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Complex biological preservative formula of citrus fruit chitosan oligosaccharide

A technology of biological preservatives and fruit shells, which is applied in the field of citrus fruit chitosan oligosaccharide compound biological preservative formulations, can solve the problems of great harm to human health, large environmental pollution, and high residues of chemical fungicides, so as to reduce residues and prolong storage long-term, low-cost effect

Inactive Publication Date: 2009-08-26
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of citrus fruit chitosan oligosaccharide compound biological antistaling agent formula, to control the disease of citrus fruit storage period, delay fruit senility, and solve the high residual chemical fungicide of citrus fruit preservatives, environmental impact Pollution, great harm to human health and other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: first use the acetic acid solution that volume ratio concentration is 0.5% as solvent preparation mass volume ratio concentration is 1.25% chitosan, mass volume ratio concentration is 1.25% chitosan, mass volume ratio concentration is 6% calcium chloride mixed solution, and then adjust the pH value to 5.8 with a concentration of 0.1mol / L (w / v) sodium hydroxide; harvest mature fresh navel oranges, after selection and grading, soak in the composite preservative for 1 minute, remove , dried, packaged, and stored and transported according to conventional methods; after storage for 2 months under suitable temperature conditions, the incidence of penicillium in fruits was reduced by 30-60% compared with untreated ones, and the fresh-keeping period of fruits was extended by 10-20 sky.

Embodiment 2

[0016] Embodiment 2: first use the acetic acid solution that volume ratio concentration is 0.5% as solvent preparation mass volume ratio concentration is 1.25% chitosan, mass volume ratio concentration is 1.25% chitosan, mass volume ratio concentration is 6% calcium chloride The mixed solution of 0.1mol / L (w / v) sodium hydroxide is then used to adjust the pH value to 5.9; harvest ripe fresh tangerines, after selection and grading, soak in the composite preservative for 1 minute, and remove out, dried, packaged, and stored and transported according to conventional methods; after storage for 2 months under suitable temperature conditions, the incidence of green mold of the fruit was reduced by 30-50% compared with untreated ones, and the fresh-keeping period of the fruit was extended by 10- 20 days.

Embodiment 3

[0017] Embodiment 3: first use the acetic acid solution that volume ratio concentration is 0.5% as solvent preparation mass volume ratio concentration is 1.25% chitosan, mass volume ratio concentration is 1.25% chitosan, mass volume ratio concentration is 6% calcium chloride The mixed solution, and then adjust the pH value to 6 with a concentration of 0.1mol / L (w / v) sodium hydroxide; harvest ripe fresh ponkans, after selection and classification, soak in the composite preservative for 1 minute, remove , dried, packaged, and stored and transported according to conventional methods; after 2 months of storage under suitable temperature conditions, the incidence of anthracnose in fruits was reduced by 20-40% compared with untreated ones, and the fresh-keeping period of fruits was extended by 10-20 days .

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PUM

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Abstract

The present invention provides a complex biological preservative formula of citrus fruit chitosan oligosaccharide, wherein the complex biological preservative of citrus fruit chitosan oligosaccharide is composed of the following components: 1.25% of chitosan oligosaccharide in mass-volume ratio, 1.25% of chitosan in mass-volume ratio, 6% of calcium chloride in mass-volume ratio and 0.5% of acetic acid solution in mass-volume ratio. After the citrus fruit is immersed in the complex biological preservative of chitosan oligosaccharide for processing, the generation degree of disaster after the picking of citrus fruit can be remarkably reduced. The storage period and shelf life of fruit can be prolonged. Furthermore the residue of chemical agent can be reduced and the using is safe. Besides, the method of the invention has the advantages of simple method, low cost and easy application generalization.

Description

technology field. [0001] The invention relates to the technical field of fruit preservation, in particular to a formula of citrus fruit chitooligosaccharide composite biological preservation agent. Background technique [0002] Citrus fruits are the largest fruit in the world and the second largest fruit in my country. They occupy a very important position in China's agricultural economy and have become the leading industry in many areas. However, compared with the fast-growing citrus planting industry, the post-harvest technology research and industrialization development of citrus fresh fruit is relatively slow, causing a large number of fruit to rot every year. At present, benzimidazole and substituted benzene fungicides are commonly used in various citrus producing areas. Due to continuous use for many years, pathogenic bacteria develop drug resistance and the control effect decreases. On the one hand, with the improvement of living standards, people gradually pay more ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/153A23B7/154A23B7/157
Inventor 曾凯芳黄艳周玉翔明建邓丽莉
Owner SOUTHWEST UNIVERSITY
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