引用本文:周世龙,罗世龙,赵冬旺,武 寅.气相色谱法测定动植物油脂中甾醇方法的改进[J].粮油食品科技,2019,27(5):65-68.
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气相色谱法测定动植物油脂中甾醇方法的改进
周世龙, 罗世龙, 赵冬旺, 武 寅
中储粮镇江粮油质量检测中心有限公司,江苏 镇江 212000
摘要:
在国标方法GB/T 25223—2010的基础上,对气相色谱法测定动植物油脂中甾醇的方法进行了改进,修改了中性氧化铝柱的制备过程,将硅胶中甾醇洗提所用溶剂改为丙酮,衍生化试剂改为99%N,O-双(三甲基硅)三氟乙酰胺+1%三甲基氯硅烷。结果表明:改进后的方法比国标方法易操作,气相色谱检测响应值大、成本低,但检测过程比较耗时。
关键词:  甾醇  气相色谱法  检测  改进
DOI:
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基金项目:
Improvement of determination of sterols in vegetable oils by gas chromatography
Abstract:
On the basis of national standard method GB/T25223—2010, the method of determining sterols in animal and vegetable oils and fats by gas chromatography was improved and the preparation process of neutral aluminum oxide column was modified. The solvent used for washing sterol in silica gel was replaced by acetone, the derivatization reagent was replaced by 99% BSTFA+ 1% TMCS. The results showed that: The improved method was easier to operate than the national standard method, with high response value and low cost, but longer time.
Key words:  sterol  gas chromatography  detect  improvement