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Publication
Elemental and Nutritional Characterisation with Vibrational Spectroscopy Analysis of Ulva sp., Gracilaria multipartita, and Sargassum muticum
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Advisor(s)
Abstract(s)
Macroalgae are rich in bioactive compounds with potential therapeutic appli cations, including antioxidant, antimicrobial, and nutritional properties. In this study,
the biochemical composition of three seaweed species—Ulva sp., Gracilaria multipartita,
and Sargassum muticum—was analysed, focusing on their mineral content and macronu trient profile. The ash, protein, fibre, lipid, and carbohydrate contents ranged from (dw)
26.56 to 33.53 g/100 g, 10.13 to 18.43 g/100 g, 0.11 to 0.19 g/100 g, 5.83 to 10.88 g/100 g,
and 42.48 to 53.27 g/100 g, respectively. The findings indicate that the species studied
are excellent sources of essential minerals, particularly magnesium, potassium, calcium,
sodium, and trace elements, such as iron, zinc, copper, and manganese. Sargassum muticum
exhibited the highest mineral content and thus holds significant promise for further ex ploration in biomedical and therapeutic contexts. FTIR, FT-RAMAN, and FT-NIR analysis
highlight the presence of proteins, lipids, carbohydrates, including cell wall phycocolloids,
and phenolic compounds. These results underscore the potential of macroalgae as natural
sources of bioactive compounds for health-related applications, highlighting their value
beyond traditional dietary supplementation.
Description
Keywords
proximal composition mineral content nutritional profile FT-NIR FTIR-ATR FT-RAMAN
Citation
Mouga, T.; Almeida, M.M.; Pitacas, F.I.; Rodrigues, A.M.; Vitória, C.; Anjos, O. Elemental and Nutritional Characterisation With Vibrational Spectroscopy Analysis of Ulva sp., Gracilaria multipartita, and Sargassum muticum. Appl. Sci. 2025, 15, 4212. https://doi.org/10.3390/ app15084212
Publisher
MDPI