Plant-Based Burgers with Reduced Texture Additives: A Comparative Study of Methylcellulose and Sodium Alginate

The limited number of additives in plant-based burgers is related to clean label consumer perception, which influences purchase intention. Starch is typically combined with other texturing agents to replicate the texture and mouthfeel of meat burgers. It is necessary to reformulate these products following consumers' trends, who prefer healthier products with fewer additives. Two hydrocolloids with significant commercial application and different functionality were evaluated: methylcellulose (M) or sodium alginate (SA). Four formulations were developed, two containing starch (M+S and SA+S) and two without starch (M and SA). The alginate burgers provided samples with high water retention capacity and a cohesive and adhesive texture, superior to the samples with methylcellulose, without the need to add starch, due to their stabilizing, thickening, and gelling properties derived from their "egg-crate" structure when gelled. Furthermore, sensory analysis indicated that the sodium alginate burgers had a softer and creamier texture. In contrast, starch removal in the methylcellulose burgers enhanced their appearance due to gel transparency and desirable textural properties, akin to those of meat. These results promote using a 3 g/100 g methylcellulose solution as the sole binding agent in soybean burgers to achieve a product with reduced additives.