title: Application of solid-acid catalyst and marine macro-algae Gracilaria verrucosa to production of fermentable sugars.
abstract: In this study, the hydrolysis of marine macro-algae Gracilaria verrucosa with a solid-acid catalyst was investigated. To optimize the hydrolysis, four reaction factors, including liquid-to-solid ratio, catalyst loading, reaction temperature, and reaction time, were investigated. In the results, the highest total reducing sugar (TRS) yield, 61 g/L (51.9%), was obtained under the following conditions: 1:7.5 solid-to-liquid ratio, 15% (w/v) catalyst loading, 140 °C reaction temperature, and 150 min reaction time. Under these conditions, 10.7 g/L of 5-HMF and 2.5 g/L of levulinic acid (LA) were generated. The application of solid-acid catalyst and marine macro-algae resources shows a very high potential for production of fermentable sugars.
authors.affiliation: Department of Biotechnology, Pukyong National University, Busan 608-737, South Korea. Electronic address: gtjeong@pknu.ac.kr.
authors.forename: Gwi-Taek
authors.initials: GT
authors.lastname: Jeong
authors.affiliation: Department of Biotechnology, Pukyong National University, Busan 608-737, South Korea.
authors.forename: Sung-Koo
authors.initials: SK
authors.lastname: Kim
authors.affiliation: Department of Biotechnology and Bioengineering, Chonnam National University, Gwangju 500-757, South Korea; Interdisciplinary Program of Graduate School for Bioenergy and Biomaterials, Chonnam National University, Gwangju 500-757, South Korea.
authors.forename: Don-Hee
authors.initials: DH
authors.lastname: Park
mesh_terms: D000143:Acids / Q000378:metabolism*; D059001:Aquatic Organisms / Q000378:metabolism*; D001709:Biotechnology / Q000379:methods*; D002241:Carbohydrates / Q000096:biosynthesis*; D002384:Catalysis; D005285:Fermentation; D044724:Gracilaria / Q000378:metabolism*; D006868:Hydrolysis; D013696:Temperature; D013997:Time Factors
chemical_list: D000143:Acids; D002241:Carbohydrates
keywords: Fermentable sugar; Gracilaria verrucosa; Macro-algae; Solid acid catalyst