Preliminary Study on Rice Straw Degradation Using Microbial Inoculant under Solid-state Fermentation Condition

Abstract

Abundance and unmanaged agriculture residues lead to unutilized resource waste and environmental pollution. The application of microbial technology to manage agriculture waste could produce value-added products. A preliminary study on the biodegradation process of rice straw using different potential microorganisms was tested under laboratory study. Three different inoculant cultures were used to observe their efficiency in rice straw degradation. Combination cultures of microorganisms coding AMB1 show the potential degrading activity, which reduces the hemicellulose of rice straw by 50% from the raw material. The highest cellulase activity at 1.5 U/mL was also observed in rice straw treatment with AMB1, which was higher than in single inoculant fungi and commercial microbial products. Overall, the results suggested that the biodegradation of rice straw could be improved by using combination cultures, AMB1. The ability of these cultures to enhance biodegradation shows potential to shorten the decomposing period and may be used to manage agriculture waste.