Journal articles: 'Oil content'

1

Koreňovská, M., and O. Poláčeková. "Trace elements content in virgin sunflower oil production." Czech Journal of Food Sciences 18, No. 2 (January 1, 2000): 61–65. http://dx.doi.org/10.17221/8311-cjfs.

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Trace elements content Cd, As, Hg, Pb, Ni, Cr, Fe, Cu, Zn, Co and Mn in the single steps of virgin sunflower oil production were studied. It was determined that mercury is cumulated in sunflower kernel and passes into oil. Chromium is concentrated in sunflower hulls and therefore is not passing into oil. Nickel, iron, copper, cobalt, manganese remained in pressed sunflower meal. Only their decreased content was found in oil because mechanical purifying (separation and filtration) minimized their content. We determined the levels of selected trace elements in sunflower virgin oils produced in Slovakia in 1995 and 1996. Methods of atomic absorption spectrometry using graphite furnace and flame were used.

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Mezzenga, Raffaele, and Stephane Ulrich. "Spray-Dried Oil Powder with Ultrahigh Oil Content." Langmuir 26, no. 22 (November 16, 2010): 16658–61. http://dx.doi.org/10.1021/la103447n.

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Dai, X. J., C. Wang, and Q. Zhu. "Milk performance of dairy cows supplemented with rape seed oil, peanut oil, and sunflower seed oil." Czech Journal of Animal Science 56, No. 4 (April 5, 2011): 181–91. http://dx.doi.org/10.17221/1434-cjas.

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The objective of the study was to investigate the effects of supplementing different plant oils to the basal diet on milk yield and milk composition in mid-lactating dairy cows. Forty Chinese Holstein dairy cows averaging 120 days in milk (DIM) at the start of the experiment (body weight = 580 ± 18.2 kg; milk yield = 33.0 ± 2.00 kg/day) were used in a completely randomized block design. The animals were assigned to four dietary treatments according to DIM and milk yield, and supplemented with no oil (control), 2% rapeseed oil (RSO), 2% peanut oil (PNO) and 2% sunflower seed oil (SFO). Milk yield and milk composition (fat, protein, and lactose) were measured. Dry matter intake was similar in all treatments. The supplementation of plant oil increased milk yield, with the highest milk yield in RSO group. Percentages of milk fat, lactose, solids-not-fat and SCC were not affected by treatments except for an increase in milk protein content in oil supplemented groups. The fatty acid (FA) profile of milk was altered by fat supplementation. Feeding plant oils reduced the proportion of both short-chain (C4:0 to C12:0) and medium-chain (C14:0 to C16:1) fatty acids, and increased the proportion of long-chain (≥ C18:0) fatty acids in milk fat. The inclusion of vegetable oils increased the concentration of cis-9, trans-11 CLA. The cis-9, trans-11 CLA content in milk fat was higher from RSO to PNO and SFO was higher than the control. The TVA concentration was higher in the SFO diet, followed by PNO, RSO, and control diets. The results of this study indicated that linoleic acid was more effective in enhancing contents of TVA and CLA in milk fat than oleic acid. No significant effects of week and treatment by week interaction were found out in this study. Overall, feeding plant oils increased monounsaturated and polyunsaturated fatty acids and decreased saturated fatty acids in milk fat. In conclusion, dietary supplementation of RSO increases milk yield the most, while SFO enhances the cis-9, trans-11 CLA content in milk fat more effectively.

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Rodrigues, Josiane Isabela da Silva, Klever Márcio Antunes Arruda, Newton Deniz Piovesan, Everaldo Gonçalves de Barros, and Maurilio Alves Moreira. "Selection of progenitors for increase in oil content in soybean." Revista Ceres 63, no. 5 (October 2016): 661–67. http://dx.doi.org/10.1590/0034-737x201663050010.

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ABSTRACT The low genetic diversity brings limitation to breeding, because genetically similar genotypes share alleles in common, causing little complementarity and low vigor due to the low levels of heterozygosity in crosses. The objective of this work was to analyze the oil content and genetic diversity of soybean genotypes (Glycine max (L.) Merrill) based on QTL regions of this trait for choice of progenitors for increase in oil content. Twenty-two genotypes with wide variation in oil content, including cultivars with high oil contents, were cultivated in different Brazilian conditions and the oil content of the grains was quantified by infrared spectrometry. Microsatellite markers selected based on QTL regions for oil content in soybean were analyzed to estimate the genetic diversity. In these studies, a wide variation in oil content (17.28-23.01%) and a reasonable diversity among the genotypes were observed, being PI181544 the most divergent genotype, followed by Suprema. The genotypes PI371610/Suprema and Suprema/CD01RR8384 showed genetic distance and higher oil contents in the grains, while the cultivars Suprema and CD01RR8384 had the highest oil contents and proved to be little genetically related. These genotypes are promising progenitors for selection of high oil content in soybean.

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Ahn, Suhyun, Jeong Mog Seo, and Heejin Lee. "Thermogravimetric Analysis of Marine Gas Oil in Lubricating Oil." Journal of Marine Science and Engineering 9, no. 3 (March 19, 2021): 339. http://dx.doi.org/10.3390/jmse9030339.

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Marine lubricating oil (LO) is deteriorated by contaminants—especially marine gas oil (MGO), which is invariably mixed during its usage—that can damage engine performance. This study investigates a method for determining the content of MGO in lubricating oil. Weight loss from MGO-containing lubricant was evaluated through thermogravimetric analysis (TGA), and a standard calibration curve was plotted to establish a correlation with MGO content. A comparison of the commonly used ASTM–based gas chromatography (GC) analysis, and this TGA approach revealed that the former was more accurate when the lubricant contained ≤1% MGO; however, TGA afforded higher accuracy when the MGO content was between 0.5% and 15%. Hence, TGA can be used as a simple, reliable, and rapid method to analyze the contents of a lubricant contaminant such as MGO.

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Marega Filho, Mario, Deonisio Destro, Lilian Azevedo Miranda, Wilma Aparecida Spinosa, Mercedes Concórdia Carrão-Panizzi, and Ricardo Montalván. "Relationships among oil content, protein content and seed size in soybeans." Brazilian Archives of Biology and Technology 44, no. 1 (March 2001): 23–32. http://dx.doi.org/10.1590/s1516-89132001000100004.

