42395
丹宁酶 来源于无花果曲霉
powder, white, ≥150 U/g
别名:
单宁酰基水解酶
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关于此项目
Specific activity:
≥150 U/g
Biological source:
Aspergillus sp. (A. ficuum)
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
丹宁酶是一种由植物、细菌、真菌和酵母等多种生物产生的酶。这种酶也存在于植物来源中，例如富含丹宁的蔬菜，尤其是在叶子、果实、树枝和树皮中。
Application
来自 黑曲霉 的丹宁酶被用于：
- 作为标准品测定细菌中分离的丹宁酶活性
- 研究其对细胞膜合成的单宁酸的抑制作用
- 通过酶水解葡萄皮和葡萄籽获得原花青素（PA）
Biochem/physiol Actions
丹宁酶催化位于复合单宁、没食子单宁和没食子酸酯中的酯键，导致没食子酸的释放。这种酶可用作啤酒、茶、葡萄酒和果汁制造中的澄清剂，以及处理单宁污染的农业废物和工业废水。
Other Notes
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）
signalword
Danger
hcodes
pcodes
Hazard Classifications
Resp. Sens. 1
存储类别
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
法规信息
常规特殊物品
此项目有
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
Optimization of gallic acid production from Terminalia chebula by Aspergillus niger
N. Lokeswari, K. Jaya Raju
E-Journal of Chemistry, 4, 287-293 (2007)
全球贸易项目编号
| 货号 | GTIN |
|---|---|
| 42395-250MG | 04061832103563 |
| 42395-1G | 04061826731642 |