Mango air conditioned storage and preservation process

Abstract

The invention provides a mango air conditioned storage and preservation process. The process comprises the following steps: (1) according to fruit colors, fruit bearing time and the soluble pectin content, determining a picking period and a harvesting method of mango; (2) adopting a differential pressure pre-cooling method to directly carry out differential pressure pre-cooling treatment on the harvested mango in a production place pre-cooling storehouse; (3) carrying out air conditioned storage on the mango obtained after pre-cooling treatment, wherein according to the air conditioned storage condition, the oxygen content in a storage building envelope of an air conditioning store ranges from 3 percent to 8 percent, the carbon dioxide content ranges from 2 percent to 8 percent, the ethylene content is lower than 10PPM, the relative humidity ranges from 85 percent to 95 percent, and the in-storehouse environment storage environment ranges from 12 DEG C to 16 DEG C; (4) according to the air conditioned manner, continuously or intermittently carrying out deoxygenation and generating nitrogen through a nitrogen generating machine, and removing carbon dioxide and ethylene in a set manner. According to the storage freshness storage process, the storage period of the mango can be effectively prolonged to 45 days, the quality index of fruits is stable and good, good flavor and taste are kept, the perfectness ratio exceeds more than 85 percent, and the process is a safe and effective mango storage freshness method.

Description

technical field [0001] The invention relates to the technical field of controlled-atmosphere storage and fresh-keeping of fruits and vegetables, in particular to a process for controlled-atmosphere storage and fresh-keeping of mangoes. Background technique [0002] Mango is one of my country's specialty products, belonging to Anacardiaceae Mango, which is abundant in tropical regions of my country. Mango is fragrant and delicious, with unique flavor and high nutritional value. It is rich in vitamins A, B1, B2 and appropriate amount of minerals, protein, carotene and folic acid. Every 100 grams of fresh fruit contains 56 mg of vitamin C and 11% sugar. Benefits the stomach, quenches thirst, diuretic, dizziness and other effects. Mango contains ingredients such as mango 2 and papillin. The flesh is orange-yellow, tender and delicate, moderately sweet and sour, rich in fragrance, 13-21% soluble solids, little or no fiber, and has a good expectorant and cough-relieving effect on...

AI Technical Summary

Problems solved by technology

[0003] Mango is a respiratory climacteric fruit, which is sensitive to ethylene and has a strong postharvest metabolism. When the fruit is close to maturity, the respiratory intensity gradually decreases, but when the fruit enters full maturity, the respiratory intensity suddenly increases, and as the fruit ages, the respiratory intensity decreases again. It is easy to turn yellow and soft after ripening, and mangoes are susceptible to microbial infection during the growth process

Mango is sensitive to temperature, and there are differences among various varieties. Chilling injury will occur when the mango is stored at a temperature lower than the optimum temperature. Chilling injury will lead to accumulation of free radicals, trigger or aggravate cell membrane lipid peroxidation, increase membrane permeability and free The imbalance of basal metabolism and the decline of cell defense ability will eventually lead to the body's injury and death in serious cases, thus causing a large loss in the circulation process and severely restricting the development of mango production

At present, the methods of mango storage and preservation mainly include three categories: chemical method, physical method and biological method. The commercial controlled atmosphere storage of mango is still in the exploration stage. Because mango has a very low tolerance to CO2, it has not yet entered large-scale commercial storage. chemical production application