丹宁酶来源于无花果曲霉 [单宁酶]，Tannase from Aspergillus ficuum；powder, white, ≥150 U/g

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.

 

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

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.

 

1 U 相当于在 pH 4.7 和 30°C 下 310 nm 处的吸光度每分钟变化 1.0 的酶量（以单宁酸为底物，最终体积 3 mL）