Table 1.

Some examples of plastic-degrading bacterial enzymes.

Enzyme Class	Enzyme Group	Enzyme Source	Type of Biodegraded Plastic	Reference
Hydrolases that split ester bonds	Esterase	Streptomyces sp. SM14	PET	[33]
	Esterase	Bacillus subtilis	PU	[29]
	Esterase	Alicycliphilus sp.	PU	[30]
	Aromatic polyesterase	Ideonella sakaiensis 201-F6	PET	[2]
	Esterase E3576	Commercially available by Proteus	PU	[31]
	Lipase	Alcaligenes faecalis	PCL	[34]
Hydrolases that act on carbon–nitrogen bonds	amidase E4143	Commercially available by Proteus	PU	[31]
	6-aminohexanoate-cyclic-dimer hydrolase, 6-aminohexanoate -dimer hydrolase and endo-type6-aminohexanoate-oligomer hydrolase	Flavobacterium sp. KI72	6-aminohexano-ate, an intermediate product of nylon	[35]
Oxydase	PVA dehydrogenase	Sphingomonas sp. strain 113P3	PVA	[36]
	Alkane hydroxylase	Pseudomonas sp. E4	PE	[37]
	Laccases	Rhodococcus ruber	PE	[38]
	Monoxygenases	Rhodococcus sp. TMP2	PE	[39]