Effects of pH on the rates of lipid oxidation in oil-water system

被引:22
|
作者
Kim, Ji Young [1 ]
Yi, Bora [1 ]
Lee, Chankyu [1 ]
Gim, Seo-Yeong [1 ]
Kim, Mi-Ja [2 ]
Lee, JaeHwan [1 ]
机构
[1] Sungkyunkwan Univ, Dept Food Sci & Biotechnol, 2066 Seobu Ro, Suwon 16419, Gyeonggi Do, South Korea
[2] Kangwon Natl Univ, Dept Food & Nutr, Samcheok, South Korea
基金
新加坡国家研究基金会;
关键词
pH; Oil-water model system; Oxidative stability; Buffer; Non-buffer; BULK OILS; EMULSIFIER TYPE; IMPACT; IRON; STABILITY; SURFACTANT; EMULSIONS; MOISTURE; ACIDS;
D O I
10.1007/s13765-015-0146-3
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
The effect of pH on the oxidative stability in oil-water systems was determined at 40 degrees C for 18 days by monitoring headspace oxygen depletion and concentration of conjugated dienoic acids (CDAs). Two types of pH solutions were prepared: a buffer solution and a mixture of NaOH and HCl. When the pH of the mixture of NaOH and HCl increased from 1 to 13, the oxidative stability in oil decreased significantly in the order of pH 1 > 10 > 7 > 4 > 13. In case of the buffer solution, the oxidative stabilities of oils were in the order of pH 4 = 7 > 10. Depending on the pH and buffering capacities, oxidative stability of oils were greatly influenced.
引用
收藏
页码:157 / 161
页数:5
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