Growth of Chaetomium cellulolyticum in solid-state fermentation of sugar cane bagasse treated with water and alkali at several liquid/solid ratios

Abstract

Sugar cane bagasse was water-or alkali-treated at three liquid/solid (L/S) ratios and its digestibility was measured as microbial protein production of Chaetomium cellulolyticum grown on solid-state fermentation columns. The treatments significantly enhanced fungus growth compared to non-treated bagasse, which was used as a control, although the composition of bagasse did not change greatly. Alkali-treated bagasse reached an average protein content of about 7.6% and the lower the L'S ratio, the higher the protein content. L/S ratio did not have an effect in water-treated bagasse. Protein content of water-treated bagasse was also high, approximately 80% of that one of alkali-treated bagasse. Both treatments look promising to enhance sugar cane bagasse potential as an animal feed.

Kinetic of Biomass Growth and Protein Formation on Rice Bran Fermentation Using Rhizopus oryzae

“…The kinetic equation of protein formation, Deceleration model is also used to describe the production of protein from bagasse using Chaetomium cellulolyticum through solid state fermentation method. The results of model calculations with experimental data show a significant proximity [50].…”

Bioconversion of biomass: a case study of ligno-cellulosics bioconversions in solid state fermentation

“…Gutierrez-Correa and Tengerdy (1998) also performed xylanase production in SSF using bagasse. They co-cultured T. reesei and A. niger Nigam (1990), Nigam et al (1987), Zadrazil & Puniya (1995), Bravo et al (1994), Iyo & Antai (1991), Rodriguez-Vazguez et al (1992), Puniya et al (1996), Iritani et al (1995), Chaudhary et al (1994), Cellulases Sharma et al (1991Sharma et al ( , 1995, Ray et al (1993) Gupte & Madamwar (1994a, b) GutierrezCorrea & Tengerdy (1997, 1998, Duenas et al (1995), Laccase Pal et al (1995), Machado et al (1996) Ligninase Nigam et al (1987), Machado et al (1996) Mn-peroxidase Pal et al (1995), Machado et al (1996) Phenol oxidase Pal et al (1995), Machado et al (1996) Xylanase Jain ( The spectra of SSF of bagasse increased further with the report appearing on production of other products, like gibberllic acid. Tosmani et al (1997) compared gibberllic acid production in liquid fermentation with SSF.…”

“…were used for the protein enrichment of bagasse (Iyo & Antai 1991). Several other microbial cultures like Chaetomium cellulolyticum (Bravo et al 1994) and basidiomycetes strains (Nigam 1990, Nigam et al 1987 were also used for protein enrichment of bagasse.…”

“…They found that the application of gases during SSF without disrupting mycelial growth and substrate content was the key to the suitability of this technology. Bravo et al (1994) treated bagasse with water-or alkali-at threeliquid/solid ratio before using it as substrate for microbial protein production. The treatment significantly enhanced fungul growth compared to non-treated bagasse.…”

Otimização Dos Parâmetros De Hidrólise Enzimática Do Bagaço De Cana-De-Açúcar

“…Desta maneira, é possível afirmar que o pré-tratamento alcalino oxidativo foi eficaz na disponibilização da celulose ao ataque enzimático sendo um substrato adequado e economicamente viável, desde que os parâmetros de hidrólise sejam convenientemente ajustados. Bravo et al (1994) utilizaram tratamento alcalino do bagaço de cana em três razões sólido--líquido antes da utilização como substrato na produção de proteína microbiana. O tratamento proporcionou um aumento significativo no crescimento fúngico em comparação com o bagaço não tratado.…”