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基于电子鼻和气相色谱-离子迁移谱分析河北地区不同品牌桃香醋挥发性化合物差异
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郭琳琳(1999-),女,硕士研究生,研究方向:农业资源开发与利用,E-mail:947304496@qq.com 通讯作者:李晓磊(1978-),女,博士,教授,研究方向:发酵食品和发酵风味,E-mail:xiaolei97@163.com

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吉林省发改委产业技术研究与开发项目(2024C016-1);吉林省科技厅中青年领军人才项目(20240601074RC)


Electronic Nose and GC-IMS-based Analysis of Differences in Volatile Compounds among Different Brands of Peach Balsamic Vinegar in Hebei Region
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    摘要:

    为明确河北主要桃香醋品牌的挥发性化合物种类以及区分它们之间化合物成分的差异,采用电子鼻和气相色谱-离子迁移谱技术对不同品牌桃香醋风味成分进行分析,并应用多元统计分析桃香醋的香气差异。结果表明,传感器对桃香醋挥发性成分中硫化物、芳香成分的响应较强,品牌B>品牌C>品牌A。迁移谱共检测出79种挥发性化合物,包括25种酯、12种醛、9种醇、8种酮、6种醚、6种吡嗪、3种酸、3种呋喃和7种其它化合物。迁移谱指纹图谱显示35种化合物为三种桃香醋共有的标志性化合物,其中乙酸乙酯、甜瓜醛贡献了水果甜味、紫丁香醇贡献了药香味。主成分分析验证了迁移谱数据能有效区分产品之间的差异,正交偏最小二乘判别分析模型以变量重要度投影VIP值>1为界限筛选并结合S-plot图得到25种差异挥发性化合物。产品的总酸、总糖含量无明显差异,感官评价总体接受度较高。该研究表明电子鼻和气相离子迁移谱技术可用于桃香醋的鉴别,进而为其品质评估提供参考。

    Abstract:

    To determine the types of volatile compounds in major peach balsamic vinegar brands in Hebei and distinguish the differences in their compound compositions, an electronic nose and gas chromatography-ion mobility spectrometry (GC-IMS) were used to analyze the characteristic flavor components of different brands of peach balsamic vinegar. The differences in aroma were also evaluated using multivariate statistical analysis. The results showed that the sensors responded more strongly to the sulfide and aromatic compounds of the volatile components of peach balsamic vinegar in the order of brand B>brand C>brand A. GC-IMS identified 79 volatile compounds, including 25 esters, 12 aldehydes, nine alcohols, eight ketones, six ethers, six pyrazines, three acids, three furans, and seven compounds of other types. The GC-IMS fingerprint also revealed 35 marker compounds shared by the three types of peach balsamic vinegar, with ethyl acetate and 2,6-dimethyl-5-heptenal (melonal) contributing to the fruity sweetness, and 2,6-dimethoxyphenol (syringol) contributing to the medicinal aroma of the vinegars. Principal component analysis validated effective discrimination between products using GC-IMS spectral data. Using an orthogonal partial least squares discriminant analysis model, 25 differential volatile compounds were identified by screening variables with a variable importance in projection value>1, followed by combined analysis with an S-plot. Total acids and sugars did not significantly differ among the products, and the overall acceptability in sensory evaluation was high for all three brands. The results of the present study demonstrated the utility of the electronic nose and GC-IMS in discriminating peach balsamic vinegars, providing a reference for quality assessment.

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郭琳琳,徐美丽,张馨月,李羽嘉,王莞欣,马福敏,段翠翠,马艳丽,李丹,李晓磊.基于电子鼻和气相色谱-离子迁移谱分析河北地区不同品牌桃香醋挥发性化合物差异[J].现代食品科技,2026,42(2):278-292.

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  • 收稿日期:2024-11-11
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  • 在线发布日期: 2026-03-19
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