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Potato protein-based meat analogues fortified with upcycled fruit flours: Functional, textural, and antioxidant
Ana Rita Pereira1, Vasco Trincão da Silva1, Duarte Torres2
1Science Faculty of Porto University, Chemistry and Biochemistry Department, Science Faculty, Porto University, Rua do Campo Alegre, s/n, 4169-007 Porto, Portugal; LAQV-REQUIMTE, Chemistry, and Biochemistry Department, Science Faculty, Porto University, Rua do Campo Alegre, s/n, 4169-007 Porto, Portugal.
Abstract:
This study aims to evaluate potato protein (PP) as a substitute for egg white protein (EWP) in vegan formulations. Fruit flours, including orange peel, pineapple peel, and pineapple core, were incorporated to assess their effects on the techno-functional and textural properties, and on the antioxidant potential of plant-based products. Fruit flours improved the performance of PP-based emulsions. More negative zeta potential values and an increased emulsifying stability index were observed in flour-containing formulations. A significant increase in the hardness parameter of the PP-based formulations containing fruit flour was observed, correlated with the higher water-holding capacity. Although fruit flours increased the phenolic content, the enhancement of antioxidant activity was dependent on the fruit flour. Colorimetric analysis showed protein source- and flour-dependent effects, with lower CIELAB values in PP-based samples. Overall, this work highlights the potential of PP and fruit flours for developing functional and sustainable plant-based food products.
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