A lychee and longan fresh-keeping agent with nano-chitosan as main ingredient and method for preparing same

A technology of nano-chitosan and antistaling agent, which is applied in the field of preparation of the fruit antistaling agent, can solve problems such as no detailed reports, and achieve the effect of low production cost

Inactive Publication Date: 2006-12-27
BEIHAI PINGTAI NANO MATERIAL APPL RESCO
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its unique physical and chemical properties, it is currently widely used in the fields of biomedicine, food, daily cosmetics, environmental protection, etc., but there are no detailed reports on its application as a fruit preservative, especially the use of nano-chitosan Applied to fruits, especially the preservation of litchi and longan, there is no similar report

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Recipe: 1 kg of nano-chitosan, 500 kg of water

[0023] Potassium sorbate 1 kg

[0024] Preparation:

[0025] (1) First get the nano-chitosan and stir it evenly to a paste with an equal amount of water to obtain the paste-like nano-chitosan for subsequent use;

[0026] (2) Add 100 times the amount of water to the above-mentioned pasty nano-chitosan and stir evenly until the nano-chitosan is fully and evenly dispersed in water to obtain a nano-chitosan colloidal solution for subsequent use;

[0027] (3) adding sodium hydroxide solution to the nano-chitosan colloidal solution to make the pH value 6.8-7.0, to obtain the nano-chitosan neutralizing colloidal solution for subsequent use;

[0028] (4) Get potassium sorbate in addition and stir together with equal amount of water to paste, then add 30 times of water and stir evenly until potassium sorbate is fully dispersed in water to obtain potassium sorbate solution for subsequent use;

[0029] (5) Mix the above-men...

Embodiment 2

[0034] Recipe: 1 kg of nano-chitosan, 5500 kg of water

[0035] Potassium sorbate 50kg

[0036] The preparation method is the same as in Example 1.

Embodiment 3

[0038] Recipe: 1 kg of nano-chitosan, 1500 kg of water

[0039] Potassium sorbate 15kg

[0040] The preparation method is the same as in Implementation 1.

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 discloses a fresh keeping agent using nano chitosan as main material and its preparation method. Litchi, longan are easy to be dehydrated, which make it difficult for being kept fresh. In the invention chitosan is prepared in nano shape, which promote the dissemination of chitosan in water, while makes full use of its quanta effect and large surface and interfacial effect, makes its possess well film-forming property, hygroscopicity and moisture-keeping property. Applying the agent to litchi and longan, under 2-5 DEG C , the fruit can be kept fresh 40-50 days. Moisture of the fruit only reduce 4.8% afeter 40 days, while sugar increase 2%, fruit husk and pulp flavor keep invariable.

Description

technical field [0001] The invention relates to a preservative for litchi and longan, especially a preservative for litchi and longan mainly composed of nano-chitosan, and also relates to a preparation method of the preservative for fruit. Background technique [0002] The cultivated area and output of litchi and longan in my country rank first in the world, and they are domestically produced bulk fruits. It is widely welcomed and loved by consumers at home and abroad. Litchi peel has a special structure, which is composed of three different structures: exocarp, mesocarp and endocarp. Due to the three special structures of the pericarp, it is easy to lose water under low humidity conditions and cannot be replenished, resulting in 2-3 days of dehydration. That is to say, the lychee is very easy to shrink, harden, brown, deteriorate, deform, and rupture, and form pathological changes, rot, and change of taste under the invasion of germs and microorganisms, until it loses its ...

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
IPC IPC(8): A23B7/153
Inventor 林传泰
Owner BEIHAI PINGTAI NANO MATERIAL APPL RESCO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap