원문정보
초록
영어
Seaweed is a third generation biomass of bioethanol production. There are three types of seaweeds such as brown, green and red algae. Especially, Gelidium amansii, red seaweed, has advantage of high carbohydrate contents converted to fermentable sugar such as glucose and galactose. To obtain high ethanol concentrations, agar and cellulose have to be converted to galactose and glucose. Therefore, pretreatment is essential process for high reducing sugar production. In this study, thermal acid hydrolysis was performed with autoclave and sulfuric acid each treatment. In order to optimize pretreatment using Gelidium amansii, experiment was carried out with variables such as seaweed slurry contents, acid concentrations and treatment time. Optimal pretreatment condition was determined as follows: 8% (w/v) seaweed slurry with 113 mM sulfuric acid by autoclave at 121℃ for 30 min. Saccharification yields of 39.6% of fermentable sugar were obtained from Gelidium amansii.