The Evolution of Dominant Microbial Populations in the Guangdong Chenxiang Tea during Pile-Fermentation Process
Guangdong Chenxiang Tea is a special black tea of Guangdong province. The dominant microbial populations in the Guangdong Chenxiang Tea were studied. The results showed Aspergillus niger, A. Gloucus, Fenicillium chrysogenum, Candida parapsilosis, Rhizopus sp. And Trichoderma sp. Were the dominant fungi species during pile-fermentation process. P. Chrysogenum accounted for 47.9%~91.9% of the total number of fungi colonies in the beginning of pile-fermentation, but A. Niger grew rapidly and become the absolutely dominant species and accounting for 83.1%~ 97.9% in the late period of fermentation process. The water content had a significant effection on the evolution of microbial populations, reasonably high levels (30%~35%) of moisture promoted the growth and reproduction of A. Niger and Candida parapsilosis, so the microbial populations can be controlled by control of water content so as to improve quality of Chenxiang tea.
NETL
NSTL
万方数据
维普
