Seasonal Nutritional Profile of Gelidium corneum (Rhodophyta, Gelidiaceae) from the Center of Portugal

Foods

Mendelson Martins¹  Leonel Pereira²  Mário Cavaco³  Marta V. Freitas³  Teresa Mouga³  Susana Bernardino³  Adriana Duarte³  Clélia Afonso³ 

[1] ESTM—School of Tourism and Maritime Technology, Polytechnic of Leiria, Rua do Conhecimento 4, 2520-614 Peniche, Portugal;MARE—Marine and Environmental Sciences Centre, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal;MARE—Marine and Environmental Sciences Centre, ESTM, Polytechnic of Leiria, Edifício CETEMARES, Av. Porto de Pesca, 2520-641 Peniche, Portugal;

关键词: red seaweeds;    total protein;    carbohydrates;    total lipids;    heavy metals;    antioxidant capacity;   

DOI  :  10.3390/foods10102394

来源: DOAJ

【 摘 要 】

Gelidium corneum is a well-known agarophyte, harvested worldwide for its high agar quality. However, the species also exhibits an interesting nutritional profile, but with seasonal variations. 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, respectively) 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.

【 授权许可】

Unknown