计算溶液所需的质量、体积或浓度。
BioReagent,适用于微生物学 级 ,适用于对基线干扰要求严格的色谱和分析工作流程。
室温。常规运输 。请查阅批次 COA 获取详细规格。
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在色谱分析、有机合成和交叉偶联反应领域已被 0 篇同行评审文献引用。
牛肉粉是用新鲜牛肉经过剔除脂肪、消化、过滤、浓缩、喷雾干燥而得到的一种棕黄色至棕褐色的粉状产品。本品富含有肌酸、肌酸酐、多肽类、氨基酸类、核苷酸类、有机酸类、矿物质类及维生素类的水溶性物质。此外含硫氨酸较多,而且含有更多的细菌生长需要的维生素和其它生长因子。其主要作用是补充蛋白胨以及其它氮源的营养不足,为微生物发酵工业高档培养基原材料。
使用方法:
用于培养基原料,充分溶解、灭菌后使用。
常规各项理化指标:
感官指标
| 项目 | 要求 |
| 形态 | 粉状 |
| 色泽 | 浅黄色粉末 |
| 气味 | 有产品特有的气味,无其它异味 |
| 杂质 | 无正常视力可见的外来杂质 |
理化指标
| 项目 | 试剂级 |
| 总氮量 (以干基计) % | ≥14.0% |
| 氨基氮 (以干基计) % | ≥2.5% |
| 灰分 (以干基计) % | ≤13.0% |
| 水分 % | ≤6.0% |
| PH值 (2%水溶液) | 4.5-7.0 |
| 硝酸盐及碱性高压试验 | 澄清 |
| 透明度 (2%水溶液) | 澄清 |
Beef Powder is a yellowish-brown to brown powdered product made from fresh beef through defatting, digestion, filtration, concentration and spray drying. This product is rich in water-soluble substances such as creatine, creatinine, polypeptides, amino acids, nucleotides, organic acids, minerals and vitamins. It also contains relatively high levels of sulfur-containing amino acids, as well as more vitamins and other growth factors required for bacterial growth. Its main function is to supplement nutritional deficiencies of peptone and other nitrogen sources, serving as a high-grade raw material for culture media in the microbial fermentation industry.
Directions for Use:
Used as a culture medium raw material. Dissolve thoroughly and sterilize before use.
Conventional Physical and Chemical Indicators:
Organoleptic Indicators
| Item | Requirements |
| Form | Powdered |
| Color | Light yellow powder |
| Odor | Characteristic odor of the product, no other off-odors |
| Impurities | No visible foreign impurities under normal vision |
Physical and Chemical Indicators
| Item | Reagent grade |
| Total Nitrogen (dry basis), % | ≥14.0% |
| Amino Nitrogen (dry basis), % | ≥2.5% |
| Ash (dry basis) % | ≤13.0% |
| Moisture % | ≤6.0% |
| pH (2% aqueous solution) | 4.5-7.0 |
| Nitrate & Alkaline Autoclave Test | Clear |
| Transparency (2% aqueous solution) | Clear |
通过匹配包装上的批号来查找并下载产品的 COA,每批产品都进行了严格的验证,您可放心使用!
| 批号(Lot Number) | 证书类型 | 货号 |
|---|---|---|
| 分析证书 | B1522316 |
我们的级别选择指南涵盖了目录中所有的变体的纯度、稳定剂状态和应用适用性。
查看 BioReagent 级别指南 → 查看 Suitable for microbiology 级别指南 →