Technical points of carrot dry processing

First, the production process includes washing, cutting, blanching, drying, and packaging. Second, the production of high-quality carrot products involves several key steps. 1. **Material Selection**: The raw materials should be fresh, with a bright orange-red color, medium size, smooth skin, minimal roots, blunt ends, no pests, no mechanical damage, and no signs of freezing or frost. They should not have any obvious pulp parts, be fully ripe without lignification, and contain at least 11% dry matter, 4% sugar content, and no more than 15% waste. These criteria ensure the best quality for the final product. 2. **Washing**: After removing the leaf clusters and roots with a knife, the carrots are thoroughly washed in clean water to remove dirt and impurities, followed by peeling to prepare them for further processing. 3. **Cutting**: The peeled carrots are then cut into strips, slices, or cubes based on the desired shape and size for the final product. 4. **Blanching**: This step is crucial to enhance the color, soften the texture, eliminate any off-odors, and prevent browning. The carrots are briefly immersed in boiling water or steam for 5–8 minutes. Once softened, they are removed and drained. In some cases, a sulfur treatment may be applied by spraying a 0.2%–1% sulfite solution to preserve color and quality. 5. **Drying**: The blanched carrots are spread evenly on baking trays or wire racks at a rate of 5–6 kg per square meter and placed in a drying chamber. The temperature is maintained between 65°C and 75°C for approximately 6–7 hours until the moisture content is reduced to an appropriate level. 6. **Packaging**: Once dried, the carrots are immediately packed into food-grade plastic bags and sealed tightly to prevent air exposure and moisture absorption. They are then placed into cartons or sacks for storage and transportation. Third, important considerations during the process include: 1. During packaging, all foreign particles must be removed, and the moisture content should not exceed 5%–8% to maintain quality and shelf life. 2. It is essential to complete the entire process from raw material to finished product within the same day to avoid spoilage and ensure freshness. By following these detailed steps and maintaining strict quality control, the resulting carrot products will be safe, nutritious, and of high market value.

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