scholarly journals Development of Technology for Producing Beef With A Modified Fatty Acid Composition

2019 ◽  
Vol 9 (1) ◽  
pp. 3825-3828
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Docosahexaenoic Acid ◽  
Acid Composition ◽  
Linseed Oil ◽  
Docosapentaenoic Acid ◽  
Long Chain Fatty Acids ◽  
Muscle Lipids ◽  
Long Chain

The article presents the results of an assessment of the effect of making oil (Echium vulgare) rich in 18: 4 n-3 PUFAs on the fatty acid composition and qualitative indicators of beef. The introduction of this oil suggested an increase in the deposition of C18: 3n-3 and the long chain fatty acids C20 and C22, eicosapentaenoic acid (EPA), docosapentaenoic acid (DPA) and docosahexaenoic acid (DHA) in muscle lipids. It was found that the introduction of echium oil or linseed oil in the diet of cattle contributed to the improvement of the profile of long-chain C20 fatty acids in beef, but had a negligible effect on its quality indicators

The effects of fat source and breed on the fatty acid composition of lamb muscle and adipose tissue

1999 ◽  
Vol 1999 ◽  
pp. 115-115 ◽  
Author(s):  
A.M. Wachira ◽  
L.A. Sinclair ◽  
R.G. Wilkinson ◽  
G. Demirel ◽  
M. Enser ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Adipose Tissue ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Vitamin E ◽  
Fish Oil ◽  
Acid Composition ◽  
Previous Experiment ◽  
Dietary Pufa ◽  
Long Chain

The benefits of long chain polyunsaturated fatty acids (PUFA) to human health, especially those of the n-3 series are now widely recognised. In a previous experiment (Wachira et al. 1998) supplementing diets with whole linseed or fish oil increased n-3 fatty acid levels in lamb muscle. To raise these further the whole linseed can be treated with formaldehyde to increase protection in the rumen. Dietary antioxidants such as vitamin E can control lipid oxidation but information on their effects on lamb performance and fatty acid composition is limited. The current experiments investigated the effects of different dietary PUFA sources and vitamin E levels on growth and fatty acid composition in two sheep breeds. Detailed results of the effects of vitamin E are presented in the accompanying abstract by Enser et al.

scholarly journals Biochemical Markers for Puberty in the Monkey Testis: Desmosterol and Docosahexaenoic Acid1

1997 ◽  
Vol 82 (6) ◽  
pp. 1911-1916 ◽  
Author(s):  
William E. Connor ◽  
Don S. Lin ◽  
Martha Neuringer
Keyword(s):  
Fatty Acids ◽  
Young Adults ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Docosahexaenoic Acid ◽  
Old Age ◽  
Acid Composition ◽  
Lipid Composition ◽  
Rhesus Monkeys ◽  
Fatty Acid Pattern

Abstract We previously reported that the sperm of rhesus monkeys and humans uniquely contain large amounts of desmosterol not found in other tissues and have a high concentration of the highly polyunsaturated n-3 fatty acid, docosahexaenoic acid (22:6 n-3). However, the lipid composition of the testis, from which sperm originate, is unknown. During puberty, the testis undergoes remarkable morphological changes as testosterone levels rise and sperm production begins. We hypothesized that testicular maturation might also involve dramatic changes in lipid composition. Accordingly, we characterized the sterol and fatty acid composition of the testis of rhesus monkeys throughout the lifespan, from birth to old age. Although the cholesterol content in the testis remained relatively unchanged throughout life, the desmosterol content first decreased from 59 μg/g in infants to 6 μg/g in prepubertal monkeys, increased to 83 μg/g during puberty, and reached a plateau of 248 μg/g in the young adult, where it remained into old age. The polyunsaturated fatty acid composition of the testis also changed markedly. Docosahexaenoic acid (22:6 n-3) increased from 5.1% of total fatty acids in infants and juveniles to 18.1% in postpubertal young adults. Although some n-6 fatty acids, arachidonic (20:4 n-6) and linoleic (18:2 n-6), decreased from 16.0% and 10.0% in prepubertal juveniles, respectively, to 7.1% and 3.3% in young adults; dihomogamma-linolenic acid (20:3 n-6), the precursor of 1 series PGs, increased greatly from 1.8% to 10.3%. Similar changes occurred in both membrane and storage lipids (phospholipids and triglycerides), respectively. After puberty, the testicular fatty acid pattern remained stable into old age. Our data demonstrated that puberty is accompanied by substantial changes in the lipid composition of the primate testis. These changes suggest that desmosterol and both n-3 and n-6 polyunsaturated fatty acids may have important roles in sexual maturation.

scholarly journals Polyunsaturated fatty acid concentrations in human hindmilk are stable throughout 12-months of lactation and provide a sustained intake to the infant during exclusive breastfeeding: an Italian study

2000 ◽  
Vol 84 (1) ◽  
pp. 103-109 ◽  
Author(s):  
Franca Marangoni ◽  
Carlo Agostoni ◽  
Anna M. Lammard ◽  
Marcello Giovannini ◽  
Claudio Galli ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acids ◽  
Human Milk ◽  
Acid Composition ◽  
Saturated Fatty Acids ◽  
Total Fat ◽  
Extended Lactation ◽  
Long Chain

While a wealth of data on the fatty acid composition of mature human milk has been published, limited information is available on the quantities of individual fatty acids supplied to the suckling infant with maternal milk, through the whole first year of life. Our aim was to qualitatively and quantitatively evaluate the fatty acid composition of human milk from Italian mothers, throughout extended lactation with particular emphasis on the long-chain polyunsaturated fatty acids. We have thus measured the total fat content and the concentrations of major fatty acids by quantitative GLC in pooled breast hindmilk collected from all feedings over 24 h at colostrum, 1, 3, 6, 9 and 12 months in ten mothers recruited after delivery of full-term infants. Total saturated fatty acids progressively increase and total monounsaturated progressively decrease as percentage levels, while among long-chain polyunsaturated fatty acids, percentages of arachidonic acid and docosahexaenoic acid decrease from colostrum up to the third month. Hindmilk total lipids (mg/dl) rise more than twofold up to 3 months, and then remain stable. The amounts (mg/dl) of linoleic acid and α-linolenic acid progressively increase, following the trend of total fat, while arachidonic and docosahexaenoic concentrations (mg/dl) remain stable throughout the whole nursing period. Assessment of the intakes per kg body weight shows different trends for the individual major long-chain polyunsaturated fatty acids supplied to the infant from hindmilk during exclusive breast-feeding (3 months). This information may be useful for the evaluation of infant intakes during extended lactation.

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