42395
Tannase from Aspergillus ficuum
powder, white, ≥150 U/g
Synonym(s):
Tannin acyl Hydrolase
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About This Item
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biological source
Aspergillus sp. (A. ficuum)
Quality Level
form
powder
specific activity
≥150 U/g
impurities
25 mM potassium phosphate
250 mM NaCl
50% glycerol
color
white
storage temp.
2-8°C
General description
Tannase is an enzyme that is produced by several organisms such as plants, bacteria, fungi, and yeast. This enzyme is also found in plant sources such as tannin-rich vegetables, especially in the leaves, fruits, branches, and bark.
Application
Tannase from Aspergillus ficuum has been used:
- as a standard to determine the tannase activity of bacterial isolates
- to study its effects on the inhibitory activity of tannic acid on biofilm formation
- to obtain Proanthocyanidins (PA) by enzymatic hydrolysis of grape skin and seeds
Biochem/physiol Actions
Tannase catalyzes the ester bonds located in complex tannins, gallo-tannins, and gallic acid esters, which results in the release of gallic acid. This enzyme can be used as a clarifying agent in the manufacture of beer, tea, wine, and juices and to treat tannin-polluting agricultural waste and industrial effluents.
Unit Definition
1 U corresponds to the amount of enzyme which changes the absorbance at 310 nm by 1.0 per minute at pH 4.7 and 30°C (tannic acid as substrate, final volume 3 ml)
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Resp. Sens. 1
Storage Class Code
11 - Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Certificates of Analysis (COA)
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E-Journal of Chemistry, 4, 287-293 (2007)
Amrita Banerjee et al.
The protein journal, 31(4), 306-327 (2012-03-31)
The tannase protein sequences of 149 bacteria and 36 fungi were retrieved from NCBI database. Among them only 77 bacterial and 31 fungal tannase sequences were taken which have different amino acid compositions. These sequences were analysed for different physical
I Darah et al.
Applied biochemistry and biotechnology, 165(7-8), 1682-1690 (2011-09-29)
Agitation speed was found to influence the tannase production and fungal growth of Aspergillus niger FETL FT3. The optimal agitation speed was at 200 rpm which produced 1.41 U/ml tannase and 3.75 g/l of fungal growth. Lower or higher agitation
Kevin D Kohl et al.
Environmental microbiology, 18(6), 1720-1729 (2015-03-11)
It has been hypothesized that herbivores host tannin-degrading bacteria (TDB) to overcome the toxic challenges posed by plant tannins. While TDB have been isolated from the guts of numerous mammals, their functional significance to their hosts has never been explicitly
Chandini S Kumar et al.
Critical reviews in food science and nutrition, 53(2), 180-197 (2012-10-18)
Ready-to-drink (RTD) tea is a popular beverage in many countries. Instability due to development of haze and formation of tea cream is the common problem faced in the production of RTD black tea beverages. Thus decreaming is an important step
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