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投稿时间:2020-08-30
投稿时间:2020-08-30
中文摘要: 建立测定白酒中γ-氨基丁酸(γ-aminobutyric acid,GABA)和核苷类物质(腺苷、尿苷)的高效液相色谱分析方法。确定检测γ-氨基丁酸的色谱条件为流动相A∶B(A-乙腈;B-50 mmol/L三水合乙酸钠)=35∶65(体积比),流速为1.0mL/min,柱温40℃,检测波长为436nm;确定检测核苷类物质的色谱条件为:流动相10%甲醇,流速为0.8 mL/min,柱温40℃,检测波长为254 nm。对20种白酒分析结果显示,不同香型白酒中功能成分差异明显。GABA在浓香型白酒中较高,其中2号酒样中GABA含量达0.867 mg/L。核苷类物质在芝麻香型和酱香型白酒中要高于浓香型,其中9号达到438.960 mg/L。该方法用于白酒中GABA和核苷类物质的分析具有分离效果佳、精密度高、稳定性高的特点。
Abstract:The high performance liquid chromatography (HPLC)were established for the determination of γaminobutyric acid(GABA)and nucleosides(adenosine and uridine).The conditions of GABA were as follows:mobile phase were acetonitrile and 50 mmol/L sodium acetate trihydrate(35 ∶65,volume ratio)at a flow rate of 1.0 mL/min,40℃ and a detection wavelength of 436 nm.The mobile phase for the determination of the nucleoside substances was 10% methanol at a flow rate of 0.8 mL/min,and the column temperature was 40℃with the detection wavelength of 254 nm.The analyses result of twenty liquor showed that GABA was higher in strong-flavor liquor and detected up to 0.867 mg/L in the sample of 2.The content of nucleoside substances were higher in sesame-flavor liquor and Maotai-flavor liquor than strong-flavor liquor,and the sample 9 showed the highest content (with 438.960 mg/L).The methods were applied to the analysis of GABA and nucleoside substances in liquor with desirable separation,precision and stability.
keywords: high performance liquid chromatography Chinese liquor γ-aminobutyric acid nucleosides detection
文章编号:202101026 中图分类号: 文献标志码:
基金项目:国家自然科学基金项目(31471724);天津市应用基础与前沿技术研究计划重点项目(14JCZDJC32900)
作者 | 单位 |
郭莹,李景辉,李霄霄,李研科,王国明,尹翠娟,张翠英 | 省部共建食品营养与安全国家重点实验室,工业发酵微生物教育部重点实验室,天津市工业微生物重点实验室,天津科技大学生物工程学院,天津 300457;河北山庄老酒股份有限公司,河北 承德 067500 |
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