Supplemental dietary oils rich in oleic acid or linoleic acid attenuate egg yolk and tissue n-3 polyunsaturated fatty acid contents in laying hens co-fed oils enriched in either stearidonic acid or α-linolenic acid1

2021 ◽  
pp. 102322
Author(s):  
Robert G. Elkin ◽  
Ahmed S.A. El-Zenary ◽  
Rebecca Bomberger ◽  
Kevin J. Harvatine
Keyword(s):  
Oleic Acid ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Polyunsaturated Fatty Acid ◽  
Laying Hens ◽  
Egg Yolk ◽  
Stearidonic Acid ◽  
Dietary Oils

Effects of fatty acid sources on conjugated linoleic acid (CLA) and other fatty acids in dairy milk

2007 ◽  
Vol 2007 ◽  
pp. 20-20
Author(s):  
Nonthasak Piamphon ◽  
Chalong Wachirapakorn ◽  
Metha Wanapat ◽  
Chainarong Nawanukrow
Keyword(s):  
Oleic Acid ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Milk Fat ◽  
Groundnut Oil ◽  
Rumen Microbes ◽  
Dietary Oils ◽  
Dairy Milk ◽  
Plant Sources

Conjugated linoleic acid (CLA) is aniticarcinogenic, antiatherogenic and antidiabetogenic actives. Research has therefore focused on methods of increasing CLA content in milk fat. Amount of CLA in milk fat was highly related to biohydrogenation of unsaturated fatty acid of rumen microbes. (Bauman et al., 1999). Linoleic acid (C18:2) were the precursors of CLA synthesis. The CLA was also synthesized in the mammary gland of lactating ruminants, using oleic acid (C18:1) as a precursor and activity of delta 9-desaturase (Griinari and Bauman, 1999). Linoleic acid is high in soybean oil (SO) (54.4%) and tuna oil (TO) (20.3%) while oleic acid is high in pork oil (PO) (43.5%) and groundnut oil (GO) (40.7%). Therefore, the objective of this experiment was to compare the increasing of CLA and fatty acid composition in milk fat form cows fed dietary oils obtained from either animal or plant sources.

scholarly journals The Relationship of Plasma Linoleic Acid and Oleic Acid Levels with Markers of Inflammation and Glycemia in Healthy Adults

2020 ◽  
Vol 4 (Supplement_2) ◽  
pp. 618-618
Author(s):  
Rachel Cole ◽  
Austin Angelotti ◽  
Martha Belury
Keyword(s):  
Body Composition ◽  
Oleic Acid ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Grip Strength ◽  
Healthy Adults ◽  
Dietary Oils ◽  
Hmw Adiponectin ◽  
Relationship Of ◽  
The Relationship

Abstract Objectives Higher blood levels of the essential fatty acid, linoleic acid (LA), are associated with a decreased risk of type 2 diabetes.  However, many dietary oils once high in LA are now low in LA and high in oleic acid (OA).  We have previously shown in healthy adults that supplementation with a high LA oil can increase plasma LA levels and decrease plasma OA levels.  The current study examines the relationship of habitual levels of plasma LA and OA with markers of body composition, inflammation and glycemia in healthy adults. Methods Data from baseline visit were analyzed from 127 health adults participating in a 2-week study of the effect of dietary oils on blood fatty acid profiles.  Plasma fatty acid composition was measured by gas chromatography. Insulin, glucose, total and high molecular weight (HMW) adiponectin, tumor necrosis factor receptor 2 (TNF-r2) and lipopolysaccharide binding protein (LBP) were measured in fasting plasma samples.  Body mass index (BMI) and sagittal diameter (SAD) were measured as markers of body composition.  Grip strength was measured as a marker of muscle strength and gait speed was measured as a marker of muscle function.  Linear regression was used to assess the association of study measurements to plasma LA or OA.  Results were adjusted for sex, age, physical activity and BMI. Results Plasma LA was negatively associated with both BMI and SAD while plasma OA was positively associated with both insulin and grip strength.  In males, but not females, higher plasma LA was associated with higher HMW adiponectin while higher plasma OA was positively associated with fasting glucose.  Neither plasma LA or OA were associated with total adiponectin, TNF-r2, LBP or gait speed. Conclusions Higher levels of plasma LA predicted for lower measures of adiposity in both males and females and higher HMW adiponectin levels in males. Higher levels of plasm OA predicted for increased grip strength and higher glycemia, particularly in men.  To our knowledge no randomized controlled trial has compared LA or OA supplementation on body composition, glycemia, and adiponectin in healthy men and women. Funding Sources Funding was provided by the Carol S. Kennedy Professorship and the Ohio Agriculture Research and Development Center.

scholarly journals Yumurtacı Tavuk Rasyonlarına Spirulina platensis İlave Edilmesinin Yumurta Kolesterol Seviyesi ve Yağ Asit Kompozisyonuna Etkisi

2021 ◽  
Vol 9 (3) ◽  
pp. 584-589
Author(s):  
Meltem Tufan ◽  
Hasan Rüştü Kutlu
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Cholesterol Level ◽  
Acid Composition ◽  
Spirulina Platensis ◽  
Egg Yolk ◽  
Experimental Period ◽  
Stearidonic Acid

