Fresh-keeping method of postharvest broccoli in modified atmosphere packaging

Abstract

The invention provides an MAP (modified atmosphere packages) preservation method for picked broccoli. The MAP preservation method comprises the following steps: (1) pretreatment of the picked broccoli: fresh and healthy broccoli without apparent damage is subjected to rapid precooling treatment after picking, and the core temperature is reduced to 0-1 DEG C; (2) preserved MAP: single precooled broccoli or multiple pieces of precooled broccoli are loaded into a polyethylene preservation packaging bag for sealed packaging, the O2 permeability coefficient of the polyethylene preservation packaging bag is 10,000-20,000 cm<3> / m<2>.24h.0.1 MPa, the CO2 permeability coefficient of the polyethylene preservation packaging bag is 6,000-8,000 cm<3> / m<2>.24h.0.1 MPa, and the water vapor transmission of the polyethylene preservation packaging bag is 20-30 g / m<2>.24h; (3) cold storage for preservation: the bagged broccoli subjected to preservation packaging treatment with the polyethylene preservation packaging bag is stored, transported or sold in a cold storage preservation storehouse or a cold storage wagon at the temperature of 0-1 DEG C. The method is simple and convenient to operate, quality deterioration phenomena such as withering and water loss, green fading and yellowing of inflorescence, rot, deterioration and the like of the fresh broccoli after picking can be relieved effectively, special nutrition and flavor of the broccoli in the storage period are kept, the shelf life is prolonged, and popularization and application are easy.

Description

Technical field: [0001] The invention belongs to the fresh-keeping technical field of fresh agricultural products, and in particular relates to a fresh-keeping method for post-harvest broccoli. Background technique: [0002] broccoli( Brassica oleacea L. var. italica ), also known as cauliflower, green cauliflower, and broccoli, is a variety of Brassica oleracea in the Brassicaceae family. Its edible parts are green curds and fat and tender flower diameters. Broccoli is rich in active ingredients such as protein, vitamin C, mineral elements, flavonoids, glucosinolates and sulforaphane. It has anti-oxidation, anti-aging and anti-cancer effects. It is known as the "Queen of Vegetables" and deeply Popular with consumers. [0003] Broccoli is a respiratory climacteric vegetable, and its respiratory metabolism is strong after harvesting. After 1-2 days at room temperature, it will wilt and lose water, the inflorescence will gradually open, and the chlorosis will turn. The p...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problems of post-harvest broccoli such as vigorous respiratory metabolism, wilting and dehydration, inflorescence chlorosis and short shelf life, and provides a method that is easy to operate and can effectively alleviate the post-harvest quality deterioration of fresh broccoli and maintain broccoli storage. Unique nutrition and flavor during the period, extended shelf life, easy to popularize and apply post-harvest broccoli post-harvest spontaneous modified atmosphere packaging preservation method

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