Oilseed rape modified atmosphere packaging preservation method

Abstract

The invention provides an oilseed rape modified atmosphere packaging preservation method which comprises steps of selection, cleaning, water draining, sterilization, bagging, vacuuming, aeration, sealing and warehouse storage, wherein the step of aeration comprises a step of feeding gases of O2, CO2 and N2 into bags with oilseed rape by using a high-pressure aerator; the parameter values of the gases are that the concentration of O2 is less than 2, the concentration of CO2 is greater than 20%, and the other gas is N2. The method is novel in design, unique in method and wide in application, and key techniques that oilseed rape is short in shelf life and liable to rot and yellow are solved. The oilseed rape modified atmosphere packaging preservation method is low in production cost and very good in practicability and popularization since the shelf life of 3 days at normal temperature is prolonged to 25 days or greater.

Description

technical field [0001] The invention belongs to the field of food processing, and in particular relates to a modified atmosphere packaging preservation method for rapeseed. Background technique [0002] Rapeseed is a dark green leafy vegetable with high nutritional value. Every 100g of rapeseed contains 23 calories, 623 micrograms of carotene, 210 mg of potassium, 108 mg of calcium, 103 micrograms of vitamin A, 55.9 mg of sodium, 39 mg of phosphorus, vitamin C 36 mg, magnesium 22 mg, carbohydrate 3.78 g, protein 1.8 g, iron 1.2 mg, cellulose 1.1 g, vitamin E 0.89 mg, selenium 0.79 micrograms, niacin 0.72 mg, fat 0.5 g, zinc 0.35 mg, manganese 0.23 mg, riboflavin 0.15 mg. The vitamin C contained in rapeseed is more than 1 times higher than that of Chinese cabbage. It can promote blood circulation and remove blood stasis, detoxify and reduce swelling, widen the intestines and laxative effect, and strengthen the body. Indications for traveling wind erysipelas, boils and swol...

AI Technical Summary

Problems solved by technology

[0003] However, in the post-harvest preservation process, rape is prone to mechanical damage, aging, and loss of nutrients. The preservation period of rapeseed by spontaneous air conditioning and other processing methods is only 7-10 days, which is difficult to meet the requirements of long-term storage and transportation.

Adding preservatives, preservatives, low-temperature refrigeration, etc. can prolong the fresh-keeping period, but considering food safety issues, it is difficult to meet the requirements of consumers

On the other hand, low-temperature refrigeration requires additional transportation costs and shelf costs, especially in the hot season, which greatly affects the post-harvest freshness of rapeseed.

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