Screening and Identification of Strains with Tea Polyphenols Conversion Activity in Pu-erh Tea Samples

doi:10.3969/j.issn.1673-1689.2014.07.015

Home > Archive>Volume 33, Issue 7, 2014 >762-766. DOI:10.3969/j.issn.1673-1689.2014.07.015

Screening and Identification of Strains with Tea Polyphenols Conversion Activity in Pu-erh Tea Samples
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                        10.3969/j.issn.1673-1689.2014.07.015
                    
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Pu-erh tea is a kind of tea which uses sun dried green tea as its raw material and processed with a unique technology. Microbial fermentation plays a key role in the formation of Pu-erh tea quality. To improve the quality of Pu-erh tea and reduce fermentation time, some microbes with tea polyphenols conversion activity were isolated and identified from Pu-erh tea samples. After several rounds of screening, three strains with high ability of conversion tea polyphenols to theabrownin were obtained. After the three strains were inoculated to Pu-erh tea solid fermentation, the conversion process of tea polyphenols to tea pigments was obviously stimulated. Meanwhile, the ratio of three pigments have become better. The results of molecular identification showed that these three strains were Aspergillus niger, Candida blankii and Aspergillus awamori, respectively.

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FENG Lingran, WANG Qiang, LUO Wei, YU Xiaobin. Screening and Identification of Strains with Tea Polyphenols Conversion Activity in Pu-erh Tea Samples[J]. Journal of Food Science and Biotechnology,2014,33(7):762-766.

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Online: October 19,2014
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