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Paint for fruit and vegetable fresh-keeping thermal insulation paper box and preparation method thereof

A fruit and vegetable fresh-keeping and coating technology, which is applied in the direction of paper coating, coating, paper, etc., can solve the problems of poor fresh-keeping effect, and achieve the effects of improving absorption and decomposition efficiency, good anti-corrosion effect, and good fresh-keeping performance

Active Publication Date: 2016-05-04
HUBEI HENGDA PACKING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem of poor fresh-keeping effect in the prior art, and provide a non-toxic and harmless coating for fruit and vegetable fresh-keeping and thermal insulation cartons that can effectively improve the fresh-keeping effect and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] A method for preparing a coating for fruit and vegetable fresh-keeping and thermal insulation cartons, comprising the following steps in sequence:

[0024] Preparation of adsorbent: mix potassium permanganate, alumina and water in proportion, then add zeolite powder, soak and stir for 0.5-1 hour to make zeolite powder fully adsorb potassium permanganate and alumina to obtain adsorbent;

[0025] Preparation of paint: first mix oxidized cornstarch and water evenly in proportion, then add adsorbent and preservative to mix, then heat up to 78-83°C and stir until the system becomes a paste, then add viscosity modifier and stir evenly to obtain fruits and vegetables Coatings for fresh-keeping and thermal insulation cartons.

[0026] In the preparation step of the coating, the pH of the system is adjusted to 4.0 after adding α-amylase and stirring.

[0027] In the preparation step of the coating, sodium hydroxide and hydrochloric acid are selected to adjust the pH of the syst...

Embodiment 1

[0036] A coating for fruit and vegetable fresh-keeping and thermal insulation cartons, the raw material composition and weight ratio of the coating are: oxidized corn starch 10, water 40, adsorbent 0.5, sodium benzoate 0.1, α-amylase 0.006, wherein the adsorbent It is zeolite powder adsorbed with potassium permanganate and alumina, and its raw material composition and weight ratio are: potassium permanganate 5, alumina 0.4, water 80, zeolite powder 120;

[0037] When preparing, follow the steps below:

[0038] Preparation of adsorbent: mix potassium permanganate, alumina and water in proportion, add zeolite powder, soak and stir for 0.5h so that the zeolite powder can fully adsorb potassium permanganate and alumina to obtain adsorbent;

[0039] Preparation of paint: firstly mix oxidized cornstarch and water evenly in proportion, then add adsorbent and sodium benzoate to mix, then raise the temperature to 83°C and stir until the system becomes a paste, then add α-amylase and st...

Embodiment 2

[0041] Step is with embodiment 1, and difference is:

[0042] The raw material composition and weight ratio of the coating are: oxidized corn starch 20, water 80, adsorbent 1, sodium benzoate 0.2, α-amylase 0.008, the raw material composition and weight ratio of the adsorbent are: potassium permanganate 7. Aluminum oxide 0.6, water 100, zeolite powder 160.

[0043] In the preparation step of the adsorbent, the soaking and stirring time is 1h;

[0044] In the preparation step of the coating, the temperature is raised to 80° C. and stirred until the system becomes a paste.

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Abstract

The invention discloses a paint for a fruit and vegetable fresh-keeping thermal insulation paper box and a preparation method thereof. The paint is composed of the following raw materials in parts by weight: 10 to 20 parts of oxidized corn starch, 40 to 80 parts of water, 0.5 to 1 part of adsorbent, 0.1 to 0.2 part of antiseptic, and 0.006 to 0.008 part of viscosity regulator, wherein the adsorbent is zeolite powder that carries with potassium permanganate and alumina, and is composed of the following raw materials in parts by weight: 5 to 7 parts of potassium permanganate, 0.4 to 0.6 part of alumina, 80 to 100 parts of water, and 120 to 160 parts of zeolite powder. The paint is prepared by the following steps: mixing potassium permanganate, alumina, and water according to a certain ratio, then adding zeolite, soaking, stirring to obtain the adsorbent, mixing oxidized corn starch and water according to a certain ratio, then adding the adsorbent and antiseptic, heating the system to a temperature of 78 to 83 DEG C until the system is converted into paste, finally adding an viscosity regulator, and evenly stirring. The fresh keeping effect is prominently improved by the paint.

Description

technical field [0001] The invention relates to a fresh-keeping coating, in particular to a coating for fruit and vegetable fresh-keeping and thermal insulation cartons and a preparation method thereof. Background technique [0002] Fruits and vegetables contain various nutrients needed by the human body. Fresh fruits and vegetables are very important for the human body to maintain normal physiological activities. However, due to the conflicts between the regional and seasonality of fruit and vegetable production and consumer demand, it is impossible for most consumers to taste fresh fruits in the first place. How to maintain the freshness of fruits and vegetables during storage and transportation has become a key issue that people pay more and more attention to. Paper packaging products rank first among the major products of the packaging industry and occupy a large proportion. In our country, its output value accounts for as much as 40% of the total output value of the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/28D21H19/54D21H19/44
CPCD21H19/44D21H19/54D21H21/28
Inventor 陈智敏
Owner HUBEI HENGDA PACKING CO LTD
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