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食品研究与开发:2021,42(7):28-32
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不同升温方式下大红袍做青中PPO和β-G活性变化对比
(武夷学院茶与食品学院,福建武夷山354300)
Comparison of PPO and β-G Activity Changes in the Green-Making of Dahongpao under the Different Heating Methods
(College of Tea and Food Science,Wuyi University,Wuyishan 354300,Fujian,China)
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投稿时间:2020-06-03    
中文摘要: 以武夷山大红袍驻芽三四叶为鲜叶原料,采用武夷岩茶制作工艺,比较分析做青时采用炭火和暖气机组升温对青叶多酚氧化酶(polyphenol oxidase,PPO)活性和β-葡萄糖苷酶(β-glucosidase,β-G)活性变化的影响。结果表明:炭火做青间温度和CO2 浓度高于暖气机组做青间,两者的相对湿度区别不大;对比晒青叶,至做青结束时,两者的PPO 活性皆显著降低,炭火做青间大红袍PPO 活性减少了22.11%,暖气机组做青间大红袍PPO 活性减少了28.82%;而β-G 活性的变化不同,炭火做青间大红袍β-G 活性显著降低,减少37.20%,暖气机组做青间大红袍β-G 活性明显升高,增加了37.79%。
Abstract:Taking three or four leaves of the bud of Wuyishan Dahongpao as raw materials,used Wuyi rock tea production technology,the effects of charcoal fire and heating unit heating on the changes of polyphenol oxidase(PPO)activity and β-glucosidase(β-G)activity in green leaves were compared and analyzed in the process of green-making. The results showed that temperature and CO2 concentration of the green-making room heating with charcoal fire were higher than that of the heating unit,and the relative humidity of the two was not different.Contrasted the solar-withering leaves to the end of green-making,the PPO activity of both was significantly reduced,the polyphenol oxidase of Wuyi Dahongpao in the charcoal fire green-making room decreased by 22.11% and the polyphenol oxidase of Wuyi Dahongpao in the heating unit green-making room decreased by 28.82%. While the changes of β-G activity were different,the β-glucosidase of Wuyi Dahongpao in the charcoal fire was significantly reduced by 37.20%and the β-glucosidase of Wuyi Dahongpao in the heating unit was significantly increased by 37.79%.
文章编号:202107005     中图分类号:    文献标志码:
基金项目:福建省科技厅引导性项目(2018N0030);福建省科技厅科技创新平台项目(2018N2004);福建省科技厅对外合作产业化项目(2016I1008)
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