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Title: Seasonal Nutritional Profile of Gelidium corneum (Rhodophyta, Gelidiaceae) from the Center of Portugal
Authors: Cavaco, Mário
Duarte, Adriana 
Freitas, Marta V.
Afonso, Clélia
Bernardino, Susana
Pereira, Leonel 
Martins, Mendelson
Mouga, Teresa 
Keywords: Antioxidant capacity; Carbohydrates; Heavy metals; Red seaweeds; Seasonal variations; Total lipids; Total protein
Issue Date: 2021
Publisher: MDPI
Project: MAR-04.03.01-FEAMP-0101 
Serial title, monograph or event: Foods
Volume: 10
Issue: 10
Abstract: Gelidium corneum is a well-known agarophyte, harvested worldwide for its high agar qual-ity. However, the species also exhibits an interesting nutritional profile, but with seasonal varia-tions. Therefore, to evaluate the nutritional value of G. corneum, ash, crude protein, total lipids, and carbohydrates were analyzed at different times of the year. The heavy metals mercury, arsenic, lead, cadmium, and tin, as well as iodine were also measured. Finally, the seasonal antioxidant capacity of G. corneum extracts was evaluated. Our results indicate that the biomass is rich in protein (up to 16.25 ± 0.33%) and carbohydrates (up to 39.5 ± 3.29%), and low in lipids (up to 2.75 ± 0.28%), and especially in the summer, the AI, TI indexes, n-6/n-3 and h/H ratios (0.93, 0.6, 0.88 and 1.08, respec-tively) are very interesting. None of the contaminants exceeded the legally established limits, and the iodine values were adequate for a healthy diet. Finally, the antioxidant capacity is fair, with the DPPH ≤ 10.89 ± 1.46%, and ABTS ≤ 13.90 ± 1.54% inhibition, FRAP ≤ 0.91 ± 0.22 AAE.g−1, and TPC ≤ 6.82 ± 0.26 GAE.g−1. The results show that G. corneum is an attractive resource, with potential use as food or as a food supplement. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
ISSN: 2304-8158
DOI: 10.3390/foods10102394
Rights: openAccess
Appears in Collections:I&D MARE - Artigos em Revistas Internacionais

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