• Journal of the Korean Chemical Society
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• v.67 no.1
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• pp.28-32
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• 2023

The reaction conditions optimization, including the temperature of the reaction, amount of catalyst required, and reaction time for the linoleic acids (LAs) and conjugated linoleic acids (CLAs) production by catalytic dehydration of castor oil via saponification was investigated by response surface methodology (RSM). It was confirmed that all three parameters (temperature, time, and amount of catalyst) were influential factors in isolating LAs and CLAs. When the temperature was increased, the iodine value increased, and the reaction time and catalyst amount increased. The optimal reaction conditions were: 240 ℃, 2.2 h reaction time, and 7 wt% catalyst amount. The maximum iodine value reached 156.25 with 91.69% conversion to the essential fatty acids.

• Journal of the Korean Chemical Society
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• v.21 no.1
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• pp.67-72
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• 1977

Author studied on the isolation technique and properties of the products obtained by the reaction of soybean oil with maleic anhydride. Before studying above purpose, oleic acid and linoleic acid contained in soybean oil were reacted with maleic anhydride. Thin-layer chromatography using silica coated plate and solvent system consisting of petroleum ether-diethyl ether = 7:3∼5:5 (v/v) resulted in good effects on the isolation of maleic anhydride adducts. Four fractions were separated and fraction No. 2 were analyzed by IR & UV spectrophotometer, obtaining the following conclusions. In the case of oleic acid adduct and linoleic acid adduct, it were conjectured that the succinic acid type adduct was formed. In the case of conjugated $C_{18}$ fatty acid adduct, cyclohexene type adduct was formed which differed from oleic acid and linoleic acid adduct.

• Animal Bioscience
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• v.34 no.1
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• pp.66-73
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• 2021

Objective: Soy sauce oil, a byproduct of whole soybean processing by the soy sauce industry, was evaluated as a source of linoleic acid for dairy cows for the purpose of manipulating the composition of milk. Methods: Eight dairy Holstein cows fitted with rumen cannulas were used for ruminal administration of soy sauce oil for a 28-day period using a 4×4 Latin square study design with 4 doses (0, 200, 400, and 600 g soy sauce oil/d). Results: Although dry matter intake and milk yield were not affected by soy sauce oil administration, ruminal concentrations of total volatile fatty acids and acetate were decreased, specifically at 600 g/d administration. While milk fat percentage was decreased with administration of soy sauce oil, proportions of linoleic, vaccenic and conjugated linoleic acids in the rumen, blood and milk were increased with increasing soy sauce oil dose. Conclusion: These results suggest that soy sauce oil feeding could be useful for improving milk functionality without adverse effects on animal production performance when fed at less than 400 g/d.

• Proceedings of the Korean Society of Food Science and Nutrition Conference
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• 2004.11a
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• pp.61-64
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• 2004

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 1997.06a
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• pp.98-98
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• 1997

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 1998.10a
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• pp.157-157
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• 1998

• Proceedings of the Korean Society of Food Hygiene and Safety Conference
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• 2001.10a
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• pp.141-144
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• 2001

• Proceedings of the Korean Nutrition Society Conference
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• 2003.10a
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• pp.142-142
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• 2003

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2001.11a
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• pp.143-143
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• 2001

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2000.10a
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• pp.217-218
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• 2000

최근 발암물질 등에 노출되었을 때 이들이 야기하는 발암성을 경감시킬 수 있는 항암제에 대한 연구에 많은 관심을 모으고 있다. 식물로부터 많은 항암제가 분리 동정되었으나, 이들 항암제는 미량으로 존재하면서 상당한 독성을 가지므로 이들을 산업화시키는데는 많은 문제점을 가지고 있다. 그러나 유제품으로부터 항암물질을 분리 및 동정하였다(Ha et al., 1987). (중략)