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Chinese chestnut preserving process

A technology for storing and preserving chestnuts, which is applied in the fields of fruit and vegetable preservation, food preservation, and preservation of fruits/vegetables through dehydration. It can solve problems such as rot in the storage process, restrict chestnut production, and chestnuts are afraid of heat, so as to reduce the rot rate and the method is simple. Easy to use and practical, reduce the effect of germination

Inactive Publication Date: 2003-02-26
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chestnut is afraid of heat, easy to rot, insects, dehydration, and is seriously troubled by prenatal diseases and insect pests. It is very easy to rot and cause losses during storage.
Generally, the pest and disease rate of stored chestnut is 15-45%, and the weight loss rate is 15-30%. If these problems cannot be solved in time, the production of chestnut will be seriously restricted.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: this chestnut storage and fresh-keeping process mainly comprises the following steps to realize:

[0010] 1) Harvest the raw materials that meet the harvesting standards in time; after the raw materials meet the harvesting standards, harvest them by species, usually from 9:00 am to 11:00 am and after 3:00 pm, when the temperature of the bulbs is relatively low , the surface is dry. Harvesting is uniformly knocked down when 2 / 3-3 / 4 of the bulbs turn yellow.

[0011] 2) Threshing and sweating should be stacked reasonably (combined with fumigation as appropriate); the picked bulbs should be cut open first to check the number of insects and the damage. If the bulbs are more than 3% worm-eaten, the chestnut bulbs can be cooled for 24 hours. Stacking, put fumigant carbon disulfide + carbon tetrachloride in the stack (ratio 1:2, dosage 50-100ml / m 3 ), cover the stacking surface with straw or wheat straw, and then cover it with plastic shed film (without leaks) ...

Embodiment 2

[0015] Embodiment 2: The improved sand storage process is replaced by low temperature combined with membrane tent storage, which mainly includes the following steps:

[0016] 1) Chestnut is treated with 1), 2), 3), and 4) in Example 1.

[0017] 2) Put the chestnuts in polyethylene fresh-keeping bags with a thickness of 0.02-0.05 mm, each 2.5-5 kg ​​is a bag, punch holes in the fresh-keeping bags, the diameter of the holes is 3-10 mm, and the area of ​​the holes accounts for 5-15 mm of the total area. %. The bagged chestnuts are placed on the storage rack in layers, each bag has a certain interval (3 to 5 cm), and the chestnuts are stacked in a shape of 5 to 6 layers. Cover the entire shelf with a layer of polyethylene film tent, and reserve ventilation holes on the plastic film. During storage, use the opening and closing of the ventilation holes and their size to adjust the humidity, so that the relative humidity in the film tent can be kept at 80-90 % or so (the account bu...

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PUM

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Abstract

The Chinese chestnut preserving process includes the following steps: picking chestnut, piling in reasonable mode, threshing and eliminating some water, soaking with pretreating agent, treating with preservative, improved sand preservation or film tent storage, and management in preserving period. To Chinese chestnut with pest, some fumigating step to killing pest in added before threshing and water elimianting step. The said process is simple, practical and suitable for small scale storage without using refrigerating equipment, and can reduce cross infection, increase the disease resistance of Chinese chestnut, reduce water loss during storage and prolong the preserving period of Chinese chestnut.

Description

technical field [0001] The invention relates to the fresh-keeping field, and mainly relates to a chestnut storage and fresh-keeping process. It is suitable for long-term storage and preservation of chestnuts. Background technique [0002] Chestnut is an important famous dried fruit with rich nutrition and high economic value. Its unique chestnut flavor is deeply loved by people. It has always been a bestseller in domestic and foreign trade, and it is also an important way for farmers to improve their planting structure and get rich. my country is the main producer of chestnuts. In recent years, chestnut production has developed rapidly, and the planting area has increased significantly. The price of chestnuts has begun to decline gradually. At the same time, due to the rapid increase in output, it is impossible for chestnuts to be digested and absorbed by the market in a short period of time after harvesting. A large number of chestnuts must be After long-term storage, it w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/02
Inventor 郜海燕陈文烜
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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