Hydrolysis of starch from various tuber using acetic acid as an alternative sugar

In the beginning, tubers have only known as a source of starch. But later on, existence process innovation acquaints other product from tuber, such liquid sugar. this research, ganyong, suweg, uwi, talas, and gembili were analyzed to know its potential being material for sugar alternative. The included starch production hydrolysis using an acid catalyst. Then content density analysed Luff-Schoorl pycnometer respectively. results showed that highest reducing was 2.8598% which obtained in ganyong with 6% acetic lowest sample (0.4816%) addition catalyst 2%. Besides, research confirmed higher concentration catalyst, alternative tubers.