摘要
为了探索以己酸、己酸乙酯为主要风味物质的白酒中乙醇稳定碳同位素比值(δ^(13)C)、己酸δ^(13)C和己酸乙酯δ^(13)C的相关性,该研究基于白酒中乙醇+己酸■己酸乙酯+水的动态平衡反应,研究了白酒模拟物和白酒中乙醇δ^(13)C、己酸δ^(13)C及己酸乙酯δ^(13)C的相关性。结果表明,白酒模拟物中3者存在多元线性关系,线性关系公式(1)为:己酸乙酯δ^(13)C=乙醇δ^(13)C×0.260+己酸δ^(13)C×0.700-0.755,但其并不适用于分析白酒中3者的相关性。白酒中3者同样存在多元线性关系,线性关系公式(2)为:己酸乙酯δ^(13)C=乙醇δ^(13)C×0.109+己酸δ^(13)C×0.205-15.658,该公式相较于公式(1)标准偏差较小,能较好的展示白酒中乙醇δ^(13)C、己酸δ^(13)C及己酸乙酯δ^(13)C的关系,在白酒中具有一定的适用性,为稳定同位素技术在白酒外源添加方面的运用提供了技术支撑。
To explore the correlation among the stable carbon isotope ratio (δ^(13)C) of ethanol,hexanoic acid δ^(13)C and ethyl hexanoate δ^(13)C in Baijiu with hexanoic acid and ethyl hexanoate as the main flavor components,based on the dynamic equilibrium reaction:ethanol+hexanoic acid■ethyl hexanoate+water in Baijiu,the correlations among ethanol δ^(13)C,hexanoic acid δ^(13)C and ethyl hexanoateδ^(13)C in both Baijiu simulants and actual Baijiu samples were examined.The results showed that there was a multivariate linear relationship among the three components in the Baijiu simulants,and the linear relationship formula(1)was:ethyl hexanoate δ^(13)C=ethanol δ^(13)C×0.260+hexanoic acid δ^(13)C×0.700-0.755,but it was not suitable for analyzing the correlation of the three components in Baijiu.There also existed a multiple linear relationship in the three components in Baijiu,the linear relationship formula(2)was:ethyl hexanoate δ^(13)C=ethanol δ^(13)C×0.109+hexanoic acid δ^(13)C×0.205-15.658.Compared with formula(1),this formula had a smaller standard deviation and could better demonstrate the relationship among ethanol δ^(13)C,hexanoic acid δ^(13)C and ethyl hexanoate δ^(13)C in Baijiu.It had certain applicability in Baijiu,providing technical support for the application of stable isotope technology in the exogenous addition of Baijiu.
作者
张倩
谢正敏
郑佳
苏建
赵东
汪兴明
魏金萍
黄箭
叶华夏
薛润萍
李茂春
ZHANG Qian;XIE Zhengmin;ZHENG Jia;SU Jian;ZHAO Dong;WANG Xingming;WEI Jinping;HUANG Jian;YE Huaxia;XUE Runping;LI Maochun(Yibin Wuliangye Co.,Ltd.,Yibin 644000,China;Solid-state Fermentation Resource Utilization Key Laboratory ofSichuan Province,Yibin 644000,China;Key Laboratory of Wuliangye-flavor Liquor Solid-state Fermentation,China National Light Industry,Yibin 644000,China)
出处
《中国酿造》
北大核心
2025年第8期286-292,共7页
China Brewing
基金
宜宾五粮液股份有限公司项目(JSYJA2024011)。
