It is learned from the Institute of Botany, Chinese Academy of Sciences (Institute of Botany, Chinese Academy of Sciences) that the researchers of the institute have recently made important progress in the research on the biological removal of mycotoxins. They have successfully prepared an immobilized enzyme preparation with both adsorption and biodegradation properties, which can Efficient and safe application of patulin in the removal of contaminated fruit and vegetable processed products.
Mycotoxins are secondary metabolites produced by fungi, which are widespread sources of pollution in the food industry and an important cause of food safety. Among them, patulin is an important mycotoxin that pollutes fresh fruits and vegetables and their processed products. Traditional physical and chemical removal methods have disadvantages such as affecting product quality and causing secondary pollution, while biological detoxification is efficient, safe and specific. Strong, is a new technology with broad application prospects.
The Li Boqiang research group of the Institute of Botany, Chinese Academy of Sciences identified a short-chain dehydrogenase (CgSDR) that can degrade patulin in a previous study. In order to realize the industrial application of this enzyme, the researchers used modified magnetic ferric iron tetroxide Particles were used as carriers, and an immobilized enzyme preparation with both adsorption and biodegradation properties was successfully prepared through covalent linkage. The enzyme preparation can degrade 100% of patulin in the buffer system and 88% in apple juice, and has no adverse effect on the quality of the juice.
Researcher Li Boqiang pointed out that compared with free enzymes, the thermal stability and storage period of immobilized enzymes have been significantly improved, and magnetic separation and recovery from fruit juice products can be achieved within 30 seconds, and more than 50% of them can be retained after repeated use 7 times The degradation efficiency greatly reduces the application cost. Further cytotoxicological analysis showed that the enzyme preparation had good biocompatibility. This study prepared a highly efficient, stable, easy-to-recover, reusable, and highly safe patulin-removing enzyme preparation, which provided a new idea for the development of mycotoxin removal technology and has broad application prospects.
It is understood that this important research paper on the successful development and preparation of biological detoxification agents has recently been published online in the international professional academic journal “Journal of Hazardous Materials”.
The research team revealed that on this basis, the detoxification efficiency of enzyme preparations will be further improved in the future, and the cost of use will be reduced. Through cooperation with fruit and vegetable processing enterprises, combined with the research and development of application technologies for fruit juice and other products, the industrial application will be realized as soon as possible.