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During 1995/96 and 1996/97, experiments were carried out at Londrina State University, aiming at quantifying the oil and protein contents in two groups of soybean genotypes; estimating the phenotypic, genotypic and environmental correlations existent among oil, protein content and seed size, and identifying genotypes for direct human consumption with high protein content. The evaluated characters were Weight of a Hundred Seeds (WHS), expressed in grams/100 seeds, Oil Content (OC) and Protein Content (PC), expressed in %. In the experiment carried out in the field, OC ranged from 12 to 20.37 % and PC from 35.66 to 41.75% while in the experiment carried out in the greenhouse OC ranged from 12.26 to 21.79 % and PC from 32.95 to 41.56 % . The correlations between oil and protein were negative and significant. The relationship among WHS with OC and PC was low and higly affected by the time effect. Due to their high protein content and stability to oil and protein contents, there were distinction among the treatments carried out in the field (GA23 and GA20), and those carried out in the greenhouse (PI408251, Waseda, B6F4 (L-3 less), PI423909 and Tambagura).

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7

Dwivedi, S. L., S. N. Nigam, R. Jambunathan, K. L. Sahrawat, G. V. S. Nagabhushanam, and K. Raghunath. "Effect of Genotypes and Environments on Oil Content and Oil Quality Parameters and Their Correlation in Peanut (Arachis hypogaea L.)1." Peanut Science 20, no. 2 (July 1, 1993): 84–89. http://dx.doi.org/10.3146/i0095-3679-20-2-5.

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Abstract The quality of edible oils is now receiving increasing consideration from consumers and processors. The present study was conducted to investigate the effects of environments on oil content and fatty acid composition in peanut. The correlation between oil content and oil quality parameters was also studied. Thirteen peanut (Arachis hypogaea L.) genotypes were grown in 12 environments for the study. Soils at experiment locations differed significantly for pH, EC, and N, P, Zn, Mn, and Fe contents. Significant genotype, environment, and genotype x environment interaction effects were observed for oil content, individual fatty acid contents, and derived oil quality parameters. The original range of 34-54% of oil content based on one season/location evaluation in these lines was not repeatable, and ranged from 45-50% in multilocation evaluation. Oil content was positively correlated with soil pH and Fe content. The correlation of oleic and linoleic acid content with soil pH and Fe content was positive in the former and negative in the latter. The oil content was positively correlated with O/L ratio. Oliec and linoleic acid contents were negatively correlated. Selection for reduced linoleic acid level in genotypes would also reduce levels of total long chain saturated fatty (TLCSF) acids. Of the thirteen genotypes tested, ICG 5856, ICG 5369, and ICGV 87124 could be used in breeding for improved oil quality.

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8

Kahriman, Fatih, Fatma Aktaş, Umut Songur, Mehmet Şerment, and Cem Ömer Egesel. "Screening Turkish maize landraces for kernel oil content and oil quality traits." Plant Genetic Resources: Characterization and Utilization 18, no. 4 (August 2020): 278–86. http://dx.doi.org/10.1017/s1479262120000258.

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AbstractIn this study, maize landraces, previously collected from different regions of Turkey through a national maize breeding project, were screened for kernel oil content and oil quality. After a seed reproduction in 2017, the screening trial was conducted in 2018, using an Augmented Experimental Design with 192 local maize populations along with seven check hybrids. Data were collected on oil, oleic acid, linoleic acid, monounsaturated (MUFA), polyunsaturated and saturated fatty acids, total carotenoid and total tocopherol contents. The results showed that there was a considerable amount of genetic variation among the Turkish maize landraces for almost all the traits investigated in this study. Some of the evaluated landraces are available that could be considered as high oil variety or special genotypes in terms of certain oil quality traits. Landraces had significantly higher values than checks for oil content, oleic acid, MUFA and tocopherol contents. Genetic analyses suggest that the kernel quality traits could be successfully manipulated using the investigated plant material. Heritability values were found high for all the traits of interest, except for saturated fatty acid and total carotenoid content. The promising landraces detected in this study could be exploited in future breeding programmes upon further evaluations at the population level.

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9

Maciel, Gisele, Diego A. De la Torre, María Gabriela Cendoya, Natalia G. Izquierdo, and Ricardo E. Bartosik. "Development of the Enhanced Halsey Model to Predict Equilibrium Moisture Content (EMC) of Sunflower Seeds with Different Oil Contents." Transactions of the ASABE 61, no. 4 (2018): 1449–56. http://dx.doi.org/10.13031/trans.12773.

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Abstract. Using the right equilibrium moisture content (EMC) relationship is critical for implementing successful aeration strategies and for determining the safe storage moisture content of grains and oilseeds. The oil content of sunflower seeds substantially affects the moisture equilibrium relationship, implying that a specific set of model parameters for each oil content range should be obtained. To overcome this practical limitation, the Enhanced Halsey model was developed incorporating a new parameter (D) to characterize the effect of oil content on the original Modified Halsey model. The constants A, B, C, and D of the model were obtained for a wide range of temperatures, moisture and oil contents. The simplicity of the Enhanced Halsey model and the possibility of adapting EMC as a function of oil content make the Enhanced Halsey model valuable for engineering applications (e.g., aeration controllers) and for predicting the safe storage moisture content of seeds with different oil contents, such as sunflower. Keywords: Composition, Grain, Isotherms, Oilseed, Relative humidity, Sorption, Storage quality.

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10

Sedláková, J., B. Kocourková, L. Lojková, and V. Kubáň. "The essential oil content in caraway species (Carum carvi L.)." Horticultural Science 30, No. 2 (November 25, 2011): 73–79. http://dx.doi.org/10.17221/3818-hortsci.

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Caraway fruits contain 1–6% of essential oils consisting of about 30 compounds, from which carvone and limonene account form the main portion, about 95%. To evaluate the quality of various caraway cultivars, the amounts of essential oils and the carvone/limonene ratio were measured. The most common method of essential oil evaluation is steam distillation in accordance with Standard ČSN 58 0110, but an alternative method – supercritical fluid extraction (SFE) – was also investigated in this paper. Ground caraway fruits were extracted under different SFE conditions (pressure, temperature, use of modifiers). Released compounds (carvone and limonene) were quantified by GC.  

