This requires the plastic degradation problem to be solved. Common plastic lunch boxes, coffee cups and other materials that can withstand boiling water temperature are polystyrene . Since 2005, Yang Jun's team has begun to study plastic biodegradation. It should not be limited to microorganisms. Boat borers and borer mussels in the ocean can erode polyethylene and submarine cables.01%-3% in 4 months. Authoritative investigations have shown that in the microbial community of soil, sludge, rotting garbage, or manure, polystyrene, such as plastic, only degrades in the range of 0.

The mechanism of the degradation of polystyrene by the yellow powder larvae: first, the foam is chewed into small pieces by the yellow powder larvae and ingested into the intestine; second, the chewing effect increases the contact area of ​​the polystyrene foam with microorganisms and extracellular enzymes. can be considered. In 2015, Professor Yang Jun's research group from Beijing University of Aeronautics and Astronautics, and Dr. Mainly attack the degradation of plastics such as polystyrene which is difficult to degrade Yang Jun believes that the idea of ​​biodegradable plastics should be developed.

The foam plastic may continue to degrade in the insect dung.Due to the inability of natural degradation of plastic, it has become the enemy of mankind and has led to the tragedy of many animal deaths. For example, monkeys, pelicans, dolphins and other animals in the zoo will mistakenly swallow plastic bottles thrown away by tourists, leading to indigestible and painful death; when I look at the beautiful and pure sea, I look closer, and they are actually full of various All kinds of plastic garbage that could not be contained in the ocean, various indigestible plastics were found in the intestines of many dead seabird samples.

The ingested fragments are further depolymerized into small molecular products under the action of extracellular Plastic Storage Boxes enzymes secreted by the intestinal microorganisms; third, these small molecular products are further degraded and assimilated to form the larva itself under the action of a variety of enzymes and the yellow powder larvae's own enzymes Tissue: The residual foam fragments and some degradation intermediates in the fourth step mix part of the intestinal microorganisms and are excreted in the form of insect dung。

Separation and cloning of key enzymes and their genes that can produce active groups in organisms. Tenebrio molitor, also called breadworm, belongs to Coleoptera, Paediata family, and Mealworm genus (Paediata) in insect taxonomy. Lepidoptera insects, termites, etc. co-published two sister research papers in authoritative journals in the field of environmental sciences, proving that the larvae of yellow mealworm (breadworm) are degradable Hard-to-degrade plastics such as polystyrene.. Professor Yang Jun introduced that in 2013, the global consumption of 299 million tons of plastic, of which polystyrene plastic accounted for 7%, consumes about 21 million tons per year

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