Comparison of extraction methods for selected carotenoids from macroalgae and the assessment of their seasonal/spatial variation

Heffernan, Natalie; Smyth, Thomas J.; Fitzgerald, Richard J.; Vila-Soler, Anna; Mendiola, J. A.; Ibáñez, Elena; Brunton, Nigel P.

doi:10.1016/j.ifset.2016.06.004

Cited by 58 publications

(34 citation statements)

References 39 publications

(31 reference statements)

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“…Supercritical CO 2 (SC-CO 2 ) can extract only nonpolar or compounds of low polarity since it is nonpolar solvent but the extraction of polar compounds can be enhanced by adding small amounts of polar co-solvents such as ethanol or methanol [ 27 ]. Conditions during the extraction, especially pressure and temperature, are responsible for selectivity and solubility of the various compounds in the supercritical fluid [ 20 ]. CO 2 has low critical temperature and pressure, which means that bioactive compounds stay preserved and no degradative changes can occur [ 35 ].…”

Section: Novel Extraction Techniques Of Bioactive Compounds From Mmentioning

confidence: 99%

“…Carotenoids are natural antioxidants and they are applied in different food products [ 18 ]. The most abundant carotenoid of marine macroalgae is fucoxanthin ( Figure 4 ) and it possess antiproliferative activity [ 19 , 20 ]. Except for antiproliferative properties, carotenoids also possess antioxidant [ 21 ], antimicrobial, and antihypertensive activity [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

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Overview on the Application of Modern Methods for the Extraction of Bioactive Compounds from Marine Macroalgae

et al. 2018

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Marine macroalgae represent a rich source of bioactive compounds that can be implemented in various food, cosmetic, and pharmaceutical products for health improvement. It has been proven that these bioactive compounds, such as polyphenols, polysaccharides, carotenoids, and ω-3 fatty acids possess bioactivity. For the extraction of these compounds, modern methods (Supercritical Fluid Extraction (SFE), Subcritical Water Extraction (SWE), Ultrasound-Assisted Extraction (UAE), and Microwave-Assisted Extraction (MAE)) have been used due to their advantages over the conventional methods. The process parameters of each method must be optimized for obtaining the extracts with the targeted bioactive compounds. In distinction from the existing reviews, the present review provides novelty with respect to: (a) presenting systematically the selected process parameters of SFE (temperature, time, pressure, use of co-solvents), SWE (temperature, time, pressure, solid-solvent ratio), UAE (temperature, time, frequency, power, solid-solvent ratio), and MAE (temperature, time, frequency, power, solvent type) applied for the extractions of marine macroalgae; (b) reporting the major groups or individual compounds extracted with their biological activities (if determined); and, (c) updating available references.

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Section: Novel Extraction Techniques Of Bioactive Compounds From Mmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Overview on the Application of Modern Methods for the Extraction of Bioactive Compounds from Marine Macroalgae

et al. 2018

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“…Extractions were performed in triplicate using a laboratory-scale supercritical fluid extractor (Speed SFE-2, Applied Separation, Allentown, USA) and were conducted using the optimal extraction conditions described by Heffernan et al [21] for brown macroalgae. Nevertheless, in order to optimize the extraction time, an overall extraction curve (OEC; extract yield versus time) was performed at 50°C, 300 bar with carbon dioxide flow of 2 L min -1 (4.5 purity degree; Sapio, Monza; Italy) and 10% of ethanol (v/v).…”

Section: Supercritical Fluid Extraction (Sfe)mentioning

confidence: 99%

Study of the Efficacy of Two Extraction Techniques from <i>Crithmum maritimum</i> and<i> Salicornia europaea</i>

Costa¹,

Padalino²,

Spinelli³

et al. 2018

JFNR

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The aim of this work was to study the characteristics of the extracts from two halophytes, sea fennel (Crithmum maritimum L.) and marsh samphire (Salicornia europaea L.) that naturally grow on the Mediterranean coast, by using ultrasound-assisted extraction (UAE) and supercritical fluid extraction (SFE). Best conditions for UAE were found at temperature 50°C, 20 min extraction time, 1:30 ratio solid:solvent and 40% (v/v) ethanol concentration. For SFE best conditions were at 50°C and 300 bar pressures with 40% (v/v) ethanol concentration. Total extract yield, total phenolic content, total flavonoid content and antioxidant capacity of the extracts were measured. For both species the best results were obtained with UAE technique. Between the two halophytes, the C. maritimum extract was the richest one in antioxidant compounds (total phenol = 23.44 mg GAE s g dw -1); under the best conditions the S. europea extract allowed recording only 9.31 mg GAE s g dw -1 of total phenol.

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“…Fucoxanthin, astaxanthin, lutein, and β-carotene [87] Fucus serratus and Laminaria digitata Xanthophyll and fucoxanthin [88] Table 7. Published studies about carotenoid extraction using CO 2…”

Section: Raw Materials Carotenoid Referencesmentioning

confidence: 99%

Carbon Dioxide Use in High-Pressure Extraction Processes

Cunha¹,

Silva²,

Costa³

et al. 2018

Carbon Dioxide Chemistry, Capture and Oil Recovery

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This chapter describes the use of carbon dioxide at high pressures as an alternative for the extraction of bioactive compounds in a more sustainable way, addressing some of its physicochemical properties, such as pressure, temperature, density, solvation, selectivity, and its interaction with the solute when modified by other solvents such as ethanol and water. This extraction process is considered chemically "green," when compared to conventional extraction processes using toxic organic solvents.

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Comparison of extraction methods for selected carotenoids from macroalgae and the assessment of their seasonal/spatial variation

Cited by 58 publications

References 39 publications

Overview on the Application of Modern Methods for the Extraction of Bioactive Compounds from Marine Macroalgae

Overview on the Application of Modern Methods for the Extraction of Bioactive Compounds from Marine Macroalgae

Study of the Efficacy of Two Extraction Techniques from <i>Crithmum maritimum</i> and<i> Salicornia europaea</i>

Carbon Dioxide Use in High-Pressure Extraction Processes

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