Fresh keeping method for vegetables and fruits

A fresh-keeping method and technology for fruits and vegetables, applied in the fields of fruit and vegetable preservation, food preservation, food science, etc., to achieve the effect of good pulp flavor, simple application process and low cost

Inactive Publication Date: 2017-05-31
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on the consideration of the above three factors, the comprehensive integration of pre-harvest and post-harvest fresh-keeping treatment has played a more ideal fresh-keeping effect, and there is no literature report

Method used

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  • Fresh keeping method for vegetables and fruits
  • Fresh keeping method for vegetables and fruits
  • Fresh keeping method for vegetables and fruits

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: the preservation test of oligochitosan and oligochitosan compound preparation to strawberry

[0026] Test crops: Greenhouse strawberry (variety: Qingxiang)

[0027] Pesticide treatment: 140 strawberry plants were selected for experiment. Among them, 60 plants were pre-treated with chitosan oligosaccharides, and the fruits were divided into Ⅰ. Chitosan oligosaccharides pre-harvest treatment group, Ⅱ. Chitosan oligosaccharides pre-harvest treatment + chitosan / chitosan compound preparation post-harvest treatment group, Ⅲ. Chitooligosaccharide preharvest treatment + chitooligosaccharide / sodium alginate compound preparation postharvest treatment group. The 80 fruits without chitosan pretreatment were divided into Ⅳ. control group, Ⅴ. chitosan postharvest treatment group, Ⅵ. chitosan oligosaccharide / chitosan compound preparation postharvest treatment group and Ⅶ. positive Control (thiophazine-methyl 1000ppm) postharvest treatment group. Among them, the prehar...

Embodiment 2

[0036] Embodiment 2: the preservation test of oligochitosan and oligochitosan compound preparation to cherry

[0037] Test crop: orchard cherry tree (variety: red light)

[0038] Pesticide treatment: 7 cherry trees were selected for experiment. Three of them were pre-treated with chitosan oligosaccharides, and the fruits were divided into Ⅰ. Chitosan oligosaccharides pre-harvest treatment group, Ⅱ. Chitosan oligosaccharides pre-harvest treatment + chitosan / chitosan compound preparation post-harvest treatment group Ⅲ. Chitooligosaccharide preharvest treatment + chitooligosaccharide / sodium alginate compound preparation postharvest treatment group. After harvesting, the 4 fruits without chitosan oligosaccharide were divided into IV. control group, V. chitosan postharvest treatment group, VI. chitosan oligosaccharide / chitosan compound preparation postharvest treatment group and VII. positive control group (Thiaphazine-methyl 1000ppm) postharvest treatment group. Among them, the...

Embodiment 3

[0049] Embodiment 3: the fresh-keeping test of oligochitosan and oligochitosan compound preparation to litchi

[0050] Test crop: orchard lychee tree

[0051] Pesticide treatment: Select 7 litchi trees for experiment. Three of them were pre-treated with chitosan oligosaccharides, and the fruits were divided into Ⅰ. Chitosan oligosaccharides pre-harvest treatment group, Ⅱ. Chitosan oligosaccharides pre-harvest treatment + chitosan / chitosan compound preparation post-harvest treatment group Ⅲ. Chitooligosaccharide preharvest treatment + chitooligosaccharide / sodium alginate compound preparation postharvest treatment group. The 4 fruits without chitosan pretreatment were divided into Ⅳ. control group, Ⅴ. chitosan postharvest treatment group, Ⅵ. chitosan oligosaccharide / chitosan compound preparation postharvest treatment group and Ⅶ. positive Control (thiophazine-methyl 1000ppm) postharvest treatment group. Among them, oligochitosan preharvest treatment concentration was 75 μg / mL...

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Abstract

The invention discloses a fresh keeping method for vegetables and fruits. According to the fresh keeping method, treatment with a chitooligosaccharide solution is performed before the harvesting of fruits and vegetables, and treatment is performed with a chitooligosaccharide compound preparation after the harvesting, wherein the mass concentration of the chitooligosaccharide used before the harvesting is 0.05-1 g/L, the deacetylation degree is 50-100%, the average molecular weight is 500-5000 Da, and the treatment is performed 1-3 times before the harvesting. According to the present invention, with the method, the shelf life of fruits and vegetables after harvesting under normal temperature and low temperature storage conditions can be significantly prolonged, and the quality of fruits and vegetables is improved; and the fresh keeping method has advantages of no environmental pollution on treated fruits and treated vegetables, no harm on human health, environmental protection, simple application, easy promotion and application, and the like, and can be widely used for various fruits and vegetables.

Description

technical field [0001] The invention relates to a fresh-keeping method for fruits and vegetables, in particular to a fresh-keeping method for fruits and vegetables which uses chitosan oligosaccharide before harvesting and a chitosan oligosaccharide compound preparation after harvesting. Background technique [0002] Vegetables and fruits are one of the indispensable foods in people's daily life and an important source of nutrition for human beings. However, the production of fruits and vegetables has strong seasonality, regionality, and problems such as easy damage, rot and deterioration after harvest. According to statistics, about 25% of fresh fruits lose their commodity value due to rot and deterioration during storage and transportation. Some perishable fruits Post-harvest rot loss reaches more than 30%. This conflicts with the diversity of people's demand for fruits and vegetables and the urgency of off-season adjustments. The problem of fruit and vegetable storage and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/154
Inventor 尹恒王文霞何艳秋赵小明
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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