The impact of enzyme characteristics on corn stover fiber degradation and acid production during ensiled storage.
Ensilage can be used to store lignocellulosic biomass before industrial bioprocessing. This study investigated the impacts of seven commercial enzyme mixtures derived from Aspergillus niger, Trichoderma reesei, and T. longibrachiatum. Treatments included three size grades of corn stover, two enzyme levels (1.67 and 5 IU/g dry matter based on hemicellulase), and various ratios of cellulase to hemicellulase (C:H). The highest C:H ratio tested, 2.38, derived from T. reesei, resulted in the most effective fermentation, with lactic acid as the dominant product. Enzymatic activity during storage may complement industrial pretreatment; creating synergies that could reduce total bioconversion costs.
Ren
Haiyu
H
Department of Agricultural and Biological Engineering, 249 Agricultural Engineering Building, University Park, Pennsylvania 16802, USA.
Richard
Tom L
TL
Moore
Kenneth J
KJ
D001426:Bacterial Proteins / Q000737:chemistry*; D004789:Enzyme Activation; D006026:Glycoside Hydrolases / Q000737:chemistry*; D007220:Industrial Waste / Q000517:prevention & control*; D019344:Lactic Acid / Q000737:chemistry*; D012820:Silage / Q000382:microbiology*; D003313:Zea mays / Q000737:chemistry*
D001426:Bacterial Proteins; D007220:Industrial Waste; D019344:Lactic Acid; D006026:Glycoside Hydrolases; C023305:hemicellulase