基于EDEM和RSM的红茶发酵机参数优化

doi:10.13305/j.cnki.jts.2023.05.004

Abstract

Abstract: Fermentation is a key process for the formation of black tea quality, and the fermentation conditions are the important factors affecting the degree of fermentation. In order to optimize the parameters of a self-designed roller fermentation machine, the extended distinct element method (EDEM) was used to simulate three distinct gradients of the rotational speed of the flexible scraper, and compare the degree of uniformity. With sensory score as evaluation index, response surface method (RSM) was applied for optimizing three key factors affecting fermentation quality (fermentation temperature, fermentation time, stirring interval). The results indicate that the uniformity of fermentation was the best at a rotation speed of 36(°)·s^-1. Based on this rotational speed, the order of importance of each factor on fermentation quality was: fermentation time, fermentation temperature, stirring interval. The optimal process parameters were as follows: fermentation time, 230βmin, fermentation temperature, 28.5β℃, and stirring interval, 20βmin.

Key words: black tea fermentation, technological parameter, response surface method, extended distinct element method

CLC Number:

LIU Limin, DONG Chunwang, LIN Shuhong, SHI Yali. Parameter Optimization of Black Tea Fermentation Machine Based on EDEM and RSM[J]. Journal of Tea Science, 2023, 43(5): 681-690.

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Parameter Optimization of Black Tea Fermentation Machine Based on EDEM and RSM

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