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11

Rossato, Roberta, Cássio Egídio Cavenaghi Prete, César de Castro, Gilberto Omar Tomm, Rodrigo Santos Leite, José Marcos Gontijo Mandarino, Pedro Mário de Araújo, and Claudio Guilherme Portela de Carvalho. "Predicting rapeseed oil content with near-infrared spectroscopy." Pesquisa Agropecuária Brasileira 48, no. 12 (December 2013): 1601–5. http://dx.doi.org/10.1590/s0100-204x2013001200010.

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The objective of this work was to establish a calibration equation and to estimate the efficiency of near-infrared reflectance (NIR) spectroscopy for evaluating rapeseed oil content in Southern Brazil. Spectral data from 124 half-sib families were correlated with oil contents determined by the chemical method. The accuracy of the equation was verified by coefficient of determination (R²) of 0.92, error of calibration (SEC) of 0.78, and error of performance (SEP) of 1.22. The oil content of ten genotypes, which were not included in the calibration with NIR, was similar to the one obtained by the standard chemical method. NIR spectroscopy is adequate to differentiate oil content of rapeseed genotypes.

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12

Xianzheng, Zhao, Pu Xiugang, Jin Fengming, Han Wenzhong, Shi Zhannan, Zhang Wei, Dong Xiongying, Wang Hu, and Li Haodong. "Quantitative Method for Evaluating Shale Oil Resources Based on Movable Oil Content." Geofluids 2021 (May 17, 2021): 1–9. http://dx.doi.org/10.1155/2021/5554880.

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The light hydrocarbon content ( S 1 ) of shale oil is lost in aboveground experimental measurements, which do not accurately reflect actual underground light hydrocarbon content and cannot meet the demands of resource quantity calculation. Based on field and laboratory experimental data from the second member of the Kongdian Formation in the Cangdong Sag, Bohai Bay Basin, the retained oil and movable oil contents in shale were calculated using a mathematical formula, and the total resources were quantified. The correction coefficient of S 1 from pyrolysis and the adsorption of oil by the total organic carbon (TOC) were determined to be 1.25 and 100 mg/g, respectively. The calculated parameter movable oil content ( S movable ) and the corresponding calculation formula of S 1 are proposed. The lower limit of S 1 is 100 mg HC/g rock, the TOC content is 4 wt % and 6 wt %, and the corrected movable oil content of 3 mg/g and 6 mg/g, respectively, will be of great significance in shale oil geology and engineering. The optimal geological and engineering settings are divided into three categories and eight subcategories on the basis of these findings. Methods for evaluating total, movable, and recoverable oil resources from shale are discussed, which elucidate a new method for quantitative evaluation and ranking of shale oil resources. This approach is suitable for application in other shale oil exploration and development areas globally.

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13

MANANDHAR, Poorna P., Akihiko NAGAO, and Megumi YAMAZAKI. "Determination of Content of Linseed Oil in Edible Soybean Oil." Journal of Japan Oil Chemists' Society 35, no. 9 (1986): 725–30. http://dx.doi.org/10.5650/jos1956.35.725.

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14

Yuan, Zhi Yang. "Approaches to the Determination of Oil Content in Oil Shale." Advanced Materials Research 320 (August 2011): 441–44. http://dx.doi.org/10.4028/www.scientific.net/amr.320.441.

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Oil and gas are important energy minerals and strategic resources. Moreover, as their substitute, oil shale is the non-renewable fossil fuel resource. In this paper, regarding the oil shale of Huadian in Jilin Province as raw material, we made a research on the approaches to extracting shale oil from oil shale as well as an experimental determination on the impact of heating temperature, shale grain size and holding time.

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15

MISKANDAR, M. S., Y. B. CHE MAN, R. ABDUL RAHMAN, I. NOR AINI, and M. S. A. YUSOFF. "PALM OIL CRYSTALLIZATION: EFFECTS OF COOLING TIME AND OIL CONTENT." Journal of Food Lipids 11, no. 3 (September 2004): 190–207. http://dx.doi.org/10.1111/j.1745-4522.2004.01132.x.

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16

Jia, Feng, Jinshui Wang, Yu Chen, Xia Zhang, Qi Wang, Di Chen, and Changfu Zhang. "Effect of oil contents on gluten network during the extrusion processing." Czech Journal of Food Sciences 37, No. 4 (August 23, 2019): 226–31. http://dx.doi.org/10.17221/31/2018-cjfs.

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To investigate a comparative evaluation of the gluten polymerization properties at different oil contents during the extrusion processing, the electrophoretic profiles of the gluten, free sulfhydryl (SH) compounds, the secondary structure of gluten, glutenin macropolymer contents and gluten network were measured. Five gluten samples were formulated by adding different oil contents. The low molecular weight contents of gluten decreased as well as the high molecular weight contents increased during the extrusion processing. The free SH of gluten at 8 or 10% oil content drops significantly to a minimum. The β-sheets contents of gluten have significantly difference between the treatments and control, except for 15 and 20% oil content treatments. Confocal laser scanning microscopy of mixed glutens correlated to the degree of oil contents with the gluten in the bi-continuous gluten network.

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17

Hmielowski, Tracy. "Rapid Phenotyping of Seed Oil Content." CSA News 63, no. 4 (April 2018): 8–9. http://dx.doi.org/10.2134/csa2018.63.0403.

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18

Okolelova, A. A., V. N. Kaplya, and A. G. Lapchenkov. "EVALUATION OF OIL CONTENT IN SOILS." Belgorod State University Scientific bulletin Natural Sciences 43, no. 1 (March 30, 2019): 76–86. http://dx.doi.org/10.18413/2075-4671-2019-43-1-76-86.

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19

NARDELLA, JOHN A., TIMOTHY T. RAW, and GRANT H. STOKES. "New Technology in Oil Content Monitors." Naval Engineers Journal 101, no. 2 (March 1989): 48–55. http://dx.doi.org/10.1111/j.1559-3584.1989.tb00692.x.

