Substrate	Reference(s)	Comment(s)
kraft lignin	Perestelo, F., Falcon, M. A., & Fuente, G. D. L. (1990). Biotransformation of kraft lignin fractions by Serratia marcescens. Letters in Applied Microbiology, 10(2), 61–64. https://doi.org/10.1111/j.1472-765x.1990.tb00265.x; Perestelo, F., Falcón, M. A., Carnicero, A., Rodríguez, A., & de la Fuente, G. (1994). Limited degradation of industrial, synthetic and natural lignins by Serratia marcescens. Biotechnology Letters, 16(3), 299–302. https://doi.org/10.1007/bf00134629	(ethyl acetate solvable fraction); (Indulin AT)
vanillin	Perestelo, F., Dalcón, M. A., & de la Fuente, G. (1989). Production of vanillic acid from vanillin by resting cells of Serratia marcescens. Applied and Environmental Microbiology, 55(6), 1660–1662. https://doi.org/10.1128/aem.55.6.1660-1662.1989	-