title: High-yield production of biosugars from Gracilaria verrucosa by acid and enzymatic hydrolysis processes.
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 7.47g/L (37.4%) and 10.63g/L (21.26%) of reducing sugars under optimal small (30mL) and large laboratory-scale (1L) 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.
authors: Department of Chemical, Biochemical, Chosun University, Gwnagju, Republic of Korea.
authors: Se Won
authors: SW
authors: Kim
authors: Research and Development Division, Hyundai Motor Group, Uiwang, Republic of Korea.
authors: Chae-Hwan
authors: CH
authors: Hong
authors: Research and Development Division, Hyundai Motor Group, Uiwang, Republic of Korea.
authors: Sung-Wan
authors: SW
authors: Jeon
authors: Department of Chemical, Biochemical, Chosun University, Gwnagju, Republic of Korea. Electronic address: shinhj@chosun.ac.kr.
authors: Hyun-Jae
authors: HJ
authors: Shin
mesh_terms: D019149:Bioreactors; D002241:Carbohydrates / Q000032:analysis / Q000096:biosynthesis / Q000737:chemistry; D044724:Gracilaria / Q000737:chemistry / Q000378:metabolism; D006868:Hydrolysis
chemical_list: D002241:Carbohydrates
keywords: Chemical hydrolysis; Enzymatic hydrolysis; Gracilaria verrucosa; Reducing sugars; Seaweeds