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Research Article Open access CC BY 4.0

Effect of Heat Curing of Film-forming Solution on the Properties of Soy Protein Films

Tasmia Bari, Md. Monirujjaman, Farzana Akter, Md. Shahriar Alam

Asian Food Science Journal · pp. 1–7 · Published 7 Jun 2023

10.9734/afsj/2023/v22i7642

Abstract

This study aimed to investigate the impact of heat treatment on the properties of soy protein isolate film-forming solutions. The solutions, consisting of soy protein isolate, glycerol, and phosphate buffer solution (pH 7.4), were subjected to heat treatment at 65, 75, and 85°C for 2, 4, or 6 h. The resulting films were then analyzed for tensile strength, elongation at break, film solubility, color parameters, and transparency. The results indicated that increasing the heat-curing temperature increased tensile strength, film transparency, and yellowish color in the films, as well as decreased water solubility and elongation at break. Notably, the film cured at 85°C for 2 h exhibited the highest tensile strength, film solubility, and elongation at break compared to both the control and other heat-cured films. However, the film heated at 75°C showed a better elongation at break. Overall, the findings suggest that heat curing of film-forming solutions at temperatures between 75 and 85°C has the potential to improve the properties of soy protein isolate films.

Biodegradable film film-forming solution heat curing soy protein film tensile strength

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Cited by 4

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Yuejiao Xing, Haoran Zhu, Li Zheng · Critical Reviews in Food Science and Nutrition · 2025

Valorization of Surimi wash water for biodegradable edible film development from milkfish, snakehead and skipjack tuna

Andi Santi, Ikbal Syukroni, Arham Rusli · Brazilian journal of food technology/Brazilian Journal of Food Technology · 2026

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