Exploring Phenylalanine Gels: Innovations in Food Gelling Agents
2025
Lorena Sofia Pepa | Cristina dos Santos Ferreira | María del Pilar Buera
Gelling agents are critical for food texture and stability; usually, polymeric substances are employed. Low-molecular-weight gelators (LMWG) like phenylalanine (PHE) form supramolecular gels. However, food applications are limited due to amino acid derivatization or gelling solvent. This study characterizes PHE, water, and propylene glycol solutions and their gelling capability when cooled or stirred. Gelation is faster at higher stirring speeds. Gel strength increases if pH is near the PHE isoelectric point or at higher PHE concentrations, which increases gel transition temperature. Solutions develop browning in xylose (XYL) presence via first-order kinetics, accelerated by increasing PHE or xylose concentration.
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