Vortex-assisted matrix solid-phase dispersion: An eco-friendly alternative for the determination of halogens in edible seaweed

Malinowski, Maiara Helena de Melo; Maciel, Paloma Konzgen; Chaves, Marisa de Jesus Silva; Barbosa, Sergiane Caldas; Prímel, Ednei Gilberto; Duarte, Fábio A.; Soares, Bruno Meira

doi:10.1016/j.talanta.2022.123395

Cited by 5 publications

(1 citation statement)

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“…Therefore, from greenness point of view, the use of MSPD is more environmentally friendly than UAE. This technique was successfully employed for the extraction of carotenoids [ 32 ] and fat-soluble vitamins [ 37 ] from microalgae, as well as in combination with vortex-assisted extraction (VAE) to determine halogens in edible seaweed [ 38 ], but to the best of our knowledge, it has never been applied to extract the bioactive compounds from macroalgae. Thus, both UAE and MSPD procedures were compared in terms of efficiency.…”

Section: Resultsmentioning

confidence: 99%

Bioprospecting of Targeted Phenolic Compounds of Dictyota dichotoma, Gongolaria barbata, Ericaria amentacea, Sargassum hornschuchii and Ellisolandia elongata from the Adriatic Sea Extracted by Two Green Methods

et al. 2023

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The content of bioactive compounds in four brown and one red algae from the Adriatic Sea (Dictyota dichotoma, Gongolaria barbata, Ericaria amentacea, Sargassum hornschuchii and Ellisolandia elongata) is explored. The efficiency of two different extraction methods viz. ultrasound-assisted extraction (UAE) and matrix solid-phase dispersion (MSPD) to obtain the extracts rich in phenolic compounds was compared. The effect of the extraction solvent to modulate the phenolic profile was assessed. In general, the mixture ethanol/water in an isovolumetric proportion showed the best results. The total phenolic content (TPC) and antioxidant activity (AA), as well as the individual polyphenolic profile, were evaluated for five target algae. TPC values ranged between 0.2 mg GAE/g (for E. elongata) and 38 mg GAE/g (for S. hornschuchii). Regarding the quantification of individual polyphenols by liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis, the presence of a high number of hydroxybenzoic acid derivatives (mainly of 3- and 4-hydroxybenzoic acids) in all species was noted. In G. barbata their concentrations reached up to 500 mg/kg. IC50 values (ABTS assay) ranged between 44 mg/L (for S. hornschuchii) and 11,040 mg/L (for E. elongata). This work contributes to the in-depth characterization of these little-explored algae, showing their potential as a natural source of phenolic compounds.

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Section: Resultsmentioning

confidence: 99%