Table 2.

Bacteria degradation of lignin in various biomass sources

Microorganisms	Strains	Biomass materials	Lignin degradation	Ref
Aerobic bacteria	Streptomyces viridosporus T7A	Softwood spruce, hardwood maple and grass	30.9%, 32%, and 44.2%	[52] (Antai, Crawford)
	Rhodoccocus Jostii RHA1	Soluble and lignin-rich stream	18.9%	[55] (Salvachúa et al.)
	R. pyridinivorans CCZU-B16	Alkali lignin	30.2%	[128] (Chong et al.)
	Pseudomonas putida KT2440	Alkaline pretreated liquor	~ 30%	[58] (Salvachúa et al.)
	P. putida NX-1	Kraft lignin	28.5%	[59] (Xu et al.)
	Comamonas sp. B-9	Kraft lignin	45%	[61] (Chai et al.)
	Bacillus ligniniphilus L1	Alkaline lignin	38.9%	[62] (Zhu et al.)
	B. amyloliquefaciens SL-7	Tobacco straw lignin	28.55%	[63] (Mei et al.)
Facultative anaerobe bacteria	Enterobacter lignolyticus SCF1	Alkali lignin	56%	[68] (DeAngelis et al.)
	Acetoanaerobium sp	Kraft lignin	24.9%	[71] (Duan et al.)
Extremophile bacteria	Caldicellulosiruptor kronotskyensis	Natural rice straw	52.5%	[74] (Peng et al.)
	Arthrobacter sp. C2	Sodium lignin sulfonate	40.1%	[75] (Jiang et al.)