The yeast extract powder is made from fresh beer or bread yeast by autolysate of modern biotechnology or enzymatic hydrolysis, which is a powder to be formed by separation, refinement and concentrated spray drying. And it is a mixture of amino acids, peptides, water-soluble vitamins and sugars (mainly mean oligosaccharides and trehalose).
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Items
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Requirements
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Morphology
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Powder
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Color
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Light yellow or yellow brown
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Odor
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Endemic taste and odor of product, no other peculiar smell
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Impurity
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No normal visible extraneous impurity
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Item
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Industrial grade
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Pharmaceutical grade
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Reagent grade
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Total nitrogen (on DM) %
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≥7.5%
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≥8.0%
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≥8.0%
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Amino nitrogen (on DM) %
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≥2.5%
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≥3.0%
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≥3.5%
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Ash (on DM) %
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≤15.0%
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≤15.0%
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≤15.0%
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Moisture %
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≤6.0%
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≤6.0%
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≤6.0%
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PH (2% solution)
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4.5-7.5
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Acidsolution & alkalescence high-pressure
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——
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Pellucid
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Solubility (2% solution)
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Slightly soluble
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Complete lysis
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Note: The physicochemical index is general specification but we can customize product according to the requirements of customer.
