The Effect of Substrate Concentration on Bioactive Compound of Maltodextrin (Based on Sweet Purple Potato Starch)
Amran Laga, Husnul Hatimah, Andi Dirpan, Muspirah Djalal, Muhpidah

Departement of Agriculture Technology, Hasanuddin University, Perintis Kemerdekaan KM.10, Makassar, Indonesia

Abstract

Maltodextrin production enzymatically through the liquefaction process of purple sweet potato starch. Maltodextrin has good solubility, can form films, has low hygroscopicity, acts as a dispersing agent, inhibits crystallization, and has strong binding power. This study aims to determine the best substrate concentration for the duration of the maltodextrin liquefaction reaction. The research procedure with variations in substrate concentration (20%, 25%, 30%, 35%) on the liquefaction time of maltodextrin. The best variation of substrate concentration in terms of the solubility level of purple sweet potato starch maltodextrin concentration of 30% liquefaction 40 minutes is based on the parameters of reducing sugars, DE, viscosity, anthocyanin, antioxidant activity (IC50), each around 121.28 g/L- 44.52%- 42.20 cP- 1.96 mg/L- 4654.01 mg/L. The best variations of substrate concentration in terms of the bioactive compounds of maltodextrin purple sweet potato starch are 35% liquefaction concentration of 20 minutes based on anthocyanin parameters, IC50 antioxidant activity, reducing sugars, DE, the viscosity of each around 2.74 mg/L- 2273.7 mg/L- 105.79 g/L- 38.045%, 45.24 cP.

Keywords: Bioactive- Liquefaction- Maltodextrin

Topic: Food Microbiology and Biotechnology