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• 成分分析 •    下一篇

不同海拔政和白茶品质差异分析

黄琳洁1,徐凯1,周承哲2,石碧滢2,田采云1,3,卢丽2,郭玉琼2   

  1. 1. 福建农林大学
    2. 福建农林大学园艺学院
    3.
  • 收稿日期:2022-09-30 修回日期:2023-04-06 出版日期:2023-08-25 发布日期:2023-09-01
  • 通讯作者: 郭玉琼 E-mail:guoyq828@163.com
  • 基金资助:
    福建农林大学“双一流”建设科技创新能力提升培育计划;福建农林大学“双一流”建设科技创新能力提升培育计划;福建农林大学乡村振兴茶产业技术服务项目;福建农林大学茶产业链科技创新与服务体系建设项目;福建省高原学科建设经费;福建农林大学协同创新院茶产业分院

Quality difference analysis of Zhenghe White tea at different altitudes

, , Cheng-Zhe ZHOU,Bi-Ying SHI, , ,   

  • Received:2022-09-30 Revised:2023-04-06 Online:2023-08-25 Published:2023-09-01

摘要: 以不同海拔茶树鲜叶及成品茶为材料,采用感官审评和生化成分测定,结合多元统计分析探究海拔高度对政和白茶品质的影响。感官审评结果表明:不同海拔政和白茶品质有显著差异,中、高海拔白茶滋味清鲜、醇爽,香气清纯,低海拔白茶滋味醇厚,花香显。偏最小二乘法判别分析结果表明,可溶性糖、咖啡碱、3-蒈烯、马鞭草烯醇、萜品油烯、顺-2-戊烯醇、2-乙基呋喃和顺-2-已烯-1-醇是区分不同海拔茶树鲜叶关键的差异成分,可溶性糖、游离氨基酸、萜品油烯、马鞭草烯醇、2-乙基呋喃、2-甲基丁醛、苯乙醇和3-蒈烯是区分不同海拔成品茶关键的差异成分,进一步结合香气 活度值分析,2-甲基丁醛、3-蒈烯和萜品油烯可作为鉴别不同海拔白茶的特征挥发性成分。本研究将为进一步探究不同海拔茶叶风味品质特征提供参考依据。

关键词: 白茶, 鲜叶, 海拔, 滋味, 香气

Abstract: The effects of altitude on the quality of Zhenghe white tea were investigated by biochemical composition determination and sensory evaluation combined with multivariate statistical analysis, using fresh leaves and finished tea at different altitudes as materials. The results of sensory evaluation showed that there were significant differences in the quality of political and white tea at different altitudes. White tea at middle and high altitudes tasted fresh, mellow and fragrant, while white tea at low altitudes tasted mellow and fragrant. The biochemical components and volatile components of fresh leaves and finished tea at different altitudes can be distinguished by principal component analysis. The variable projection value of partial least squares discriminant analysis shows that, Soluble sugars, caffeine, 3-carene, verbenenol, terpene oleene, cis-2-pentenol, 2-ethylfuran and cis-2-hexene-1-alcohol were the key components to distinguish fresh leaves of tea plants at different altitudes. Oil soluble sugar, free amino acid, terpene ene, verbena enol, 2 - ethyl furan, 2 - and 3 - methyl butyl aldehyde, benzene ethanol carene differences is the key to distinguish the different altitude and white tea ingredients, further combining with aroma activity value analysis, 2 - methyl butyl aldehyde, 3 - carene and olefinic terpine oil can be used as identification of different elevation of white tea characteristics of volatile compositions. This study will provide reference for further exploring the improvement of tea flavor quality at different altitudes.

Key words: White tea, fresh leaves, altitude, taste, fragrance

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