Fig. 1From: Fractionation and characterization of lignin streams from unique high-lignin content endocarp feedstocksa Bulk density of endocarp biomass in flour form in comparison with switchgrass and lodge pole pine in flour and pellet forms [7]; b confocal microscopographs of Calcoflour White stained raw biomass comparing (1) switchgrass stem (1st internode), (2) pine stem (heartwood), (3) walnut endocarp, and (4) peach endocarpBack to article page