摘要
目的建立一种快速、准确测定月饼中脱氢乙酸含量的气相色谱法,并应用于昆明市中秋月饼中脱氢乙酸含量专项监测工作中。方法样品经酸化后,用乙醚提取,浓缩后,用丙酮溶解残渣并定容,用气相色谱-FID测定,色谱柱为HP-5石英毛细管柱(30m×0.25mm×0.25μm)。结果脱氢乙酸在10～500μg/ml的范围,峰面积与浓度呈良好的线性关系。加标回收率为85.3%～99.8%。精密度3.13%～4.73%。结论本方法快速、准确、分析成本低,能满足月饼中脱氢乙酸含量的快速分析。
Objective To establish a gas chromatographic method for detecting dehydroacetic acid in moon cake. Method After samples being acidified,dehydroacetic acid was extracted with ether and detected by gas chromatography with HP-5 capillary column. Results The relative standard deviations （RSD） were 3. 13%-4. 73% ,the recovery rates were 85. 3%-99. 8% ,and the correlation coefficient was 0. 9999. Conclusion The method is simple,rapid and accurate for the detection of dehydroacetic acid in moon cake.
出处
《中国食品卫生杂志》
北大核心
2010年第2期133-135,共3页
Chinese Journal of Food Hygiene
关键词
气相色谱
脱氢乙酸
月饼
Gas Chromatography
Dehydroacetic Acid
Moon Cake
