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- 详细信息
- 文献和实验
- 技术资料
- 保质期:
3年
- 英文名:
α-Amylase (B. licheniformis)
- 库存:
请咨询
- 供应商:
上海经科化学科技有限公司
- 保存条件:
常温/冷藏
- 规格:
40ml/100ml
| 规格: | 40ml | 产品价格: | ¥2907.0 |
|---|---|---|---|
| 规格: | 100ml | 产品价格: | ¥5814.0 |
α-淀粉酶:
The E-BLAAM-10ML pack size has been discontinued (read more).
High purity α-Amylase (Bacillus licheniformis) for use in research, biochemical enzyme assays and in vitro diagnostic analysis.
For use in Megazyme Dietary Fiber methods, suitable for use at pH 6.5 and above.
E-BLAAM-A-100mL specifically to be used with ANKOMTDF Dietary Fiber Analyzer.
| Content: | 10 mL - 3,000 Units/mL or 40 mL - 3,000 Units/mL or 100 mL - 3,000 Units/mL or 100 mL - 750 Units/mL (ANKOM) |
| Shipping Temperature: | Ambient |
| Storage Temperature: | 2-8oC |
| Formulation: | Stabilised solution |
| Physical Form: | Solution |
| Stability: | > 1 year under recommended storage conditions |
| Enzyme Activity: | α-Amylase |
| EC Number: | 3.2.1.1 |
| CAZy Family: | GH13 |
| CAS Number: | 9000-90-2, 9000-85-5 |
| Synonyms: | alpha-amylase; 4-alpha-D-glucan glucanohydrolase |
| Source: | Bacillus licheniformis |
| Molecular Weight: | 58,000 |
| Expression: | Purified from Bacillus licheniformis |
| Specificity: | endo-hydrolysis of α-1,4-D-glucosidic linkages in starch. |
| Specific Activity: | ~ 55 U/mg (40oC, pH 6.5 on Ceralpha reagent) |
| Unit Definition: | One Unit of α-amylase is the amount of enzyme required to release one µmole of p-nitrophenol from blocked p-nitrophenyl-maltoheptaoside per minute (in the presence of excess α-glucosidase) at pH 6.0 and 40oC. |
| Temperature Optima: | 75oC |
| pH Optima: | 6.5 |
| Application examples: | For use in Megazyme Dietary Fiber methods. |
| Method recognition: | EBC Method 6.5 |
α-淀粉酶说明书(PDF)请向客服索取!
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文献和实验1.Effects of suspension media on high pressure processing of starches with different crystalline structures.
Gonzalez, A. & Wang, Y. J. (2023). Food Chemistry, 429, 136933.
2.The RLCK–VND6 module coordinates secondary cell wall formation and adaptive growth in rice.
Cao, S., Wang, Y., Gao, Y., Xu, R., Ma, J., Xu, Z., Shang-Guan, K., Zhang, B. & Zhou, Y. (2023). Molecular Plant, 16(6), 999-1015.
问:我记得半年前见习时用的是PNP-G7法测α-淀粉酶,现在又改进为EPS-G7法,二者有何区别?哪个方法更好?再有二者的英文全称及汉语全文又是怎样的? 我想:EPS-G7应该是 4,6-ethylidene-(G7)-1,4-nitrophenyl-(G1)-α,D-maltoheptaoside4,6-亚乙基-α,D-麦芽7糖苷-对硝基酚。参考自:上海申能-德赛试剂说明书,但是我不确定是否正确无误,尤其是E、P、S三个字母分别代表什么?还请各位老师指点!答:EPS-G7英文
胆甾烯酮还原酶 cholestenone 5αred-uctase
存在于前列腺、精囊和肝脏内,能在类固醇的 4和 5位间的双键处加入氢原子,从而成为 5α -还原体形成的酶 E. C. 1. 3. 1. 22。氢由 NADPH供给。例如,睾酮可通过前列腺细胞核等,此酶的作用是变成二氢睾酮后作为真的雄性激素再产生作用。
缺乏维生素 E,就会阻碍受精卵在子宫内着床后的发育,可使精细胞变性,发生退化,引起不孕症。此外,还能引起肌肉萎缩和运动麻痹。在许多哺乳动物中都可见到 E缺乏症,但在人体中,还没有得到确实的 E缺乏症的证据,一般在生物体内有防止维生素 A、胡萝卜素、脂肪等氧化的作用。亦有报道其磷酸脂可抑制琥珀酸氧化系统和抑制磷酸酶的作用,但都还未最后确定。成人每天需要量约为 30毫克的混合生育酚。定量法有吸收测定和比色法等,但因而为α,β,γ、δ都作为同一效力被测定,所以测定数值比生物学效力高,所以并不是太好的方法。




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