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Composite fresh-keeping agent for Chinese water-chestnut storage, and preparation method thereof

A composite fresh-keeping and water chestnut technology, which is applied in the directions of fruit and vegetable fresh-keeping, application, food preservation, etc., can solve the problems of seriously polluted materials, environmental white pollution, and difficult to decompose.

Active Publication Date: 2014-07-09
金微克食品配料(杭州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, polymer packaging films such as polyethylene and polyvinyl chloride are mostly used commercially as packaging materials for lightly processed fruits and vegetables. However, these polymer materials are not easy to decompose in the natural environment and cause serious pollution and some materials Toxicity and other characteristics, easy to produce "white pollution" to the environment, so people look forward to new biodegradable non-toxic food preservation packaging materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] ①Take 100g of pullulan, dissolve it in water by heating, then add 20g of monoglyceride laurate, add 1g of ascorbic acid after cooling, add water to measure to 10kg. Choose water chestnuts that are basically the same size and free from damage, diseases and insect pests, peel off the shell, soak in the above-mentioned compound fresh-keeping solution for 3-5 minutes, remove and dry, then put the freshly cut water chestnuts into a plastic box and place them at 8-10°C Store at a temperature of C.

Embodiment 2

[0011] ①Take 150g of pullulan, dissolve it in water by heating, then add 30g of monoglyceride laurate, add 2g of ascorbic acid after cooling, add water to measure to 10kg. Choose water chestnuts that are basically the same size and free from damage, diseases and insect pests, peel off the shell, soak in the above-mentioned compound fresh-keeping solution for 3-5 minutes, remove and dry, then put the freshly cut water chestnuts into a plastic box and place them at 8-10°C Store at a temperature of C.

Embodiment 3

[0013] ①Take 200g of pullulan, dissolve it in water by heating, then add 40g of monoglyceride laurate, add 3g of ascorbic acid after cooling, add water to measure to 10kg. Choose water chestnuts that are basically the same size and free from damage, diseases and insect pests, peel off the shell, soak in the above-mentioned compound fresh-keeping solution for 3-5 minutes, remove and dry, then put the freshly cut water chestnuts into a plastic box and place them at 8-10°C Store at a temperature of C.

[0014] The present invention selects the storage effect contrast result of control group storage mode and the storage mode in the above-mentioned embodiment as follows:

[0015] Table 1 Changes of browning index of water chestnuts

[0016] deal with

1 day

2 days

3 days

4 days

5 days

Group A

0.4

1.3

2.3

2.9

3.6

Group B

0.4

0.9

1.6

2.3

2.8

Group C

0.2

0.5

1.2

1.8

2.2 ...

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PUM

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Abstract

The present invention discloses a composite fresh-keeping agent for Chinese water-chestnut storage. The composite fresh-keeping agent comprises, by mass, 1-2% of pullulan, 0.2-0.4% of glycerol monolaurate, 0.01-0.03% of ascorbic acid, and the balance of water. The present invention further provides a method for preparing the composite fresh-keeping agent for Chinese water-chestnut storage. With the technical scheme, the storage time of the Chinese water-chestnut storage is effectively prolonged.

Description

technical field [0001] The invention relates to a fresh-keeping technology for agricultural products, in particular to a composite preservative for storing water chestnuts and a preparation method thereof. technical background [0002] Water chestnut (Chinese water-chestnut), scientific name Eleocharis tuberosa (Roxb.) Roem.et. Schult. Also known as ground chestnut, horseshoe, black taro, and chrysanthemum, it is a cultivated species of water chestnut in Cyperaceae (Cyperaceae) that can form underground bulbs, and is a perennial herb. Water chestnut tastes sweet and crisp, rich in nutrition, containing protein, fat, crude fiber, carotene, vitamin B, vitamin C, iron, calcium, phosphorus and carbohydrates. It can be eaten raw or used for cooking, can be used to make starch, and can also be used as traditional Chinese medicine. At present, water chestnuts are mainly sold in the form of skins, but the peeling of fresh water chestnuts is quite complicated, and it also affects u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/154
Inventor 周西安何焕英
Owner 金微克食品配料(杭州)有限公司
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