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  • Title: Rice straw fermentation using lactic acid bacteria.
    Author: Gao L, Yang H, Wang X, Huang Z, Ishii M, Igarashi Y, Cui Z.
    Journal: Bioresour Technol; 2008 May; 99(8):2742-8. PubMed ID: 17702573.
    Abstract:
    To efficiently utilize rice straw and lessen its disposal problem on the environment, a lactic acid bacteria community, SFC-2 was developed from natural fermentation products of rice straw by continuous enrichment with the MRS-S broth (MRS broth with sucrose), and used to accelerate the fermentation of air-dried straws. The SFC-2 could rapidly lower the pH of the broth and produce high levels of lactic acid. Using a combination of plate isolation, denaturing gradient gel electrophoresis (DGGE) and 16S rDNA sequencing, the microbial composition of the SFC-2 was classified into Lactobacillus, mainly comprised of L. fermentum, L. plantarum and L. paracacei. An evaluation of the fermentation effect of SFC-2 on rice straw showed that it lowered the pH and significantly (P<0.05) increased lactic acid concentration in the straw. Further analysis with DGGE indicated that L. plantarum, L. fermentum and L. paracasei were the dominant species during fermentation.
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