| 产品名称 | 酵母浸粉 |
|---|---|
| 英文名称 | Yeast extract,powder |
| 别名 | 酵母提取物;酵母浸出粉 |
| 应用 | 酵母提取物被用作多种微生物和分子遗传学应用的细菌学培养基成分 |
| 规格或纯度 | 超纯级,用于微生物 |
| 运输条件 | 常规运输 |
产品介绍
以纯化培养的面包酵母为原料,采用生物定向降解和膜过滤技术,经浓缩、喷雾干燥得到的粉状产品
性状描述
浅黄色粉末,易溶于水,较吸潮;
富含游离氨基酸、多肽、B族维生素、核苷酸、微量元素等,小分子肽含量丰富
应用
作为微生物培养有机营养源,适用于:实验室菌种保藏、扩培、微生物培养实验;高附加值发酵行业(疫苗、重组蛋白表达、胰岛素、干扰素、透明质酸及细胞培养)
理化特性
检测项目 | 指标 |
溶解度(%,常温) | 10%澄清透亮,无磷酸盐灭菌沉淀 |
pH(2%溶液) | 6.0-7.5 |
水分(%) | ≤6.0 |
总氮(以干基计,%) | ≥10.0 |
氨基氮(以干基计,%) | ≥5.0 |
灰分(%) | ≤15.0 |
NaCl(%) | ≤2.0 |
微生物指标
检测项目 | 指标 |
菌落总数(cfu/g) | ≤10000 |
大肠菌群(MPN/g) | ≤0.3 |
致病菌 | 不得检出 |
重金属
检测项目 | 指标 |
总砷(ppm) | ≤0.5 |
铅(ppm) | ≤1.0 |
微量元素
检测项目(mg/kg) | 指标 | |
钾 | Potassium | 31911.66 |
钠 | Sodium | 5738.91 |
钙 | Calcium | 355.25 |
镁 | Magnesium | 2673.59 |
锌 | Zinc | 80.94 |
铁 | Iron | 80.21 |
ps :以上指标仅供参考, 具体数值以每批实测为准
维生素
检测项目(ppm) | 指标 |
B1 B5 B6 B7 B12(μg/100g) | 8.62 11.68 6.09 3.59 7.9 |
烟酰胺(μg/100g) | 4104 |
ps :以上指标仅供参考, 具体数值以每批实测为准
氨基酸
氨基酸种类 | 游离氨基酸(%) | 水解氨基酸(%) | |
天冬氨酸 | Asp | 2.39 | 6.95 |
苏氨酸 | Thr | 2.24 | 2.67 |
丝氨酸 | Ser | 1.61 | 2.48 |
谷氨酸 | Glu | 6.08 | 11.86 |
甘氨酸 | Gly | 0.94 | 3.01 |
丙氨酸 | Ala | 5.38 | 6.96 |
半胱氨酸 | Cys | 0.00 | 0.00 |
缬氨酸 | Val | 2.46 | 3.46 |
蛋氨酸 | Met | 1.58 | 0.46 |
异亮氨酸 | Ile | 0.20 | 3.21 |
亮氨酸 | Leu | 3.59 | 4.45 |
酪氨酸 | Tyr | 0.96 | 1.39 |
苯丙氨酸 | Phe | 2.26 | 2.66 |
赖氨酸 | Lys | 2.04 | 4.72 |
组氨酸 | His | 0.63 | 1.33 |
精氨酸 | Arg | 1.95 | 3.25 |
脯氨酸 | Pro | 1.25 | 2.82 |
合计 | 35.55 | 61.66 |
ps :以上指标仅供参考,具体数值以每批实测为准
Product Introduction
Using purified and cultivated baker's yeast as raw material, using bio-directional degradation and membrane filtration technology, the powdery product obtained by concentration and spray drying
Description
Light yellow powder, easily soluble in water, relatively moisture absorbing;
Rich in free amino acids, peptides, B vitamins, nucleotides, trace elements, etc., and rich in small molecule peptides
Application
As an organic nutrient source for microbial culture, it is suitable for: laboratory strain preservation, expansion culture, microbial culture experiment; high value-added fermentation industry (vaccine, recombinant protein expression, insulin, interferon, hyaluronic acid and cell culture)
Physical-chemical characteristics
Test items | Index |
Solubility (%, normal temperature) | 10% clear and translucent, no phosphate sterilization precipitation |
pH(2%Solution) | 6.0-7.5 |
Moisture(%) | ≤6.0 |
Total nitrogen (on dry basis, %) | ≥10.0 |
Amino nitrogen (on a dry basis, %) | ≥5.0 |
Ash content (%) | ≤15.0 |
NaCl(%) | ≤2.0 |
Microbiology
Test items | Index |
Total number of colonies(cfu/g) | ≤10000 |
Coliform(MPN/g) | ≤0.3 |
Pathogenic bacteria | Not check out |
Heavy metals
Test items | Index |
Total arsenic(ppm) | ≤0.5 |
lead(ppm) | ≤1.0 |
Minerals
Test items(mg/kg) | Index | |
Potassium | 31911.66 | |
Sodium | 5738.91 | |
Calcium | 355.25 | |
Magnesium | 2673.59 | |
Zinc | 80.94 | |
Iron | 80.21 |
ps :The above indicators are for reference only, the specific values are subject to the actual measurement of each batch
Average vitamin composition
Test items(ppm) | Index |
B1 B5 B6 B7 B12(μg/100g) | 8.62 11.68 6.09 3.59 7.9 |
Nicotinamide(μg/100g) | 4104 |
ps :The above indicators are for reference only, the specific values are subject to the actual measurement of each batch
Amino acid composition
Types of amino acids | Free amino acids(%) | Hydrolyzed amino acid(%) | |
Aspartic acid | Asp | 2.39 | 6.95 |
Threonine | Thr | 2.24 | 2.67 |
Serine | Ser | 1.61 | 2.48 |
Glutamate | Glu | 6.08 | 11.86 |
Glycine | Gly | 0.94 | 3.01 |
Alanine | Ala | 5.38 | 6.96 |
Cysteine | Cys | 0.00 | 0.00 |
Valine | Val | 2.46 | 3.46 |
Methionine | Met | 1.58 | 0.46 |
Isoleucine | Ile | 0.20 | 3.21 |
Leucine | Leu | 3.59 | 4.45 |
Tyrosine | Tyr | 0.96 | 1.39 |
Phenylalanine | Phe | 2.26 | 2.66 |
Lysine | Lys | 2.04 | 4.72 |
Histidine | His | 0.63 | 1.33 |
Arginine | Arg | 1.95 | 3.25 |
Proline | Pro | 1.25 | 2.82 |
total | 35.55 | 61.66 |
ps :The above indicators are for reference only, the specific values are subject to the actual measurement of each batch
| 个人防护设备 | Eyeshields,Gloves,type N95 (US),type P1 (EN143) respirator filter |
|---|---|
| WGK | 3 |
| CAS编号 | 8013-01-2 |
|---|---|
| 敏感性 | 易吸潮 |
| 储存温度 | 避光,干燥 |
| MDL号 | MFCD00132599 |
| EC号 | 232-387-9 |
| 品牌 | 阿拉丁 |