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Quality Test of the Sweet-and-Sour Porks and Deep-Frying Oil from the Chinese Restaurants in Seoul  

Kim, Hyo-Jin (Dept. of Food Science and Technology, Chungnam National University)
Xue, Chenglian (Dept. of Food Science and Technology, Chungnam National University)
Lee, Ki-Teak (Dept. of Food Science and Technology, Chungnam National University)
Publication Information
Journal of the East Asian Society of Dietary Life / v.20, no.4, 2010 , pp. 536-542 More about this Journal
Abstract
In this study, we determined the fat content, total fatty acid composition, trans fatty acid (tFA) content, and acid value of twenty samples of sweet-and-sour pork and fifteen samples of used frying oils collected from Chinese restaurants in Seoul. After the extraction of crude fat by the Folch method, the total fat content of the twenty sweet-and-sour porks ranged from 9.93 to 20.04%. The total unsaturated fatty acid content ranged from 50.05 to 81.22%, which mostly consisted of oleic and linoleic acid, while those of total saturated fatty acids were 18.06~49.26%. The tFA content of all of the twenty sweet-and-sour porks tested was less than 0.24 g per 100 g of food. The acid values of the fat extracted from the twenty sweet-and-sour porks ranged from 0.44 to 4.37. In the used frying oils, the ranges of the major compositional fatty acids were as follows: palmitic acid, 4.47~20.28%; oleic acid, 23.43~77.45%; linoleic acid, 5.6~53.06%; stearic acid, 1.81~7.38%. The tFA content in all of the fifteen used frying oils was less than 0.98 g per 100 g of fat, while the acid values of the fifteen used frying oils ranged from 0.27 to 2.41.
Keywords
Fat content; fatty acid composition; trans fatty acid; acid value;
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Times Cited By KSCI : 4  (Citation Analysis)
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