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Litchi and longan antistaling agent and methods of use

A preservative and lychee technology, which is applied in the field of lychee and longan preservatives, can solve the problems of harsh fresh-keeping conditions, high cost, and environmental pollution, and achieve good fresh-keeping effect, prevent qualitative change, and simple operation

Inactive Publication Date: 2004-11-03
黄海雄
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, longan and lychee will undergo browning and qualitative changes in a short period of time under normal temperature after they are ripe and picked, and their fresh-keeping conditions are very harsh, so their time to market is very short.
At present, people generally use chemical drugs or sulfur treatment to keep litchi and longan fresh. The fresh-keeping effect is not good, it is poisonous to the human body, pollutes the environment, affects the taste of the fruit, and it has a large investment and high cost when used, and is not suitable for industrialization. Production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In this embodiment, 600 g of burnt taro powder and 20 g of sodium bisulfite are uniformly mixed at a weight ratio of 30:1 to make litchi and longan preservatives. Certainly, described sodium bisulfite also can be potassium bisulfite or sodium pyrosulfite or potassium pyrosulfite or sodium dithionite (Na 2 S 2 o 4 ) or potassium dithionite (K 2 S 2 o 4 ).

Embodiment 2

[0020] In this embodiment, 600 g of burnt taro powder and 120 g of sodium bisulfite are uniformly mixed at a weight ratio of 30:6 to make litchi and longan preservatives. Certainly, described sodium bisulfite also can be potassium bisulfite or sodium pyrosulfite or potassium pyrosulfite or sodium dithionite (Na 2 S 2 o 4 ) or potassium dithionite (K 2 S 2 o 4 ).

Embodiment 3

[0022] In this embodiment, 800 g of burnt taro powder and 10 g of sodium bisulfite are uniformly mixed according to a weight ratio of 80:1 to make litchi and longan preservatives. Certainly, described sodium bisulfite also can be potassium bisulfite or sodium pyrosulfite or potassium pyrosulfite or sodium dithionite (Na 2 S 2 o 4 ) or potassium dithionite (K 2 S 2 o 4 ).

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PUM

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Abstract

The present invention discloses one kind of lichi and longan preservative with high preserving effect, no toxicity, no environmental pollution and low cost and suitable for industrial production. The preservative consists of queensland arrowroot powder and bisulfite, pyrosulfite or dithionite capable of releasing SO2 when reacting with water and air. When the preservative is used, it is packed into non-woven polypropylene pocket, the pocket is set inside non-woven polypropylene bag for holding lichi or longan, and the bag is sealed and set into some packing box, with the amount of the preservative being 3.1-8.6 % of the weight of lichi or longan.

Description

technical field [0001] The invention relates to a preservative for litchi and longan and its application method. Background technique [0002] Along with the raising of people's living standard, melon and fruit have become requisite food in people's daily life, especially the treasure in the fresh fruit of four seasons, as litchi, longan are subjected to people's favor especially. But longan and lychee will brown and change qualitatively in a short period of time under normal temperature environment after its maturity is picked, and its fresh-keeping condition is very harsh, thereby its market time is very short. At present, people generally use chemical drugs or sulfur treatment to keep litchi and longan fresh. The fresh-keeping effect is not good, it is poisonous to the human body, pollutes the environment, affects the taste of the fruit, and it has a large investment and high cost when used, and is not suitable for industrialization. Production. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/148
Inventor 黄海雄
Owner 黄海雄
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