Flora Diversity And Fermentation Process Codition Of Fuzhuan Brick-tea In Hunan Area

Fuzhuan brick-tea is a tea after fermentation, the microbes plays a vital role in the formation process of Fuzhuan brick-tea quality.In order to make full use of resources of microbial, improve the yield and quality of Fuzhuan brick-tea, this paper has made a systematic research in microbial diversity with different varieties and different process of Fuzhuan brick-tea. And we have improve the process of Fuzhuan brick-tea production from the view of fermentation. The main research results are as follows:1. Research of the dynamic change in Fuzhuan brick-tea process. Testing and statistical process of tea samples of different types and number of microorganism, found microbial growth has two peak:a ward of the period, the main for microzyme, aspergillus, the mold, root mildew; The second is the late hair flower, to crown axon were scattered bacteria (Eurotiμm.cristatμm)primarily, content to5.0by gasoloid density was exceed105CFU/g, accounting for more than90%of the total amount of microorganisms.2. Research of the advantage of microorganisms in the different varities Fuzhuan brick-tea. Acquisition15different "the representative of the enterprise Fuzhuan brick-tea products, purification and identification of each sample advantage microorganisms. Appraisal result15advantage bacteria including eight strains at crown scattered capsule bacteria (Eurotium cristatum),3strains thank watts were scattered bacteria (Eurotium chevalieri), two strains of bacteria rib scattered sac (Eurotium costiforme),1La Ye strains were scattered bacteria (Eurotium herbariorum) and1strain Amsterdam were scattered bacteria (Eurotium amstelodami).3. Research of the optimization of the processing technology in Fuzhuan brick-tea. Take control of time, use wallman inoculum, prior to the method of Fuzhuan brick-tea processing process improvement. Conclusion for, moderate extends (6-8h) has time for tea of quality improved; Two inoculum are all effective improve Fuzhuan brick-tea hair flower rate, which spores levitation liquid inoculation effect is better. A synthetic kefir added (0.6%-0.8%) can obviously increase the particle size and number gold flower, natural culture can have a improved effort for the finished products in soup.4. The detection of the chemical composition in the process improvement product. Testing process improvement are more prominent characteristics of9groups in the sample of the main chemical compositions content. As the results show, it is known that the tea in the tea polyphenols, flavonoids, as well as the content of free amino acids which are with the improvement of the quality of hair flower and drop. Moderate extends (6-8h) ward pile of time can improve tea water extract content."Compared with ordinary Fuzhuan brick-tea, inoculation of hair flower Fuzhuan brick-tea more close to the "Chen components Fuzhuan brick-tea some. Add in tea culture can make more ester type catechin the microbial enzymes solution into simple catechin, this transformation can reduce the bitter taste of the new tea, promote the formation of Fuzhuan brick-tea quality.