High-yield production of biosugars from Gracilaria verrucosa by acid and enzymatic hydrolysis processes. (November 2015)

• Record Type: Journal Article
• Authors: Kim, Se Won; Hong, Chae-Hwan; Jeon, Sung-Wan; Shin, Hyun-Jae
• Is Part Of: Bioresource technology. Volume 196(2015)
• Page Start: 634
• Page End: 641
• Publication Date: 2015-11
• Subjects: Reducing sugars -- Seaweeds -- Chemical hydrolysis -- Enzymatic hydrolysis -- Gracilaria verrucosa; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2015.08.016
• Languages: English
• ISSNs: 0960-8524

Abstract

Abstract : Graphical abstract: High-yield production of biosugars from Gracilaria verrucos by acid and enzymatic hydrolysis processes: a mass balance approach. Highlights: Red algae was used for biosugars production by a combined hydrolysis approach. Biosugar yield was 0.427 g/g for combined hydrolysis and conversion was 57.2%. Mass balance of the experimental results from the combined processes was analyzed. Abstract: Gracilaria verrucosa, the red alga, is a suitable feedstock for biosugar production. This study analyzes biosugar production by the hydrolysis of G. verrucosa conducted under various conditions (i.e., various acid concentrations, substrate concentrations, reaction times, and enzyme dosages). The acid hydrolysates of G. verrucosa yielded a total of 7.47 g/L (37.4%) and 10.63 g/L (21.26%) of reducing sugars under optimal small (30 mL) and large laboratory-scale (1 L) hydrolysis processes, respectively. Reducing sugar obtained from acid and enzymatic hydrolysates were 10% higher, with minimum by-products, than those reported in other studies. The mass balance for the small laboratory-scale process showed that the acid and enzymatic hydrolysates had a carbohydrate conversion of 57.2%. The mass balance approach to the entire hydrolysis process of red seaweed for biosugar production can be applied to other saccharification processes.