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LI, Zheng, Rifang ZHU, Juyuan LI, and Qing LIU. "Quantitative Study on Shale Oil Content." Acta Geologica Sinica - English Edition 89, s1 (August 20, 2015): 231–32. http://dx.doi.org/10.1111/1755-6724.12304_5.

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21

Totani, Nagao, Miho Yawata, Mitsunobu Takada, and Masafumi Moriya. "Acrylamide Content of Commercial Frying Oil." Journal of Oleo Science 56, no. 2 (2007): 103–6. http://dx.doi.org/10.5650/jos.56.103.

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22

López, M. C., M. T. Satué, M. L. González, and A. Agramont. "α-tocopherol content in trout oil." Food Chemistry 53, no. 1 (January 1995): 67–70. http://dx.doi.org/10.1016/0308-8146(95)95788-8.

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23

Gapor, Ab, A. Kato, and A. S. H. Ong. "Tocopherol content in oil palm leaflet." Journal of the American Oil Chemists’ Society 63, no. 3 (March 1986): 330–31. http://dx.doi.org/10.1007/bf02546040.

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24

KIKUCHI, Kohshi, Shuichi YAMAMOTO, Hirokazu SHIGA, Hidefumi YOSHII, and Shuji ADACHI. "Surface Oil Content of Microcapsules Containing Various Oil Fractions and Oil-Droplet Sizes." Japan Journal of Food Engineering 14, no. 4 (2013): 169–75. http://dx.doi.org/10.11301/jsfe.14.169.

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25

Mao, Like, Yrjö H. Roos, and Song Miao. "Volatile Release from Self-Assembly Structured Emulsions: Effect of Monoglyceride Content, Oil Content, and Oil Type." Journal of Agricultural and Food Chemistry 61, no. 7 (February 6, 2013): 1427–34. http://dx.doi.org/10.1021/jf304525j.

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26

Mohammadi, Amirhossein, Taghi Ebadi, and Mehrdad Ahmadi. "Effect of Bentonite Addition on Geotechnical Properties of Oil-Contaminated Sandy Soil." Journal of Civil Engineering and Construction 7, no. 4 (November 25, 2018): 153. http://dx.doi.org/10.32732/jcec.2018.7.4.153.

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Oil and its derivatives not only change the chemical and biological properties of the soils, but also affect their geotechnical properties. Effects of oil contamination on a sandy soil which mixed with bentonite was assessed in terms of compaction, shear strength, and consolidation behavior. The experiments were carried out by polluting dry sandy soil with 2.5, 5, 7.5, 10% w/w crude oil at different bentonite contents (0, 5, 10, 15, 20% w/w). Results of compaction tests indicated that at a fixed bentonite content, with increasing crude oil content, the maximum dry density increases, while the optimum water content decreases. Similarly, at a fixed contaminant content, increasing the bentonite content in the soil leads to increase in soil maximum dry density and the optimum moisture content. Moreover, direct shear tests revealed that at a specific bentonite content, higher contamination concentration causes lower internal friction angle. The effect of oil content on the coefficient of consolidation (Cv) and void ratio of soils with 0, 5, 10, 15, and 20 percent bentonite contents was studied. The results of consolidation tests indicated that at a fixed bentonite content Cv has an overall increasing pattern which is in its maximum amount at 5% oil content.

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27

A Mas, P., D. J-R Bouveresse, and I. Birlouez-Aragon. "Fluorescence spectroscopy for monitoring rapeseed oil upon heating." Czech Journal of Food Sciences 22, SI - Chem. Reactions in Foods V (January 1, 2004): S127—S129. http://dx.doi.org/10.17221/10634-cjfs.

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The aim of this work was to determine the heating effect on the thermo-degradation process of rapeseed oil (RO) by rapid fluorescence method. Reference measurements were carried out by chromatographic methods in order to compare results with those obtained by fluorescence spectroscopy. The main compounds which were monitored are polar compounds and tocopherols. During heating process, two temperatures were used: 171°C and 189°C for 4.5 h. The results have showed that the tocopherol content decreases, especially at the highest temperature, and the polar content increases of 20% at the end of heating. These results are in agreement with literature. PLS model was built in order to predict polar and tocopherol contents. The results obtained from this method were satisfactory.

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Carvalho, Luiz Paulo de, Josiane Isabela da Silva Rodrigues, and Francisco José Correia Farias. "Selection of cotton lines for high oil content." Pesquisa Agropecuária Brasileira 52, no. 7 (July 2017): 530–38. http://dx.doi.org/10.1590/s0100-204x2017000700007.

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Abstract: The objective of this work was to evaluate the oil content and characters related to fiber quality and yield in cotton lines (Gossypium hirsutum), in order to select genotypes with high oil content and acceptable levels of the other characters. Twenty-two F6 lines and three checks were cultivated in three field trials - two in the municipality of Apodi, in the state of Rio Grande do Norte, and one in the municipality of Barbalha, in the state of Ceará, both in Brazil. The genetic parameters and the genetic gain from selecting 20% of the lines were estimated according to their means in each environment and in the group of environments. Regarding oil content, there is genetic variability, and the selection based on the overall mean is indicated, since this character showed high heritability, with 4.58% expected gain. The lines selected with this criterion have oil contents between 23.52 and 24.51%, which are higher than those of the Brazilian cultivar BRS Aroeira with the highest grain oil content (22.04%).

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Fieldsend, A. "Influence of oil content on the equilibrium moisture content of evening primrose ( Oenothera SPP.) seeds." Acta Agronomica Hungarica 55, no. 4 (December 1, 2007): 485–89. http://dx.doi.org/10.1556/aagr.55.2007.4.8.

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Seed moisture content is a well-recognised index of safe storage. However, when in equilibrium with the storage environment it is merely an indicator of the relative humidity of the air, which is the primary regulator of the growth of moulds and insects. The relationship is influenced by the profile of the seed components. During the 1990s, significant increases in the seed oil content of evening primrose were achieved through plant breeding. This paper shows that the equilibrium moisture content of evening primrose seeds declines significantly with increasing oil content. Hence, the moisture isotherm is altered and newer cultivars must be stored at slightly lower seed moisture contents to ensure that seed and oil quality are maintained.

