Abstract
This study evaluated the functional properties of chia mucilage powder (MCP) and gel (MCG) as a phosphate replacers in low-fat Bologna sausages. Four treatments were produced without phosphates (F1–2% MCP; F2–2% MCG; F3–4% MCP; F4–4% MCG) and two with 0.25% phosphate (F5–2% MCG and F6–4% MCG) besides control (20%-fat-0.5% phosphate). Samples containing mucilage were less firm and less chewy on day 0, except F3. Treatments containing 2% MCG were judged acceptable and provided better emulsion stability than those with MCP. Adding 4% MCP or MCG resulted in Bolognas with lower relaxation times and more restricted mobility and lowest sensorial acceptance characterized by the terms light brown and dark pink color (F4). The microscopy images exhibited less cohesive structure in treatments with 4% of MCG, suggesting the formation of a weaker bound protein network. Chia mucilage gel at 2%, due to its functional properties, has proven to be a feasible strategy to substitute 50% phosphate in low-fat Bologna sausages.
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