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产品简介
| 别名 | 酪朊酸 酪蛋白 酪素 酪朊 酪胶 奶酪素 |
| 英文名称 | Casein |
| CAS | No.9000-71-9 |
| 储存条件 | RT，有效期5年 |
| 外观(性状) |
白色至浅黄色粉末
|
| 纯度 | 总氮≥13.5% |
| 溶解性 | 10mg/ml 25%氨水 |
| 规格 | 100g 500g |
| 单位 | 瓶 |
培养基原材料
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。
备注：产品信息可能会有优化升级。请以实际标签信息为准。
备注：
以上数据均来自公开文献, Solarbio暂未进行独立验证, 仅供参考。
These protocols are for reference only. Solarbio does not independently validate these
methods.
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技术问答
（2）
注意：
1.本产品仅供科研使用。请勿用于医药、临床诊断或治疗，食品及化妆品等用途。请勿存放于普通住宅区。
2.为了您的安全和健康，请穿好实验服并佩戴一次性手套和口罩操作。
3.实验结果可由多种因素影响，相关处理只限于产品本身，不涉及其他赔偿。
京公网安备 11011202000391号
分子量多少KD?2023-07-24 14:46:02
您好，这是一种含磷复合蛋白，经电泳分析有不少于20种的磷蛋白组分，没有固定的分子式和分子量。
是否适用于作为ELISA封闭液?2023-04-23 10:45:25
您好，ELISA实验可以选用Elisa专用的BSA，货号:A7940，几乎检测不到 IgG、内毒素、酶和蛋白酶活性，对实验数据本底值波动影响更小。