| Product Description | Product Introduction Purified and cultivated baker's yeast is used as a raw material, and it is a paste product obtained by autolysing enzymatic hydrolysis, centrifugal separation, and three-effect vacuum concentration
Description Light yellow paste, easily soluble in water; Rich in free 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 experiment; Bioengineering industries such as amino acids, organic acids, antibiotics, enzyme preparations, biological preservatives, vitamins, extracellular polysaccharides, and biological materials
Physical-chemical characteristics
Test items | index | Solubility (% ,normal temperature) | 2% completely dissolved | pH (2% solution) | 4.0-7.2 | Moisture (%) | ≤35.0 | Total nitrogen (%) | ≥10.0 | Amino nitrogen (%) | ≥4 .0 | Ash content (%) | ≤15.0 | NaCl (%) | ≤2.0 |
Microbiology
Test items
| index
| Total number of colonies（cfu/g） | ≤50000 | Coliform group（MPN/g） | ≤0.3 | Yeast（cfu/g） | ≤10.0 | Mold（cfu/g） | ≤10.0 | Salmonella，/25g | Not check out
| Shigella，/25g | Not check out
| Staphylococcus aureus，/25g | Not check out
|
Heavy metals
Test items
| index
| Total arsenic（ppm） | ≤0.5 | Lead（ppm） | ≤1.0 | Mercury（ppm） | ≤0.5 |
Amino acid composition
Types of amino acids | | Free amino acid ( % ) | Hydrolyzed amino acid ( % ) | Aspartic acid | Asp | 1.0 | 1.99 | Threonine | Thr | 0.7 | 2.04 | Serine | Ser | 2.1 | 7.43 | Glutamate | Glu | 0.5 | 1.98 | Glycine | Gly | 2.9 | 4.45 | Alanine | Ala | 1.3 | 0.52 | Cysteine | Cys | 1.5 | 2.45 | Valine | Val | 0.8 | 0.79 | Methionine | Met | 1.0 | 2.06 | Isoleucine | Ile | 0.9 | 4.51 | Leucine | Leu | 1.4 | 3.06 | Tyrosine | Tyr | 0.7 | 1.46 | Phenylalanine | Phe | 0.9 | 1.24 | Lysine | Lys | 0.9 | 3.24 | Histidine | His | 0.2 | 0.88 | Arginine | Arg | 1.1 | 2.47 | Proline | Pro | 0.6 | 1.76 | total | | 18.5 | 42.33 |
ps :The above indicators are for reference only, the specific values are subject to the actual measurement of each batch |
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C2317727