Golden Oyster Mushroom

The golden oyster mushroom

The golden oyster mushroom is Pleurotus citrinopileatus. It belongs to the oyster mushroom genus, alongside the more familiar grey oyster. Its bright yellow caps grow in dense clusters. It is an edible species native to East Asia and now cultivated in many countries.

Like other oyster mushrooms, it grows on plant-based substrates such as straw or hardwood sawdust. Growers harvest the fruiting bodies, which are the visible caps and stems. Below them sits the mycelium, a network of fine threads running through the substrate.

As a source material

Golden oyster mushroom is one raw material used for ergothioneine extraction. FC Materials offers GLISERA EGT®, which its product page describes as naturally extracted from golden oyster mushroom. FC sources the ingredient from a trusted global partner and does not grow or extract the mushroom itself. The GLISERA EGT® branded page has the ingredient profile and documentation requests. Related ingredients sit in our medicinal mushroom extracts category.

Formulation notes

• Mushroom-derived powders can vary in colour between harvests. Agree a colour range or reference sample.
• Check how your market wants the source named on the label: Latin name, common name or both.
• Confirm that the substrate and processing aids fit any vegan or allergen statements you plan to make.

What to ask your supplier

• How is the species identity confirmed, for example by morphology or DNA testing?
• Is the material fruiting body, mycelium or a mix?
• Which substrate is used, and does it contain any animal-derived inputs?
• Is cultivation indoor and controlled, or seasonal and outdoor?
• Can each batch be traced to a grower, site and harvest lot?
• Where are the mushrooms grown, and where are they extracted?
• A COA covering the marker assay, heavy metals, pesticide residues and microbiology. Mushrooms can take up metals from their substrate, so this data matters.

Claims on products made with this ingredient must satisfy the rules of each destination market. For questions on source and specification, WhatsApp us.