Product Introduction
Purified and cultivated baker's yeast is used as a raw material, and it is a powdery product obtained by autolysing enzymatic hydrolysis, centrifugal separation, concentration, and spray drying
Description
Light yellow powder, easily soluble in water;
Rich in amino acids, peptides, B vitamins, nucleotides, trace elements, etc.
Application
As an organic nutrient source for microorganism cultivation, it is suitable for: laboratory microorganism cultivation experiments; bioengineering industries such as amino acids, organic acids, antibiotics, enzyme preparations, biological preservatives, vitamins, exopolysaccharides, biological materials, etc.
Physical-chemical characteristics
Test items
| Index
|
Solubility (%, normal temperature)
| 2%, completely dissolved
|
pH（2%Solution） | 5.3-7.2 |
Moisture（%） | ≤6.0 |
Total nitrogen (on dry basis, %)
| ≥10.0 |
Amino nitrogen (on a dry basis, %)
| ≥4.0 |
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
|
| 41600 |
Sodium
|
| 380 |
Calcium
|
| 1980 |
Magnesium
|
| 1680 |
Zinc
|
| 126 |
Iron
|
| 44.5 |
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
B2
B5
B6
B7
B12（μg/100g）
| 9.22
59.1
12.7
14.4
4.98
6.25
|
Nicotinamide（μg/100g） | 6336
|
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 | 1.46 | 6.66 |
Threonine | Thr | 1.20 | 3.08 |
Serine | Ser | 1.08 | 3.03 |
Glutamate | Glu | 3.49 | 10.90 |
Glycine | Gly | 0.74 | 3.13 |
Alanine | Ala | 4.43 | 6.13 |
Cysteine | Cys | 0.00 | 0.47 |
Valine | Val | 2.03 | 3.79 |
Methionine | Met | 0.69 | 0.35 |
Isoleucine | Ile | 1.77 | 3.01 |
Leucine | Leu | 2.90 | 4.15 |
Tyrosine | Tyr | 1.17 | 1.91 |
Phenylalanine | Phe | 1.73 | 2.73 |
Lysine | Lys | 1.38 | 4.87 |
Histidine | His | 0.26 | 1.37 |
Arginine | Arg | 1.79 | 3.69 |
Proline | Pro | 0.64 | 2.54 |
total | | 26.78 | 61.82 |
ps :The above indicators are for reference only, the specific values are subject to the actual measurement of each batch
G2615484