title: Novel trends for use of microbial tannases.
abstract: Tannases, mainly produced by microorganisms, are able to hydrolyze gallotannins, ellagitannins, complex tannins, and gallic acid esters into gallic acid, ellagic acid, glucose, or alcohols, and also synthesize gallic acid esters using tannic acid or gallic acid with a variety of alcohols in nonaqueous media. Microbial tannases have been widely applied especially in beverage processing, pharmaceutics, and brewing. However, many factors, especially high production costs, severely limit the use of microbial tannases at the industrial level. In this minireview, we aim to provide an overview of the advances in applications of microbial tannases during the last 15 years, mainly including the following respects: hydrolysis of tea cream, modification of green tea catechins, production of gallic acid, debittering of fruit juices, degradation of tannery effluents, and synthesis of propyl gallate, trying to know the trends and prospects for the future in applications of microbial tannases.
authors.affiliation: a College of Food Science , South China Agricultural University , Guangzhou , China.
authors.forename: Shuai
authors.initials: S
authors.lastname: Zhang
authors.forename: Xiangyang
authors.initials: X
authors.lastname: Gao
authors.forename: Liping
authors.initials: L
authors.lastname: He
authors.forename: Yuanxin
authors.initials: Y
authors.lastname: Qiu
authors.forename: Huawei
authors.initials: H
authors.lastname: Zhu
authors.forename: Yong
authors.initials: Y
authors.lastname: Cao
mesh_terms: D001673:Biodegradation, Environmental; D002265:Carboxylic Ester Hydrolases / Q000378:metabolism*; D019649:Food Industry; D005707:Gallic Acid / Q000378:metabolism; D006868:Hydrolysis; D064307:Microbiota; D062065:Wastewater
chemical_list: D002265:Carboxylic Ester Hydrolases; D005707:Gallic Acid; D062065:Wastewater; C022711:tannase
keywords: applications; hydrolysis; production; synthesis; tannases