Studies on the physico-chemical characteristics of some vegetable oils during heating and frying

被引:0
|
作者
Narasimhamurthy, K [1 ]
Raina, PL [1 ]
机构
[1] Cent Food Technol Res Inst, Dept Biochem & Nutr, Mysore 570013, Karnataka, India
来源
关键词
fresh oil; heated oil; fried oil; physico-chemical characteristics;
D O I
暂无
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
Changes in the physico-chemical characteristics of oils during heating and frying were studied in respect of groundnut, sesame and coconut oils (heating at 180 degrees C for 72 h and frying under laboratory conditions). The results indicated relatively greater alterations in heated oils compared to fried oils. Peroxide value, thiobarbituric acid value, iodine value, conjugated dienoic acid and free fatty acids showed significant changes in heated oils compared to fried oils. The fatty acid analysis showed significant increases in the levels of 16:0, 18:0 and 18:1 and a decrease in the level of 18:2 in both heated and fried oils.
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收藏
页码:432 / 434
页数:3
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