It is known that the degradation of natural polymers by microorganisms is accomplished by enzyme proteins produced by biosynthesis. These enzyme proteins can land on the cell wall or exist in the cell's protoplasmic structure.
Some enzymes can sneak into the surrounding environment,Biodegradable mailing bags and some enzymes stay in the cell and are only released when the cell is lysed or mechanically broken. Enzymes have only highly specific catalytic ability for biochemical reactions,Biodegradable mailing bags and they proceed quickly under suitable physiological conditions.
There are two degradation methods for biodegradable plastic bags,Biodegradable mailing bags which can be divided into: (1) Biophysical degradation method: When microorganisms attack and erode polymer materials,Biodegradable mailing bags the growth of biological cells causes the polymer components to be hydrolyzed, ionized or protonated When split into oligomer fragments,Biodegradable mailing bags the molecular structure of the polymer remains unchanged.
This is a degradation process caused by the biophysical action of the polymer. (2) Biochemical degradation method: Due to the direct action of microorganisms or enzymes,Biodegradable mailing bags the polymer is decomposed or oxidized into small molecules,Biodegradable mailing bags and finally decomposed into carbon dioxide and water. This degradation method is a biochemical degradation method.