Nutritional and Phyto-Therapeutic Value of the Halophyte <i>Cladium mariscus</i> L. (Pohl.): A Special Focus on Seeds
Maria João Rodrigues | Luísa Custódio | Débora Mecha | Gokhan Zengin | Zoltán Cziáky | Gyula Sotkó | Catarina Guerreiro Pereira
This work searched for the phyto-therapeutic potential and nutritional value of seeds from the halophyte <i>Cladium mariscus</i> L. (Pohl.), aiming at its use as a source of bioactive ingredients for the food industry. Hence, the nutritional profile, including minerals, of seeds biomass was determined; food-grade samples were prepared, and their phytochemical fingerprinting assessed. Extracts were evaluated for <i>in vitro</i> antioxidant potential, inhibitory capacity towards enzymes related to neuroprotection, diabetes, and hyperpigmentation, and anti-inflammatory properties, along with a toxicological assessment. Sawgrass seeds can be considered a proper nutritional source with a good supply of minerals. All extracts had a high level of total phenolics (65.3–394.4 mg GAE/g DW) and showed a chemically rich and diverse profile of metabolites that have several biological properties described (e.g., antioxidant, anti-inflammatory). Extracts had no significant toxicity (cell viabilities > 80%) and were overall strong antioxidants (particularly at radical scavenging and reducing iron), effective tyrosinase inhibitors (55–71 mg KAE/g DW), showed anti-inflammatory properties (30–60% NO decrease), and had moderate capacity to inhibit enzymes related to neuroprotection (AChE 3.7–4.2, BChE 4.3–6.0 mg GALE/g DW) and diabetes (α-glucosidase 1.0–1.1, α-amylase 0.8–1.1 mmol ACAE/g). Altogether, results suggest that sawgrass seeds have the potential to be exploited as a new food product and are a reservoir of bioactive molecules with prospective applications as ingredients for value-added, functional, and/or preservative food products.
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