원문정보
초록
영어
Alginates are quite abundant as a major structural component and as the complex polysaccharide comprising up to 40% in brown seaweed (Phaeophyceae). To obtain monomeric sugar and other derivatives from alginate, it must be prepared by break down the polysaccharide structure into simple monosaccharide. Therefore, to produce the appropriate monomeric sugar and other compounds, depolymerization treatment of alginate is needed. The depolymerization concept of alginate will be done on raw brown seaweed and brown seaweed with catalyst added by subcritical water treatment. The experiment condition will be performed at 180 to 260 oC for the reaction temperatures and 1.0 to 5.5 MPa for the pressures. The ratio of material to water is 1:25 (w/v) and the reaction time of each condition will be maintained for 5 min. Analysis of monomeric sugar dissolved on hydrolysate water will be assessed by HPLC (High Performance Liquid Chromatography). The total organic carbon contained will be measured by Total Organic Carbon (TOC) analyzer. Total reducing sugar will be conducted using method from Miller (1959).