A composite fruit and vegetable fresh-keeping paper and its preparation method and application method

A composite technology for fruit and vegetable preservation, applied in the direction of fruit and vegetable preservation, application, and packaging of fruits/vegetables. Safe, reliable and easy to operate

Active Publication Date: 2018-02-16
俞锃
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both low-temperature storage and controlled-atmosphere storage require certain temperature-controlling-humidity-controlling and gas-generating equipment, which are expensive, relatively high in cost, and inconvenient for fresh-keeping of fruits and vegetables during transportation; chemical or biological agent fresh-keeping methods are not good at controlling drug residues; Solid preservatives have a limited area of ​​action and are suitable for preservation of high-quality fruits and vegetables in small bags or boxes. If they are used in large-packages such as foam boxes and cartons, they cannot completely absorb harmful gases and the preservation effect is not obvious; moisture-proof paper preservation can only remove them. Condensation on fruits and vegetables but unable to suppress or remove harmful gas damage to fruits and vegetables

Method used

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  • A composite fruit and vegetable fresh-keeping paper and its preparation method and application method
  • A composite fruit and vegetable fresh-keeping paper and its preparation method and application method
  • A composite fruit and vegetable fresh-keeping paper and its preparation method and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A composite fruit and vegetable fresh-keeping paper, which is a closed paper sheet formed by arranging non-woven fabrics coated with fresh-keeping powder a and non-woven fabrics coated with fresh-keeping powder b in a breathable film bag and heat-bonded. Its preparation method comprises the following steps:

[0040] Step (1), preparation of fresh-keeping powder a: 100g of nano-scale sepiolite powder, 25g of nano-scale molecular sieve ZSM-5 (silicon-aluminum ratio 25-30), 3g of nano-scale silicon dioxide, 1.5g of nano-scale titanium dioxide, stirring and mixing at room temperature get evenly;

[0041] Prepare fresh-keeping powder b, stir and mix 600 mesh food grade calcium hydroxide powder 100g, food grade white carbon black 2g, fenugreek powder 1g evenly;

[0042] Step (2), add 400g of viscose into preservative powder a, stir while adding, and stir evenly at a speed of 1000 rpm to prepare rubber powder mixed preservative a; then apply the rubber powder mixed preservati...

Embodiment 2

[0048] A composite fruit and vegetable fresh-keeping paper, which is a closed paper sheet formed by arranging non-woven fabrics coated with fresh-keeping powder a and non-woven fabrics coated with fresh-keeping powder b in a breathable film bag and heat-bonded. Its preparation method comprises the following steps:

[0049] Step (1), preparing fresh-keeping powder a: Stir and mix 100 g of nano-scale sepiolite powder, 30 g of nano-scale molecular sieve catalyst, 8 g of nano-scale silicon dioxide, and 2 g of nano-scale titanium dioxide at room temperature;

[0050] Preparing fresh-keeping powder b: Stir and mix 100g of 600-mesh food-grade calcium hydroxide powder, 7g of food-grade white carbon black, and 2g of fenugreek powder;

[0051] Step (2), add 400g of viscose (same as in Example 1) into the preservative powder a, add while stirring, and stir evenly at a speed of 1000 rpm to prepare the rubber powder mixed preservative a; then the rubber powder The mixed preservative a is ...

Embodiment 3

[0056] A composite fruit and vegetable fresh-keeping paper, which is a closed paper sheet formed by arranging non-woven fabrics coated with fresh-keeping powder a and non-woven fabrics coated with fresh-keeping powder b in a breathable film bag and heat-bonded. Its preparation method comprises the following steps:

[0057] Step (1), preparing fresh-keeping powder a: Stir and mix 100 g of nano-scale sepiolite powder, 28 g of nano-scale molecular sieve catalyst, 6 g of nano-scale silicon dioxide, and 2 g of nano-scale titanium dioxide at room temperature to obtain the product;

[0058] Preparing fresh-keeping powder b: Stir and mix 100 g of 600-mesh food-grade calcium hydroxide powder, 5 g of food-grade white carbon black, and 1.5 g of fenugreek powder;

[0059] Step (2), add 400g of viscose (same as in Example 1) into the preservative powder a, add while stirring, and stir evenly at a speed of 1000 rpm to prepare the rubber powder mixed preservative a; then the rubber powder A...

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
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Abstract

The invention discloses composite fruit and vegetable preservative paper. The composite fruit and vegetable preservative paper is a closed paper sheet formed in the manner that a non-woven fabric coated with preservative powder a and a non-woven fabric coated with preservative powder b are arranged in a ventilation film bag to be subjected to heat sealing. The invention further discloses a preparing method for the composite fruit and vegetable preservative paper. The preparing method comprises the steps that the preservative powder a and the preservative powder b are prepared; viscose and the preservative powder a are stirred evenly to manufacture a viscose and powder mixed preservative agent a, the non-woven fabric is coated with the viscose and powder mixed preservative agent a, and drying is conducted; viscose and the preservative powder b are stirred evenly to manufacture a viscose and powder mixed preservative agent b, the non-woven fabric is coated with the viscose and powder mixed preservative agent b, and drying is conducted; and the non-woven fabric coated with the preservative powder a and the non-woven fabric coated with the preservative powder b are flatly laid in the ventilation film bag, and the closed paper sheet is formed through heat sealing. The fruit and vegetable preservative paper can continuously and effectively adsorb ethylene, carbon dioxide and other harmful gas generated in the fruit and vegetable storage and transportation process, fruit and vegetable moisture condensation is controlled, bacterium killing and restraining are achieved, bacterium breeding is reduced, after ripening of fruits and vegetables is restrained, the freshness keeping function is achieved, and the composite fruit and vegetable preservative paper can be applied to freshness keeping of the fruits and vegetables.

Description

technical field [0001] The invention belongs to the technical field of fresh-keeping of fruits and vegetables, and in particular relates to a composite type of fresh-keeping paper for fruits and vegetables. Background technique [0002] At present, the fresh-keeping methods of fruits and vegetables mainly include low-temperature storage, controlled-atmosphere storage, soaking in chemical agents or biological agents, adding preservatives in small solid packages, and using moisture-proof paper. Both low-temperature storage and controlled-atmosphere storage require certain temperature-controlling-humidity-controlling and gas-generating equipment, which are expensive, relatively high in cost, and inconvenient for fresh-keeping of fruits and vegetables during transportation; chemical or biological agent fresh-keeping methods are not good at controlling drug residues; Solid preservatives have a limited area of ​​action and are suitable for preservation of high-quality fruits and v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D65/42B65D85/34A23B7/154A23B7/157B32B5/02B32B5/26B32B7/08B32B33/00B32B37/06B32B37/10
CPCA23B7/154A23B7/157B32B5/022B32B5/26B32B7/08B32B33/00B32B37/06B32B37/10B32B2255/02B32B2307/7145B32B2307/724B32B2439/00B65D65/42B65D85/34
Inventor 张伟霞俞锃
Owner 俞锃
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