Development and Evaluation of Buckwheat-Fortified Mung Bean Extrudates: Effects on Physicochemical, Textural, and Antioxidant Properties
Girish Ningappa Mathad and Jenshinn Lin* Author for corresponding; e-mail address: jlin@mail.npust.edu.tw
Volume: Vol.52 No.6 (November 2025)
Research Article
DOI: https://doi.org/10.12982/CMJS.2025.100
Received: 6 May 2025, Revised: 16 October 2025, Accepted: 7 November 2025, Published: 26 November 2025
Citation: Mathad G.N. and Lin J., Development and evaluation of buckwheat-fortified mung bean extrudates: Effects on physicochemical, textural, and antioxidant properties. Chiang Mai Journal of Science, 2025; 52(6): e2025100. DOI 10.12982/CMJS.2025.100.
Graphical Abstract
Abstract
This study investigated the effect of incorporating buckwheat (10%, 20%, and 30%) into mung bean-based extrudates on their physicochemical, textural, and antioxidant properties. Extrusion was carried out using a single-screw collet extruder at 110°C and screw speeds of 320, 350, and 380 rpm. Buckwheat addition significantly decreased lightness (L*), expansion ratio (ER), and water solubility index (WSI), while increasing redness (a*), yellowness (b*), bulk density (BD) and oil absorption capacity (OAC). Proximate composition showed some significant changes in nutritional composition. Antioxidant activity improved significantly, with total phenolic content (TPC) rising from 69.19 to 128.8 mg GAE/100 g and DPPH radical scavenging activity from 71.60 to 86.46%. Sensory evaluation showed the highest acceptability for 20-30% buckwheat formulations, particularly in colour, crispiness and overall taste. Scanning electron microscopy (SEM) revealed increased surface roughness and cross linking at higher buckwheat levels, indicating modified starch protein interactions. These findings demonstrate that buckwheat fortification enhances both the nutritional quality and sensory appeal of mung bean based extrudates, supporting its potential for developing value added gluten free snacks.
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