DETERMINATION OF CITRIC-ACID AND ITS DECOMPOSED PRODUCTS IN EDIBLE OILS BY GAS-LIQUID CHROMATOGRAPHY
DETERMINATION OF CITRIC-ACID AND ITS DECOMPOSED PRODUCTS IN EDIBLE OILS BY GAS-LIQUID CHROMATOGRAPHY
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DOI：
10.1007/bf02672439
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发表时间：
1977-01-01
影响因子：
2
通讯作者：
KOMODA, M
中科院分区：
文献类型：
--
作者：
MIYAKOSHI, K;KOMODA, M
建立了精制油脂中柠檬酸、乌头酸、柠檬酸和柠康acids.sbd.in 4种有机酸的气相色谱定量分析方法。用水从大豆油中提取有机酸后，将提取物用正丁醇酯化，并将等份酯在配备有火焰离子化检测器的程序升温10%DEGS柱上进行GLC。在20和30 ppm的水平，从油中的酸的回收率从95-100%不等，除了亚硝酸。日本食用油中柠檬酸含量从微量到16 ppm。未检出柠檬酸、衣康酸和柠康酸。
A quantitative GLC method for 4 organic acids.sbd.citric, aconitic, itaconic and citraconic acids.sbd.in refined oils and fats was developed. After the organic acids are extracted with water from soybean oils, the extract is esterified with n-butanol and an aliquot of the ester is subjected to GLC on a temperature-programmed 10% DEGS column equipped with a flame ionization detector. At 20 and 30 ppm levels, recoveries of the acids from the oil varied from 95-100% except for itaconic acid. Citric acid content in commerical edible oils in Japan was from trace to 16 ppm. Aconitic, itaconic and citraconic acids were not detected.