• 介紹：
  干酪素性狀：白色無定形粉末或顆粒。是一種含磷復合蛋白。經(jīng)電泳分析有不少于20中的磷蛋白組分，主要成分為a-酪蛋白和b-酪蛋白。干粉無臭，無味。有吸濕性。干燥時性質(zhì)穩(wěn)定，潮濕時易變壞。溶于堿性水溶液，溶于濃鹽酸呈淺紫色，幾乎不溶于水和非極性有機溶劑。相對密度1.25～1.31，等電點4.7。
  制備方法：（1）新鮮牛奶脫脂，加酸（乳酸、乙酸、鹽酸或硫酸），將pH調(diào)至4.7，使干酪素微膠粒失去電荷而凝固沉淀。用這種方法得到的干酪素稱為酸酪蛋白。（2）將牛奶與粗制凝乳酶作用，形成凝固沉淀物，稱為粗制凝乳酶酪蛋白，呈白色粒狀。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，配制生物培養(yǎng)基，也可作為增稠劑、乳化劑、穩(wěn)定劑等，可用于食品當中。由其作為原料生產(chǎn)的其他產(chǎn)品有：水解干酪素用于細菌培養(yǎng)；水解酪蛋白（0.2%），用于雞胚、鼠腎等一般細胞的培養(yǎng)；水解酪蛋白瓊脂用于測定微生物對抗菌藥物的敏感性，是血瓊脂和巧克力瓊脂的基礎(chǔ)；胰酪胨是一種常用的細菌培養(yǎng)基的成分。
  干酪素毒性：天然食品，無毒。
   

• 外觀： 白色至亮黃色固體

• 溶解性： 10mg/ml  25%氨水

• 儲存條件： RT

• 注意：部分產(chǎn)品我司僅能提供部分信息，我司不保證所提供信息的權(quán)威性，僅供客戶參考交流研究之用。

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輸入產(chǎn)品批號：

本計算器可幫助您計算出特定溶液中溶質(zhì)的質(zhì)量、溶液濃度和體積之間的關(guān)系，公式為：

質(zhì)量 (mg) = 濃度 (mM) x 體積 (mL) x 分子摩爾量 (g/mol)

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