Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise specializing in the research and development, manufacturing, and sales of fine chemicals. Headquartered in Jinan, Shandong, China, we are committed to delivering high-quality products to our global partners. Currently, over 90% of our products are exported to developed markets, including North America, Europe, Japan, South Korea, and the Middle East.
Physical Properties
- Appearance: Pale yellow to dark brown powder, characteristic yeast flavor, no visible impurities, uniform particle size.
- Melting Point: No obvious melting point; decomposes at temperatures above 200 °C.
- Boiling Point: 365.8±21.0 °C at 760 mmHg (lit.), decomposes before boiling.
- Solubility: Easily soluble in water (2% aqueous solution is clear), slightly soluble in ethanol; insoluble in non-polar organic solvents.
- Density: 1.4±0.1 g/cm3 (20 °C, lit.), bulk density 400-500 kg/m3.
- Optical Activity: No optical activity, no chiral center.
- Moisture Absorption: Strongly hygroscopic, prone to agglomeration when exposed to air with high humidity.
- pH Value: 5.0-7.5 (2% aqueous solution, 25 °C); loss on drying ≤8%; ignition residue ≤15%.
Chemical Properties
- Chemical Category: Natural organic mixture, mainly composed of amino acids, peptides, nucleic acids, B vitamins and minerals, also known as Autolyzed yeast extract.
- Stability: Stable under normal temperature and pressure (sealed); belongs to combustible solids; stable in dry environment, easy to absorb moisture and agglomerate when damp.
- Acid-Base Property: Weakly acidic to neutral; pH value of 2% aqueous solution is 5.0-7.5, stable in neutral and weakly acidic environments.
- Hydrolysis: Stable under normal storage conditions; no obvious hydrolysis; can be decomposed by high temperature and strong acid/alkali.
- Photostability: Relatively stable to light; long-term exposure to strong light will not cause obvious decomposition, but may affect color.
- Reactivity: Non-toxic, natural and safe for food use; has flavor-enhancing properties; compatible with most food additives; rich in nutrients, easy to biodegrade.
Chemical Structure
Structural formula: $$\mathrm{C_{19}H_{14}O_2}$$ (Canonical SMILES: C1=CC=C2C(=C1)C=CC3=C2C(C4=CC=CC=C34)CC(=O)O)
（Complete structural diagram available on request）
Applications
- Food industry: Used as natural flavor enhancer in condiments, instant noodles, meat products and beverages, enhancing umami and mellow taste.
- Microbiology field: Used as nutritional additive in microbial culture media, providing amino acids and vitamins for microbial growth.
- Pharmaceutical industry: Used as auxiliary material for vitamin B1 deficiency and indigestion auxiliary treatment, rich in B complex vitamins.
- Feed industry: Used as feed additive to promote animal growth and improve immunity, selecting feed-grade products that meet safety standards.
- Other fields: Used as non-animal source medium raw material in biotechnology, realizing the replacement of animal serum components.
Storage & Handling
- Storage: Sealed, cool, dry and well-ventilated; away from sunlight, heat and moisture; avoid agglomeration caused by moisture absorption.
- Temperature: 2-30 °C for long-term storage; shelf life 36 months under proper conditions; use as soon as possible after opening.
- Packaging: Sealed plastic drum or aluminum foil bag (25kg/500g), moisture-proof and sealed; small packages for laboratory use.
- Precautions: Avoid inhalation of dust; wear protective gloves and masks during operation; rinse with plenty of water immediately if contacted with eyes; classify and store with food and feed raw materials.
Description
Yeast extract (CAS: 8013-01-2) is a natural organic mixture with the molecular formula C??H??O? and average molecular weight 274.3. It is a pale yellow to dark brown powder (purity ≥95.0% dry basis) with characteristic yeast flavor, mainly prepared by autolysis, enzymatic hydrolysis and spray drying of Saccharomyces cerevisiae. It is rich in amino acids, peptides, B vitamins and minerals, non-toxic and safe, and widely used in food, microbiology, pharmaceutical and feed fields. It has strong hygroscopicity, so it should be stored in a sealed and dry environment to prevent agglomeration and ensure product stability and usability.
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