Year: 2024
Type: article
Abstract: This study examined the effects of the inclusion of mung bean protein (MBP) on the direct expansion characteristics of corn starch during twin-screw extrusion. Six blends of corn starch and MBP isolate (0%, 5%, 10%, 15%, 20%, and 25% w/w) were hydrated to three different moisture contents (MCs) (16%, 19%, and 21% w.b.). The blends were extruded using a twin-screw extruder at three screw speeds (SSs) (300, 400, and 500 rpm). The resulting extrudates were evaluated for their water solubility index, water absorption index, expansion ratio (ER), true density, unit density, and porosity. As the protein content increased, the porosity of the extrudates increased. The ER of all extrudates ranged from 2.90 to 5.46, with the largest ER observed at an SS of 400 rpm, an MC of 19%, and 25% MBP inclusion. The porosity of the extrudates ranged from 1.79% to 11.42%. SS and protein content had a significant impact (p < 0.05) on the porosity and ER of the extrudate. PRACTICAL APPLICATION: This work provides valuable information for the industry on utilizing mung bean protein in direct expanded corn starch-based extruded snacks. The information could be useful in the development of high-protein extruded snacks and breakfast cereals.
Source: Journal of Food Science
Institution: Washington State University
Language: English
Subfield: Nutrition and Dietetics
Field: Nursing
Domain: Health Sciences
SDG: Zero hunger
Open Access status: hybrid
Estimated APC paid: $4,330
Funder: U.S. Department of Agriculture
OpenAlex ID: W4404039029