Transportation type preservative paper for red grapes

A technology of red grapes and fresh-keeping paper, which is applied in the preservation of fruits and vegetables, food preservation, protection of fruits/vegetables with a protective layer, etc. Improve grape export sales and other issues, to reduce SO2 damage to red grapes, prolong the release cycle, improve economic added value and market competitiveness

Active Publication Date: 2010-01-20
XINJIANG UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the fresh-keeping paper used for grape transportation in Xinjiang is mainly made of kraft paper and plastic paper for one-time packaging of pyrosulfites. Although this kind of fresh-keeping paper reduces SO 2 The release rate and release amount, but due to the red grapes on SO 2 The gas concentration is more sensitive, so there is still SO 2 Excessive concentration in the early stage will damage the color and taste of the red grape skin and other shortcomings, and the SO in the red grape pulp 2 The residual amount is higher than the international standard allowable amount, which seriously affects the export sales of Xinjiang red grapes

Method used

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  • Transportation type preservative paper for red grapes
  • Transportation type preservative paper for red grapes
  • Transportation type preservative paper for red grapes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The weight ratio is 70% of sodium pyrosulfite, 10% of citric acid, 20% of paraffin, and more than 90% of relative humidity, and is sealed and packaged with non-woven fabric and polypropylene film. The release period of red grape grapes transported at low temperature is about 40 days.

Embodiment 2

[0020] The weight ratio is 75% of sodium metabisulfite, 5% of citric acid, 20% of paraffin, and more than 90% of relative humidity, and is sealed and packaged with non-woven fabric and polypropylene film. The release period of red grapes transported at low temperature is about 45 days.

Embodiment 3

[0022] The weight ratio is 70% of sodium metabisulfite, 10% of tartaric acid, 20% of paraffin, and more than 90% of relative humidity, and is sealed and packaged with non-woven fabric and polypropylene film. The release period of red grape grapes transported at low temperature is about 40 days.

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PUM

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Abstract

The invention relates to transportation type preservative paper for red grapes, which is characterized in that ceraceous materials are used as hydrophobic materials, and a mixture of pyrosulfite and organic acid is diffused in the ceraceous materials (the weight proportion of pyrosulfite and organic acid to the ceraceous materials is 10:90 to 90:10) to form an active material layer capable of slowly releasing SO2. Hot pressing is carried out on the active material layer by non-woven fabrics and breathable film to form the preservative paper. The release period of the preservative paper in the low and damp transportation process of red grapes can reach four or five days, and the residue amount of SO2 in the preserved red grapes is smaller than 10 ppm.

Description

technical field [0001] The invention relates to cold-chain storage and long-distance transportation fresh-keeping methods of red grape grapes, especially for the continuous release of SO in the current fresh-keeping process of red grape grapes. 2 SO caused by preservation mode 2 Excessive accumulation will cause phytotoxicity and bleaching of red grapes, resulting in the fading of red grape peels and loss of original flavor after transportation. Background technique [0002] Xinjiang red grapes are mainly planted in areas such as Ili, Aksu, and Korla in Xinjiang. Due to the dry and rainless climate in Xinjiang, it is rich in light and heat resources and has a large temperature difference. The red grapes grown here are sweet, refreshing, and high in sugar content, which is no different from grapes imported from the United States, and the sugar content is slightly higher than that of American red grapes. Moreover, the grape ears are large, bright in color, crisp and hard in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/16A23B7/152
Inventor 吴斌钟梅王吉德尹勇前司志伟王頔
Owner XINJIANG UNIVERSITY
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