scholarly journals VARIATIONS IN FATTY ACID COMPOSITION OF TEA LEAVES (CAMELLIA SINENSIS) DUE TO PLUCKING TIME AND CULTIVARS

2018 ◽  
Vol 54 (2C) ◽  
pp. 284
Author(s):  
Nguyen Thi Lan Anh
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Principal Component ◽  
Tea Leaves ◽  
Total Unsaturated Fatty Acid ◽  
Negative Effect ◽  
Green Tea Leaves ◽  
Total Fat

Fatty acid in green tea leaves is important flavour precursor which has a negative effect onaroma quality of black teas. In this study, fatty acid composition of three cultivars includingShan Chat Tien, Trung Du and PH11 plucked at different time was analyzed by GC-MS/MS.The results showed that C16:0, C18:2, C18:1, C18:0 and C18:3 were the most abundant fattyacids indentified in tea leaves. In particular, total saturated fatty acid in the tea leaves plucked inJune and September was higher than total unsaturated fatty acid and vice versa for sampleplucked in March. Principal component analysis (PCA) showed that fatty acid compositions insamples plucked in June of three cultivars were similar to each other and they were characterizedby C18:0, C22:0 and C20:0. The sample plucked in March and in September were characterizedby C18:1, C18:2 and C18:3, andC18:1, C16:1, C18:0, C14:1 and C14:0; respectively. Thesample plucked in March had the highest total fat content followed by sample plucked inSeptember and June. The results showed that plucking time and cultivars significantlyinfluenced the fatty acid composition of tea leaves.

scholarly journals Fatty acid composition including trans isomers of Serbian biscuits

2011 ◽  
Vol 65 (2) ◽  
pp. 139-146 ◽  
Author(s):  
Snezana Kravic ◽  
Zvonimir Suturovic ◽  
Jaroslava Svarc-Gajic ◽  
Zorica Stojanovic ◽  
Mira Pucarevic ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Lipid Fraction ◽  
Fats And Oils ◽  
Total Fatty Acids ◽  
The Mean ◽  
Total Fat

An experimental study was carried out with the aim of evaluating the quality of the lipid fraction of Serbian biscuits. Total fat contents of the biscuit samples ranged between 10.2% and 24.5%. The saturated, cis-monounsaturated and cis-polyunsaturated fatty acid contents were within the ranges of 18.585.6%, 10.649.9% and 2.713.3% of total fatty acids, respectively. The content of trans fatty acids (TFA) ranged from 0.0% to 42.5% and the mean was 10.2%. In a total of 34 investigated samples, 10 of them were found to be trans - free, 8 contained low level of TFA (under 2%), 4 samples contained between 2 and 10% of TFA, while 12 samples contained very high amounts of TFA (12.042.5%). The results obtained showed a considerable variability in fatty acid composition of biscuits which indicated that different types of fats and oils were used for production of biscuits in Serbia.

scholarly journals Grape Pomace Ingestion by Dry Cows Does Not Affect the Colostrum Nutrient and Fatty Acid Composition

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1633
Author(s):  
Michal Rolinec ◽  
Daniel Bíro ◽  
Milan Šimko ◽  
Miroslav Juráček ◽  
Ondrej Hanušovský ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Late Pregnancy ◽  
Grape Pomace ◽  
Farm Animals ◽  
Nutrient Concentrations ◽  
Nutrient Sources ◽  
Negative Effect

The utilisation of different by-products from the food industry as nutrient sources for farm animals is both possible and beneficial. Grape pomace is a by-product that contains polyphenols and fatty acids, both of which have the potential to improve the nutritional quality of cow colostrum. This study aimed to explore how the addition of grape pomace to the diet of dry cows affects the concentration of nutrients and fatty acids of colostrum. Sixteen Slovak spotted cows in late pregnancy were used in this study. From the seventh day before expected calving to the day of calving, cows in the grape pomace group received a diet supplemented with dried grape pomace, at 0.116 kg/cow/day. Colostrum samples were analysed for basal nutrients and fatty acid concentrations. Between the control and experimental groups, the nutrient and fatty acid concentrations of all the colostrum samples did not show significant differences. The nutrient levels in the colostrum from both groups of cows were typical, as related to the time from calving. The addition of the grape pomace into the diet of dry cows had no effect on nutrient concentrations and the fatty acid composition of the colostrum. The somatic cell score of the colostrum sampled at the 12th hour after calving (4.2 versus 2.6) was positively affected by grape pomace addition. The results of this study revealed that grape pomace (fed in an amount of 0.116 kg/cow/day) had no positive or negative effect on the base nutrients and fatty acids of cow colostrum, and, therefore, grape pomace can be used as a nutrient source for dry cows in small amounts.

