Key points of processing technology of frozen sweet corn

(1) Process Flow: Raw Materials → Washing → Blanching → Cooling → Freezing → Packaging → Refrigeration (B) Operational Notes: 1. Raw Material Selection: The maturity level of the raw material directly affects the final product quality. Timely harvesting is crucial for maintaining flavor and texture. If harvested too late, the water and sugar content will convert to starch, resulting in reduced sweetness and poor taste. After harvesting, the grains should be processed and frozen as soon as possible. The ideal raw material should have a bright yellow color (preferably darker than white varieties), with an ear length of around 20 cm. 2. Blanching and Cooling: The blanching process should be done in boiling water at 100°C for 3 to 4 minutes, or by steaming for 6 to 10 minutes. This helps preserve color, texture, and nutrients. After blanching, it's essential to cool the product quickly to 10°C or below to stop the cooking process and maintain quality. 3. Quick Freezing: The product should be frozen rapidly at -40°C to form small ice crystals, which help retain the texture and freshness of the product. 4. Packaging: Once fully frozen, the product should be packed in high-density polyethylene (HDPE) plastic bags. These bags are durable, moisture-resistant, and provide a good barrier against contamination and freezer burn. 5. Refrigeration: The packaged product must be stored in a cold storage room at a temperature below -18°C to ensure long-term preservation and maintain its quality during distribution and retail. Proper refrigeration also prevents microbial growth and maintains the product’s shelf life. By following these steps carefully, the product can achieve optimal quality, taste, and safety for consumers. Each stage plays a vital role in ensuring that the final product meets the desired standards.

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