Method for preserving litchis by cane sugar and application of method

Abstract

The invention provides a method for keeping litchi fresh by cane sugar and an application of the method, wherein the method comprises the steps: spraying a 1-10 [mu]mol / L cane sugar aqueous solution on the surfaces of litchi fruits, and packaging and storing by using a polyethylene plastic film bag, thereby lowering the polyphenol oxidase activity and active oxygen content of the litchi, effectively controlling the browning and rotting of the litchi peels. The fresh-keeping method disclosed by the invention is simple to operate, low in cost, green, safe and high in application efficiency, the storage period of the litchis is effectively prolonged, and the economic loss of the litchis in a circulation link is reduced.

Description

Technical field[0001]The present invention relates to the field of fruit preservation technology, and more particularly to a method and application of the use of sucrose preparation.Background technique[0002]Litchi chinensis sonn.) Is an unscrupulous department, and the lychee is always green as a fruit tree. It is one of the important fruits of my country's tropical jam. It is mainly distributed in my country Hainan, Guangdong, Guangxi, Fujian, and other provinces. One of the four famous fruits of Lingnan is known as "Lingnan Jiao". It originated in southern my country, has more than 2,000 years of cultivation history. Now, Litchi is the first big fruit in my country's tropical subtropical regions. The fifth place in the national fruit industry is a major pillar industry in my country's agricultural economy in South China. It is also an important source of local farmers' economic income. Far in ancient times, lychee is my country's popular subtropical practices, because the litchi ...

AI Technical Summary

Problems solved by technology

However, these methods have obvious shortcomings. For example, packaging in plastic film bags can reduce the browning caused by dehydration, but because the air humidity in the bag increases, it is conducive to the growth and infection of pathogenic bacteria. It is easy to cause rot, but if fungicides are used, it will cause pesticide residue problems

In addition, although low-temperature treatment, storage and transportation have a good effect on controlling browning, but my current cold chain logistics conditions are limited, it cannot be popularized everywhere, and it is difficult to promote; moreover, low-temperature treatment technology must be combined with plastic film bag packaging, and it is necessary to maintain low-temperature conditions to achieve Achieving good results, when the lychee returns from low temperature to normal temperature, it is still prone to browning and rot

Sulfur dioxide fumigation or slow-release technology is effective in preventing browning, but it needs to be treated with acid for recoloring. After recoloring, the color of lychee peel is not bright enough, and the consumer acceptance is reduced.

It can be seen that the antistaling agent has many ingredients, and it is inconvenient to prepare for most fruit farmers, and the formula is a chemical antistaling agent, which will inevitably have certain side effects

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