Purificación De Hidrolizado De Bagazo De Caña De Azúcar Con Carbón Activado Y Resinas De Intercambio Iónico Purification of Sugarcane Bagasse Hydrolysates Using Activated Charcoal and Ion-Exchange Resins

Sweet sorghum (Sorghum bicolor (L.) Moench) bagasse is a lignocellulosic material consisting mainly of hemicellulose and cellulose, a potential source of fermentable sugars. The present study aimed to optimize the hydrolysis of sweet sorghum bagasse to obtain the highest concentrations of xylose and glucose with the minimum amount of inhibitor compounds. Seven varieties of sweet sorghum bagasse were used for the hydrolysis experiment, carried out in three stages with a 2 3 Box-Behnken factorial design; the critical factors selected for both stages were H 2 SO 4 and H 2 O 2 concentrations, time and liquid-solid ratio (LSR). The alkaline hydrolysis was carried out with a subsequent enzymatic hydrolysis using 0.4 mL cellulose and 0.5 mL beta-glucosidase. The optimum conditions for acid hydrolysis were H 2 SO 4 (1.375 % w/v), time (36 min) and LSR (4.9:1 v/w of bagasse) resulting in values of 11.55 g/L glucose and 41.27 g/L xylose, respectively; for alkaline hydrolysis H 2 O 2 (4.5 % w/v), time (45 h) and LSR (16:1 v/w of bagasse) were the optimum values. Under these conditions, 65.96 g/L glucose concentration was obtained. Validation of the model indicated no difference between predicted and observed values in the optimization of the hydrolysis process.

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Optimization of Hydrolysis Process to Obtain Fermentable Sugars from Sweet Sorghum Bagasse Using a Box–Behnken Design

Partida-Sedas

Montes-García

Carvajal-Zarrabal³

et al. 2016

Sugar Tech

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Vázquez

Oliva

Téllez-Luis

et al. 2007

Bioresource Technology

135

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Detoxification of hemicellulosic hydrolyzate from olive tree pruning residue

Mateo

Roberto²,

Sánchez

et al. 2013

Industrial Crops and Products

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Purificación De Hidrolizado De Bagazo De Caña De Azúcar Con Carbón Activado Y Resinas De Intercambio Iónico Purification of Sugarcane Bagasse Hydrolysates Using Activated Charcoal and Ion-Exchange Resins

Cited by 5 publications

References 12 publications

Optimization of Hydrolysis Process to Obtain Fermentable Sugars from Sweet Sorghum Bagasse Using a Box–Behnken Design

Optimization of Hydrolysis Process to Obtain Fermentable Sugars from Sweet Sorghum Bagasse Using a Box–Behnken Design

Hydrolysis of sorghum straw using phosphoric acid: Evaluation of furfural production

Detoxification of hemicellulosic hydrolyzate from olive tree pruning residue

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