whereas linoleic/α-linolenic acid ratio was between 13.54 and 16.04. No trans-fatty acids in buckwheat flours and their extruded products were observed. The results showed that germination and extrusion of buckwheat flours did not have any effect on the content and composition of fatty acids (p>0.05).

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KAYA, Yalcin, Caglar COLAK, Veli PEKCAN, Mehmet Ibrahim YILMAZ, and Goksel EVCI. "THE DETERMINATION OF OLEIC ACID CONTENTS IN SUNFLOWER GENOTYPES." In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.060.

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High oleic sunflower is new trend both in Turkey and also in the world due to that it present healthy vegetable oil and also higher standing ability for frying. Higher oleic acid also affects from environment especially nigh temperatures during the grain filling period but genetic contribution is also important. High oleic acid content comes from Pervenent mutation in sunflower and it controlling Ol genes. However, because of being a seed trait which is determining after harvest, it is so difficult and unnecessary works (waiting even low oleic ones until seed treshing, etc) to select high oleic sunflower genetic materials. Therefore, selection utilization of molecular markers for determining of higher oleic types help breeders a lot to select accurately high oleic ones and also reduce costs both workers, isolation material, etc… The study covers determining of higher oleic type sunflower genetic materials developed in National Sunflower Hybrid Breeding Project conducted by Trakya Agricultural Research Institute. To screen of high oleic acid genotypes, around 400 sunflower F2 and F3 individuals obtained from crosses between high oleic acid and low oleic acid lines were used in TUBITAK (The Scientific and Technological Research Council of Turkey) Project 1003-114O971. Fatty acids of sunflower genotypes were determined by Agilent 6850 Gas Chromatography in Trakya University Lab. Based on the study results, oleic acid contents of sunflower genotypes were changed between 21.9-91.8 %, linoleic acid contents of them between 1.1-66.5 %, palmitic acid contents of them were between 3.4-8.0 % and stearic acid contents of genotypes were changed between 1.1-9.7 %. The higher oleic types were selected based on the study results for further generations.

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Garrett, N., and J. Moger. "Label-free imaging of fatty acid content within yeast samples." In SPIE BiOS, edited by Daniel L. Farkas, Dan V. Nicolau, and Robert C. Leif. SPIE, 2013. http://dx.doi.org/10.1117/12.2002970.

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8

Lestari, Fitri, and Kumala Dewi. "Effects of humic acid on vegetative growth, yield, oxalic acid and betacyanin content of red amaranth (Amaranthus tricolor L.)." In THE 6TH INTERNATIONAL CONFERENCE ON BIOLOGICAL SCIENCE ICBS 2019: “Biodiversity as a Cornerstone for Embracing Future Humanity”. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0015774.

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9

Teng, Hongli, Licheng Guo, and Xiangpei Zhao. "CONTENT DETERMINATION OF CICHORIC ACID IN ONYCHIUM JAPONICUM (THUNB.) KUNZE. BY HPLC." In 2016 International Conference on Biotechnology and Medical Science. WORLD SCIENTIFIC, 2016. http://dx.doi.org/10.1142/9789813145870_0022.

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Smirnova, A. O., and O. V. Rybachuk. "Properties of hymatomelanic acid peat and its influence on the growth processes of spring wheat varieties Iren." In VIII Information school of a young scientist. Central Scientific Library of the Urals Branch of the Russian Academy of Sciences, 2020. http://dx.doi.org/10.32460/ishmu-2020-8-0012.

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In this paper, we consider two ways for obtaining hymatomelanic acid extraction into conventional Soxhlet extractions: directly from the peat and from the dry product of humic acid. The results of the study of the elemental composition of humic and hymatomelanic acids are presented, their similarities and differences are analyzed. In order to study the effect of humic and hymatomelanic acid preparations on the growth processes of spring wheat, a vegetation experiment was conducted. Peculiarities of biological action of the solutions and hymatomelanic and humic acids of different concentrations in spring wheat varieties “IREN” were investigated. The paper presents a method for determining the ash content of the studied peat, as well as, calculations of the economic feasibility of using preparations based on the hymatomelanic acids.

Звіти організацій з теми "Acid content":

1

Kotsilkova, Rumiana, and Vladimir Georgiev. Influence of Graphene Size and Content on Thermal Conductivity of Novel Poly(lactic) Acid Nanocomposites. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, April 2021. http://dx.doi.org/10.7546/crabs.2021.04.06.

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2

Ramsey, Monica, Dylan Scott, Charles Weiss, and Jeb Tingle. Effects of boric acid and water content on fundamental properties of proprietary magnesium phosphate cement (MPC) products. Engineer Research and Development Center (U.S.), April 2020. http://dx.doi.org/10.21079/11681/36393.

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3

Knock, Roxanne, Allen H. Trenkle, Donald C. Beitz, Elisabeth J. Huff-Lonergan, Steven M. Lonergan, and James R. Russell. Fatty Acid Profiles and Content of Pasture- and Feedlot-Finished Beef Steers Supplemented with 25-Hydroxyvitamin D3 Prior to Harvest. Ames (Iowa): Iowa State University, January 2008. http://dx.doi.org/10.31274/ans_air-180814-411.

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Palazzolo, D. L., and K. S. Kumar. Effects of S-2-(3-Methylaminopropylamino)ethyl Phosphorothioic Acid (WR- 3689), Alone or Combined with Caffeine, on Catecholamine Content of Mouse Hypothalamus. Fort Belvoir, VA: Defense Technical Information Center, January 1993. http://dx.doi.org/10.21236/ada268505.

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Wright, Emily, Coby Davis, Wahid Hermina, and Sandra Gonzales. Causal Analysis Report for Building 701 Acid Contact Involving Nitric and Hydroflouric Acid. Office of Scientific and Technical Information (OSTI), December 2018. http://dx.doi.org/10.2172/1761356.

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Krebs, J. F. Evaluation of Valves After Concomitant Irradiation and Contact with Flowing pH 1 Sulfuric Acid. Office of Scientific and Technical Information (OSTI), July 2013. http://dx.doi.org/10.2172/1132241.

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Estimating iron and aluminum content of acid mine discharge from a north-central Pennsylvania coal field by use of acidity titration curves. US Geological Survey, 1986. http://dx.doi.org/10.3133/wri844335.

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