Tannase application in secondary enzymatic processing of inferior Tieguanyin oolong tea
Electron. j. biotechnol
;
28: 87-94, July. 2017. tab, graf
Artigo
em Inglês
| LILACS
| ID: biblio-1015957
ABSTRACT
Background:
Inferior Tieguanyin oolong tea leaves were treated with tannase. The content and bioactivity of catechins in extracts from the treated tea leaves were investigated to assess the improvement in the quality of inferior Tieguanyin oolong tea.Results:
Analysis showed that after treatment, the esterified catechin content decreased by 23.5%, whereas non-galloylated catechin and gallic acid contents increased by 15.3% and 182%, respectively. The extracts from tannase-treated tea leaves showed reduced ability to bind to BSA and decreased tea cream levels. The extracts also exhibited increased antioxidant ability to scavenge OH and DPPH radicals, increased ferric reducing power, and decreased inhibitory effects on pancreatic α-amylase and lipase activities.Conclusions:
These results suggested that tannase treatment could improve the quality of inferior Tieguanyin oolong tea leaves.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Chá
/
Hidrolases de Éster Carboxílico
Idioma:
Inglês
Revista:
Electron. j. biotechnol
Assunto da revista:
Biotecnologia
Ano de publicação:
2017
Tipo de documento:
Artigo
/
Documento de projeto
País de afiliação:
China
Instituição/País de afiliação:
Jimei University/CN
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