Table 1.

Previous studies of esterase activity tests on soil for plastic degradation.

Subject to applicable	Substrate as indicator	Degrading Plastic	Reference
Biodegradation detection of poly(butylene succinic acid) aliphatic polyester in soil.	pNP-C2	PBS	[57]
Evaluation soil esterase activity using p-nitrophenyl valerate	pNP-C4	-	[58]
Biodegradation detection of biodegradable polyester mulch film in soil.	pNP-C4	PBSA	[59]
Detection of degree of plastic film degradation according to distribution ratio of PBSA-degrading fungi in soil.	pNP-C5	PBSA	[60]
Selecting good soil and screening high degrading strain	pNP-C2	PBS, PCL, PBAT, PLA, PHB	In this study