Production of Biosugar from Red Macro-algae Eucheuma cottonii using Acid-hydrolysis
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초록
In this study, biosugar production by the red-algae Eucheuma cottonii was investigated using dilute sulfuric acid-catalyzed hydrolysis and data analysis by response surface methodology. This approach yielded 25.8 g/l total reducing sugar under the conditions of 160.1oC, 1% (v/v) sulfuric acid, and 13.1 min. The sugar concentration showed a linear inverse correlation with the combined severity factor (CSF) of the reaction conditions. CSF was calculated as log(t·exp[(TH − TR)/14.75]) – pH, where t is the coupling reaction time, TH is the target temperature, and TR is the reference temperature (100°C). In addition, levulinic acid production showed a linear positive correlation with CSF. E. cottonii may represent a useful feedstock for sugar production in the field of bioenergy.
Abstract
In this study, biosugar production by the red-algae Eucheuma cottonii was investigated using dilute sulfuric acid-catalyzed hydrolysis and data analysis by response surface methodology. This approach yielded 25.8 g/l total reducing sugar under the conditions of 160.1oC, 1% (v/v) sulfuric acid, and 13.1 min. The sugar concentration showed a linear inverse correlation with the combined severity factor (CSF) of the reaction conditions. CSF was calculated as log(t·exp[(TH − TR)/14.75]) – pH, where t is the coupling reaction time, TH is the target temperature, and TR is the reference temperature (100°C). In addition, levulinic acid production showed a linear positive correlation with CSF. E. cottonii may represent a useful feedstock for sugar production in the field of bioenergy.
참고문헌 (12)
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