Innovative Dietary Solutions for Vegans: Macroalgae Amino Acids for Differentiated Nutrition
2025
Maria Carpena | Aurora Silva | Franklin Chamorro | Antia G. Pereira | Francisca Santos | Rafael Nogueira-Marques | Cristina Soares | Maria Fátima Barroso | Miguel A. Prieto
Veganism is gaining popularity due to its ethical, health, and environmental benefits. However, many vegans face challenges in obtaining a complete essential amino acid profile from plant sources, making diversified protein sources crucial for balanced nutrition. Macroalgae, a nutrient-rich food traditionally consumed in Asia, offers a solution by providing both essential and non-essential amino acids vital for optimal health. This study analyzed the amino acid profiles of seven macroalgae species from the northwest coast of the Iberian Peninsula using HPLC with fluorescence detection. All samples contained essential amino acids, although tryptophan was mostly absent. Brown algae displayed higher aspartate and glutamate levels, contributing to the “umami” flavor, while red algae exhibited higher histidine and lysine concentrations. These findings highlight macroalgae as a valuable food source for vegan diets, offering a comprehensive amino acid profile essential for personalized nutrition plans.
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