BioChem - DOS

Simultaneous saccharification and fermentation of Eastern redcedar heartwood and sapwood using a novel size reduction technique

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

Ramachandriya, K.D.; Wilkins, M.; Pardo-Planas, O.; Atiyeh, H.K.; Dunford, N.T.; Hiziroglu, S.

This study investigated the effect of two wood zones (sapwood versus heartwood) and size reduction techniques [Crumbles&reg; (Crumbles&reg; is a registered trademark of Forest Concepts, LLC, Auburn, WA, USA) particles versus ground particles] on wood glucan-to-ethanol yield after acid bisulfite pretreatment and simultaneous saccharification and fermentation (SSF) of Eastern redcedar. SSFs were conducted at 8% solids loading (w/w dry basis) using Accellerase&reg; 1500 at a loading of 46FPU/g glucan and Saccharomyces cerevisiae D<SUB>5</SUB>A for ethanol fermentation. The size reduction technique had no effect on ethanol yield. However, sapwood glucan-to-ethanol yields were significantly greater than heartwood yields. The highest wood glucan-to-ethanol yield of 187L/dryMg (95% of theoretical) was achieved with sapwood crumbled particles in 240h. Ground sapwood, crumbled heartwood and ground heartwood achieved ethanol yields of 89%, 81% and 80% of theoretical in 240h, respectively. Preliminary mass balances showed 100% glucan recovery with crumbled sapwood and extensive (72%) delignification.

2014

Elsevier Applied Science

0960-8524

161

pp.1-9

10.1016/j.biortech.2014.03.005

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART69045392

Eastern redcedar; SSF; Acid bisulfite pretreatment; Sapwood; Heartwood