CN1372800A

CN1372800A - Nano antistaling agent for fruit and vegetable and its preparing process

Info

Publication number: CN1372800A
Application number: CN 02108636
Authority: CN
Inventors: 汪景山
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-04
Filing date: 2002-04-04
Publication date: 2002-10-09

Abstract

A nano antistaling agent for fruit and vegetable is prepared from non-toxic antibacterial nano material, auxiliary material and carrier medium through mixing and high-speed stirring. It has high antistaling effect.

Description

Nanometer fruits and vegetables antistaling agent and preparation method thereof

The present invention relates to a kind of nanometer fruits and vegetables antistaling agent, comprise various smears, spray, aerosol, platymiscium antistaling agent class.

Various fruit, vegetables are that human survival is indispensable must food, are the achievements of human labour and wisdom over 10000000 year.More than its kind, output is big, in the mankind's food, also can be counted on one's fingers, but because the difference between the place of production and the land used and gathering and edible time different, various fruit, vegetables all will be sold and wait for that consuming four-stage just can finish consumption through gathering, transport, waiting for.In this process, there is a large amount of products to rot unavoidably, according to update, " the annual fruit and vegetable of China rot to surpass 8,000 ten thousand tons, and the economic loss that causes thus reaches 75,000,000,000 yuan, accounts for more than 30% of the whole industry output value " (seeing " Chinese food newspaper ").How to prolong the freshness date of fruits and vegetables, this is problem that urgency is to be solved in Chinese national economy and the people's lives.

Purpose of the present invention is exactly that a kind of inexpensive efficient fruit and vegetable fresh-keeping agent will be provided for the producer, operator and the consumer of various fruits and vegetables, so as to prolonging the freshness date of fruits and vegetables, reduces the rotten loss that already causes to fruits and vegetables.

The object of the present invention is achieved like this: a kind of nanometer fruits and vegetables antistaling agent, comprise smears, spray, aerosol, it is characterized in that: constitute by nontoxic nano anti-biotic material and corresponding auxiliary material and mounting medium, be with after auxiliary material fully mixes with the nano anti-biotic material after the modification, by high-speed stirred it is dispersed in the mounting medium, or by high-speed stirred, nano anti-biotic material and auxiliary material be scattered in the mounting medium respectively equably make.

Can make various fruits and vegetables long-period freshness preservings after adopting the present invention, reduce the loss that the cause and effect vegetables rot to bring, make the vast fruits and vegetables producer, operator and the out and out benefit of consumer, and can improve the competitiveness of China's fruit and vegetable food, we has opened the gate for the fruit and vegetable food of China goes to the world.

Below in conjunction with embodiment details of the present invention is specified:

One, the fruit and vegetable fresh-keeping agent that contains nano-antibacterial particle and wax class auxiliary material

Raw material components

1.5 parts of nano titanium oxides (modification)

121 parts of Brazil waxs

37 parts of oleic acid

22 parts of triethanolamines

48 parts in paraffin

56 parts in water

Preparation technology

Triethanolamine is water-soluble, add nano titanium oxide, high-speed stirred is dispersed in the triethanolamine aqueous solution nano titanium oxide, and is heated to 90 ℃.Babassu oil and oleic acid are mixed, be heated to 90 ℃, stir.With heating paraffin to 90 ℃, preceding two kinds of mixtures are mixed, high-speed stirred evenly after, add heated paraffin, under agitation add 90 ℃ hot water again, be diluted to the concentration that needs.

This antistaling agent is a fruit freshness preserving coating, can be stale after fruit is put for a long time because of dehydration, and coat this coating and not only can prevent the fruit dehydration, can prevent that also fruit from rotting.

Two, the antistaling agent that contains nano-antibacterial particle and shitosan class auxiliary material

Prescription one

Nano titanium oxide (modification) 0.1-1%

Shitosan (the deacetylation degree is more than 80%) 0.1-1%

Tartaric acid (99%) 10%

Distilled water 89.5%

Prescription two

Nano titanium oxide 0.1-0.5%

Shitosan 19-20%

Citric acid 40%

Distilled water 40%

Prescription three

Nano titanium oxide 0.1-0.5%

Shitosan 0.1-0.5%

Acetic acid 15%

Distilled water 84.5%

Prescription four

Nano titanium oxide 0.1-1%

Shitosan 29-29.9%

Acetic acid 20%

Polyvinyl acetate emulsion 30%

Distilled water 20%

Preparation

Nano titanium oxide mixed with micronizer with the auxiliary material shitosan carry out ultramicro grinding, nano titanium oxide is fully disperseed.In prescription one, two, three, tartaric acid, citric acid, acetic acid is soluble in water respectively, the mixture of nano titanium oxide and shitosan is constantly added above-mentioned three kinds of solution in stirring---in the mounting medium, making it to be uniformly dispersed by high-speed stirred gets final product.

At prescription four, the antistaling agent that will obtain by last method slowly makes an addition in the polyvinyl acetate emulsion with thread under high-speed stirred, fully stirring, emulsification, mixes and can bottle.

Using method

With above-mentioned antistaling agent, can be sprayed at respectively on the various fruits and vegetables such as apple, citrus, banana, cherry, tomato, long eggplant, watermelon, this product can make fruit and vegetable surfaces form one deck glossiness and film, and improves the bright-coloured degree and the commodity value of fruits and vegetables, and filming of forming is nontoxic, is difficult for moldy metamorphism.

Annotate: the cause and effect vegetables place of production and kind difference, need make the small lot spray test before handling, and ratio can be adjusted suitably between each composition, also can only add water and not add acid.

Three, nanometer eggs preservative film spray liniment

Be a kind ofly to contain nano-antibacterial particle and single acetyl mono fatty acid glyceride or the two fat glycerides of single acetyl are the eggs antistaling agent of main component.Be that the nano titanium oxide after the modification (lipophilic) is slowly added in single acetyl mono fatty acid glyceride or the single acetyl bis-fatty acid glyceride, after by high-speed stirred nano titanium oxide evenly being disperseed, add suitable quantity of water again, make it to make after dissolving, dispersion and the emulsification.The addition of nano titanium oxide can be adjusted between 0.1-1%.

This nanometer eggs spray liniment can make eggs long preservation under high temperature season or low temperature, the about 0.005-0.2 gram of the quantity for spray of each egg.

Claims

1, a kind of nanometer fruits and vegetables antistaling agent can be smears or spray, aerosol, it is characterized in that being made up of nano anti-biotic material and auxiliary material and mounting medium.

2, as the preparation method of the said nanometer fruits and vegetables antistaling agent of claim 1, it is characterized in that the nano anti-biotic material after the modification with after auxiliary material fully mixes, by high-speed stirred it is dispersed in the mounting medium, also can nano anti-biotic material and auxiliary material be scattered in the mounting medium respectively and makes by high-speed stirred.