Minor Biomass Particle Size for an Efficient Cellulose Accessibility and Enzymatic Hydrolysis. Issue 25 (6th July 2020)

• Record Type: Journal Article
• Authors: Fernandes, Érika S.; Bueno, Danilo; Pagnocca, Fernando C.; Brienzo, Michel
• Is Part Of: ChemistrySelect. Volume 5:Issue 25(2020)
• Page Start: 7627
• Page End: 7631
• Publication Date: 2020-07-06
• Subjects: acid pretreatment -- cellulose -- lignocellulosic material -- recalcitrance -- sugarcane; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202001008
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Sugarcane bagasse is a recalcitrance lignocellulosic material with difficult to structure disorganize and it has low cellulose accessibility, negatively influencing the enzymatic saccharification. This study identified the minor particle size that resulted in the efficient diluted acid pretreatment (10 % m/m, 121 °C/30 min) of sugarcane bagasse and a more recalcitrant material, that is external fraction (2 to 3 mm from the extremity, containing epidermis). Particle sizes were obtained by sieving sugarcane bagasse at 16 (1 mm), 24 (0.710 mm), 35 (0.425 mm), 60 (0.250 mm) and <60 mesh (<0.250 mm) on a sieve agitator. The decrease of the particle sizes led to an increase of cellulose accessibility. Both of the samples showed high accessibility after the pretreatment due to the particle size decrease. Accordingly, there was a better enzyme action, what increased the glucose yield with samples lower than 0.425 mm (35 mesh). Abstract : In this paper, different particle sizes of sugarcane bagasse and external fraction ranging of 16 mesh (1 mm) to <60 mesh (0.250 mm) were pretreated with diluted acid approach. The results observed indicated that to both bagasse and external fraction, the particle sizes lower than 0.425 mm (35 mesh) leads to the higher glucose yields, and the acid concentration was the determining factor for the highest xylose yield among the observed variables, such as solid/liquid ratio and reaction time.