抄録
The amylopectin chain distribution of sago starch collected from Papua New Guinea (PNG) and the Philippines (PLP) was studied using a high-performance ion-exchange chromatograph (HPIC) equipped with a pulsed amperometric detector (PAD). The branch chain lengths with the degree of polymerization (DP) 6–12 (Gr1), DP 13–24 (Gr2), DP 25–36 (Gr3), and DP≧ 37 (Gr4) designated as short, intermediate1, intermediate2, and long amylopectin chains were 25% (Gr1), 58% (Gr2), 12% (Gr3), and 4% (Gr4) (peak area percentage) for PNG and 25% (Gr1), 60% (Gr2), 12% (Gr3), and 4% (Gr4) for PLP, respectively. Both PNG and PLP sago starches possessed a greater abundance of short amylopectin chains (Gr1) than those of corn and potato starches.