Substrate	Reference(s)	Comment(s)
cinnamic acid	Falcón, M., Rodríguez, A., Carnicero, A., Regalado, V., Perestelo, F., Milstein, O., & De la Fuente, G. (1995). Isolation of microorganisms with lignin transformation potential from soil of Tenerife island. Soil Biology and Biochemistry, 27(2), 121–126. https://doi.org/10.1016/0038-0717(94)00174-y	-
dehydropolymerisate (dhp)	Falcón, M., Rodríguez, A., Carnicero, A., Regalado, V., Perestelo, F., Milstein, O., & De la Fuente, G. (1995). Isolation of microorganisms with lignin transformation potential from soil of Tenerife island. Soil Biology and Biochemistry, 27(2), 121–126. https://doi.org/10.1016/0038-0717(94)00174-y	"(<sup>14</sup>C-ring or <sup>14</sup>C-(&#946;-side chain)- 
DHP)"
ferulic acid	Falcón, M., Rodríguez, A., Carnicero, A., Regalado, V., Perestelo, F., Milstein, O., & De la Fuente, G. (1995). Isolation of microorganisms with lignin transformation potential from soil of Tenerife island. Soil Biology and Biochemistry, 27(2), 121–126. https://doi.org/10.1016/0038-0717(94)00174-y	-
wheat straw lignin	Rodriguez, A., Perestelo, F., Carnicero, A., Regalado, V., Perez, R., Fuente, G., & Falcon, M. (1996). Degradation of natural lignins and lignocellulosic substrates by soil-inhabiting fungi imperfecti. FEMS Microbiology Ecology, 21(3), 213–219. https://doi.org/10.1111/j.1574-6941.1996.tb00348.x	(milled wood lignin)