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Literature summary for 3.1.1.20 extracted from

  • Lu, M.; Chen, C.
    Enzymatic tannase treatment of green tea increases in vitro inhibitory activity against N-nitrosation of dimethylamine (2007), Process Biochem., 42, 1285-1290.
No PubMed abstract available
Search for more literature for 3.1.1.20

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
additional information Aspergillus ficuum tannase-treated green tea leaf extract shows increased inhibition activity on N-nitrosamine formation of secondary amines due to increased catechin levels compared to untreated leaf extract, the inhibitory effect is also higher as with ascorbic acid, overview ?
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 ?

Organism

Organism UniProt Comment Textmining
Aspergillus ficuum
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
commercial preparation
-
 Aspergillus ficuum
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
250
-
 commercial preparation Aspergillus ficuum

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
(-)-epicatechin gallate + H2O from green tea leaves Aspergillus ficuum (-)-epicatechin + gallic acid
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 ?
(-)-epigallocatechin gallate + H2O from green tea leaves Aspergillus ficuum (-)-epigallocatechin + gallic acid
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 ?
additional information tannase-treated green tea leaf extract shows increased inhibition activity on N-nitrosamine formation of secondary amines due to increased catechin levels compared to untreated leaf extract, the inhibitory effect is also higher as with ascorbic acid, overview Aspergillus ficuum ?
-
 ?
additional information tannase catalyzes the hydrolysis of ester and depside bonds in hydrolysable tannins or gallic acid esters liberating glucose or gallic acid Aspergillus ficuum ?
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 ?
tannic acid + H2O from green tea leaves Aspergillus ficuum gallate + D-glucose
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 ?

Synonyms

Synonyms Comment Organism
tannin acyl hydrolase
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 Aspergillus ficuum

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
35
-
-
 Aspergillus ficuum

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6
-
-
 Aspergillus ficuum