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Method for keeping fruit fresh

A fresh-keeping method and technology for fruits, which are applied in the fields of fruit and vegetable preservation, fruit/vegetable preservation through freezing/refrigeration, food preservation, etc., can solve the problems such as no fresh-keeping methods have been reported, and achieve easy popularization and application, inhibition of ethylene synthesis, and convenient operation Effect

Inactive Publication Date: 2019-11-12
GUIYANG UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Though present fresh-keeping method obtains certain effect, existing fruit fresh-keeping method all is to carry out the spraying of fresh-keeping liquid etc. after the fruit is plucked, and the fresh-keeping method that carries out pretreatment before picking has no report, in addition, salicylic acid, The joint use of gibberellin and melatonin has not been reported in the field of fruit preservation

Method used

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Examples

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Embodiment 1

[0025] A method for preserving fruit, comprising the following steps:

[0026] A kind of fresh-keeping method of fruit, is to spray the fruit with the compound liquid that contains melatonin, gibberellin and salicylic acid before the fruit adopts, and wherein melatonin concentration is 100 μ mol / L; 100μg / L; the salicylic acidity is 500μg / L. After harvest, the fruit is transferred to a closed space, and a certain volume ratio of liquid nitrogen is used for short-term fumigation. The volume ratio of liquid nitrogen to the closed space is 1:3000, and the fumigation time is 10 minutes , and then immediately transferred to a thickness of 20μm and an air permeability of 6000cm 3 / (m 2 ·24h·0.1Mpa) in the self-generating modified atmosphere packaging for low-temperature storage, the storage temperature is 7°C, and the relative humidity in the closed space is above 85%.

Embodiment 2

[0028] A method for preserving fruit, comprising the following steps:

[0029] A kind of fresh-keeping method of fruit, is to spray the fruit with the compound liquid that contains melatonin, gibberellin and salicylic acid before the fruit adopts, and wherein melatonin concentration is 300 μ mol / L; 10μg / L; the salicylic acidity is 200μg / L. After harvest, the fruit is transferred to a closed space, and a certain volume ratio of liquid nitrogen is used for short-term fumigation. The volume ratio of liquid nitrogen to the closed space is 1:1000, and the fumigation time is 15 minutes , and then immediately transferred to a thickness of 40μm and an air permeability of 5300cm 3 / (m 2 ·24h·0.1Mpa) in the self-generating modified atmosphere packaging for low-temperature storage, the storage temperature is 1°C, and the relative humidity in the closed space is above 85%.

Embodiment 3

[0031] A method for preserving fruit, comprising the following steps:

[0032] A kind of fresh-keeping method of fruit, is that fruit is sprayed with the compound solution that contains melatonin, gibberellin and salicylic acid before harvesting, and wherein melatonin concentration is 200 μ mol / L; 50μg / L; the salicylic acidity is 300μg / L. After harvest, the fruit is transferred to a closed space, and a certain volume ratio of liquid nitrogen is used for short-term fumigation. The volume ratio of liquid nitrogen to the closed space is 1:3000, and the fumigation time is 30 minutes , and then immediately transferred to a thickness of 30μm and an air permeability of 5800cm 3 / (m 2 ·24h·0.1Mpa) in the self-generating modified atmosphere packaging for low-temperature storage, the storage temperature is 12°C, and the relative humidity in the closed space is above 85%.

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Abstract

The invention belongs to the technical field of storage and fresh-keeping of agricultural products, in particular relates to a fresh-keeping method of fresh fruits, and specifically relates to a fresh-keeping method of combining a compound solution containing melatonin, gibberellin and salicylic acid with liquid nitrogen fumigation. The steps are as follows: spraying fruits with the compound solution containing melatonin, gibberellin and salicylic acid one day before harvest, transferring the fruits to a closed space for short-time fumigation with liquid nitrogen after harvest, and then immediately transferring the fruits to a spontaneous controlled atmosphere packaging for low temperature storage. The compound solution containing melatonin, gibberellin and salicylic acid is combined withliquid nitrogen fumigation, thus the fresh-keeping method can not only realize sterilization and inhibit the synthesis of ethylene, but also inactivate fruit enzymes, and at the same time, and can achieve fast precooling so as to maintain the storage quality of fruits, achieves the purpose of prolonging the storage period and improving the fresh-keeping effect of fruits; and at the same time, theoperation is convenient, the efficiency is improved, the practicability is high and the application is convenient.

Description

technical field [0001] The invention belongs to the technical field of storage and preservation of agricultural products, and in particular relates to a method for preservation of fruits. Background technique [0002] The stems, leaves, flowers, roots of horticultural plants, as well as vegetables and fruits all have great export potential, and are also very important to the human diet due to their minerals, vitamins, cellulose and other nutritional elements. Storage and preservation technology is the continuation of fruit and vegetable production and an important guarantee for the sustainable development of the fruit and vegetable industry. However, overripe fruits all over the world will cause a large amount of fruit loss every year. In addition, ethylene can induce fruit senescence, and cause the fruit industry to face huge economic losses every year. Therefore, finding an effective fresh-keeping method is an important issue in the development of the fruit industry, so i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/04A23B7/144A23B7/154
CPCA23B7/154A23B7/144A23B7/04
Inventor 巴良杰陈建业罗冬兰曹森杨飒王瑞马超吉宁雷霁卿
Owner GUIYANG UNIV
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