Hefei Fushan Yuansheng Biotechnology Co., Ltd. sells yellow-brown fruiting body ingredient. HPLC checks the ergothioneine concentration of Golden Oyster Mushroom Extract at 0.5%–5%. A controlled farm and factory system in China grows the material from strain selection to cultivation. The product is HACCP, ISO9001:2015, USDA Organic, and FSSC 22000 certified and meets EU and US organic requirements. When stored properly, mould count is below 1000 cfu/g and shelf life is 24 months.

This yellow-brown extract comes from golden oyster mushroom fruiting bodies. It smells like mushrooms and is grown in China. Because of its ergothioneine concentration, formulators can work from a standard.
Oyster mushrooms are popular edibles. Over 1000 years of use in traditional Chinese and Japanese medicine are documented. This article does not make health claims for the substance, therefore check your target market's limits before writing product labels.
| Item | Specification |
|---|---|
| Product Name | Golden Oyster Mushroom Extract |
| Appearance | Yellow-Brown |
| Used Part | Fruiting Body |
| Odor | Characteristic aroma of this product |
| Origin | China |
| Active Ingredient | Ergothioneine 0.5%–5% |
| Testing Method | HPLC |
| Heavy Metals | Meets standard |
| Microbiology | Total mold count <1000 cfu/g |
| Shelf Life | 24 months |
| Storage | Cool, dry place, away from light and high temperature |
| Certificates | HACCP, ISO9001:2015, USDA Organic, FSSC 22000 |
Parameters not shown in the table are not specified on this page. Contact us to ask for the current specification sheet and to confirm which test documents are available.
Standardisation of this extract is done with ergothioneine. Content is 0.5% to 5%. Test method is HPLC.
Reference data for oyster mushroom extracts contains various chemicals, however this standard is based primarily on ergothioneine. Double-check any other identifiers with us before you make label claims.
Our integrated fungal cultivation system, from strain selection to cultivation, has the farm and factory under one system. The production process complies with EU and US organic standards and the product is certified under HACCP, ISO9001:2015, USDA Organic and FSSC 22000.
Ergothioneine is tested HPLC for quality evaluation. Total mould count <1000 cfu/g. Heavy metals are mentioned as being within standard. If your supplier audit requires the specific standard or a test report, please ask us whatever papers are available.

Golden Oyster Mushroom Extract is offered for these dosage forms:
We provide formulation and dosage form reference suggestions. Stability, taste and solubility depend on your own base, so test the ingredient in your formula. Custom finished product development requires separate communication.
If you need a different content level, we can supply Golden Oyster Mushroom Extract in custom specifications. Send us the ergothioneine range you require.
FuYNature works with nutraceutical companies, functional food brands, dietary supplement manufacturers and health product developers. Our team can also discuss scientific evidence, formulation strategy, patent licensing and regulatory compliance support.
Packaging and Storage
Store in a cool, dry place away from light and high temperature. Shelf life is 24 months. Packaging details are confirmed on inquiry, so please tell us your order volume and preferred format.

Q: What are the ergothioneine content and test method?
A: Content is 0.5%–5%, tested by HPLC.
Q: Which certificates does the product hold?
A: HACCP, ISO9001:2015, USDA Organic and FSSC 22000. Production follows EU and US organic standards.
Q: Which dosage forms is it suitable for?
A: Collagen gummy candy, ergothioneine oral liquid, compressed candy, capsules and solid beverages. We offer reference suggestions for formulation and dosage form.
Q: Can you customize the content level?
A: Yes. Custom specifications are available. Please send the ergothioneine range you need.
Q: What are the shelf life and storage conditions?
A: Shelf life is 24 months. Store in a cool, dry place away from light and high temperature.
Send your target ergothioneine level and intended dosage form to info@extrabroc.com. Our team will reply with details on Golden Oyster Mushroom Extract, available documents and packaging