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中国精品科技期刊2020
何婷,吴其妹,向丽萍,等. 凤冈锌硒茶挥发性成分提取及其香气成分分析[J]. 食品工业科技,2023,44(18):342−351. doi: 10.13386/j.issn1002-0306.2022100238.
引用本文: 何婷,吴其妹,向丽萍,等. 凤冈锌硒茶挥发性成分提取及其香气成分分析[J]. 食品工业科技,2023,44(18):342−351. doi: 10.13386/j.issn1002-0306.2022100238.
HE Ting, WU Qimei, XIANG Liping, et al. Extraction of Volatile Compounds and Analysis of Aroma Characteristics in Fenggang Zinc-Selenium Tea[J]. Science and Technology of Food Industry, 2023, 44(18): 342−351. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2022100238.
Citation: HE Ting, WU Qimei, XIANG Liping, et al. Extraction of Volatile Compounds and Analysis of Aroma Characteristics in Fenggang Zinc-Selenium Tea[J]. Science and Technology of Food Industry, 2023, 44(18): 342−351. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2022100238.

凤冈锌硒茶挥发性成分提取及其香气成分分析

Extraction of Volatile Compounds and Analysis of Aroma Characteristics in Fenggang Zinc-Selenium Tea

  • 摘要: 为探究凤冈锌硒茶加工过程中挥发性成分变化。采用顶空固相微萃取结合气相色谱-质谱联用技术对凤冈锌硒茶加工过程中挥发性组分进行检测,优化提取条件,利用主成分分析和正交偏最小二乘法回归分析,对凤冈锌硒茶加工过程中的挥发性组分进行判定、区分和筛选。结果表明,提取工艺采用茶水比为1:6(g/mL),通过50/30 μm CAR/DVB/PDMS固相微萃取针在90 ℃条件下萃取70 min为佳。GC-MS共鉴定出91种挥发性成分,共有挥发性组分37种,醇类、酮类、酯类和醛类是构成凤冈锌硒茶香气的主要挥发性组分,其中醇类物质最丰富,含量最高。主成分分析可将凤冈锌硒茶加工前分为一类,加工后分为一类;正交偏最小二乘法回归分析表明15种挥发性组分对凤冈锌硒茶气味贡献较大。茉莉酮、(S)-氧化芳樟醇、α-紫罗酮、水杨酸甲酯、甲基庚烯酮、(E)-氧化芳樟醇、雪松醇、β-环柠檬醛、2,2,6-三甲基-6-乙烯基四氢-2H-呋喃-3-醇、乙酰水杨酸甲酯等香气物质对构成凤冈锌硒茶特征香气品质具有重要作用。该研究可为凤冈锌硒茶的生产加工、质量控制提供理论依据。

     

    Abstract: In order to explore the variation of volatile components of Fenggang zinc-selenium tea during the production process. The combination of headspace solid phase microextraction (HS-SPME) with gas chromatography-mass spectrometry (GC-MS) was applied to detecte volatile components of Fenggang zinc-selenium tea during the production process, and optimize the extracting conditions. Principal component analysis and orthogonal partial least squares discriminant analysis were used to determine, distinguish and screen the volatile components of Fenggang zinc-selenium tea during the production process. The results showed that the best extraction process was as follows: Ratio of raw material to water was 1:6 (g/mL), extraction fiber 50/30 μm CAR/DVB/PDMS, extraction temperature at 90 ℃, extraction time for 70 min. A total of 91 volatile substances were identified by GC-MS that there were 37 kinds of common characteristic volatile components in the Fenggang zinc-selenium tea during the production process. Alcohols, ketones, esters and aldehydes were the main volatile components constituting the aroma of Fenggang zinc-selenium tea, among which alcohols were the most abundant and the highest content. Fenggang zinc-selenium tea could be divided into one category before processing and one category after processing by principal component analysis, and orthogonal partial least squares discriminant analysis showed that 15 volatile components contributed significantly to the odor of Fenggang zinc-selenium tea. Jasmonone, (S)-oxidized linalool, α-ionone, methyl salicylate, methyl heptenone, (E)-oxidized linalool, cedarol, β-cyclic citral, 2-pyrrol 6-trimethyl-6-vinyl tetrahydro-2H-furan-3-ol and methyl acetylsalicylate played an important role in the characteristic aroma quality of Fenggang zinc-selenium tea. This study can provide a theoretical basis for the production, processing, quality control of Fenggang zinc-selenium tea.

     

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