By: Faridah DN, Rahayu WP, Apriyadi MS
Department of Food Science and Technology-Bogor Agricultural University
Arrowroot starch is able to be modified to produce resistant starch (RS), which was according to some studies showed physiological functions like food fiber. One of efforts to increase the resistant starch contents was through acid hydrolysis and autoclaving-cooling cycling treatments. Arrowroot starch modification was conducted on 7 different treatments, which was consisted of starch without hydrolysis and with hydrolysis by 1.1 and 2.2 N HCl for 2, 4, and 6 hours which was continued with3 cycles of autoclaving-cooling treatment (physically modification). Based on the starch digestibility, the acid hydrolyzed starch which was hydrolyzed by 2.2 N HCl for 2 hours and continued with autoclaving-cooling cycling treatment (3 cycles) had the lowest digestibility, which was 22.04%, and occurred to the increase of the amylase, dietary fiber, and resistant starch contents. The increase of the amylase contents contributed to increase the total dietary fiber and RS contents. Starch hydrolysis process, which was continued with autoclaving-cooling (3 cycles), could increase the dietary fiber and RS contents up to 4.1 and 4.4 times, respectively, than native starch.
Keywords: arrowroot, resistant starch, acid hydrolysis, autoclaving-cooling cycling.
Dipresentasikan pada Seminar PATPI, Jakarta-Indonesia, November 3-4th 2009.
Proceeding ISBN 978-979-99570-5-4