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中国精品科技期刊2020
叶秋萍,余雯,谢基雄,等. 不同干燥方式对茉莉花茶挥发性成分的影响[J]. 食品工业科技,2024,45(18):210−218. doi: 10.13386/j.issn1002-0306.2023090274.
引用本文: 叶秋萍,余雯,谢基雄,等. 不同干燥方式对茉莉花茶挥发性成分的影响[J]. 食品工业科技,2024,45(18):210−218. doi: 10.13386/j.issn1002-0306.2023090274.
YE Qiuping, YU Wen, XIE Jixiong, et al. Effects of Different Drying Methods on Volatile Components of Jasmine Tea[J]. Science and Technology of Food Industry, 2024, 45(18): 210−218. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2023090274.
Citation: YE Qiuping, YU Wen, XIE Jixiong, et al. Effects of Different Drying Methods on Volatile Components of Jasmine Tea[J]. Science and Technology of Food Industry, 2024, 45(18): 210−218. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2023090274.

不同干燥方式对茉莉花茶挥发性成分的影响

Effects of Different Drying Methods on Volatile Components of Jasmine Tea

  • 摘要: 为了研究不同干燥方式对茉莉花茶挥发成分的影响,本文采用顶空固相微萃取结合气相色谱-质谱联用(HS-SPME-GC-MS)的方法,结合电子鼻技术,对经过四种干燥方式包括热泵干燥、热风干燥、微波干燥和冷冻干燥等处理的茉莉花茶挥发组分进行定性、定量分析。结果表明,电子鼻传感器响应值排名前三的是W1W、W2W、W5S,在不同的干燥处理下,能较好地体现茉莉花茶的挥发性物质的差别。HS-SPME-GC-MS的分析结果显示,茉莉花茶在四种不同的干燥方式处理下,鉴定出包括烯烃类、醇类、酯类、醛类、酮类、其他类等96种挥发性组分,烯烃类种类最多可达37种。冷冻干燥的茉莉花茶挥发性成分含量的总量最高达到47.382 μg/g,其次是热泵干燥的44.429 μg/g,其中烯烃类和醇类成分含量较高。热泵干燥处理下茉莉花茶香气指数最高,达到4.766。因此,HS-SPME-GC-MS结合电子鼻技术可用于区分不同干燥方式下茉莉花茶品质的优劣,为茉莉花茶生产干燥方法选择提供理论参考。

     

    Abstract: To study the effect of different drying methods on volatile components of jasmine tea, headspace solid phase microextraction combined with gas chromatography-mass spectrometry and electronic nose technology were used for quantitative and qualitative analysis of the volatile compounds in jasmine tea dried by four methods, including heat pump drying, hot air drying, microwave drying and vacuum-freeze drying. The results showed that, the top three response values of electronic nose sensors were W1W, W2W and W5S. Under different drying treatments, it can better reflect the differences in volatile substances in jasmine tea. The results of HS-SPME-GC-MS showed that a total of 96 volatile components (alcohol esters, aldehydes, ketones, olefins and other classes) were identified in jasmine tea by four different drying methods. Among these components, the species of olefin compounds were the most with the amount of 37. The total amounts of the volatile components in jasmine tea by freeze-drying were the most abundant with a relative content of 47.382 μg/g, followed by heat pump drying with a relative content of 44.429 μg/g. And the relative contents of olefin and alcohols were higher than other components. The JTF (jasmine tea fragrance) index of jasmine tea was the highest with a amount of 4.766 by heat pump drying. Therefore, HS-SPME-GC-MS combined with electronic nose technology could be used to distinguish the quality of jasmine tea by different drying methods, and would provide theoretical reference for the selection of drying methods in jasmine tea production.

     

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