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Fresh-cut lotus root fresh-keeping method of modified atmosphere packing with high oxygen

A technology of fresh-keeping packaging and cutting lotus root, which is applied in the direction of preservation of fruits and vegetables, food preservation, and protection of fruits/vegetables with a protective coating layer, which can solve the problems of loss of commercial value, high moisture content of lotus roots, and high breathing intensity, and achieves maintenance Color, wide application prospects, and the effect of inhibiting rot

Inactive Publication Date: 2008-07-30
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, fresh lotus root has a high water content, strong respiration, and strong physiological metabolism, which makes it very difficult to keep fresh lotus root after cutting. After 2 to 3 days after cutting, it will shrink due to severe water loss, and the surface will be browned. commodity value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of fresh-cut lotus root of the present invention high-oxygen-adjusted fresh-keeping packaging method adopts the following process steps:

[0025] Soak the selected and cleaned fresh lotus root in 1% NaClO solution for 3 minutes, drain and remove the stalks; cut off the joints and cut them into 3mm slices; soak the cut lotus root slices in Content: 1% V C . Filled with a volume ratio of 95% O 2 with 5%N 2 The mixed gas is sealed with stretched polypropylene / polyethylene composite film. The shelf life at 5°C is more than 15 days.

Embodiment 2

[0026] Embodiment two: a kind of fresh-cut lotus root of the present invention high-oxygen-adjusted fresh-keeping packaging technical method adopts the following process steps:

[0027] The present invention soaks the selected and cleaned fresh lotus root in 1% NaClO solution for 4 minutes, removes the stalks after draining; cuts off by joints and cross-cuts them into 4mm slices; soaks the cut lotus root slices in the mass percent For: 1% V C . The filling volume ratio is 85% O 2 with 15% N 2 The mixed gas is sealed with stretched polypropylene / polyethylene composite film. The shelf life at 5°C is more than 13 days.

Embodiment 3

[0028] Embodiment three: a kind of fresh-cut lotus root high-oxygen-adjusted fresh-keeping packaging technical method of the present invention adopts the following process steps:

[0029] The present invention soaks the selected and cleaned fresh lotus root in 1% NaClO solution for 5 minutes, removes the stalks after draining; cuts off by joints and cross-cuts them into 5mm slices; soaks the cut lotus root slices in the mass percent For: 1% V C . The filling volume ratio is 80% O 2 with 20%N 2 The mixed gas is sealed with stretched polypropylene / polyester composite film. The shelf life at 5°C is more than 12 days.

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PUM

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Abstract

The invention relates to a hyperoxic modified atmosphere packaging method for fresh-cut lotus roots, which belongs to a field of fruit and vegetable preserving and storing technique, which is characterized in that the fresh lotus roots being selected and cleaned are dipped in an NaClO solution and then removed the pedicels after being dried by dripping, cut off against the node and cut crossly into slices; the cut lotus slices are dipped in a preservative solution comprising Vc, calcium propionate, cysteine and water, and placed in a packing tray after being dried with air and then filled into configuration air, encased with high barrier composite membrane and stored in a temperature of 0-5 DEG C. The invention aims at solving the problem that the fresh-cut lotus roots after cutting process are easy to brown, rot and degrade the quality during storing and transporting, and can effectively inhibit the spoilage and the reduction of Vc content of the fresh-cut lotus roots, keep good color of the product, ensure the product editable safety and remarkably prolong the shelf life of the product.

Description

technical field [0001] The invention relates to a fresh-cut packaging method for fresh-cut lotus root with high-oxygen adjustment, and belongs to the technical field of fresh-keeping and storage of fruits and vegetables. Background technique [0002] Fresh fruits and vegetables are perishable products. It is estimated that the annual loss of fruits and vegetables due to aging, deterioration and rot in the world is as high as 30% on average, and 10-20% in developed countries. In developing countries that lack refrigeration equipment, post-harvest losses of fruits and vegetables Up to 30-50%. On the basis of the traditional low-temperature cold storage technology for fruits and vegetables, in recent years, modified atmosphere packaging (MAP) and combined modified atmosphere packaging combined with different pretreatments, as advanced and effective fruit and vegetable preservation technologies, have gradually been commercially applied in the sales packaging of fruit and vegetab...

Claims

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Application Information

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IPC IPC(8): A23B7/00A23B7/157A23B7/148A23B7/04A23B7/16
Inventor 卢立新蔡莹
Owner JIANGNAN UNIV
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