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. 2016 Sep 22;7:55. doi: 10.1186/s40104-016-0110-z

Fig. 6.

Fig. 6

Correlations between in vitro gas production (IVGP) and lignin/carbohydrate ratio, S/G ratio, Ph-C0-2/Ph-C3 ratio and %Cα-oxidized lignin. □ wheat straw ■ wood chips