Pustaka Ilmiah Universitas Padjadjaran

Abstrak

Isolation And Modification Of Durian Seed (Durio Zibethinus Murr) Starch By Acid Hydrolysis

Durian (Durio zibethinus Murr) seeds has been found as fruit refuses. Durian has large size which has high content of starch. The purpose of this research was to isolate the starch from durian seeds, and modified it through acid hydrolysis. The isolation of native starch was conducted by using conventional methods, while the modification was by acid hydrolysis using hydrochloric acid (HCl) 2N. Starch quality testing were include microscopic, solubility, acidity, loss on drying, ash content, and microbial limit. Physicochemical properties characterization were include flowability, density, bulk gelatinization temperature and viscosity, amylose content, and degree of whiteness. The results showed that isolation process gave a yield value of 17.68% starch. Starch quality investigation showed that the starch met the Indonesian Pharmacopoeia standards. Brabender viscoamylograph testing showed an increase in viscosity, showing that acid modified durian seed starch had a higher viscosity level compared to native one. Modification of starch also improved its flowability.