Change in ?-tocopherol contents, lipid oxidation and fatty acid profile in eggs enriched with linolenic acid or very long-chain ?3 polyunsaturated fatty acids after different processing methods

2003 ◽  
Vol 83 (8) ◽  
pp. 820-829 ◽  
Author(s):  
Luc�a Cortinas ◽  
Jaume Galobart ◽  
Ana C Barroeta ◽  
Mar�a D Baucells ◽  
Michael A Grashorn
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acids ◽  
Lipid Oxidation ◽  
Linolenic Acid ◽  
Fatty Acid Profile ◽  
Processing Methods ◽  
Long Chain

scholarly journals Seasonal variations in the fatty acid profile of milk from yaks grazing on the Qinghai-Tibetan plateau

2013 ◽  
Vol 80 (4) ◽  
pp. 410-417 ◽  
Author(s):  
Luming Ding ◽  
Yupeng Wang ◽  
Michael Kreuzer ◽  
Xusheng Guo ◽  
Jiandui Mi ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acids ◽  
Linolenic Acid ◽  
Fatty Acid Profile ◽  
Milk Fat ◽  
Vaccenic Acid ◽  
Yak Milk ◽  
High Concentrations ◽  
Tibetan Herders

An experiment was conducted to study the seasonal changes in the fatty acid profile of milk from yaks (Bos grunniens) when kept at altitudes of 3000 m above sea level (a.s.l.) and higher. Data and samples were collected in summer (July), autumn (September), winter (November) and spring (March) from ten lactating yaks (four in spring). The yaks grazed pastures adjacent to the farm building throughout the year. In spring only they received 0·6 kg crop by-products per day (dry matter basis). Fresh alpine grasses, available in summer and autumn, showed high concentrations of α-linolenic acid (46–51 g/100 g lipids) compared with the dry, yellow vegetation of winter and spring (16 g/100 g lipids). In autumn and summer, the milk fat had higher concentrations of polyunsaturated fatty acids than in winter. These polyunsaturated fatty acids were comprised of vaccenic acid, rumenic acid and α-linolenic acid, which are all considered beneficial to human health. The rare fatty acid, γ-linolenic acid, was also detected in yak milk, especially in the milk obtained in spring. The results suggest that yak milk, which is the most important basic food of the Tibetan herders, has the most favourable fatty acid profile when yaks grazed green pasture, which also corresponds to the period of highest milk production.

Effect of wilting and type of additive on the fatty acid composition of grass silage

2002 ◽  
Vol 2002 ◽  
pp. 49-49
Author(s):  
H.E. Warren ◽  
J.K.S. Tweed ◽  
S.J. Youell ◽  
R. J. Dewhurst ◽  
J.D. Wood ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acids ◽  
Linolenic Acid ◽  
Fatty Acid Profile ◽  
Acid Composition ◽  
Nutritional Value ◽  
Red Clover ◽  
Grass Silage

Forages, such as grass and red clover, are a rich source of n -3 polyunsaturated fatty acids, especially α-linolenic acid (C18:3n -3), and may be used as a method of improving the nutritional value of ruminant products. Silage is an important feed for cattle, therefore, a study was carried out to elucidate the effects of wilting and the use of additives on the fatty acid profile of the resultant silage.

The effect of whole linseed or xylose treated whole linseed on dairy cow performance and level of the fatty acids C18:3, C20:5 and C22:6 in milk fat

2000 ◽  
Vol 25 ◽  
pp. 131-136 ◽  
Author(s):  
R.J. Mansbridge ◽  
J.S. Blake ◽  
C.A. Collins
Keyword(s):  
Cardiovascular Disease ◽  
Fatty Acids ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acids ◽  
Dairy Cows ◽  
Linolenic Acid ◽  
Milk Fat ◽  
Bovine Milk ◽  
Docosahexaenoic Acids ◽  
Long Chain

