Jornal de Nanomedicina e Nanotecnologia

Abstrato

Physical and Chemical Characterisics of Starch Nano crystal from Purple Sweet Potato var. Ayamurasaki

Elisa Julianti1*,2, Zulkifli Lubis1, Adrian Hilman1,2, Abdul Rahman Nasution

The natural starch of purple sweet potato has the disadvantage of being easily hydrated, losing viscosity, and producing a fibrous and highly cohesive starch paste. Modification of starch in the form of nanocrystals will produce starch with low suspension viscosity at relatively high concentrations, high binding capacity due to the large active surface area. In this study, an evaluation was carried out on the physical and chemical characteristics of purple sweet potato starch nano crystals obtained by acid hydrolysis using 3 different acids, namely acetic acid, citric acid, and lactic acid. The results showed that the highest yield of starch nanocrystals was obtained from starch from acetic acid hydrolysis.