FOOD SCIENCE ›› 0, Vol. ›› Issue (): 44-246.

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Mutagenesis and Breeding of Fermentation Strains about Cold Water Infused Tea

 YANG  Jian, SUN  Yong-Kang, PAN  Ke   

  1. College of Food Science, Southwest University, Chongqing 400716, China

Abstract: A cellulase-decomposing bacterium SW3 was screened out from tea, and mutagenized with UV and NaNO2. The first isolation was conducted according to the method of distinct zone of clearing in cellulase-congo red agar medium. The second isolation was conducted according to the test of filter paper enzyme activity through liquid fermentation. SW355 is 62.9% higher than the original strain SW3, and it has a stable property in transmissibility.

Key words: cellulase, mutation, UV, NaNO2