BioChem - DOS

Efficient production of succinic acid from herbal extraction residue hydrolysate

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

Wang, Caixia; Su, Xinyao; Sun, Wei; Zhou, Sijing; Zheng, Junyu; Zhang, Mengting; Sun, Mengchu; Xue, Jianping; Liu, Xia; Xing, Jianmin; Chen, Shilin

<P><B>Abstract</B></P> <P>In this study, six different herbal-extraction residues were evaluated for succinic acid production in terms of chemical composition before and after dilute acid pretreatment (DAP) and sugar release performance. Chemical composition showed that pretreated residues of <I>Glycyrrhiza uralensis Fisch</I> (GUR) and <I>Morus alba</I> L. (MAR) had the highest cellulose content, 50% and 52%, respectively. Higher concentrations of free sugars (71.6 g/L total sugar) and higher hydrolysis yield (92%) were both obtained under 40 FPU/g DM at 10% solid loading for GUR. Using scanning electron microscopy (SEM), GUR was found to show a less compact structure due to process of extraction. Specifically, the fibers in pretreated GUR were coarse and disordered compared with that of GUR indicated by SEM. Finally, 65 g/L succinic acid was produced with a higher yield of 0.89 g/g total sugar or 0.49 g/g GUR. Our results illustrate the potential of GUR for succinic acid production.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Herbal-extraction residues were explored for succinic acid production. </LI> <LI> GUR showed the best potential for producing fermentable sugars. </LI> <LI> Higher concentrations of sugars and higher hydrolysis yield were both obtained for GUR. </LI> <LI> 65 g/L succinic acid with a higher yield 0.49 g/g GUR was produced. </LI> </UL> </P>

2018

Elsevier

0960-8524

265

pp.443-449

10.1016/j.biortech.2018.06.041

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART85395763

Biomass; Herbal-extraction residues; Succinic acid