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Cruz, Elizangela Mércia de Oliveira, Jéssika Andreza Oliveira Pinto, Saymo Santos Fontes, Maria de Fátima Arrigoni-Blank, Leandro Bacci, Hugo César Ramos de Jesus, Darlisson de Alexandria Santos, Péricles Barreto Alves, and Arie Fitzgerald Blank. "Water Deficit and Seasonality Study on Essential Oil Constituents ofLippia gracilisSchauer Germplasm." Scientific World Journal 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/314626.

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The aim of this study was to analyze the chemical composition of the essential oil from leaves ofLippia gracilisgenotypes, in the dry and rainy seasons, and with and without irrigation. The extraction of essential oil was realized by hydrodistillation in a Clevenger apparatus. The chemical composition analysis was performed using a GC-MS/FID. The leaves of theL. gracilisgenotypes provide essential oil with content between 1.25% and 1.92% in the rainy season and 1.42% and 2.70% in the dry season; when irrigation was used the content was between 1.42% and 2.87%, without irrigation contents were between 1.60% and 3.00%. The chemical composition ofL. gracilisshowed high levels of terpenes. The major constituent of genotypes LGRA-106 was thymol and carvacrol was the major constituent for the other genotypes. Concentrations showed little variation between seasons, demonstrating the stability of the chemical composition ofL. graciliseven with different climatic conditions.

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He, Wen Xuan. "Exploration of Detecting Method of Waste Oil." Applied Mechanics and Materials 644-650 (September 2014): 939–42. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.939.

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In this paper, the relative change rates of content of conjugated fatty acid glycerides, content of tans-fatty acid glycerides, unsaturation and linear long-chain fatty acid glycerides were explored after being at high temperature for several hours by using FTIR-ATR. The results hints:1.Starting from 160°C, the contents of conjugated fatty acids glycerides and trans-fatty acid glycerids in the vegetable oils increase but unsaturation and content of linear long-chain fatty acid glycerides decreases with heating temperature and heating time increasing; 2. When heating temperature reaches 200°C or more, the heating time up to four hours or longer, the four indicators (conjugated fatty glycerids, trans-fatty acid glycerids, unsaturation and linear long-chain fatty acid glycerides) of five kinds of vegetable oils have substantial changes; 3. The content of linoleic acid in the vegetable oil has some contributions to the change amplitude of contents of conjugated fatty acid glycerides, and the content of oleic acid in the vegetable oil has some contributions to the change amplitude of content of trans-fatty acid glycerides. Because refined “waste oil” experiences a longer history at temperature higher than 200 °C compared to the vegetable oil, four index value and its variation can be used as specific indicators for it.

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Acimovic, Milica, Vele Tesevic, Marina Todosijevic, Snezana Oljaca, and Zeljko Dolijanovic. "Essential oil content and composition of aniseed." Zbornik Matice srpske za prirodne nauke, no. 128 (2015): 67–75. http://dx.doi.org/10.2298/zmspn1528067a.

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The field experiments were carried out during 2011 and 2012 in three localities in Vojvodina (Serbia) with the application of six different fertilizer regimes aimed at determining the content and composition of the aniseed essential oil. It was found that the average essential oil content of aniseed, obtained by hydrodistillation, was 3.72%. The weather conditions during the year and the locality had a statistically significant effect on the essential oil content, while different source of fertilizers was not statistically significant for the essential oil content and its composition. Essential oil composition was determined using GC-MS technique, and a total of 15 compounds were identified. It was found that the major component was trans-anethole, 94.78% on the average, and the coefficient of variation was 2%. The second most abundant component was ?-himachalene with 2.53% (CV 28%). All other components were present in less than 1%.

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Zhang, Jie, Zhao Yang Wang, Jing Xin Sun, Li Wei, Bin Song Wang, Jun Ma, and Zhong Xi Chen. "Ultrasound-UV Method Detect Oil Content of Oily Sludge from Daqing Oilfield." Advanced Materials Research 113-116 (June 2010): 2292–95. http://dx.doi.org/10.4028/www.scientific.net/amr.113-116.2292.

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Drained sludge of Daqing oilfield No.4 oil production plant was collected from bottoms of tanks, and the oil content was usually lower than 2%. In this paper, the contents of petroleum substances, total petroleum hydrocarbons (TPH) and animal and plant oil were investigated. Ultrasound-UV method was used to detect the oil content of oily sludge. Results showed that the best ultrasound time was 8 min and the best solid-liquid ratio for the extraction was about 1:20. The standard curve was constructed. The comparison between the ultrasound-UV method and the traditional method shows that the ultrasound-UV method is more suitable for the detection of oil content of oily sludge with lesser oil. Moreover, the methods of detecting sludge with lower oil content have been established.

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Alaa, Moalla, Soulayman Soulayman, Taan Abdelkarim, and Zgheib Walid. "Water/Heavy Fuel Oil Emulsion Production, Characterization and Combustion." International Journal of Renewable Energy Development 10, no. 3 (March 16, 2021): 597–605. http://dx.doi.org/10.14710/ijred.2021.34873.

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In order to produce a water/heavy fuel oil emulsion (W/HFO) with different water contents to cover the daily needs of a fire tube boiler or a water tube boiler, a special homogenizer is designed, constructed and tested. The produced emulsion is characterized and compared with the pure HFO properties. It is found experimentally in fire tube boiler that, the use of W/HFO emulsion with 8% of water content (W0.08/HFO0.92) instead of HFO leads to a saving rate of 13.56% in HFO. For explaining the obtained energy saving the term “equivalent heat value (EHV) of the W/HFO emulsions”, defined as the ratio of the W/HFO emulsion net calorific value to the HFO content in the emulsion, is used. Based on direct measurements, provided in this work, it was found that the equivalent heat value (EHV) increases with the water content in the water/heavy fuel oil (W/HFO). It reaches 1.06 times of HFO net calorific value at water content of 22.24%. The obtained, in the present work, experimental results demonstrate the dependence of the emulsion EHV on its water content. These results are in agreement with the results of other authors. Therefore, the contribution of water droplets in the emulsion combustion is verified. It is found experimentally that, the emitted CO, SO2 and H2S gases from the fire tube boiler chimney decreases by 5.66%. 3.99% and 48.77% respectively in the case of (W0.08/HFO0.92) emulsion use instead of HFO.

