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Chitosan antistaling agent for longan and preparation method thereof

A technology of chitosan and antistaling agent, which is applied in the field of chitosan longan antistaling agent and its preparation, can solve the problems of longan rot, backward preservation technology, and sales difficulties, and achieve the goal of strengthening chitosan film formation and protecting the color of fruit peel Effect

Inactive Publication Date: 2011-04-20
FUJIAN AGRI & FORESTRY UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

This has caused most of the longan in my country to be limited to domestic sales at the present stage, and even only in the local area. The sales price of longan is low, which has seriously affected the economic interests of fruit farmers, especially in the vast rural areas. The fresh-keeping technology in the world is backward, causing a large number of longans to rot in the process of storage, transportation and sales

Method used

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  • Chitosan antistaling agent for longan and preparation method thereof

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Embodiment 1

[0025] Embodiment one, the preparation method of chitosan longan preservative

[0026] Weigh 1g of vitamin C, 0.5g of zinc chloride, and 0.5g of thiourea and dissolve them in 500ml of distilled water, then add 10ml of glacial acetic acid and 20g of chitosan with a deacetylation degree of 95%, stir until the medicine is fully dissolved, and distilled water to volume To 1L, it is chitosan longan preservative.

[0027] The final concentration that each raw material uses in chitosan longan preservative of the present invention is as follows:

[0028] Raw material Final concentration (%)

[0029] Chitosan with 95% deacetylation degree 2

[0030] Glacial acetic acid 1

[0031] Vitamin C 0.1

[0032] Zinc chloride 0.05

[0033] Thiourea 0.05

[0034] the rest is water

[0035] Prepare chitosan longan preservative according to the amount of preservative 12-20ml for 1kg of longan, soak fresh longan in chitosan longan preservative for 10-15min, and then spread it in the environme...

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Abstract

The invention discloses a chitosan longan preservative, which consists of chitosan with a deacetylation degree of 95 percent, glacial acetic acid, vitamin C, zinc chloride, thiourea and water. The preservative has no toxicity and is safe to human bodies, animals and plants, the preservation temperature is between 10 and 15 DEG C, and the preservation time of longans treated by the preservative can reach 80 days. The preservation does not require quite low environmental temperature, so the preservation can greatly reduce energy consumption compared with the prior preservation method, nutritional indicators of the longans after the preservation basically keep unchanged, and the quality and flavor of fruits are purer. The preservative can effectively prolong the selling time of the longans in the market, and greatly improve the economical value of the longans.

Description

technical field [0001] The invention relates to a fruit fresh-keeping agent and a preparation method thereof, in particular to a chitosan longan fresh-keeping agent and a preparation method thereof. Background technique [0002] my country is an important longan main producing country in the world, and the main production areas are in Guangdong, Fujian, Guangxi, Taiwan and other provinces (regions). With the continuous expansion of the cultivated area, the increase of the production area and the increase of the per unit yield year by year, the total output has also increased rapidly. Longan is a characteristic fruit of our country, and there is a large room for development in the international market. The development of the longan industry can further open up the international market, increase export earnings, improve the economic benefits of the longan industry, increase the economic income of farmers, and promote the development of my country's rural economy. . [0003] L...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23B7/154A23B7/157A23B7/16
Inventor 何海斌王海斌陈荣山陆锦池刘长辉郭徐魁
Owner FUJIAN AGRI & FORESTRY UNIV
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