• 介绍：
  干酪素性状：白色无定形粉末或颗粒。是一种含磷复合蛋白。经电泳分析有不少于20中的磷蛋白组分，主要成分为a-酪蛋白和b-酪蛋白。干粉无臭，无味。有吸湿性。干燥时性质稳定，潮湿时易变坏。溶于碱性水溶液，溶于浓盐酸呈浅紫色，几乎不溶于水和非极性有机溶剂。相对密度1.25～1.31，等电点4.7。
  制备方法：（1）新鲜牛奶脱脂，加酸（乳酸、乙酸、盐酸或硫酸），将pH调至4.7，使干酪素微胶粒失去电荷而凝固沉淀。用这种方法得到的干酪素称为酸酪蛋白。（2）将牛奶与粗制凝乳酶作用，形成凝固沉淀物，称为粗制凝乳酶酪蛋白，呈白色粒状。凝乳酶酪蛋白比酸酪蛋白的灰分含量高。
  干酪素用途：本身可用于生化研究，配制生物培养基，也可作为增稠剂、乳化剂、稳定剂等，可用于食品当中。由其作为原料生产的其他产品有：水解干酪素用于细菌培养；水解酪蛋白（0.2%），用于鸡胚、鼠肾等一般细胞的培养；水解酪蛋白琼脂用于测定微生物对抗菌药物的敏感性，是血琼脂和巧克力琼脂的基础；胰酪胨是一种常用的细菌培养基的成分。
  干酪素毒性：天然食品，无毒。
   

• 外观： 白色至亮黄色固体

• 溶解性： 10mg/ml  25%氨水

• 储存条件： RT

• 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。

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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 *