scholarly journals Polymorphic effects of FABP4 and SCD genes on intramuscular fatty acid profiles in longissimus muscle from two cattle breeds

2015 ◽  
Vol 84 (4) ◽  
pp. 327-336 ◽  
Author(s):  
Radka Dujková ◽  
Yuvaraj Ranganathan ◽  
Aleš Dufek ◽  
Jan Macák ◽  
Jiří Bezdíček
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Principal Component ◽  
Potential Candidate ◽  
Longissimus Muscle ◽  
Fatty Acid Profiles ◽  
Total N ◽  
Fatty Acid Binding ◽  
Cattle Breeds

The aim of this study was to evaluate the polymorphic effects of two single nucleotide polymorphisms (SNPs) of fatty acid binding protein (FABP4) and stearoyl-CoA desaturase (SCD) genes on intramuscular fatty acid profiles in the longissimus muscle in two cattle breeds. Two previously reported SNPs of bovine FABP4 (7516G>C) and SCD (878C>T) were in turn assessed for their associations with intramuscular fatty acid profiles from the upper sirloin cuts of Aberdeen Angus and Blonde d’Aquitaine cattle. In total, 33 animals were genotyped using PCR-RFLP. Intramuscular fatty acid composition was evaluated using two complementary statistical approaches: a classical univariate regression model and a multivariate approach using a combination of Principal Component Analysis and Random Forests. Significant effect of FABP4 SNP genotypes was found for several fatty acids including C15:0, C17:0, C18:0, C14:1, C17:1, C18:2n6, C20:4n6, C20:5n3, C22:5n3, total n-3, n-6 and total SFA (P < 0.05). These results suggest that FABP4 is a potential candidate gene affecting fatty acid composition in beef cattle.

scholarly journals Stomata and Xylem Vessels Traits Improved by Melatonin Application Contribute to Enhancing Salt Tolerance and Fatty Acid Composition of Brassica napus L. Plants

Agronomy ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1186 ◽  
Author(s):  
Ibrahim A. A. Mohamed ◽  
Nesma Shalby ◽  
Ali M. A. El-Badri ◽  
Muhammad Hamzah Saleem ◽  
Mohammad Nauman Khan ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Oxidative Damage ◽  
Acid Composition ◽  
Salinity Stress ◽  
Unsaturated Fatty Acids ◽  
Oil Quality ◽  
Growth And Yield

Salinity stress is a limiting factor for the growth and yield quality of rapeseed. The potentiality of melatonin (MT; 0, 25, 50, and 100 µM) application as a seed priming agent in mediating K+/Na+ homeostasis and preventing the salinity stress mediated oxidative damage and photosynthetic inhibition was studied in two rapeseed cultivars. We found that 50 µM MT treatment imparted a very prominent impact on growth, metabolism of antioxidants, photosynthesis, osmolytes, secondary metabolites, yield, and fatty acids composition. Days required for appearance of first flower and 50% flowering were decreased by MT application. Exogenous MT treatment effectively decreased the oxidative damage by significantly declining the generation of superoxide and hydrogen peroxide under saline and non-saline conditions, as reflected in lowered lipid peroxidation, heightened membrane stability, and up-regulation of antioxidant enzymes (catalase, superoxide dismutase, and ascorbate peroxidase). Furthermore, MT application enhanced the chlorophyll content, photosynthetic rate, relative water content, K+/Na+ homeostasis, soluble sugars, and proline content. Moreover, MT application obviously improved the oil quality of rapeseed cultivars by reducing glucosinolates, saturated fatty acids (palmitic and arachidic acids), and enhancing unsaturated fatty acids (linolenic and oleic acids except erucic acid were reduced). Yield related-traits such as silique traits, seed yield per plant, 1000 seeds weight, seed oil content, and yield biomass traits were enhanced by MT application. The anatomical analysis of leaf and stem showed that stomatal and xylem vessels traits are associated with sodium chloride tolerance, yield, and seed fatty acid composition. These results suggest the supportive role of MT on the quality and quantity of rapeseed oil yield.

Prediction of total fat, fatty acid composition and nutritional parameters in fish fillets using MID-FTIR spectroscopy and chemometrics

LWT ◽  
2013 ◽  
Vol 52 (1) ◽  
pp. 12-20 ◽  
Author(s):  
Maylet Hernández-Martínez ◽  
Tzayhrí Gallardo-Velázquez ◽  
Guillermo Osorio-Revilla ◽  
Norma Almaraz-Abarca ◽  
Alejandro Ponce-Mendoza ◽  
...  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Ftir Spectroscopy ◽  
Acid Composition ◽  
Nutritional Parameters ◽  
Fish Fillets ◽  
Total Fat
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