Bulk New Crop Mushroom in SO2 | B2B Factory Supply
Jun 23, 2026
Industrial Manufacturing Process of Chinese New Crop Mushroom in SO2: A B2B Quality & Supply Chain Blueprint
Shandong Tianqi Food Co., Ltd. processes premium Chinese new crop mushroom in SO2 directly from local harvests, preserving structural cell integrity for global food manufacturers. Utilizing an airtight, food-grade drum system, our sulfur dioxide preservation method guarantees a minimum 24-month shelf life, optimized drained weight ratios, and strict adherence to international phytosanitary standards for industrial canning and food service distribution.
Harvesting Timeline: Maximizing Yield and Textural Integrity
The commercial viability of new crop mushroom in SO2 depends heavily on strict harvest timing. Our factory synchronizes collection during peak local harvest windows when ambient temperatures and humidity optimize fungal growth while preventing spore release.
Size Selection: Fresh Agaricus bisporus mushrooms are hand-picked at precise maturity stages, selecting whole champignons graded into calibrated diameters: 20–30mm, 30–40mm, and 40–60mm.
Post-Harvest Cold Chain: Harvested crops enter our temperature-controlled sorting facility within 4 hours of picking. This minimizes internal heat generation, prevents browning caused by polyphenol oxidase, and protects the firm texture required for industrial slicing and dicing.
Immediate Preservation Steps: The SO2 Processing Protocol
To secure long-term stability and maintain the strict physical-chemical parameters required by global quality control managers, raw mushrooms undergo a rapid, multi-stage sulfur dioxide immersion process.
The Blanching and Grading Phase
Mushrooms are pre-washed to remove residual substrate, then blanched in continuous steam blanchers at 95°C to 98°C for 3 to 5 minutes. This completely inactivates enzymes while reducing micro-organism counts.
The SO2 Brining Process
Blanched mushrooms are transferred to a series of stabilizing pools containing food-grade sodium metabisulfite (Na2S2O5) solution. The SO2 concentration is continuously monitored via iodometric titration to maintain legal target ranges. This process displaces intracellular oxygen, bleaching the mushroom flesh to a uniform ivory white and stopping bacterial proliferation.
Supply Chain Stability: Bulk Packaging and Logistics
Shandong Tianqi Food Co., Ltd. manages an annual output exceeding 500 containers, ensuring uninterrupted raw material streams for large-scale condiment manufacturers and canning factories worldwide.
Industrial Packaging: Finished products are packed into 50kg, high-density polyethylene (HDPE) blue food-grade drums. Each drum features a dual-layer inner lining and an airtight locking ring to prevent SO2 gas evaporation and external oxidation.
Request a Technical Data Sheet (TDS) and Quote
Optimize your production yield with consistent raw materials. Contact our sales engineering team today to receive a current spot-price quotation, request free sample for laboratory testing, or download our complete product specification sheet.
