Jianglin Zhao¹, Xiaotong Zhang¹, Weiwei Lei¹, Xingqi Ji¹, Xin Zhou^1,2,*, Yong Xu^1,2

Journal of Renewable Materials, Vol.8, No.1, pp. 79-88, 2020, DOI:10.32604/jrm.2020.08761 - 01 January 2020

Abstract Amorphophallus konjac is rich in glucomannan, which can be hydrolyzed into glucose and mannose, thereby acting as an economic raw material for the acquisition of glucose and mannose. The total sugar yield was 91.2% when konjac powder was treated with 0.75% hydrochloric acid at 121°C for 1 h. Thus, dilute acid hydrolysates of konjac powder were used as a carbon source for obtaining value-added products. Here we showed that the microbial production of ethanol and mannonic acid was obtained by employing Candida shehatae (C. shehatae) and Gluconobacter oxydans (G. oxydans). Through a step-by-step bioprocess, glucose is the first selectively converted More >

Hui Qiao¹, Jingzhao Cui¹, Shuiping Ouyang¹, Jinjie Shi², Jia Ouyang^1,3,*

Journal of Renewable Materials, Vol.7, No.11, pp. 1197-1207, 2019, DOI:10.32604/jrm.2019.07735

Abstract As an important agricultural waste, corn cob is one of the most abundant lignocellulosic biomass. In this work, dilute acid pretreatment using seven different organic acids were compared for compositional analysis of corn cob. The first pKa of organic acids, influenced by the number and type of the side group and distance between two carboxylic groups, played a crucial role in the pretreatment effect. Citric acid was found to have better pretreatment performance than other tested dicarboxylic acids. Under the condition of 30 mM, 160°C and 60 min, the level of xylose reached 22.64 g/L More >