GC-FID多内标法同时测定白酒中甲醇、酯类及其酸类含量  

Simultaneous Determination of the Contents of Methanol,Esters and Their Corresponding Acids in Baijiu by GC-FID Multi-internal Standard Method

作　　者：秦菊香 蔡霞 周小清 纪晨 胡慧 QIN Juxiang;CAI Xia;ZHOU Xiaoqing;JI Chen;HU Hui(Taizhou Institute for Food Inspection/Jiangsu Provincial Market Regulation Key Laboratory(Risk Identification and Key Analysis Technologies for Special Medical Food),Jiangsu Taizhou 225300,China)

机构地区：[1]泰州市食品检验院/江苏省市场监管重点实验室(特医食品风险识别及关键分析技术),江苏泰州225300

出　　处：《广州化工》2025年第6期106-108,116,共4页GuangZhou Chemical Industry

基　　金：江苏省市场监督管理局科技项目(KJ2024098)。

摘　　要：本研究基于氢火焰离子化检测器-气相色谱(GC-FID),通过优化国标检测方法,建立了多内标法同时测定不同香型白酒(浓香、清香、酱香、凤香、馥郁香和浓酱兼香型)中甲醇、酯类(乙酸乙酯、己酸乙酯和乳酸乙酯)和酸类(乙酸和己酸)含量的实验方法。结果表明,各待测组分均能实现有效分离,相关系数R~2均大于0.999,精密度试验结果RSD为0.88%~1.43%,加标回收率为95.0%~100.8%,检出限为0.15~2.40 mg/L,该方法极大提高了检测效率,有利于减少试剂消耗和保护能源,可用于对不同香型白酒中甲醇、乙酸乙酯、己酸乙酯、乳酸乙酯、乙酸和己酸含量定量分析。Based on Gas chromatography with a flame ionization detector(GC-FID),by optimizing the national standard detection method,an experimental method for quantifing of the contents of methanol,ethyl acetate,ethyl caproate,ethyl lactate,acetic acid and caproic acid in baijiu(Chinese liquor)of different aroma types using a multiinternal standard method simultaneously was established.The results showed that all components to be tested could be effectively separated.The correlation coefficients R2 were all greater than 0.999.The relative standard deviations(RSD)of the precision test results were between 0.88%to 1.43%,the spiked recoveries were between 95.0%to 100.8%,and the limits of detection were between 0.15 to 2.40 mg/L.This method greatly improves the detection efficiency,helped reduce reagent consumption and conserve energy,and can be used for the quantitative analysis of the contents of methanol,ethyl acetate,ethyl caproate,ethyl lactate,acetic acid and caproic acid in baijiu of different aroma types.

关 键 词：气相色谱 多内标 甲醇 酯类及其酸类 

分 类 号：TS207[轻工技术与工程—食品科学]