Characteristics of jack bean tempeh hydrolysate protein as a function of spray drying temperature: effect of maltodextrin and gum arabic

Abstract

Coating materials and fluctuations in inlet temperature are crucial components of the encapsulation process, with both factors affecting the physical, chemical, and functional qualities. Therefore, this study aimed to determine the optimal properties of Jack Bean tempeh hydrolyzate using maltodextrin and Gum Arabic coating materials at a specific spray drying temperature. The experimental method consisted of 80% (w/w) maltodextrin, 20% (w/w) Gum Arabic, and a combination of both, with variations in inlet temperature at 140°C, 150°C, and 160°C. The results showed that 20% Gum Arabic treatment at a spray drying temperature of 150°C produced the best hydrolyzate characteristics of Jack Bean tempeh. Based on the SEM analysis, the morphology of the hydrolyzate particle had a spherical and wrinkled shape. Additionally, FTIR results showed no significant structural difference between the sample treatment and the uncoated control.