Cytoprotective effect of seaweeds with high antioxidant activity from the Peniche coast (Portugal)

Pintéus, Susete; Silva, Joana; Alves, Celso; Horta, André; Nádia, Fino; Rodrigues, Ana João; Mendes, Susana; Pedrosa, Rui

doi:10.1016/j.foodchem.2016.09.067

Cited by 103 publications

(95 citation statements)

References 31 publications

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“…Pinteus et al [25] have shown that the antioxidant activity of P. pavonica methanolic extract has almost the same value found in the P. pavonica acetone extract studied in this paper (IC 50 = 0.338 mg/mL). Kokabi et al [29] showed also that the methanolic extract from P. pavonica from Iran showed a value close to that found by our team (IC 50 = 410 ± 4.1 µg/mL).…”

Section: Discussionsupporting

confidence: 82%

“…Another team from Lebanon who examined the TPC of methanolic extract of P. pavonica, found a value of (10.76 ± 0.87) mg gallic acid equivalent/g extract. Pinteus et al [25] presented a value of (44.61 ± 0.01) mg gallic acid equivalent/g extract for the methanolic extract of P. pavonica from Portugal. The TPC of methanolic extract of Enteromorpha sp.…”

Section: Discussionmentioning

confidence: 99%

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Antioxidant and antimicrobial activities of Padina pavonica and Enteromorpha sp. from the Tunisian Mediterranean coast

Hlila¹,

Hichri²,

Mahjoub³

et al. 2017

JCLM

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Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Antioxidant and antimicrobial activities of Padina pavonica and Enteromorpha sp. from the Tunisian Mediterranean coast

Hlila¹,

Hichri²,

Mahjoub³

et al. 2017

JCLM

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“…Fucus vesiculosus was chosen based on previous studies that reported high antioxidant and high antimicrobial activities (Pinteus et al, 2015(Pinteus et al, , 2017. Codium spp.…”

Section: Gelatin Characterizationmentioning

confidence: 99%

“…These results were consistent with the literature, where Fucus sp. is known to be a source of natural antioxidants and polyphenols (Pinteus et al, 2017;Wang et al, 2012), while Codium spp. is known to be poor in antioxidant activity and polyphenol content (Augusto, Simoes, et al, 2016;Pinteus et al, 2017).…”

Section: Gelatin Characterizationmentioning

confidence: 99%

“…is known to be a source of natural antioxidants and polyphenols (Pinteus et al, 2017;Wang et al, 2012), while Codium spp. is known to be poor in antioxidant activity and polyphenol content (Augusto, Simoes, et al, 2016;Pinteus et al, 2017). The antioxidant activity of the FG solution could be explained by the peptide fraction of the fish gelatin (Haddar et al, 2012).…”

Section: Gelatin Characterizationmentioning

confidence: 99%

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Effect of tuna skin gelatin-based coating enriched with seaweed extracts on the quality of tuna fillets during storage at 4 °C

2017

IJFS

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Nowadays, consumers demand high quality food products with an extended shelf-life without chemical additives. Edible coatings (EC) containing natural compounds are a promising preservation technology for raw seafood without compromising fresh-like appeal and nutritional content. The aim of this work was to evaluate the effect of Thunnus obesus skin gelatin-based EC containing Codium spp. or Fucus vesiculosus extracts on raw tuna preservation. Three gelatin-based EC (gelatin (5 %) + glycerol (25 %); gelatin (5 %) + Codium spp. (1 %) + glycerol (25 %); gelatin (5 %) + Fucus vesiculosus (1 %) + glycerol (25 %)) were applied directly on the surface of tuna fillets. Functional properties of gelatin and gelatin-based EC containing seaweed extracts were also studied. The gelatin was extracted by an acid-swelling process in the presence/absence of pepsin, followed by subsequent heating/refrigeration, after a pre-treatment with NaOH. The type of acid, temperature and concentration of NaOH greatly influence the process yield. The higher extraction yield was achieved using acetic acid in the presence of pepsin by subsequent refrigeration, especially when skins were previously treated with NaOH (0.2 M). Tuna quality was assessed over 12 days of storage at 4 ± 1°C in terms of chemical and microbial indices. Results showed that tuna skin gelatin-based EC avoids tuna deterioration. Microbial growth, assessed by total viable counts, and total volatile basic nitrogen were maintained below the maximum limits recommended, contrarily to the control. Additionally, the use of EC increased the stability of red colour during storage.

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Redox‐Active Phenolic Compounds Mediate the Cytotoxic and Antioxidant Effects of Carpodesmia tamariscifolia (=Cystoseira tamariscifolia)

Moussa

Quezada

Viña

et al. 2020

Chemistry & Biodiversity

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Carpodesmia tamariscifolia is a brown alga rich in (poly)phenols with important cytotoxic and antioxidant effects. However, the relationship between its chemical composition and its effects is unknown. The aim of this study is to identify the potential compounds and mechanisms responsible for its main effects. The alga was extracted consecutively with hexane, dichloromethane and methanol and further fractionated using Sephadex LH‐20 and silica gel columns when appropriate. The fractions were subjected to thin‐layer chromatography and liquid chromatography‐mass spectrometry analysis and evaluated for their total phenolic content (Folin‐Ciocalteu assay), radical scavenging activity (DPPH assay), cytotoxic activity (MTT assay on the SH‐SY5Y cell line), and ability to generate H2O2 (Amplex Red assay). Chromatographic and phenolic analyses of the fractions indicate that abundant redox‐active phenols are present in all the fractions and that a high amount of prenylated hydroquinone derivatives is present in the apolar ones. In the hexane and dichloromethane fractions, the cytotoxic and antioxidant activities are closely related to their phenolic content, whereas in the methanol fractions, the cytotoxicity is negatively related to the phenolic content and the antioxidant activity is positively related to it. In the same tests, hydroquinone behaves as both strong cytotoxic and antioxidant agent. H2O2 assay shows that C. tamariscifolia fractions and hydroquinone can autoxidize and generate H2O2. Our results suggest that redox‐active phenols produce the pharmacological effects described for C. tamariscifolia and that the hydroquinone moiety of prenylated hydroquinone derivatives is responsible for both cytotoxic (through a pro‐oxidant mechanism secondary to its autoxidation) and antioxidant effects of the apolar fractions.

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Cytoprotective effect of seaweeds with high antioxidant activity from the Peniche coast (Portugal)

Cited by 103 publications

References 31 publications

Antioxidant and antimicrobial activities of Padina pavonica and Enteromorpha sp. from the Tunisian Mediterranean coast

Antioxidant and antimicrobial activities of Padina pavonica and Enteromorpha sp. from the Tunisian Mediterranean coast

Effect of tuna skin gelatin-based coating enriched with seaweed extracts on the quality of tuna fillets during storage at 4 °C

Redox‐Active Phenolic Compounds Mediate the Cytotoxic and Antioxidant Effects of Carpodesmia tamariscifolia (=Cystoseira tamariscifolia)

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