AbstractThe Committee on Medical Aspects of Food Policy report Nutritional Aspects of Cardiovascular Disease recommended increased dietary intakes of the long chain polyunsaturated fatty acids eicosapentaenoic acid and docosahexaenoic acid to help protect against cardiovascular disease. There is some evidence that a-linolenic acid can be elongated and desaturated by mammalian enzyme systems to produce small amounts of eicosapentaenoic and docosahexaenoic acids. Whole linseeds are rich in a–linolenic acid, and it has been suggested that feeding this oilseed to dairy cows may result in higher levels of the long chain polyunsaturated fatty acids in bovine milk. To examine this hypothesis, the effect of feeding whole ground linseed and xylose treated whole ground linseed on the performance and milk composition of dairy cows was investigated.Either form of whole linseed reduced dry matter intakes and milk protein concentration. The xylose treated whole linseed increased milk yield, but neither linseed source changed milk fat concentration. Levels of milk a-linolenic acid increased to 1.2 g/100 g fatty acid when whole ground linseed was fed, and to 1.5 g/100 g fatty acid with the xylose treated linseed compared with 0.7 g/100 g fatty acid for cows fed the control diet. The efficiency of incorporation of additional dietary a-linolenic acid into milk fat was estimated to be 1.6 and 3.4% for the whole ground and xylose treated whole ground linseed respectively. Feeding whole ground linseed increased the proportion of a-linolenic acid in milk fat, but there was no evidence of eicosapentaenoic and docosahexaenoic acids in milk fat, suggesting that if any elongation and desaturation of a-linolenic acid occurs in dairy cows, none is transferred to milk.

scholarly journals The influence of α-linolenic acid (18: 3ω3) on the metabolism of γ-linolenic acid (18: 3ω6) in the rat

1977 ◽  
Vol 38 (1) ◽  
pp. 137-140 ◽  
Author(s):  
A. G. Hassam
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acids ◽  
Linolenic Acid ◽  
Essential Fatty Acid ◽  
List Type ◽  
Dietary Energy ◽  
Type Number ◽  
Essential Fatty Acid Deficient ◽  
Long Chain

1.Essential fatty acid-deficient rats were fed γ-linolenic acid (18:3ω6) at 2 % dietary energy and α-linolenic acid (18:3ω3) at 0, 1.6, 2.8 and 4.0 % of the dietary energy.2.18:3ω3 at 1.6% apparently inhibits the synthesis of the C20 and C22 ω6 long-chain polyunsaturated fatty acids (ω6 LC-PUFA) metabolized from 18:3ω6.3.However, increasing the dietary levels of 18:3ω3 from 1.6 to 4.0% has no further influence.4.The results suggest that dietary 18:3ω6 is an efficient precursor for the ω6 LC-PUFA synthesis even in the presence of 18:3ω3.

scholarly journals Fatty acid profile and composition of milk protein fraction in dairy cows fed long-chain unsaturated fatty acids during the transition period

2013 ◽  
Vol 42 (11) ◽  
pp. 813-823 ◽  
Author(s):  
Francisco Palma Rennó ◽  
José Esler de Freitas Júnior ◽  
Jefferson Rodrigues Gandra ◽  
Lenita Camargo Verdurico ◽  
Marcos Veiga dos Santos ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Dairy Cows ◽  
Fatty Acid Profile ◽  
Protein Fraction ◽  
Milk Protein ◽  
Unsaturated Fatty Acids ◽  
Transition Period ◽  
Long Chain

Long-chain n-3 polyunsaturated fatty acids contained in liver and muscle tissues of Okinawan long-spine porcupinefish (Diodon holocanthus Linnaeus 1758)

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Yutaka Tashiro
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acids ◽  
Ryukyu Islands ◽  
Okinawa Island ◽  
Content Type ◽  
Muscle Tissues ◽  
The Ryukyu Islands ◽  
Total Fatty Acids ◽  
Long Chain

Purpose This study aimed to analyze the lipid content and fatty acid composition in the liver and muscle of a porcupinefish species inhabiting waters around the Ryukyu Islands to investigate their potential as a source of long-chain n-3 polyunsaturated fatty acids (LC-PUFAs). Design/methodology/approach Porcupinefish were collected along the Okinawa Island coast. The composition of fatty acids and cholesterol in both liver and muscle were analyzed using a gas chromatograph mass spectrometer. Findings The liver of Okinawan long-spine porcupinefish was rich in lipids whose content correlated to the proportion of liver/body weight. Fatty acid compositions in their liver and muscles were similar to each other. LC-PUFAs occupied 44% of total fatty acids, with docosahexaenoic acid (DHA) being the dominant (42%), whereas eicosapentaenoic acid occupied 2.4%. The liver contained 1,690 mg of cholesterol and 14.8 g of DHA per 100 g, whose proportion decreased in summer compared to other seasons (p = 0.036). Originality/value The liver of Okinawan long-spine porcupinefish, which has not yet been commercially used although its non-toxicity is claimed, can be an excellent source of LC-PUFAs, especially DHA, accentuating its potential in food supplements’ production.

Sign in / Sign up

Export Citation Format

Share Document