Spirulina platensis is a photosynthetic, single-cell microalgae. Microalgae could be utilized for the production of several chemicals which are either unique to the algae or found at relatively high concentrations and command a high market value. In this respect, Spirulina is one of the more promising microalgae. It is especially rich, relative to other sources, in the polyunsaturated fatty acid γ-linolenic acid (GLA) and in pigments such as phycocyanin, myxoxanthophyl and zeaxanthin. Spirulina containing 5-6% total lipid ratio, 1.5-2% polyunsaturated fatty acids (PUFAs), contains 36% of α-linoleic acid as total PUFAs. It also contains precious fatty acids such as Linoleic Acid, Stearidonic Acid, Eicosapentaenoic Acid, Dodosahexaenoic Acid, Arachidonic Acid. The present study was conducted to evaluate whether dietary Spirulina would affect egg cholesterol level and fatty acid composition of ATAK-S. Seventy two similar weight layer hens at the 38 weeks age were randomly divided to four groups comprising 18 birds each. The hens were fed with standard layer diets containing %0, %0.5, %1, %2 Spirulina for 8 weeks. The hens were housed in individual cages. 16:8 hours light:dark photoperiod was employed. Feed and water were given ad libitum. Egg cholesterol was assessed by weekly and the fatty acid composition of the egg yolk was analyzed at the end of experimental period. The results showed that dietary supplemental Spirulina did not have significant effect on egg yolk cholesterol level, but the fatty acid composition is significant affected by the ratio of linolenic acids.

scholarly journals Comparison of Oil Content and Fatty Acid Profile of Ten NewCamellia oleiferaCultivars

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Chunying Yang ◽  
Xueming Liu ◽  
Zhiyi Chen ◽  
Yaosheng Lin ◽  
Siyuan Wang
Keyword(s):  
Oleic Acid ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Oil Content ◽  
Palmitoleic Acid ◽  
Eicosenoic Acid ◽  
Camellia Oleifera ◽  
Average Ratio ◽  
Mature Seeds ◽  
New Cultivars

The oil contents and fatty acid (FA) compositions of ten new and one wildCamellia oleiferavarieties were investigated. Oil contents in camellia seeds from newC. oleiferavaried with cultivars from 41.92% to 53.30% and were affected by cultivation place. Average oil content (47.83%) of dry seeds from all ten new cultivars was almost the same as that of wild commonC. oleiferaseeds (47.06%). NewC. oleiferacultivars contained similar FA compositions which included palmitic acid (C16:0, PA), palmitoleic acid (C16:1), stearic acid (C18:0, SA), oleic acid (C18:1, OA), linoleic acid (C18:2, LA), linolenic acid (C18:3), eicosenoic acid (C20:1), and tetracosenoic acid (C24:1). Predominant FAs in mature seeds were OA (75.78%~81.39%), LA (4.85%~10.79%), PA (7.68%~10.01%), and SA (1.46%~2.97%) and OA had the least coefficient of variation among different new cultivars. Average ratio of single FA of ten artificialC. oleiferacultivars was consistent with that of wild commonC. oleifera. All cultivars contained the same ratios of saturated FA (SFA) and unsaturated FA (USFA). Oil contents and FA profiles of new cultivars were not significantly affected by breeding and selection.

Effects of feeding ryegrass of varying maturity on the metabolism and composition of lipids in the rumen of sheep

1986 ◽  
Vol 106 (3) ◽  
pp. 445-448 ◽  
Author(s):  
T. Gerson ◽  
A. John ◽  
A. S. D. King
Keyword(s):  
Fatty Acid ◽  
Lipid Metabolism ◽  
Linoleic Acid ◽  
Blood Plasma ◽  
Polyunsaturated Fatty Acid ◽  
Perennial Ryegrass ◽  
Crude Protein ◽  
Linseed Oil ◽  
Triacyl Glycerol

SummaryTwo experiments were carried out to test the effects of ryegrass maturity on rumen lipid metabolism. In the first experiment the effect of stage of maturity of perennial ryegrass on lipid metabolism in the rumen was studied with grazing sheep fitted with rumen cannulae. The pasture was either immature (13·8% crude protein), mature (8·1% crude protein) or senescent (5·5% crude protein).The ratesin vitroof triacyl glycerol lipolysis and linoleic acid (18: 2w6) hydrogenation were found to decrease with increasing age of the ryegrass.In the second experiment the sheep were dosed with emulsified linseed oil (30 g) via rumen cannulae while grazing immature or senescent ryegrass and the rumen digesta and blood plasma sampled at 0, 4 and 8 h after dosing.The proportions of linseed oil retained in the rumen were greater and blood plasma linoleic (18:2w6) and linolenic (18:3w3) acid concentrations higher when senescent ryegrass was fed.It was concluded that the rates of rumen lipolysis and hydrogenation decreased with the age of pasture and that after dosing with linseed oil the polyunsaturated fatty acid concentrations in blood plasma increased.

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