Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A chitosan fresh-keeping method of shallot

A fresh-keeping method, chitosan technology, which is applied in the fields of fruit and vegetable preservation, food preservation, food science, etc., can solve the problems of high cost, ineffective control of harmful substance nitrate, short preservation time, etc., and achieve low cost and delayed sensory Decrease in quality, effect of reducing weight loss rate

Active Publication Date: 2021-12-14
INNER MONGOLIA AGRICULTURAL UNIVERSITY
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preservation time of this method is relatively short, the cost is high, and the harmful substances nitrate and nitrite produced during the storage of the shallots cannot be effectively controlled.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A chitosan fresh-keeping method of shallot
  • A chitosan fresh-keeping method of shallot
  • A chitosan fresh-keeping method of shallot

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Choose complete, no moth-eaten, no damage, remove dead leaves, yellow leaves, and the green onion leaves of the color and luster are 200g of test materials, dissolve chitosan with 0.1% acetic acid in mass concentration, and prepare chitosan with 0.25% mass concentration. sugar solution. Soak the leaves of the shallots to be stored in chitosan solution with a mass concentration of 0.25% for 10 minutes, drain, cover the surface of the shallots with absorbent paper, put them into polyethylene bags with small holes, and store them at 4°C 18d.

Embodiment 2

[0048]Except chitosan solution mass concentration is 0.5%, other are all identical with embodiment 1.

Embodiment 3

[0055] Example 3 Changes in sensory quality during storage of Chitosan treated with different concentrations of chitosan

[0056] The evaluation of the sensory quality of shallots shall be carried out according to Table 1. The shallots stored in the methods described in Examples 1-2 and Comparative Examples 1-3 are evaluated, and the 0, 6, 12, and 18 days of storage of shallots shall be selected. The sensory evaluation results and storage time of each group were plotted as a line graph, such as figure 1 As shown, among them, ck is the comparative example 1, a, b, c, d all indicate the significant difference between the data, the data of the two groups with the same letter have no significant difference, and the data of the two groups with different letters have significant difference.

[0057] The experimental data was analyzed by SPPS 21.0 for analysis of variance, and Duncan’s new multiple difference method was used for comparison between data.

[0058] Table 1 Evaluation c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of food preservation, and provides a chitosan preservation method for shallots. According to the research of the present invention, it is found that a high concentration of chitosan (a mass concentration of more than 1.0%) will instead accelerate the rot and yellowing speed of the shallot and reduce the storage time. After the chitosan solution of suitable concentration (mass concentration of 0.2% to 0.75%) is used to treat the shallot, a semi-permeable membrane with suitable thickness can be formed on the surface of the shallot, which can not only satisfy the normal and slow aerobic respiration of the leaves of the shallot, but also be able to Reduce water evaporation, reduce the invasion of bacteria, so as to achieve the purpose of prolonging the storage time of scallions and prolong the shelf life of scallions. By adopting the method of the invention, the effective storage period of the shallot can be extended to about 15 days, and the fresh-keeping method is safe, reliable, low in cost and easy to operate.

Description

technical field [0001] The invention relates to the technical field of food preservation, in particular to a chitosan preservation method for shallots. Background technique [0002] Modern storage and fresh-keeping technologies mainly include physical fresh-keeping methods, chemical fresh-keeping methods, and biological fresh-keeping methods. Among them, the physical fresh-keeping method is highly technical, and has the problems of large equipment investment and difficult maintenance; while the biological fresh-keeping method has not been widely used due to problems such as difficult identification of drug efficacy, complicated purification technology, and relatively high cost; It has the advantages of low cost, energy saving, and simple use, and is widely used, but the residue of chemical reagents and safety are questioned by consumers. [0003] Sand onion is affected by seasonal restrictions and the high water content of the leaves themselves. During storage and transport...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A23B7/154
CPCA23B7/154
Inventor 张凤兰龙金飞杨忠仁郝丽珍黄修梅张晓艳袁学松
Owner INNER MONGOLIA AGRICULTURAL UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com