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食品研究与开发:2021,42(13):77-83
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萎凋工艺对福鼎白茶品质影响研究
(莆田学院环境与生物工程学院,福建莆田351100)
Effect of Withering Process on the Quality of Fuding White Tea
(College of Environmental and Biological Engineering,Putian University,Putian 351100,Fujian,China)
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投稿时间:2020-04-21    
中文摘要: 为探讨影响福鼎白茶品质的关键因素,明晰不同萎凋工艺对其品质形成的影响,该试验以新采摘的成熟度、叶片色泽、形状大小基本一致的新鲜嫩叶为试材,研究萎凋工艺对福鼎白茶关键化学成分和感官品质的影响。结果表明自然萎凋和加温萎凋过程中水分含量均显著降低,其中自然萎凋失水速率要低于加温萎凋;茶多酚占总干物质的含量明显下降,加温萎凋过程茶多酚含量损失相比于自然萎凋要高;氨基酸占总干物质的含量随着萎凋时间延长有不同程度的升高。对萎凋叶和成品白茶进行感官评价,发现自然萎凋时间60 h、加温萎凋时间36 h时,萎凋叶具有最佳的外形,成品白茶也具有最佳的感官品质,且自然萎凋的品质要高于加温萎凋。
中文关键词: 福鼎白茶  品质  萎凋  水分含量  感官评价
Abstract:This study aims to explore the key factors affecting the quality of Fuding white tea and clarify the effects of different withering processes on its quality.The freshly picked fresh leaves with basically the same maturity,leaf color and shape were used as materials.The influence of withering process on key chemical components contents and sensory quality of Fuding white tea were studied.The results showed that the moisture content of natural withering and heating withering decreased significantly.The rate of natural withering was lower than that of heating withering.The content of tea polyphenols in total dry matter showed a decline,and the loss of polyphenol content was higher than that of natural withering.The content of amino acids in the total dry matter increased with the withering time.When the natural withering time was 60 h and the heating withering time was 36 h,the withered leaf had the best shape and Fuding white tea also had the best sensory quality,and the quality of natural withered is higher than that of heating withering.
文章编号:202113012     中图分类号:    文献标志码:
基金项目:莆田市科技计划项目(2019NP002)
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