Safe freshness-keeping storage and processing method for chestnuts

Abstract

The invention discloses a safe freshness-keeping storage method for chestnuts. The method comprises the following steps of grading the chestnuts by a grading screen when purchasing, purchasing the chestnuts according to grade, and manually removing worm-eaten chestnuts and blackhead chestnuts; making raw materials for being processed into hot chestnut kernels and cans later and raw materials for being processing into chestnut kernels roasted with sugar subjected to quick-freezing treatment; storing the chestnuts undergoing quick-freezing packaging in a refrigerated warehouse at the temperature of 18 DEG C below zero; and when the chestnuts are taken out of the warehouse, removing the hulls of the frozen chestnuts, and further processing the chestnuts into the quick-freezing hot chestnut kernels, chestnut kernel cans or quick-freezing chestnut kernels roasted with sugar. The safe freshness-keeping storage method can achieve the effects that during the quick-freezing storage of the chestnuts, no more chestnuts are spoiled by mildew or worms, little air loss exists due to thin internal membrane bags or temperature fluctuation of the warehouse, the hulls of the chestnuts are slightly air-dried, the yield rate, quality and the like of the chestnuts are not affected, and the freshness-keeping technology is most ideally applied to the southern chestnuts which are poor in quality and not suitable for cold storage, and is a safe and low-loss freshness-keeping storage method, and industrialized production can be realized.

Description

technical field [0001] The invention relates to a method for safe fresh-keeping storage and processing of chestnuts. Background technique [0002] Current situation of traditional industrialized chestnut refrigeration: The traditional industrialized chestnut storage method stores chestnuts in cold storage at 0-2°C. Chestnuts from different origins have different storage resistance, and they are also placed under refrigerated conditions at 0-2°C. Consumption (dehydration), mildew and insects will still increase in varying degrees. Due to the large-scale industrial refrigeration, a moldy chestnut will infect the surrounding chestnuts that are in contact with it, and the insects will crawl out and bite other chestnuts. The proportion of chestnuts will increase. Even in the cold storage at 0-2°C, chestnuts will still have physiological changes and metabolism. Long-term storage will reduce the internal quality of chestnuts, and the quality of deep-processed chestnut products cann...

AI Technical Summary

Problems solved by technology

[0002] Current situation of traditional industrialized chestnut refrigeration: The traditional industrialized chestnut storage method stores chestnuts in cold storage at 0-2°C. Chestnuts from different origins have different storage resistance, and they are also placed under refrigerated conditions at 0-2°C. Consumption (dehydration), mildew and insects will still increase in varying degrees. Due to the large-scale industrial refrigeration, a moldy chestnut will infect the surrounding chestnuts that are in contact with it, and the insects will crawl out and bite other chestnuts. The proportion of chestnuts will increase. Even in the cold storage at 0-2°C, chestnuts will still undergo physiological changes and metabolism. Long-term storage will reduce the internal quality of chestnuts, and the quality of deep-processed chestnut products cannot be guaranteed.

[0003] And other fresh-keeping methods of chestnuts also have defects in various degrees, as: 1. Methods such as sand storage and dry storage are workshop-style storage methods, which cannot realize industrialized production; It is a very safe way to keep chestnuts fresh; 3. Some chestnuts are cut open and soaked in color protection solution, but the wounds injured during the cutting process are very easy to rot, and the residual color protection solution (citric acid, EDTA, etc.) will affect the natural color of chestnuts. Fragrance, thereby reducing the commodity price

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