A rapid spectrophotometric method for determining the linoleic and linolenic acid components of soybean oil

1956 ◽  
Vol 33 (4) ◽  
pp. 149-152 ◽  
Author(s):  
F. I. Collins ◽  
V. E. Sedgwick
Keyword(s):  
Soybean Oil ◽  
Linolenic Acid ◽  
Spectrophotometric Method

scholarly journals Formation of conjugated double bonds in soybean oil with iodine as a catalyst

2016 ◽  
Vol 81 (2) ◽  
pp. 141-151 ◽  
Author(s):  
Jie Yan ◽  
Jinlan Yang ◽  
Rifu Yang ◽  
Haifen He ◽  
Qihai Liu ◽  
...  
Keyword(s):  
Linoleic Acid ◽  
Reaction Time ◽  
Soybean Oil ◽  
Linolenic Acid ◽  
Conversion Rate ◽  
Raw Material ◽  
Catalyst Loading ◽  
Optimal Conditions ◽  
Trans Isomers ◽  
High Conversion Rate

A method for the iodine-catalyzed conjugation of soybean oil was developed, and the conjugated product was analyzed by UV, IR, and 1H NMR. The results indicated that the optimal conditions for conjugation included a temperature of 180?C, a catalyst loading of 0.5 wt.% and a reaction time of 3 h, at which the concentration of conjugated linoleic acid was 1.51 mol L-1, with 92 % conversion, the CLNA reached 0.225 mol L-1 when the temperature was 130?C, a catalyst loading of 0.5 wt.%, and a reaction time of 3 h with a conversion rate of 99.9 %. The reaction predominantly produced trans-trans, trans-cis and cis-trans isomers. It was also revealed that the conjugation of linolenic acid was much faster than that of linoleic acid. The method possessed the advantages of a short procedure, a high conversion rate, and no methyl esterification of the raw material, and it was an environmentally friendly technology that does not use solvents.

Milk production and milk composition of dairy cows fed Lac100® or whole flaxseed

2005 ◽  
Vol 85 (3) ◽  
pp. 413-416 ◽  
Author(s):  
F. B. Cavalieri ◽  
G. T. Santos ◽  
M. Matsushita ◽  
H. V. Petit ◽  
L. P. Rigolon ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Linoleic Acid ◽  
Soybean Oil ◽  
Dairy Cows ◽  
Key Words ◽  
Linolenic Acid ◽  
Milk Production ◽  
Milk Composition ◽  
Alpha Linolenic Acid ◽  
Calcium Salts

Cows were fed whole flaxseed or calcium salts of soybean oil as a fat source. Cows fed flaxseed had lower (P < 0.01) milk yield and higher (P < 0.01) percentages of fat and protein than cows fed calcium salts. Feeding whole flaxseed and calcium salts of soybean oil increased, respectively, the concentrations of alpha-linolenic acid and conjugated linoleic acid in milk. Key words: Flaxseed, fatty acids, fat supplement

Effect of Dietary Replacement of Soybean Oil with Different Sources of Gamma-Linolenic Acid on Fatty Acid Composition of Nile Tilapia

2014 ◽  
Vol 92 (2) ◽  
pp. 225-231 ◽  
Author(s):  
Vanessa Vivian Almeida Schneider ◽  
Fabiana Carbonera ◽  
Ana Paula Lopes ◽  
Oscar Oliveira Santos ◽  
Cláudio Celestino Oliveira ◽  
...  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Soybean Oil ◽  
Linolenic Acid ◽  
Acid Composition ◽  
Nile Tilapia ◽  
Gamma Linolenic Acid ◽  
Different Sources

Effect of Substitution of High Stearic Low Linolenic Acid Soybean Oil for Hydrogenated Soybean Oil on Fatty Acid Intake

Lipids ◽  
2008 ◽  
Vol 43 (5) ◽  
pp. 451-456 ◽  
Author(s):  
Maureen A. DiRienzo ◽  
Shawna L. Lemke ◽  
Barbara J. Petersen ◽  
Kim M. Smith
Keyword(s):  
Fatty Acid ◽  
Soybean Oil ◽  
Linolenic Acid ◽  
Fatty Acid Intake ◽  
Acid Intake ◽  
Low Linolenic Acid ◽  
Low Linolenic ◽  
Hydrogenated Soybean Oil

scholarly journals Effect of Vegetable Oil Fortified Feeds on the Content of Fatty Acids in Breast and Thigh Muscles in Broiler Chickens

2010 ◽  
Vol 79 (9) ◽  
pp. S21-S28 ◽  
Author(s):  
Tereza Krejčí-Treu ◽  
Eva Straková ◽  
Pavel Suchý ◽  
Ivan Herzig
Keyword(s):  
Fatty Acids ◽  
Oleic Acid ◽  
Linoleic Acid ◽  
Soybean Oil ◽  
Olive Oil ◽  
Linolenic Acid ◽  
Vegetable Oils ◽  
Broiler Chickens ◽  
Flaxseed Oil ◽  
Thigh Muscles

The main objective of this work was to compare the effect of six vegetable oils added to feeding mixtures that were administered to broiler chickens on the content of major fatty acids in chicken meat. The experiment started with 90 one-day-old Ross 308 meat hybrid male chickens that were divided into six groups. Chickens were fed complete feeding mixtures for the prefattening (BR1), fattening (BR2), and post-fattening (BR3) of broiler chickens. The BR1 feeding mixture was administered to chickens aged 1-10 days, the BR2 feeding mixture was given from Day 11 to Day 30, and the BR3 feeding mixture was then administered until Day 42. The BR1 feeding mixture that was administered to all six groups during the first ten days of the experiment was supplemented with soybean oil. BR2 and BR3 feeding mixtures used to feed chickens aged 11-42 days were fortified with soybean oil (SO Group), rapeseed oil (RO Group), sunflower oil (SFO Group), flaxseed oil (FO Group), olive oil (OO Group), and evening primrose oil (EPO Group). The vegetable oils used differed by the composition of fatty acids, particularly by the content of oleic acid, linoleic acid, α-linolenic acid. The use of the above-described experimental diets in young broilers from Day 11 to 42 had a significant effect on the content of fatty acids in the fat from breast and thigh muscles. The content of α-linolenic acid in breast and thigh muscles of broilers that received the feed containing flaxseed oil (21.16 g/100 g of oil and 17.13 g/100 g of oil, respectively) significantly increased (p ⪬ 0.01). The highest content of linoleic acid (p ⪬ 0.01) in breast and thigh muscles was found in chickens that were fed the feed containing primrose oil (59.13 g/100 g and 51.71 g/100 g). A significant increase (p ⪬ 0.01) in the level of oleic acid was detected in both breast and thigh muscles of broilers that received olive oil fortified feed (52.44 g/100 g and 43.70 g/100 g of oil). No significant variation was found in the content of palmitic acid and palmitooleic acid. The levels of oleic acid, linoleic acid and α-linolenic acid in feeding mixtures correlated with those found in breast and thigh muscles (r = 0.88; 0.94 and 0.99; r = 0.99; 0.98 and 0.99).

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