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β-半乳糖苷酶

    
100u/mg solid

GAL

源叶
S25345 一键复制产品信息
9031-11-2
MFCD00130623
乳糖酶;β-D-半乳糖苷酶;乳糖分解酵素
β-半乳糖苷酶(9031-11-2)
货号 规格 价格 上海 北京 珠海 重庆 武汉 购买数量
S25345-1ku
100u/mg solid

¥120.00

>10 2 1 - 1
S25345-5ku
100u/mg solid

¥300.00

6 - - - -
S25345-25ku
100u/mg solid

¥420.00

>10 2 2 - 1
S25345-100ku
100u/mg solid

¥1200.00

5 - - - -

产品介绍

活力定义:每个单位乳糖酶为在pH4.5,37℃下每分钟分解oNPG产生1 µmol的oNP(邻硝基酚)所需要的酶量

温度范围:5℃~65℃,最佳温度为55℃~60℃         

pH范围:有效pH为3.0~8.0,最佳pH为4.0~5.5                                          

产品外观:白色到浅棕色粉末,颜色随批次的不同而不同。

来源:米曲霉

产品气味:轻微的发酵气味       

SMILES: O1[C@H]([C@@H]([C@H]([C@H]([C@H]1CO)O)O)O)O
溶解性: 推荐使用缓冲液:pH4.5    HAc-NaOH  缓冲液:分别准确量取  50ml  的  2.0mol/L  的乙酸溶液和  11.3ml  的  4.0mol/L  的氢氧化钠溶  液于  800ml  的去离子水中,充分搅拌。用  PH  计测定校检,必要时用冰乙酸或  4.0mol/L  的氢氧化钠溶液调节,使  pH  在  4.5±0.05,定容至  1000ml  。
储存条件: 2-8℃
EC编号: 3.2.1.23
注意: 部分产品我司仅能提供部分信息,我司不保证所提供信息的权威性,仅供客户参考交流研究之用。

参考文献(24篇)

19. [IF=7.7] Fan Xie et al."Enzymatic degalactosylation of Tamarind seed polysaccharide and its impact on the quality of frozen grass carp surimi gels."INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES.2025 Feb;:140543 18. [IF=7] Hangyu Hu et al."Synthesis of novel lactose-derived oligosaccharides by two-step enzymatic reactions and structural characterization of the oligomers."FOOD RESEARCH INTERNATIONAL.2025 May;208:116177 17. [IF=10.7] Mengjiao Li et al."Enhanced electrochemiluminescence of mixed-ligand metal-organic framework with suppressed non-radiative transitions for “signal-off” biosensing of β-galactosidase."BIOSENSORS & BIOELECTRONICS.2025 Apr;:117470 16. [IF=8.5] Yi Fan et al."Membrane separation assisted colorimetric/fluorescent detection of β-galactosidase-positive bacteria in milk and milk powder based on the oxidase-like activity of CoOOH nanosheets."FOOD CHEMISTRY.2024 Aug;:140946 15. [IF=10] Bo He et al."An Endocellulase-triggered NO Targeted-Release Enzyme-Prodrug Therapy System and Its Application in Ischemia Injury."Advanced Healthcare Materials.2024 Jun;:2401599 14. [IF=5.2] Yaozu Guo et al."Increase in Lactulose Content in a Hot-Alkaline-Based System through Fermentation with a Selected Lactic Acid Bacteria Strain Followed by the β-Galactosidase Catalysis Process."Foods.2023 Jan;12(23):4317 13. [IF=5.6] Xu Wencheng et al."Tetrandrine inhibits the proliferation of mesangial cells induced by enzymatically deglycosylated human IgA1 via IgA receptor/MAPK/NF-κB signaling pathway."Frontiers in Pharmacology.2023 Jun;14: 12. [IF=4.125] Xiaolong Ren et al."Effects of tamarind seed polysaccharides on physicochemical characteristics of frozen dough: structure–function relationship."JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE.2023 May;: 11. [IF=5.561] Yan Yang et al."Optimization of Extraction Process of Polysaccharides MAP-2 from Opuntia Milpa Alta by Response Surface Methodology and Evaluation of Its Potential as α-Glucosidase Inhibitor."Foods.2022 Jan;11(21):3530 10. [IF=5.396] Ziyu Deng et al."Carboxymethylpachymaran entrapped plant-based hollow microcapsules for delivery and stabilization of β-galactosidase."Food Funct. 2019 Aug;10(8):4782-4791 9. [IF=6.558] Menglan Shi et al."Ratiometric fluorescence monitoring of α-glucosidase activity based on oxidase-like property of MnO2 nanosheet and its application for inhibitor screening."Anal Chim Acta. 2019 Oct;1077:225 8. [IF=7.79] Yaping Zhong et al."Water-soluble MoS2 quantum dots for facile and sensitive fluorescence sensing of alkaline phosphatase activity in serum and live cells based on the inner filter effect."Nanoscale. 2018 Nov;10(45):21298-21306 7. [IF=9.594] Fushuang Niu et al."Electrochemically generated green-fluorescent N-doped carbon quantum dots for facile monitoring alkaline phosphatase activity based on the Fe3+-mediating ON-OFF-ON-OFF fluorescence principle."Carbon. 2018 Feb;127:340 6. Li, Ai-li, et al. "Effect of 2′-fucosyllactose supplementation on intestinal flora in mice with intestinal inflammatory diseases." International Dairy Journal 110 (2020): 104797.https://doi.org/10.1016/j.idairyj.2020.104797 5. Deng, Ziyu, et al. "Carboxymethylpachymaran entrapped plant-based hollow microcapsules for delivery and stabilization of β-galactosidase." Food & function 10.8 (2019): 4782-4791.https://doi.org/10.1039/C9FO00649D 4. Deng, Ziyu, et al. "Carboxymethylpachymaran-zein coated plant microcapsules-based β-galactosidase encapsulation system for long-term effective delivery." Food Research International 128 (2020): 108867.https://doi.org/10.1016/j.foodres.2019.108867 3. Li, Yuan, et al. "Metal–Enzyme Hybrid Microspheres Assembled via Mg2+-Allosteric Effector." Industrial & Engineering Chemistry Research 59.46 (2020): 20278-20284.https://doi.org/10.1021/acs.iecr.0c04721 2. Ziyu Deng, Jing Li, Yaqiong Pei, Jiawei Wan, Bin Li, Hongshan Liang, Oligosaccharides act as the high efficiency stabilizer for β-galactosidase under heat treatment, International Journal of Biological Macromolecules, Volume 137, 2019, Pages 69-76, ISSN 01 1. 罗艳华 王全杰 陈沛海 等. 乌氏粘度计测定废革屑水解液粘均分子量的研究[J]. 皮革与化工 2017 01(v.34;No.171):14-18.

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摩尔浓度计算器

质量 (mg) = 浓度 (mM) x 体积 (mL) x 分子摩尔量 (g/mol)

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