Biosynthetically Degradable Disposable Tableware Is Used And Replaced

The latest research achievement of degradable materials is that disposable tableware manufacturers naturally synthesize high polymer materials through the growth of bacteria in the fermentation place, such as polyhydroxybutyl ester (PHB), which is the real sense of biodegradable materials. This microbial polyester, which can be produced in organisms, is an exciting discovery in the field of degradable materials research. It is a material stored in bacteria to cope with food stress. It can be activated by many bacteria, leading to rapid depolymerization.

The results showed that the depolymerizing bacterial enzymes could be divided into two types: one type degraded the polymer into dimer, the other type degraded the dimer into monomer. The initial stage of PHB biodegradation is the change of membrane surface, that is, surface hydrolysis, which leads to the increase of the number of - oh and ~ COOH on the surface, and the bacteria begin to reproduce. The growth rate depends on the temperature and pH value. PHB terminal is degraded into 3-hydroxybutyric acid, which is the normal metabolite of human blood.

PHB is mainly used in disposable tableware, membrane and medical applications. A company in the UK has recently improved the purification method of PHB fermentation and basically started to produce PHB. At present, the manufacturers of disposable tableware are trying to introduce the genetic factors of PHB synthesis system into plants in order to obtain microbial polyester. This experiment has been preliminarily successful. A company used the obtained technology, i.e. recombinant cell technology, to produce a kind of degradation material of polyhydroxyalkanoates. The cost of this method is lower than that of fermentation method.

There are two directions for the research on biodegradation of disposable tableware manufacturers
(1) It is mainly combined with biotechnology to synthesize new polymer materials with similar structure to natural macromolecules, which requires a lot of manpower, material resources and time investment
(2) The emphasis is placed on the controllability of the degradation of disposable tableware. After treatment, disposable tableware decomposes rapidly. The treatment operation should be simple and easy to implement. For example, polyacid, which is stable in alkaline environment, can be hydrolyzed into monomers quickly and obviously once put into neutral or acidic environment.