Scientific and technological means to solve the problem of fresh fruit and vegetable storage

With the increasing variety of ingredients and food and the continuous changes in climate and environment, traditional fresh-keeping methods have been unable to meet the deeper needs for fresh-keeping fruits and vegetables

In the view of Chen Wei, academician of the Chinese Academy of Engineering and president of Jiangnan University, the food needs of consumers are increasingly diversified, and the application of modern technical means to solve the problem of fresh fruit and vegetable storage will play an important role in ensuring market supply and promoting rural revitalization

Yao Weirong introduced that leafy vegetables are easy to rot, mainly due to the relatively high moisture content, vigorous physiological activity after picking, high original microbial contamination, and high requirements for storage conditions

In order to prevent fresh vegetables from rotting and deteriorating, most of them choose to keep them refrigerated

Chen Wei introduced that the food consumption structure of urban and rural residents in China was initially dominated by the consumption of coarse grains, and now it is rapidly transforming to a dietary structure in which vegetables, fruits, meat, milk, eggs and other agricultural products, livestock products, aquatic products and processed foods coexist

At present, the most effective vegetable storage methods in the world are mainly the controlled atmosphere storage method and the irradiation storage method, which respectively inhibit the growth of microorganisms or vegetable tissues by improving the composition of the ambient gas and using irradiation, and play the role of insecticide and sterilization.

The "magnetic field preservation technology" jointly developed by Jiangnan University and TCL in January this year passed the project technical appraisal meeting organized and hosted by China National Light Industry Federation

According to relevant experts, molecular preservation technology is to use magnetic field induction to achieve unlimited microscopic vector preservation, so that ingredients can achieve 6D preservation effects of moisturizing, nourishing, beauty, net, live and fresh

At present, the latest technological achievements in the integration of production and education with multiple functions of water locking, anti-oxidation and bacteriostasis have been applied in China

Some agricultural production bases, storage and transportation enterprises, at present, it is still difficult to package and store all kinds of vegetables in a targeted manner.

Chen Wei believes that there are still some problems to be solved in promoting the high-quality and differentiated development of agricultural products and food industries in China

(Source: Science and Technology Daily)

"China Food News" (May 20, 2022 08 edition)

(Editor in charge: Wang Jiayi)