• 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℃，蕞佳温度为55℃～60℃         

  pH范围：有效pH为3.0～8.0，蕞佳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。

   

  产品气味：轻微的发酵气味       

• 储存条件： 2-8℃

• 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。

• 22. [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

• 21. [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

• 20. [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

• 19. [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:

• 18. [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;:

• 17. [IF=8.008] Xiaowan Han et al."Analyte-Triggered Excited-State Intramolecular Proton Transfer- Delayed Fluorescence: A General Approach for Time-Resolved Turn-On Fluorescence Imaging."ANALYTICAL CHEMISTRY.2023;XXXX(XXX):XXX-XXX

• 16. [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

• 15. [IF=4.142] Li Cong et al."A fluorescence strategy for monitoring α-glucosidase activity and screening its inhibitors from Chinese herbal medicines based on Cu nanoclusters with aggregation-induced emission."Anal Bioanal Chem. 2021 Apr;413(9):2553-2563

• 14. [IF=5.279] Ziyu Deng et al."Designable Carboxymethylpachymaran/Metal Ion Architecture on Sunflower Sporopollenin Exine Capsules as Delivery Vehicles for Bioactive Macromolecules."J Agr Food Chem. 2020;68(47):13990–14000

• 13. [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

• 12. [IF=6.057] Jinying Liu et al."A pH-responsive fluorometric and colorimetric system based on silicon quantum dots and 4-nitrophenol for urease activity detection."Talanta. 2022 Jan;237:122956

• 11. [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

• 10. [IF=6.953] Ziyu Deng et al."Oligosaccharides act as the high efficiency stabilizer for β-galactosidase under heat treatment."Int J Biol Macromol. 2019 Sep;137:69

• 9. [IF=6.057] Chen Guoning et al."Preparation of molecularly imprinted polymers and application in a biomimetic biotin-avidin-ELISA for the detection of bovine serum albumin."Talanta. 2019 Jun;198:55

• 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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本计算器可帮助您计算出特定溶液中溶质的质量、溶液浓度和体积之间的关系，公式为：

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

• pg ng μg mg g kg =
  fM pM nM μM mM M *
  nL μL mL L *