Effect of stover fraction and storage method on glucose production during enzymatic hydrolysis.

Abstract:

:One avenue for overcoming the economic challenges associated with the production of ethanol from renewable resources is to reduce the cost of the biomass feedstock. The balance between storage costs and benefits depend on the storage method and composition changes of individual stover fractions. Corn stover from bales stored inside and outside of a barn was separated into an interior and exterior layer after approximately 10 months of storage. The cobs, stalks, and leaves and husks were separated, dried, and ground through a 2 mm screen. Stover, sodium acetate (buffer), cellulase, and deionized water were added to 125 ml flasks. The mixture was held at 50 degrees C in an incubator and samples taken for glucose determination. The average glucose concentration after 60 h of hydrolysis from cobs, leaves and husks, and stalks was 10.5, 9.6, and 3.1 g/l, respectively. Cobs, leaves, and husks produced over 300% more glucose than stalks. Storage outside of the barn decreased the glucose production from individual stover components between 4% and 8%. The effect of stover fraction type on glucose production was significant, while the storage treatment effect was not significant. Fractionation of corn stover may be a method to increase the value of corn stover as a feedstock for glucose production.

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Montross MD,Crofcheck CL

doi

10.1016/j.biortech.2003.09.007

subject

Has Abstract

pub_date

2004-05-01 00:00:00

pages

269-74

issue

3

eissn

0960-8524

issn

1873-2976

pii

S0960852403002396

journal_volume

92

pub_type

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