Citation

Tanaka, M., Song, G.-J., Matsuno, R., and T. Kamikubo, Optimal conditions for pretreatment of rice straw with n-butylamine for enzymatic solubilization. Applied Microbiology and Biotechnology 22: 13-18, 1985.

Abstract

Summary-Three different pretreatment methods with n-butylamine (n-BA) were used to obtain fermentable sugars in a high yield from rice straw. The optimal conditions of each method were as follows: treating at boiling point for 1h under refluxing in 10w/w% n-BA with the weight ratio of n-BA to original rice straw more than 1.0, autoclaving at 120°C for 1h in 1 w/w% n-BA with the weight ratio more than 0.1, and wetting for 2h with the circulating condensate of the vapor evaporated from 2.5w/w% n-BA with the weight ratio more than 0.8. Soaking rice straw with n-BA before the above pretreatments was not needed. For the circulation pretreatment, the overall cumulative yield of total sugar (70% of cellulose and hemicellulose in original rice straw) was best for both pretreatment and enzymatic solubilization steps, because there was no decomposition of monosaccharides during the pretreatment. Furthermore, the optimal degree of delignification for enzymatic solubilization of the pretreated rice straw was approximately 60% of lignin in the original.

Country, State, District, etc.

Japan

Language

English

Material

rice straw

Use category

ethanol production, single cell protein