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Pre-cooling domestication method for fruits and vegetables and refrigeration equipment

A technology of pre-cooling domestication and refrigeration equipment, which is applied in household refrigeration equipment, lighting and heating equipment, and preservation of fruits/vegetables through freezing/refrigeration, etc. It can solve the effect of not achieving domestication, accelerate the respiratory loss of peaches, and "exercise" Long time and other problems, to achieve the effect of reducing loss, avoiding cold damage, and low breathing intensity

Active Publication Date: 2014-12-24
NINGBO ACAD OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the storage method provided by this invention is only a transitional pre-cooling at a specific temperature for a period of time, and the effect of domestication cannot be achieved. influences

Method used

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  • Pre-cooling domestication method for fruits and vegetables and refrigeration equipment
  • Pre-cooling domestication method for fruits and vegetables and refrigeration equipment
  • Pre-cooling domestication method for fruits and vegetables and refrigeration equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Refrigeration equipment includes direct refrigeration system and indirect refrigeration system. The direct refrigeration system is the same as the existing cold storage, that is, after the compressor cools the refrigerant, it directly cools the cold storage; while the indirect refrigeration system is as follows: figure 1 As shown, including the pre-cooler 12, the top of the side wall of the pre-cooler 12 is provided with a cooling fan 10, and the top of the pre-cooler 12 is provided with a cooling pipe 11, and the pre-cooler 12 is provided with a refrigerant channel and a refrigerant Channel and evaporator 5. In this embodiment, the evaporator 5 is specifically a plate heat exchanger, and the refrigerant channel communicates with the first side flow channel of the plate heat exchanger to form a circuit, that is, the refrigerant channel is sequentially connected with compressors. Machine, condenser 2, liquid reservoir 3 and throttling element 4, the throttling element...

Embodiment 2

[0056] (1) refrigeration equipment: as embodiment one.

[0057] (2) Test materials: "Ninghaibai" white loquat was collected in a town of Ninghai County, Ningbo City on May 25, 2012.

[0058] Experimental treatment: select batches of fruits with consistent maturity and no mechanical damage, put the fruits in a 40×20×10cm tray, and send them to the pre-cooling room for pre-cooling within 1 hour after harvesting. 1 )8.0℃, lower limit of constant temperature (i.e. target temperature T 3 ) 2.0°C, pre-cooling time t: 96h, constant cooling time gradient 60min, other settings are the same as Case 1. After pre-cooling, pack with 0.02mmPE plastic wrap and store at storage temperature T 2 In the cold storage at 2-2.5°C, the ordinary cold storage is used as a comparison, and the parameter is 2-3°C. To investigate the fresh-keeping effect of white loquat in cold storage.

[0059] (3) Test results:

[0060] (1) Pre-cooling and acclimatization reduces the degree of fruit lignification ...

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Abstract

The invention discloses a pre-cooling domestication method for fruits and vegetables. According to the pre-cooling domestication method, a pre-cooling temperature reducing curve is pre-set on a PLC which controls refrigeration equipment to reduce the temperature according to the pre-cooling temperature reducing curve. The invention further discloses the refrigeration equipment applied to the pre-cooling domestication method for the fruits and the vegetables. Compared with the prior art, the pre-cooling domestication method has a scientific temperature reducing manner and the domesticated fruits and vegetables can keep good quality; and phenomena of cold damages and the like can be effectively prevented.

Description

technical field [0001] The invention relates to the field of storage and processing of agricultural products, in particular to a method for pre-cooling and domestication of harvested fruits and vegetables, and also relates to a refrigeration device used in the method for pre-cooling and domestication. Background technique [0002] Pre-cooling refers to the process in which food rapidly drops from the initial temperature (about 25-30°C) to the required refrigeration temperature (0°C-15°C). Pre-cooling is an effective measure to quickly remove field heat, inhibit respiration, maintain the freshness of fruits and vegetables, and extend the storage period. Practice has proved that the temperature of pre-cooled fruits and vegetables is uniform, the breathing intensity is small, and the storage quality can be maintained. [0003] The cooling process and cooling time of ordinary pre-cooling are difficult to automatically control, and it is easy to cause damage to fruit and vegetab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/04F25D13/00
Inventor 凌建刚孙学良朱麟陈绍慧张堃康孟利李江阔尚海涛俞静芬林旭东
Owner NINGBO ACAD OF AGRI SCI
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