PENGARUH PERLAKUAN PENDAHULUAN TERHADAP SIFAT FISIKOKIMIA PATI UMBI GEMBILI (Dioscorea esculenta L.) DAN UMBI TALAS (Colocasia esculenta L.)

The results of research showed that the types of tubers had a significant effect on chemical characteristics (moisture and amylose), the concentration of salt solution had a significant effect on physical characteristics (whiteness level) and chemical characteristics (starch), and the interaction between salt concentration and types of tubers significantly affected the value of chemical characteristics (amylose and crude fiber). Based on chemical characteristics (the highest starch), the concentration of 14% salt concentration was the best treatment for pre-treatment of lesser yam and taro tuber starch extraction. The characteristics of lesser yam and taro tuber starch with 14% salt concentration were yield (15,64% and 19,17%), whiteness level (89,08 and 90,47), moisture (12,27% and 10,24%), ash (0,29% and 0,22%), starch (80,95% and 79,08%), amylose (18,65% and 52,63%), crude fiber (0,53% and 0,89%).