摘要
目的了解中国市售食用植物油中氯丙醇酯和缩水甘油酯的污染状况。方法采用同位素稀释-气相色谱-质谱联用法对2015—2017年全国市售1309份食用植物油样品中的总3-氯丙醇酯、2-氯丙醇酯和缩水甘油酯进行检测并对污染水平进行分析。结果植物油中3-氯丙醇酯检出率为81.83%,平均值为1.21 mg/kg。其中茶油中3-氯丙醇酯平均含量最高(4.71 mg/kg),其次是花生油(1.36 mg/kg)和菜籽油(1.12 mg/kg),最低的是葵花籽油(0.54 mg/kg);2-氯丙醇酯检出率为82.84%,平均值为0.39 mg/kg。其中花生油中2-氯丙醇酯的平均含量为0.40 mg/kg,显著高于调和油(0.30 mg/kg)和大豆油(0.25 mg/kg),与菜籽油平均含量(0.66 mg/kg)差异无统计学意义;缩水甘油酯超标率为19.90%,平均值为0.68 mg/kg。调和油中缩水甘油酯中的平均含量(0.78 mg/kg)显著高于花生油(0.54 mg/kg),其余品种平均含量之间差异无统计学意义。结论中国食用植物油普遍存在氯丙醇酯的污染,不同种类的食用植物油污染程度不同。
OBJECTIVE To investigate the occurrence data for fatty acid esters of chloropropanol and glycidyl in edible vegetable oils purchased in China.METHODSThe 1309 samples of edible vegetable oil were collected and the data of chloropropanol and glycidyl were detected by the gas chromatography-mass spectrometry from 2015 to 2017.RESULTS The detection rate of 3-monochloropropanediol esters in vegetable oils was 81.83%with the mean level of 1.21 mg/kg.The mean content of tea-seed oil was significantly higher than that of other varieties,followed by peanut oil(1.36 mg/kg),rapeseed oil(1.12 mg/kg).The sunflower seed oil has the lowest mean content(0.54 mg/kg).The detection rate of 2-monochloropropanediol esters in vegetable oils was 82.84%with the mean level of 0.39 mg/kg.The content of peanut oil was significantly higher than that of other varieties,followed by blended oil(0.30 mg/kg)and soybean oil(0.25 mg/kg).There was no significant difference with rapeseed oil(0.66 mg/kg).The exceeding rate of glycidyl ester was 19.90%with the mean level of 0.68 mg/kg.The average content of glycidyl ester in blended oil(0.78 mg/kg)was significantly higher than that in peanut oil(0.54 mg/kg).There was no significant difference among other varieties.CONCLUSION The pollution of chloropropanol esters is common in edible vegetable oils in China.The contamination is different in kinds of edible oils.
作者
刘卿
周萍萍
杨大进
Liu Qing;Zhou Pingping;Yang Dajin(China National Center for Food Safety Risk Assessment,Beijing 100022,China)
出处
《卫生研究》
CAS
CSCD
北大核心
2021年第1期75-78,共4页
Journal of Hygiene Research
基金
国家重点研发计划(No.2018YFC1603600)。
