Following the acid hydrolysis,both hydrolyzates were further
hydrolyzed with a 2%(v/v)cellulase enzyme tobreakdown the cel-
lulose polymers present.Asillustrated in Fig. 1, the lipids extracted
from the grounds demonstrat ed ahigher glucose conversion
(18 gL1) ascompared tothat (15 gL1) from the spent coffee
grounds themselv es.