King Oyster Mushroom in SO2 in Drums — Product Introduction King Oyster Mushroom (Pleurotus eryngii) preserved in SO₂ solution is a widely used semi-processed raw material for food factories. The product maintains natural shape, firm texture, and clean color through controlled sulfuration, ensuri...
King Oyster Mushroom (Pleurotus eryngii) preserved in SO₂ solution is a widely used semi-processed raw material for food factories. The product maintains natural shape, firm texture, and clean color through controlled sulfuration, ensuring long-term preservation and excellent suitability for further processing.
King Oyster Mushrooms are carefully selected, washed, trimmed, and processed into different styles (whole, sliced, diced, strips).
They are then immersed in a food-grade SO₂ preservation liquid and packed into large HDPE drums for safe storage and export.
This semi-finished form ensures:
Stable color
Long shelf life
Easy rehydration/washing
High yield for secondary production
Whole (small / medium / large)
Sliced (3–5 mm or custom thickness)
Strips
Diced (10×10 mm, 15×15 mm, or as required)
Halves / Quarters
| Item Name | King oyster mushroom in SO2 in drums |
| Raw Material | Fresh King Oyster Mushroom |
| Preservation Method | SO₂ solution |
| SO₂ Content | Typically 600–1200 ppm (adjustable per buyer requirement) |
| Moisture | ≥ 90% |
| Color | Natural white to light yellow |
| Impurity | None visible |
| Taste / Odor | Typical mushroom flavor, no off-odor |
| Microbiology | Meets export standards after reprocessing |

Standard Drum: 50 kg per drum
Drum Liner: Double food-grade PE inner bag
Liquid Medium: SO₂ solution
Net Weight / Gross Weight: 42kgs/72kgs
Loadability:
About 360 drums per 20’FCL
Shelf Life: 12 months when kept sealed
Storage: Cool place, away from direct sunlight
After Opening: Needs immediate processing or additional preservation
Must be thoroughly washed to remove SO₂ before consumption
King oyster mushroom in SO2 in drums is a semi-finished industrial ingredient, widely used by food processors because of its stable color, firm texture, and long storage life. After thorough washing and de-sulfuring, it becomes a clean and versatile raw material suitable for many downstream applications.
King oyster mushroom in SO2 in drums are ideal for canned mixed mushrooms
Used in canned king oyster mushroom halves/slices
Excellent shape retention after retorting
Maintains firm bite and bright color
After desulfuring, the mushrooms can be:
Marinated with vinegar, oil, spices
Used for ready-to-eat antipasto-style products
Processed into Asian pickled mushroom snacks
Suitable for export and retail packs (glass jar, pouch, tin)
Used as a high-quality topping/ingredient for:
Instant noodle cups or bowls
Ready-to-eat rice meals
Hotpot bases and seasoning packets
Meal prep kits
The mushroom’s texture withstands boiling and reheating.

King oyster mushroom in SO2 in drums Commonly used for:
IQF mushroom mixes
Vegetable blends
Stir-fry mixed vegetables
Frozen instant dishes
King oyster mushrooms maintain good structure after freezing.
After washing and blanching, they can be:
Hot-air dehydrated
Freeze-dried (FD) into slices or dices
Used for soup stock powders or seasoning blends
This is popular when factories want uniform raw materials year-round.
Widely used in: Central kitchens, Restaurant supply chains, Meal production factories, Retort pouch meals and convenience dishes
Applications include:
Stir-fry dishes
Mushroom sauces
Savory fillings (dumplings, buns, pastries)
Used as a natural ingredient for:
Plant-based meat texture enhancers
Vegan protein dishes
High-fiber vegetable fillings
Its firm, meaty texture is highly valued in the plant-based industry.
Many importers buy king oyster mushrooms in SO₂ drums as:
A stable raw material for local processing
A way to balance seasonal shortages
A cost-effective alternative to fresh mushrooms
King oyster mushroom in SO2 in drums is used across canning, pickling, freezing, drying, instant foods, plant-based products, and catering industries because it is stable, versatile, economic, and easy to process.

Stable supply and consistent quality
More economical than fresh mushrooms for industrial use
Easy for long-distance export
Controlled SO₂ ensures color retention and safety
Suitable for high-volume factory production