Study of thermal treatment combined with radiation on the decomposition of polysaccharides in sugarcane bagasse

Duarte, C.L.; Ribeiro, M.A.; Oikawa, Hisashi; Mori, M.N.

doi:10.1016/j.radphyschem.2012.06.019

Cited by 7 publications

(3 citation statements)

References 14 publications

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“…Similarly, the recommended method for bioethanol production from potato peels is composed of the same co-culture treatment on feedstock irradiated at 75 kGy followed by the dilute acid hydrolysis using 6 % (v/v) H 2 SO 4 at 120°C for 60 min. These results agreed with those obtained by Duarte et al (2012) and Duarte et al (2013), who found that the combination of dilute acid hydrolysis and irradiation pretreatment of sugarcane bagasse resulted in improving the bioethanol production. Ribeiro et al (2013) also stated that the free radicals produced by interaction of high-energy radiation with polysaccharides resulted in decreasing the degree of polymerization and increasing the carbonyl content due to the chain cleavage in the cellulose and hemicelluloses molecules, in addition to the decrease in the formation of by-products such as furfural, hydroxymethyl-furfural and acetic acid, which affect the growth of fermentative microorganisms.…”

Section: Effect Of Combining Dilute Acid Hydrolysis With Gamma Irradisupporting

confidence: 92%

Microbial Production of Bioethanol from Gamma Irradiated Sugarcane Bagasse and Potato Peels

2015

Egypt. J. Microbiol.

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ECENTLY, with growing crisis in fossil fuel and the ………consequent of environmental pollution problems worldwide, bioethanol has become one of the most promising biofuels and many researchers have worked on improving the efficacy of the bioethanol production process. This work was concerned with producing bioethanol from low-cost raw agro-industrial feedstock (sugarcane bagasse and potato peels) and utilizing radiation technology to increase conversion rate of these materials to bioethanol. Both of sugarcane bagasse and potato peels were acid-hydrolyzed and resulted hydrolysates were fermented by either Zymomonas mobilis ATCC 29191, Saccharomyces cerevisiae ATCC 7754, or both organisms, cocultured (1:1). The effect of gamma irradiation on bioethanol production was studied by exposing the feedstock to different doses of gamma rays (0, 25, 50 75 kGy). Effect on combining gamma irradiation with acid treatment of feedstock on bioethanol production was also investigated. From sugarcane bagasse, the highest achieved final bioethanol concentration (15.4 gL -1 ) was obtained from the combined pretreatment by irradiation with 75 kGy followed by hydrolysis with 2 % (v/v) H 2 SO 4 at 120°C for 60 min and fermented with co-culture (1:1) of Z. mobilis ATCC 29191 and Sacch. cerevisiae ATCC 29191. On the other hand, from potato peels the highest bioethanol concentration (12.1 g L -1 ) was obtained from combined pretreatment by irradiation with 75 kGy and hydrolyzed by 6 % (v/v) H 2 SO 4 at 100°C for 60 min then fermented with co-culture (1:1). Keywords:Saccharomyces cerevisiae ATCC 7754, Zymomonas mobilis ATCC 29191, Bioethanol, Feedstock, Gamma irradiation, Dilute acid hydrolysis.The rising concern over depleting fossil fuel and greenhouse gas limits has resulted in a high level of interest in non-conventional fuel originating from biorenewable sources including sugars, starches and lignocellulosic materials. The importance of the bioethanol production has increased in the last few years, but cost of production is still interfering with the deployment of this new technology, where the cost of used raw materials (sugar and starch-containing materials) represents about 40-70% of the total production cost. Using less valuable materials, like lignocellulosic agricultural waste, could significantly reduce the production

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Section: Effect Of Combining Dilute Acid Hydrolysis With Gamma Irradisupporting

confidence: 92%

Microbial Production of Bioethanol from Gamma Irradiated Sugarcane Bagasse and Potato Peels

2015

Egypt. J. Microbiol.

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“…Treatments for deconstruction of the lignocellulosic structure are frequently employed in the use of biomass as sugar's source for ethanol production and can generate besides soluble sugars, other sources such as furan derivatives, organic acids, and phenolic compounds that can act as xylanases inhibitors, as described for cellulase [121].…”

Section: Metal Ions Microorganism Refereesmentioning

confidence: 99%

“…Significant inhibition of xylanase activity by vanillic acid, syringic acid, acetosyringone, and syringaldehyde has been observed [121]. Boukari et al [122] reported that endoxylanase from Thermobacillus xylanilyticus was inhibited by phenolic compounds, including cinnamic acid, p-coumaricacid, caffeic acid, ferulic acid, and 3, 4, 5-trimethoxy-cinnamic acid by the noncompetitive multisite inhibition mechanism.…”

Section: Metal Ions Microorganism Refereesmentioning

confidence: 99%

Effect of Metal Ions, Chemical Agents and Organic Compounds on Lignocellulolytic Enzymes Activities

Pereira¹,

Giese²,

Moretti³

et al. 2017

Enzyme Inhibitors and Activators

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Radiation processed polysaccharides in food production, preservation and packaging applications

Mukta

Islam

Dina

et al. 2022

Radiation-Processed Polysaccharides

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Study of thermal treatment combined with radiation on the decomposition of polysaccharides in sugarcane bagasse

Cited by 7 publications

References 14 publications

Microbial Production of Bioethanol from Gamma Irradiated Sugarcane Bagasse and Potato Peels

Microbial Production of Bioethanol from Gamma Irradiated Sugarcane Bagasse and Potato Peels

Effect of Metal Ions, Chemical Agents and Organic Compounds on Lignocellulolytic Enzymes Activities

Radiation processed polysaccharides in food production, preservation and packaging applications

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