CN102524372A - Grape preservative - Google Patents

Abstract

The invention provides a grape preservative. The preservative comprises the following components: sorbic acid, tartaric acid, citric acid, chitin and lignin. The invention has the characteristics that: the preparation method is simple, the preservative is low in cost, is convenient to operate when used and has a long release period and a uniform effect and the like.

Description

Antistaling agent for grape

Technical field

The invention belongs to the food preservative technology field, provide a kind of high-quality lasting antistaling agent for grape.

Technical background

Along with development of science and technology, the raising gradually of people's living standard, people strengthen the demand of the fruit that the different regions Various Seasonal is produced gradually, but grapes etc. are perishable, and the fruit freshness preserving phase is short, is difficult for storing.And the fresh-keeping and storing of the fruit that people store difficulties such as grapes has proposed increasingly high requirement with transportation.To this, many inventors provide a lot of effectively method for making and the usages of long-acting preservative.

Providing a kind of like Chinese patent " CN1262873 antistaling agent for grape and production method " is pulverized below 100 orders by sodium pyrosulfite, adhesive, sustained release agent, excipient; Mixing, fusion, granulation, compressing tablet, the antistaling agent production method of packing with paper laminated film or polybag again.Chinese patent " antistaling tablet for grapes that one kind of CN1620876 adopts the direct compression of full-powder method to produce " provides a kind of and has been ground into more than 60 orders by pyrosulfite or bisulfites, slow release framework material, the excipient that is suitable for direct tablet compressing; After full powder mixes, the antistaling tablet that uses the tablet press machine direct tablet compressing to get final product.Chinese patent " the CN02131054.8 lignin is really dredged preservative film and preservation method thereof " provides a kind of lignin really to dredge preservative film and preservation method thereof; Process lignin liquor earlier; Be mixed into film forming agent with crosslinking agent, shitosan, collagen again; Spraying or infiltration are coated in the fruit hydrophobic surface again, form preservative film, are fit to be used with apparatus of oxygen supply in the transportation.

Prior art is having certain progress aspect normal temperature or preservation by low temperature, long acting fresh-keeping, the transportation fresh-retaining really.But also come with some shortcomings, be mainly: 1, the release period of antistaling agent or preservative film is shorter, and preservation is inhomogeneous, is difficult in order to be effective; 2, antistaling agent or preservative film method for making complicacy are cumbersome; 3, it is higher to manufacture cost, and raw material sources are narrow; 4, some raw material has harm to human body.

Summary of the invention

Based on above understanding, the purpose of this invention is to provide a kind of long-acting antistaling agent for grape, this antistaling agent method for making is simple, with low cost, easy to operate when using, release period is long, effect is even.

For achieving the above object, the present invention is based on following technical scheme: 1, add chitin, have clarification, purify, eliminate the unusual smell, stop effect such as ascorbic oxidative degradation; 2, add lignin, construct strong, sealing good framework structure, make medicine evenly to discharge lentamente, keep even long-period freshness preserving, make fruit long-period freshness preservings such as grape for other medicine; 3, material source is wide, and is with low cost; 4, do not discharge any gas that is pernicious to people, can be for a long time and grape mix and put together and do not produce any negative interaction.

The mass fraction of each component does among the present invention

Sorbic acid 30～60%

Tartaric acid 5～10%

Potassium citrate 5～10%

Chitin 15～30%

Lignin 10～30%

The specific embodiment

Below be its a kind of embodiment, each constituent mass umber does

Sorbic acid 40%

Tartaric acid 10%

Potassium citrate 10%

Chitin 25%

Lignin 15%

Manufacturing approach is: earlier sorbic acid, tartaric acid and potassium citrate are evenly mixed in normal temperature, gains and chitin are mixed in 65 ℃ again, back adding lignin evenly mixes, and in nitrogen, is cooled to normal temperature and promptly gets.

Claims (2)

1. an antistaling agent for grape is characterized in that, each component materials and mass fraction thereof are:

Sorbic acid 30～60%

Tartaric acid 5～10%

Potassium citrate 5～10%

Chitin 15～30%

Lignin 10～30%

2. antistaling agent for grape as claimed in claim 1 is characterized in that, its component materials and mass fraction thereof are:

Sorbic acid 40%

Tartaric acid 10%

Potassium citrate 10%

Chitin 25%

Lignin 15%