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Details:
Yeast extract fresh yeast (yeast extract) is used as raw material, the yeast autolyzed, isolation, filtration, concentration and enzyme solution to get a tan to brown paste. Yeast natural fragrance, soluble in water, aqueous solution with pale yellow to light brown, a clarification. Yeast extract is rich in protein, amino acids, peptides, nucleotides, B vitamins, trace elements. Main effect is added nitrogen source and provide the microbial growth of all kinds of vitamins and amino acids and growth factors. General dosage is 0.2% ~ 2.0%.
Yeast extract is the ideal best biological agent and biological products essential to the main raw material, its efficacy and yeast, where eight times. In the pharmaceutical products, biological engineering, scientific research, health and epidemic prevention, the test application is very extensive, bacteria effect is remarkable. In the major industrialized production, which are widely used in biological fermentation strains of bacteria essential medium, it can greatly improve the survival rate and reproduction rate of bacteria, thus improve the quality of the product quality and yield.
Industrial-grade emulsion by yeast extract is a fresh beer yeast (enzyme) separation and enrichment of pure natural products, is rich in balanced all kinds of essential amino acids, B vitamins, nucleotides, peptide and trace elements, element is necessary for all kinds of microbial growth. Yeast extract is tan thick viscous liquid, has a special smell, but without the smell of corruption. Soluble in water, dissolve the yellow to brown, reaction in weak acid. Were treated with method of enzyme solution of yeast extract amino nitrogen content is higher, more conducive to the cultivation of the bacteria.
A, the sensory index
Index name index requirements
paste
Form brown paste, soluble in water, solution show yellow to brown
Aroma taste fresh aroma with yeast, no peculiar smell,
No visible to foreign material
Second, the physical and chemical indicators
Index name index requirements
paste
Total nitrogen (dry basis) % 9.7 or higher
Amino nitrogen (dry basis) % 3.5 or higher
Dry matter % 65 or higher
PH 4.5 6.5
Nacl content of 1.0% or less
Three, packing specification: 25 kg/barrel, padded bag.
Four, shelf life:
Under the condition of room temperature dry and original package seal storage for 12 months.
Fifth, use:
1, used for biochemical reagents, microbiological media, the fake unit cell coli glucose acid, acetic acid bacteria, bacillus, bacillus subtilis, streptococcus, staphylococcus aureus and yeast and the cultivation of mycoplasma have extremely high growth promoting effect.
2, thickener; Stabilizing agent; Emulsifier.
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