Physicochemical and Sensory Properties of Pumpkin (Cucurbita moschata D) and Arrowroot (Marantha arundinaceae L) Starch-based Instant Porridge

Abstract

Pumpkin is a potential source of vitamin A and antioxidant. Arrowroot starch as the source of carbohydrates contains a low glycemic index. However, the utilization of pumpkin and arrowroot starch as the source of food products is still limited. Both ingredients can be processed into nutritious food with practical servings. The objective of the research was to investigate the effect of pumpkin and arrowroot starch ratio and the rotation speed of the drum dryer on the physiochemical properties and the acceptability of the instant porridge. The various ratios of pumpkin and arrowroot starch in the study were 1:1, 2:1, 3:1, 4:1, and 5:1. The process of making instant porridge from pumpkin and arrowroot starch was using a drum dryer with a rotation speed at 1 and 1.5 rpm and a saturated steam pressure at 1 bar. The porridge yield was tested for physiochemical properties and acceptability. The variables of pumpkin to arrowroot starch and the rotation speed of the drum dryer affected the physical and chemical properties, and the acceptability of the instant porridge yielded. Based on amylograph characteristics, the instant porridge had amylograph profile type C, except on pumpkin and arrowroot starch in a ratio of 5:1 with drum dryer rotation speed at 1 rpm. The best and most acceptable instant porridge according to the panelists was obtained at the ratio of 5:1 with 1.5 rpm speed.