在微生物培养领域,培养基的质量直接决定实验成功与否。Oxoid酵母提取物粉末以高活性与稳定的品质,成为全球科研工作者、生物制药企业及工业发酵的首选原料。无论是细菌、真菌还是重组工程菌培养,Oxoid酵母提取物粉末都能为微生物提供氮和维生素等营养来源,加速生长代谢,助力获得更精准、更高效的实验结果!
Specification
| Physical Characteristics | Specification |
|---|---|
| Appearance | Straw powder |
| Absorbance @ 450nm | 0.240 - 0.450 |
| pH (25°C) | 6.8 - 7.2 |
| Clarity | Clear |
| Loss on drying (%) | 0.0 - 6.0 |
| Ash (%) | 9.8 - 16.0 |
| Sodium chloride (%) | 0.0 - 0.5 |
| Amino nitrogen | 4.5 - 5.8 |
| Total nitrogen (%) | 10.0 - 12.5 |
| Calcium (ppm) | 0 - 500 |
| Total viable count <10,000 cfu/g | Conforms to specification |
| Spore count<2,000 spores/g | Conforms to specification |
| Microbiological Performance | Initial Inoculum | Test Result |
|---|---|---|
| Aerobic incubation at 37°C for 24 hours | Turbid growth | |
| Escherichia coli ATCC@25922 | 61 | Turbid growth |
| Staphylococcus aureus ATCC®9144 | 22 | Turbid growth |
| Enterococcus faecalis ATCC@29212 | 57 | |
| Aerobic incubation at 35 + 2°C for 72 hours | ||
| Fermentable carbohydrates | ||
| Escherichia coli ATCC@25922 | 1E+04-1E+06 | Positive |
| Aerobic incubation at 35 + 2°C for 24 hours | ||
| Indole production | ||
| Escherichia coli ATCC@25922 | 1E+04-1E+06 | Positive |
| 品名 | CAS | 货号 |
|---|---|---|
| YEAST EXTRACT (POWDER) ,Only available in the North 酵母提取物粉末,仅售北方区域 | / | LP0021B |