食品科学

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应用液-液萃取结合GC-MS与GC-NPD技术对国井芝麻香型白酒中含氮化合物的分析

王柏文1,2,李贺贺1,2,张锋国3,信春晖3,孙金沅1,2,*,黄明泉1,2,孙宝国1,2   

  1. 1.北京工商大学 北京市食品风味化学重点实验室,北京 100048;2.北京工商大学 食品质量与安全北京实验室,
    北京 100048;3.山东扳倒井集团技术中心,山东 高青 256300
  • 出版日期:2014-05-25 发布日期:2014-05-29
  • 通讯作者: 孙金沅
  • 基金资助:

    国家自然科学基金青年科学基金项目(31301466);
    科研基地建设-科技创新平台-国家自然科学基金配套(市级)项目(19005418040);
    北京市新世纪百千万人才工程培养经费资助项目;“十二五”国家科技支撑计划项目(2011BAD23B01)

Analysis of Nitrogen-Containing Compounds of Guojing Sesame-flavour Liquor by Liquid-liquid Extraction Coupled with GC-MS and GC-NPD

WANG Bo-wen1,2, LI He-he1,2, ZHANG Feng-guo3, XIN Chun-hui3, SUN Jin-yuan1,2,*, HUANG Ming-quan1,2, SUN Bao-guo1,2   

  1. 1. Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, China;
    2. Beijing Laboratory for Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China;
    3. Technology Center of Bandaojing Co. Ltd., Gaoqing 256300, China
  • Online:2014-05-25 Published:2014-05-29
  • Contact: SUN Jin-yuan

摘要:

应用液-液萃取结合气相色谱-质谱(gas chromatography-mass spectrometry,GC-MS)与气相色谱-氮磷检测器(GC-nitrogen phosphorus detector,GC-NPD)技术对国井芝麻香型白酒中含氮化合物进行分析,实验中以模拟酒样为研究对象确定分析的较优条件:用4 mol/L的盐酸溶液将酒样H+浓度调至1 mol/L,浓缩后用新重蒸的乙醚萃取出酸、中性组分,再将水相pH值调至9,用新重蒸的乙醚萃取出碱性组分,浓缩后进行GC-MS与GC-NPD分析。结果表明,采用液-液萃取结合GC-MS与GC-NPD方法,从国井芝麻香型白酒中共检测出31 种含氮化合物,其中23 种通过标准品比对进行准确定性,确证为吡嗪类化合物14 种 、吡咯类化合物1 种、吡啶类化合物4 种、噻唑类化合物1 种、噁唑类化合物1 种,其他类化合物2 种。

关键词: 液-液萃取, 气相色谱-质谱, 气相色谱-氮磷检测器, 芝麻香型白酒, 含氮化合物

Abstract:

In the present study, the nitrogen-containing compounds of Guojing sesame-flavor liquor were analyzed by liquidliquid
extraction coupled with gas chromatography-mass spectrometry (GC-MS) and GC-nitrogen phosphorus detection (GC-NPD).
Using a simulated liquor sample, the optimum experimental conditions were determined as follows: the sample was adjusted
with 4 mol/L HCl to a H+ concentration of 1 mol/L, concentrated, and extracted with freshly distilled diethyl ether to remove
acidic and neutral components; the aqueous phase was adjusted to pH 9 and its alkaline components were extracted into freshly
distilled diethyl ether. After concentration, the analysis by GC-MS and GC-NPD was carried out. A total of 31 nitrogen-containing
compounds were detected in Guojing sesame-flavor liquor, of which, 23 compounds were identified by comparing them with
authentic standards, including 14 pyrazines, 1 pyrrole, 4 pyridines, 1 thiazole, 1 oxazole and 2 other compounds.

Key words: liquid-liquid extraction, gas chromatography-mass spectrometry (GC-MS), gas chromatography-nitrogen phosphorus detector (GC-NPD), sesame-flavor liquor, nitrogen-containing compounds

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