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Feng, Xue Dong, and Yan Fei Ma. "Effect of Sand Moisture Content on Diesel Oil Volatilization." Advanced Materials Research 282-283 (July 2011): 47–50. http://dx.doi.org/10.4028/www.scientific.net/amr.282-283.47.

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Volatilization of diesel oil in sand columns was conducted at the ambient temperature of 20 °C by spilling oil on the sand surface. The weight loss of oil was determined by pre and post weight of the sand columns and desiccant was measured on an electronic balance. The aim of this paper was to investigate the effect of moisture content on the volatilization of diesel oil in sand. The results show that the diesel oil and water in sand both volatilize at a linear rate with respect to time. The largest volatilization mass of diesel oil and water reach when the moisture contents are 8% and 20% respectively. Appropriate water content can help to pull the oil contaminants to the surface of the sand.

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Vonortas, A., Ch Templis, and N. Papayannakos. "Effect of Palm Oil Content on Deep Hydrodesulfurization of Gas Oil–Palm Oil Mixtures." Energy & Fuels 26, no. 6 (May 29, 2012): 3856–63. http://dx.doi.org/10.1021/ef300413f.

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Shamshad, Mohd, SK Dhillon, and Gurpreetkaur. "Heterosis for oil content and oil quality in sunflower(Helianthus annuusL.)." Current Advances in Agricultural Sciences(An International Journal) 8, no. 1 (2016): 44. http://dx.doi.org/10.5958/2394-4471.2016.00010.1.

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Kovatcheva, Natasha, Valtcho D. Zheljazkov, and Tess Astatkie. "Productivity, Oil Content, Composition, and Bioactivity of Oil-bearing Rose Accessions." HortScience 46, no. 5 (May 2011): 710–14. http://dx.doi.org/10.21273/hortsci.46.5.710.

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Rose oil production worldwide is based on different oil-bearing Rosa species. This 4-year study determined the essential oil content, constituents, and morphologic/phenologic characteristics of 25 varieties, chemotypes, and hybrids belonging to five Rosa species (R. damascena Mill., R. gallica L., R. centifolia L., and R. alba L.). Limits of variation of these indices were established for each variety, chemotype, and hybrid group. The essential oil content of R. damascena varied from 0.032% to 0.049% and that of hybrid roses from 0.037% to 0.05%. The highest essential oil content was found in R. damascena accession Svejen 74 and the lowest in R. alba. Within R. damascena, the weight of single flowers varied from 2.09 to 3.44 g, the number of petals from 22 to 28, the height of the plants from 61 to 128 cm, and the diameter of bushes from 53 to 118 cm. R. centifolia had the largest flowers. The essential oil of the various species showed moderate to no antimicrobial activity at 50 μg/mL and no significant antibacterial, antifungal, antileishmania, or antimalarial activity at this concentration. All the tested species and accessions could be grown in Bulgaria (and possibly in southeastern Europe and the northern Mediterranean) and provide comparable productivity to the traditional species R. damascena. Wide variations occurred in essential oil content and constituents and morphologic/phenologic characteristics of the tested Rosa species and accessions. The availability of various species and chemotypes within specific species offer an opportunity for production of oil-bearing roses and essential oils to meet market requirements of specific rose oils.

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Pamornnak, Burawich, Somchai Limsiroratana, and Mitchai Chongcheawchamnan. "Oil content determination scheme of postharvest oil palm for mobile devices." Biosystems Engineering 134 (June 2015): 8–19. http://dx.doi.org/10.1016/j.biosystemseng.2015.03.010.

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Schritt, Jannik. "Contesting the oil zone: Local content issues in Niger’s oil industry." Energy Research & Social Science 41 (July 2018): 259–69. http://dx.doi.org/10.1016/j.erss.2018.04.016.

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Hernández-Sánchez, N., and M. Gómez-del-Campo. "From NIR spectra to singular wavelengths for the estimation of the oil and water contents in olive fruits." Grasas y Aceites 69, no. 4 (October 5, 2018): 278. http://dx.doi.org/10.3989/gya.0457181.

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Knowledge about the oil and water contents in olive fruits is required to determine orchard management, harvest time, and the oil extraction process. The simplification of procedures and of equipment based on NIR Spectroscopy is of major interest. Estimation models for oil and water contents on a fresh matter basis were developed by partial least square regression with NIR spectral data (700 wavelengths). For raw absorbance data the r2 for the test set reached 0.9 and 0.92 for oil and water contents; and RPIQt was 4.9 and 4.3, respectively. The identification of a useful relation of the relative absorbance at 1724 nm and 1760 nm to the oil content allowed for restricting the wavelengths to three. For oil content the r2 showed 0.88 with ad RPIQt of 4.4. For water content the r2 value was 0.84 and the RPIQt was 3.1. Estimation performance with only three wavelengths was comparable to that obtained with PLSR with 700 variables.

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Mohamed, N., A. Mariod, S. Yagoub, and Y. Dagash. "Effect of irrigation intervals and fertilizers on chemical composition, minerals and fatty acids of safflower (Carthamus Tinctorius L.) seed." Acta Agronomica Hungarica 61, no. 3 (September 1, 2013): 227–36. http://dx.doi.org/10.1556/aagr.61.2013.3.6.

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The objective of this study was to determine the effect of different irrigation intervals (every 7 and every 14 days) and fertilizers (farmyard manure, pellet granules and urea) on the composition of safflower seed and its oil stability. Fertilizers have a significant effect on the carbohydrate, fat, ash and protein contents of safflower seed oil. Pellet granules slightly increased the carbohydrate content, while farmyard manure increased the fat and oil contents of safflower seed oil. On the other hand, urea and farmyard manure increased the fibre content compared with pellets, which slightly decreased it. Irrigation every 7 days increased the protein content. Farmyard manure significantly (P < 0.05) increased the mineral content (iron, potassium and calcium). The use of FTIR spectroscopy revealed that the period of storage significantly (P < 0.05) affects oil stability. The peak intensities (absorbencies) recorded for oil stored at zero time changed after storage for 1, 2 and 3 days, indicating a clear effect of storage time on the oil, and the bands 3008, 2923, 2854, 1747, 1654, 1463, 1377, 1238, 1163, 1099 and 723 exhibited a clear decrease in the intensity of the individual group vibrations, indicating a decrease in oil stability.

