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Fruit and vegetable preservative and preparation method and application method thereof

A fruit and vegetable preservative, wood technology, applied in the direction of fruit and vegetable preservation, application, protection of fruits/vegetables with a protective layer, etc., can solve the problems of waste, restriction of high-value utilization, and single function.

Inactive Publication Date: 2020-10-30
SHANDONG AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although lignocellulosic materials have been widely used, their functions are relatively single, which limits their high-value utilization, and a large number of lignocellulosic materials are not fully utilized and discarded, resulting in a lot of waste

Method used

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  • Fruit and vegetable preservative and preparation method and application method thereof
  • Fruit and vegetable preservative and preparation method and application method thereof
  • Fruit and vegetable preservative and preparation method and application method thereof

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preparation example Construction

[0042] The invention provides a kind of preparation method of fruit and vegetable fresh-keeping agent, comprises the following steps:

[0043] Step S1: selecting woody raw materials and performing drying treatment to obtain dried woody raw materials;

[0044] Step S2: crushing the dried wood raw material to obtain crushed wood raw material;

[0045] Step S3: rotating and grinding the pulverized wood raw material in an alkaline aqueous solution of bleach to obtain a wood fiber suspension;

[0046] Step S4: adding the lignofiber suspension into the oxidizing agent solution, and performing ultrasonic treatment to obtain a wood micro-nano material dispersion;

[0047] Step S5: Filter the woody micro-nano material dispersion, and then wash and dry to obtain a fruit and vegetable preservative.

[0048] The preparation method of above-mentioned fruit and vegetable preservative, preferably:

[0049] The drying treatment method in the step S1 is drying at room temperature or drying ...

Embodiment 1

[0064] This embodiment discloses a fresh-keeping agent for fruits and vegetables, which is prepared by the following steps:

[0065] (1) Get discarded branches and leaves after pruning the apple tree and dry them in an oven at 50°C, then pulverize them to obtain pulverized woody raw materials;

[0066] (2) Add the pulverized woody raw material obtained in (1) into the aqueous solution of sodium hydroxide and sodium persulfate and carry out mechanical angle grinder grinding, the ratio of woody raw material and sodium hydroxide and sodium persulfate and water is 1:4: 1:100, the grinding time is 20h, the grinding speed is 2000 rpm, and the wood fiber suspension is obtained after grinding;

[0067] (3) Add the wood fiber suspension to 1mol / L hydrogen peroxide solution, the volume ratio of hydrogen peroxide to the suspension is 2:1, and perform ultrasonic treatment for 60 minutes to obtain the wood micro-nano material dispersion;

[0068] (4) Filtrate the dispersion of woody micro...

Embodiment 2

[0070] This embodiment discloses a fresh-keeping agent for fruits and vegetables, which is prepared by the following steps:

[0071] (1) Get discarded branches and leaves after pruning pear trees and dry them in an oven at 30° C., then pulverize them to obtain pulverized woody raw materials;

[0072] (2) Add the pulverized woody raw material obtained in (1) into the aqueous solution of sodium hydroxide and sodium persulfate and carry out mechanical angle grinder grinding, the ratio of woody raw material and sodium hydroxide and sodium persulfate and water is 1:6: 4:300, the grinding time is 2h, the grinding speed is 10000 rpm, and the wood fiber suspension is obtained after grinding;

[0073] (3) adding the wood fiber suspension to 0.5 mol / L hydrogen peroxide solution, the volume ratio of hydrogen peroxide to the suspension is 100:1, and performing ultrasonic treatment for 100 minutes to obtain the wood micro-nano material dispersion;

[0074] (4) Filtrate the woody micro-nan...

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Abstract

The invention discloses a fruit and vegetable preservative and a preparation method and application thereof. The preparation method comprises the following steps: selecting a wood raw material, and drying the wood raw material to obtain a dried wood raw material; crushing the dried wood raw material to obtain a crushed wood raw material; carrying out rotary grinding on the crushed wood raw material in an alkaline aqueous solution of a bleaching agent to obtain wood fiber suspension; adding the wood fiber suspension into an oxidant solution, and carrying out ultrasonic treatment to obtain a wood microfiber suspension; filtering the wood fiber suspension, and then cleaning and drying to obtain the fruit and vegetable preservative. The fruit and vegetable preservative is a green edible material; the fiber size is 3-1000 nm, the nano effect is high, water loss on the surfaces of fruits and vegetables can be effectively controlled, the efficient fresh-keeping effect is achieved on the surfaces of the fruits and vegetables, the fruit and vegetable preservative is suitable for fresh keeping of large-batch fruits and vegetables and also suitable for fresh keeping of a small number of fruits and vegetables in families, and the fresh-keeping method is simple.

Description

technical field [0001] The invention relates to the technical field of fruit and vegetable fresh-keeping agents, in particular to a fruit and vegetable fresh-keeping agent and its preparation method and application method. Background technique [0002] With the comprehensive development of society, health issues are getting more and more attention. Fruit and vegetable products play an important role in regulating human nutrition balance and maintaining human health in people's daily life. Therefore, the continuous supply of fruits and vegetables has become an important basic guarantee for society, and the preservation and storage of fruits and vegetables is an important part of the fruit and vegetable product chain. How to economically and efficiently keep fruits and vegetables fresh is a difficult problem that needs to be overcome. [0003] The essence of the fresh-keeping process is to control the water loss on the surface of fruits and vegetables and reduce their cell ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/154A23B7/16A23B7/157
CPCA23B7/154A23B7/157A23B7/16A23V2002/00A23V2300/10A23V2300/48A23V2250/154
Inventor 郝玉金王永旭李媛媛
Owner SHANDONG AGRICULTURAL UNIVERSITY
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