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

别名:单宁酰基水解酶,鞣酸酶,丹宁酶,单宁酯酰水解酶,Tannin acyl Hydrolase

CAS号: 9025-71-2 EC 号: 232-804-4 MDL编号: MFCD00212735 NACRES: NA.54
制造商品牌: 西格玛 Sigma-Aldrich
货号(SKU): 42395
CAS号: 9025-71-2
MDL号: MFCD00212735
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¥2,609.26

说明

单宁酶是一种由植物、细菌、真菌和酵母等多种生物产生的酶。这种酶也存在于富含单宁的植物中,尤其是在树叶、水果、树枝和树皮中。
单宁酶催化复杂单宁、没食子酸单宁和没食子酸酯中的酯键,从而释放没食子酸。这种酶可作为澄清剂用于啤酒、茶、葡萄酒和果汁的生产,以及处理单宁污染的农业废物和工业废水。

一般描述

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.
 

应用

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

生化/生理作用

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.
 

单位定义

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)
 
 

属性

生物来源

Aspergillus sp. (A. ficuum)

形式

powder

specific activity

≥150 U/g

杂质

25 mM potassium phosphate
250 mM NaCl
50% glycerol

颜色

white

储存温度

2-8°C

 

安全信息

象形图

Health hazard

警示用语:

Danger

危险声明

预防措施声明

危险分类

Resp. Sens. 1

储存分类代码

11 - Combustible Solids

WGK

WGK 1

个人防护装备

dust mask type N95 (US), Eyeshields, Faceshields, Gloves

商品规格
属性名称属性值
储存温度 Storage temp.2-8°C冷藏
全球实时库存 Availability √美国St. Louis ≥ 99 | 欧洲Eur. ≥ 10 | 東京Tokyo ≥ 22 | 香港与北京 ≥ 32
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