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Efimenko, S. G., and S. K. Efimenko. "Determination of oil content, linolenic and erucic acids contents in false flax seeds using IRspectrometry." Oil Crops 186, no. 2 (June 30, 2021): 50–59. http://dx.doi.org/10.25230/2412-608x-2021-2-186-50-59.

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Spectroscopy of near infrared reflection (NIRS) was used for estimation of biochemical indicators in seeds of false flax. The purpose of our work was to develop calibrating models for IR-analyzer MATRIXI for determination of weight percentage of oil, linolenic and erucic acids contents in oil of seeds in unbroken seeds of false flax (winter and spring forms). The researches were conducted in the biochemistry laboratory on false flax samples cultivated in 2016–2020 in the different environments of the Russian Federation. Oil content was determined with NMR-analyzer АМV 1006М according to the technique described in the State Standard 8.597-2010, percentage contents of linolenic and erucic acids in oil was estimated on the gas chromatograph “Chromatech – Kristal 5000” with an automatic dipper on a capillary column SolGelWax 30 m × 0.25 mm × 0.5 µcm. The best indicators of quality of the calibrating models (root mean square error of prediction, coefficient of determination, and meaning of a residual deflection of prediction for a rank reflected on a figure) were obtained by oil content (RMSEP = 0.20%, R 2 = 99.3, and RPD = 12.3), linolenic acid content (RMSEP = 0.35%, R 2 = 98.8, and RPD = 9.2) and erucic acid content (RMSEP = 0.14%, R 2 = 85.7, and RPD = 2.6). In a program OPUS LAB, we received a method “False flax 51” based on the developed calibrating models for a routine analysis for determination of oil content, linolenic and erucic acids contents in oil in the unbroken seeds of false flax in an average (9–20 g) in a cuvette with diameter of 51 mm. this method allows conducting express-estimation of false flax seeds for breeding traits with performance of more than 100 sample per seven hours.

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Kurt, C. "Variation in oil content and fatty acid composition of sesame accessions from different origins." Grasas y Aceites 69, no. 1 (March 22, 2018): 241. http://dx.doi.org/10.3989/gya.0997171.

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Oil content and fatty acid composition are very important parameters for the human consumption of oilseed crops. Twenty-four sesame accessions including seven collected from various geographical regions of Turkey and 11 from different countries were investigated under field conditions for two consecutive years (2015 and 2016). The sesame accessions varied widely in their oil content and fatty acid compositions. The oil content varied between 44.6 and 53.1% with an average value of 48.15%. The content of oleic acids, linoleic acid, linolenic acid, palmitic acid,and stearic acid varied between 36.13–43.63%, 39.13–46.38%, 0.28–0.4%, 8.19–10.26%, and 4.63–6.35%, respectively. When total oil content and fatty acid composition were compared, Turkish sesame showed wide variation in oil and fatty acid compositions compared to those from other countries. However, the accessions from other countries were fewer compared to those from Turkey. It is essential to compare oil and fatty acid composition using a large number of germ plasm from different origins. In sesame oil, the average contents of oleic acid and linoleic acid were 39.02% and 43.64%, respectively, and their combined average content was 82.66%, representing the major fatty acid components in the oil from the sesame accessions used in the present study. The results obtained in this study provide useful information for the identification of better parents with high linoleic and oleic acid contents for developing elite sesame varieties with traits which are beneficial to consumer health.

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Dwivedi, S. L., R. Jambunathan, S. N. Nigam, K. Raghunath, K. Ravi Shankar, and G. V. S. Nagabhushanam. "Relationship of Seed Mass to Oil and Protein Contents in Peanut (Arachis hypogaea L.)1." Peanut Science 17, no. 2 (July 1, 1990): 48–52. http://dx.doi.org/10.3146/i0095-3679-17-2-1.

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Abstract Seed mass, oil and protein contents are important quality traits in peanut (Arachis hypogaea L.). Sixty-four genotypes were grown for four seasons to study genetic variation and character association between these three traits. Graded seed samples of 33 genotypes were further studied for possible variation within genotype among grades for oil and protein contents. No significant association of seed mass with percent oil or protein contents was observed among the 64 genotypes. However, oil and protein contents were significantly negatively associated. Oil content variation within a genotype showed a significant linear increase as the seed mass increased in the graded samples, but no such relationship was observed with protein content. Genotypes with desirable traits for confectionery and/or oil types were identified and may be used for germplasm enhancement.

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Medici, Leonardo Oliveira, Salete Aparecida Gaziola, Vanderlei Aparecido Varisi, José Antonio Carmezini de Paula, Renato Rodrigues Ferreira, and Ricardo Antunes Azevedo. "Diallelic analysis for lysine and oil contents in maize grains." Scientia Agricola 66, no. 2 (April 2009): 204–9. http://dx.doi.org/10.1590/s0103-90162009000200009.

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Six S5 lines of maize, with differences for lysine and oil contents in grains, were used to carry out a complete series of diallelic crosses. The resulting 15 hybrids were grown in a field at two nitrogen levels (10 and 130 kg N ha-1). The general combining ability (GCA) and specific combining ability (SCA) were obtained by using the method 4, model I of Griffing for grain yield, and grain lysine and oil contents. Significant (p < 0.001) interaction was observed between GCA and N levels for grain yield, indicating the selection of different lines for each N level. This interaction was not significant for lysine content, but there were significant effects of GCA for this trait at both N levels (p < 0.1). Significant effects were not observed for GCA or SCA for oil content, however a positive correlation was observed between lysine and oil contents in the hybrids, in the lines and even in the control cultivars. The results indicate the effectiveness of selection for lysine content, irrespective of N level, in the studied non-opaque maize lines, and the possibility of achieving both high lysine and oil content in grains.

