The durability of TUT/CM pellets, unlike LAR/CM pellets, was
significantly lower than those of TUT/RF or LP pellets, although CM
contained large amounts of lignin (41.7%) and protein (11.6%). This
can probably be attributed to the high fat/oil content of CM (22.7%)
compared to that of RF (11.7%). Briggs et al. [12] and Richardson
et al. [27] stated that the fat/oil present in the feed acts as a
lubricant between the feed particles or between the feed and the
die-wall of a pelletizer, and that the pressure in the die is reduced,
which results in lower pellet durability [12,27]. Therefore, the high
fat/oil content of CM might negatively affect the durability of the
pellets.