晒青茶灭菌方法研究

安江珊; 王利妍; 刘琨毅; 吕伟; 李崇萍; 李红叶; 赵明

doi:10.12187/2022.01.006

March 2022

Article Contents

AN Jiangshan, WANG Liyan, LIU Kunyi, et al. Study of sterilization methods for sun-dried green tea[J]. Journal of Light Industry, 2022, 37(1): 40-45. doi: 10.12187/2022.01.006

Citation: AN Jiangshan, WANG Liyan, LIU Kunyi, et al. Study of sterilization methods for sun-dried green tea[J]. Journal of Light Industry, 2022, 37(1): 40-45. doi: 10.12187/2022.01.006 shu

Study of sterilization methods for sun-dried green tea

AN Jiangshan ¹ ,
WANG Liyan ¹ ,
LIU Kunyi ^1,2 ,
LYU Wei ¹ ,
LI Chongping ¹ ,
LI Hongye ¹ ,
ZHAO Ming ¹

1. College of Tea, Yunnan Agricultural University, Kunming 650201, China;
2. College of Wuliangye Technology and Food Engineering, Yibin Vocational and Technical College, Yibin 644003, China

Received Date: 2021-03-25

Abstract

In order to screen out the appropriate sterilization method for sun-dried green tea, six sterilization methods including irradiation sterilization, ultraviolet sterilization, microwave sterilization, high-pressure steam sterilization, pasteurization and ozone sterilization were used to treat sun-dried green tea, then total viable counts, biochemical composition and sensory evaluation of sun-dried green tea after sterilization were determined. The results showed that microorganisms in tea leaves were sterilized fully by methods of high-pressure steam sterilization and irradiation sterilization, 7.5 kGy irradiation sterilization had the least effect on the biochemical compositions of tea, only the contents of soluble sugar, catechin, flagellin, rutin and luteolin changing significantly (P<0.05). Meanwhile, sensory evaluation also confirmed that 7.5 kGy irradiation sterilization had the least effect on sensory quality of sun-dried green tea. In conclusion, the best sterilization method of sun-dried green tea was 7.5 kGy irradiation sterilization.
- sterilization method,
- microorganism,
- biochemical composition,
- sensory evaluation
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Study of sterilization methods for sun-dried green tea

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