Preserved whole mushroom in SO2 Brief introduction of preserved whole mushroom in SO2 in drums Preserved whole mushroom in SO₂ (sulphur dioxide) are a semi-processed form of edible mushrooms, mainly champignon (Agaricus bisporus), that are treated with sulphur dioxide solution to maintain their n...
Preserved whole mushroom in SO2
Preserved whole mushroom in SO₂ (sulphur dioxide) are a semi-processed form of edible mushrooms, mainly champignon (Agaricus bisporus), that are treated with sulphur dioxide solution to maintain their natural color, texture, and freshness during storage and transport. This preservation method helps to prevent microbial growth and enzymatic browning, keeping the mushrooms suitable for further processing.
These preserved whole mushroom in SO2 are typically packed in 50kgs plastic drums and supplied to food processors as a raw material. Before final consumption, the mushrooms undergo a desalting and de-sulphuring process, and are then canned, bottled, or used in various prepared foods.

| Type | White champignon mushroom | Part | Whole mushroom |
| Item Name | Preserved whole mushroom in SO2 in drums | Storage condition | Normal temperature |
| Ingredients | White champignon mushroom, water, salt, sulphur dioxide | Package | 43kgs/drum, 370 drums for 1*20’F |
| Instruction for use | Not directly edible, requires further processing | Shelf life | 2 years |
| Place of Origin | Fujian, China | Supply time | Through the whole year |
| Preservation Process | in SO2 | Color | Natural yellow |
| Shape | Good shape | MOQ | 1*20’F |
| Item size | 1.5-6cm, depends on what you need | Certification | Physanitary certification, sanitary certification |
Natural Appearance – The whole mushrooms are preserved in their original shape, giving them an attractive and uniform look that is ideal for further processing.
Color Retention – Sulphur dioxide helps the mushrooms stay bright and white, preventing discoloration during long storage periods.
Bulk Packaging – Usually packed in strong, food-grade drums (48–50 kg or as required), convenient for large-scale food manufacturers.
Stable Quality – The preservation process ensures that mushrooms remain firm, fresh-looking, and consistent until ready for use.
Industrial Raw Material – Specifically produced for re-processing into canned mushrooms, pickled mushrooms, or other mushroom products.
Safe Storage & Transportation – The SO₂ solution protects the mushrooms from microbial spoilage, making them suitable for long-distance export.

Extended Shelf Life
SO₂ preservation prevents spoilage and discoloration, ensuring mushrooms remain usable for long-term storage and international shipment.
Cost-Effective for Bulk Supply
Packed in large drums, transportation and warehousing costs are significantly reduced compared to small retail packs.
Economical choice for importers and processors handling high volumes.
Stable Raw Material for Further Processing
Mushrooms retain their texture and structure, making them suitable for conversion into brine, vinegar, or oil-preserved products.
Ensures consistency in taste and quality after reprocessing.
