应美蓉 杜文凯 章 程 王 杰 李 燕.气相色谱法测定脂肪酸含量判定山茶油纯度[J].中国油脂,2020,45(1):132~136.[YING Meirong DU Wenkai ZHANG Cheng WANG Jie LI Yan.udgement of purity of oil-tea camellia seed oil by determining fatty acidcontent with gas chromatography[J].China Oils and Fats,2020,45(1):132~136.]
气相色谱法测定脂肪酸含量判定山茶油纯度
udgement of purity of oil-tea camellia seed oil by determining fatty acidcontent with gas chromatography
  
DOI:10.12166/j.zgyz.1003-7969/2020.01.028
中文关键词:  山茶油;掺伪;纯度;脂肪酸;气相色谱
英文关键词:oil-tea camellia seed oil; adulteration; purity; fatty acid; gas chromatography
基金项目:广西食品药品监督管理局(桂食药科2018-8(直属));食品安全地方标准制定(修订)项目(桂地标食2017006号)
作者单位
应美蓉 杜文凯 章 程 王 杰 李 燕 浙江省粮油产品质量检验中心,杭州 310012 
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中文摘要:
      利用气相色谱法,对山茶油掺入大豆油、菜籽油、玉米油和葵花籽油的掺伪油进行脂肪酸组成分析。结果表明:油酸、亚油酸和亚麻酸可作为鉴别山茶油中掺伪大豆油和菜籽油的特征脂肪酸,棕榈酸、油酸和亚油酸可作为鉴别山茶油中掺伪玉米油和葵花籽油的特征脂肪酸;回归预测模型相关系数(R2)较高(>0.99),可分别检出掺伪量4%的大豆油和菜籽油,掺伪量8%的玉米油和葵花籽油,回收率在96.56%~112.88%之间。该方法灵敏度高,定量准确,可为掺伪山茶油纯度鉴别及调和山茶油配比的定量分析提供科学依据。
英文摘要:
      The fatty acid composition of oil-tea camellia seed oil adulterated with soybean oil, rapeseed oil, corn oil or sunflower seed oil was analyzed by gas chromatography. The results showed that oleic acid, linoleic acid and linolenic acid could be used as the characteristic fatty acids in the identification of soybean oil and rapeseed oil, while palmitic acid, oleic acid and linoleic acid could be used as the characteristic fatty acids to identify corn oil and sunflower seed oil. The correlation coefficient of regression prediction model (R2) was higher (>0.99). The regression prediction model could be used to identify 4% of soybean oil or rapeseed oil as well as 8% of corn oil or sunflower seed oil, with recoveries ranging from 96.56% to 112.88%. The established method was sensitive and accurate, and could provide scientific basis for purity identification of blend oil-tea camellia seed oil and quantitative analysis of adulterated oil-tea camellia seed oil.
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