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Stakhina, Larisa D., Danil S. Petrenko, and Adina S. Spabekova. "The Effect of EOR Technologies on the Content of Petroporphyrins and Naphthenic Acids of Recovered Heavy Oils from Usinskoye Field." Key Engineering Materials 670 (October 2015): 39–43. http://dx.doi.org/10.4028/www.scientific.net/kem.670.39.

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The effect of EOR technologies on the contents of petroporphyrins and naphthenic acids in recovered crude oil was studied using heavy oil from Usinskoye oil field (Republic Komi), which has high density, high content nickel and vanadium porphyrin complexes, the oxygen compounds and naphthenic acids. It is found that EOR system in combination with thermal steam treatment injection brings about an increase in the content of vanadium porphyrin complexes of crude oils. As a result of the oil-displacement EOR system injection, the naphthenic acids content would decrease in heavy oils.

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48

Popovic, Vera, Milos Vidic, Djordje Jockovic, Jela Ikanovic, Snezana Jaksic, and Gorica Cvijanovic. "Variability and correlations between yield components of soybean [Glycine max (L.) Merr.]." Genetika 44, no. 1 (2012): 33–45. http://dx.doi.org/10.2298/gensr1201033p.

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NS soybean cultivars were assessed for variability of and correlations between yield components and the effect of genotype - environment interaction on yield, yield component and morphological characteristics. Experiments were carried out at Rimski Sancevi experiment field in 2009 and 2010. The following characteristics were evaluated: plant height (cm), height of first pod (cm), 1000-grain weight (g), grain yield (kg/ha) and the combined content of oil and protein in grain (%). Combined contents of oil and protein in grain soybean were determined by a non destructive method of near infrared spectroscopy on PERTEN DA 7000 (NIR/VIS Spectrophotometer). The studied characteristics varied significantly depending on genotype and year. The highest yield of 5273 kg/ha was obtained in 2009 with the genotype Victoria. Highest 1000-grain weights, 2009-2010, were achieved with the genotypes Valjevka and Victoria (149.27 g and 147.23 g). Maximum heights of first pod (19.40 cm) were recorded for the genotype Victoria, 2009-2010. Highest protein contents were obtained with the genotypes Valjevka and Victoria, 2009-2010, were and highest oil contents (21.73%) with the genotype Tea. Protein content was positively significantly correlated with 1000-grain weight and negatively significantly correlated with oil content, and negatively correlated with yield and the height of first pod. Oil content was positively correlated with the height of first pod. Thousand-grain weight was negatively highly significantly correlated with oil content in grain and negatively significantly correlated the height of first pod. The results of this study should facilitate further soybean breeding for improved seed yield and protein and oil contents.

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Lee, Cheng Pau, Jon Yi Hoo, and Michinao Hashimoto. "Effect of Oil Content on the Printability of Coconut Cream." International Journal of Bioprinting 7, no. 2 (April 30, 2021): 354. http://dx.doi.org/10.18063/ijb.v7i2.354.

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We developed a method to perform direct ink writing (DIW) three-dimensional (3D) printing of coconut-basedvproducts with high oil content by varying compositions of the coconut oil and the coconut cream. The addition of oils is particularly crucial in providing energy, developing neurological functions, and improving the palatability of food. Despite the potential merits of high oil-content foods, there have been limited studies on 3D printing of high oil-content foods. In particular, the effect of oil content on the printability of food inks has not been studied to date. 3D printing of food inks with high oil contents is challenging due to oil separation that leads to unpredictable changes in rheological properties. In this work, we surveyed the behavior of the mixture of the coconut oil and the coconut cream and identified the appropriate conditions for the food inks that show the printability in DIW 3D printing. We initially formulated coconut cream inks added with coconutoil that did not exhibit oil separation, and characterized the rheological properties of such inks. We successfully 3D-printed coconut cream with additional coconut oil and successfully fabricated 3D structures with inks containing 25% water with an additional 10% (w/w) of coconut oil. Texture profile analysis (TPA) suggested that the hardness index and the chewiness index of mesh-shaped 3D-printed coconut cream decreased due to an increase in the water content of the ink. Overall, this studyoffered an understanding of the stability of the food inks and demonstrated the fabrication of 3D colloidal food with controlledoil content, which can be applied to formulating foods with tunable oil content to cater to individual nutritional needs without compromising the stability of the inks.

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Zhang, Xiangxiang, Meiyan Hong, Heping Wan, Lixia Luo, Zeen Yu, and Ruixing Guo. "Identification of Key Genes Involved in Embryo Development and Differential Oil Accumulation in Two Contrasting Maize Genotypes." Genes 10, no. 12 (December 1, 2019): 993. http://dx.doi.org/10.3390/genes10120993.

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Maize is an important oil seed crop and a major food crop in different parts of the world. Since maize has relatively lower seed oil content as compared to other oil crops, efforts are continuing to improve its oil content percentage. In this study, we analyzed two contrasting maize genotypes with differential oil accumulation percentages. High oil-content (HOC) maize had 11% oil content while low oil-content (LOC) maize had significantly lower oil content (5.4%). Transmission electron microscopy revealed a higher accumulation of oil bodies in the HOC maize embryo as compared to LOC maize. Comparative RNA-sequencing analysis at different developmental stages of the seed embryos identified 739 genes that are constantly differentially expressed (DEGs) at all the six developmental stages from 15 days after pollination (DAP) to 40 DAP. Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis identified fatty acid metabolism and fatty acid biosynthesis as the most enriched biological pathways contributed by these DEGs. Notably, transcriptional changes are more intense at the early stages of embryo development as compared to later stages. In addition, pathways related to oil biosynthesis and their corresponding genes were more enriched at 30 DAP, which seems to be the key stage for oil accumulation. The study also identified 33 key DEGs involved in fatty acid and triacylglycerols biosynthesis, most of which were up-regulated in HOC, that may shape the differential oil contents in the two contrasting maize. Notably, we discovered that both acyl-CoA-dependent and acyl-CoA-independent processes are essential for the high oil accumulation in maize embryo.

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Journal articles on the topic 'Oil content'

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