At this stage, there is no unified standard for the detection of the dissolution characteristics of biodegradable raw materials. The method including the method adopted or planned to be adopted by the American Testing Standard for Materials (ASTM) can be selected as the standard method, through biochemical and microbiological experiments. The main ways to evaluate are as follows.

1. Soil burial method:

There are two kinds of soil burial methods: outdoor soil burial method and indoor soil burial method. The source of microbial bacteria is mainly the microbial population in the soil layer. After a certain period of time, the test piece is taken out to measure its weightlessness and mechanical properties. Or electron microscopy to clarify the state of its invasion by microbial strains in the soil layer
condition. The advantage is that it can reflect the biosolvability under natural environmental conditions; the disadvantage is that the experiment takes a long time, and the experimental results are due to poor soil quality.
Same as different, poor repeatability.

2. Petri incubator quantitative method:

Add experimental samples and nutrient agar to the vessel, inoculate microbial strains for cultivation, and after a certain period of time, analyze the weightlessness state of the test piece and some physical or chemical changes. The advantage is that it can be quickly degraded, the experimental results can be obtained in a short time, the renaturation is good, and the quantification is good; the defect is that it cannot reflect the actual situation in nature.

3. Enzyme analysis method:

Add buffer solution and test sample to the vessel, let the enzyme act for a certain period of time, analyze the weightlessness of the test piece, visually observe the growth of mold, and analyze the changes in the physical or chemical properties of the test piece with a microscope. The advantage is that the experiment period is short, the refolding is good, and the quantification is good; the defect is that it cannot reflect the actual situation in nature.

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