正丁醇常数法快速测定煎炸油脂中羰基价
目的 利用正丁醇常数法快速测定煎炸油脂中羰基价。方法 采用正丁醇为提取溶剂对煎炸油脂进行羰基价测定, 用比色法测得吸光度值, 通过吸光度常数直接算出羰基价。结果 正丁醇常数法比现有国标方法更安全、简便, 方法添加回收率为88%~127%, 相对标准偏差为1.92%~9.82%。结论 该法快速、简便、精密度和准确度高, 适用于煎炸油脂中羰基价的测定。
Objective To determine carbonyl value in frying oils quickly and safely. Method A 1-butanol constant method was developed, 1-butanol was used as solvent to replace benzene, converted colorimetric absorbance into carbonyl value directly by measuring constant formula. Results The recovery rates of carbonyl compound were 88% to 127%, and the relative standard deviation were 1.92% to 9.82%. Conclu-sion Compared with the national standard method, this method which is suitable for the determination of carbonyl value in frying oils, is rapid, simple, precise and accurate.
标题:正丁醇常数法快速测定煎炸油脂中羰基价
英文标题:Rapid determination of carbonyl value in frying oils by 1-butanol constant method
作者:
韩瑞阳 深圳出入境检验检疫局食品检验检疫技术中心深圳市食品安全检测技术研发重点实验室
蓝芳 深圳出入境检验检疫局食品检验检疫技术中心深圳市食品安全检测技术研发重点实验室
梁宏 深圳出入境检验检疫局食品检验检疫技术中心深圳市食品安全检测技术研发重点实验室
刘利 湖北省粮油食品质量监测站
蔡琳 深圳市计量质量检测研究院
侯乐锡 深圳出入境检验检疫局食品检验检疫技术中心深圳市食品安全检测技术研发重点实验室
中文关键词:常数换算,正丁醇,羰基价,煎炸油,
英文关键词:conversion constant,1-butanol,carbonyl value,frying oils,
发表日期:2014-10-08
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