Green method for preserving navel oranges at normal temperature

Abstract

The invention relates to a green method for preserving navel oranges at normal temperature. The method comprises the following steps of harvesting, ultrasonic treatment, traditional Chinese medicine extract soaking, air-drying treatment, package, storage and the like. According to the method, navel oranges are soaked by adopting an illicium verum extracting solution, wherein illicium verum is a natural spice, is safe and nontoxic, can be used for inhibiting growth of penicillium italicum wehmer and penicillium digitatum, and is used for warehouse-out preservation of navel oranges, so that therotting rate of navel oranges can be effectively reduced, fruit moisture maintenance of navel oranges can be facilitated, and the shelf life of navel oranges can be prolonged. Package for single navelorange is carried out by adopting a polyethylene preservative seal bag and can be mechanically operated to form a miniature controlled atmosphere environment, so that the respiratory rate of navel oranges can be reduced, the quality of navel oranges can be maintained, moisture loss can be reduced, the navel oranges are protected from invasion of microorganisms, drosophila and other insect pests in the environment, and the green, safe and efficient storage and preservation technology and method, which can be used for prolonging the preservation time and well keeping quality and flavor of naveloranges at normal temperature, have great practical meaning and commercial value.

Description

technical field [0001] The invention belongs to the field of fresh-keeping of agricultural products, and in particular relates to a green fresh-keeping method for navel oranges at normal temperature. Background technique [0002] my country is a big producer of navel oranges, with the planting area ranking first in the world and the output ranking third in the world. However, due to the single cultivar of navel oranges, the harvesting period of navel oranges is mostly concentrated in December, and the processing industry is backward, resulting in restrictions on the storage, transportation and sales of navel oranges, which affects the enthusiasm of the majority of fruit farmers to a certain extent. Judging from the current development trend, the combination of large-scale storage in cold storage and controlled atmosphere storage of enterprises and large households with simple storage at room temperature for fruit farmers and distributors is the main mode for the development ...

AI Technical Summary

Problems solved by technology

[0004] 1) The navel orange fruit after harvest has many oil cells and is fragile, which is prone to mechanical damage, which is not conducive to long-term storage and preservation;

[0005] 2) After harvesting, the water channel between the peel and pulp of the navel orange is connected, and the water loses quickly. The pre-storage treatment can effectively cut off the channel and avoid the rapid loss of water; If the time is long, the dominant pathogenic microorganisms are easy to multiply rapidly, increasing the rot rate in the late storage period, and overdrawing the storage quality of the fruit. According to the temperature coefficient Q10 theory, every extension of the pre-storage time by 1 day will reduce the fresh-keeping life by 8-10 days;

However, the navel orange market is a typical seasonal fresh food consumption, and the listing period is too concentrated, and the main planted varieties are single in a large area. The main consumption season of navel oranges is from October to February of the next year. In other months, it is mainly imported navel oranges with high prices, and the consumption is not large.

According to the forecast of the Ministry of Agriculture, the demand for navel oranges in my country will be about 25 million tons in 2020, while the production capacity of navel oranges in my country will only be 21 million tons at that time. There will be a large market gap, which will affect the balanced supply of the market and reduce the economic benefits of the navel orange industry.