Influence of the Supercritical Fluid Extraction (SFE) on Food Bioactives

Pérez-Vega, S.; Salmerón, Iván; Pérez-Reyes, Ildebrando; Kwofie, Ebenezer Miezah; Ngadi, Michael

doi:10.1007/978-3-030-96885-4_10

Cited by 5 publications

(2 citation statements)

References 51 publications

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“…The disadvantage of lower SFE yields is often countered by the addition of a cosolvent. Ethanol, a safe and green solvent, is usually employed as a cosolvent in typically low concentrations during SFE [54,55]. For this reason, the addition of 10% w/w ethanol was performed during SFE under the optimum extraction conditions found in Section 3.3.2.…”

Section: Effect Of Cosolventmentioning

confidence: 99%

Comparative Study of Conventional, Microwave-Assisted and Supercritical Fluid Extraction of Bioactive Compounds from Microalgae: The Case of Scenedesmus obliquus

2023

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The recovery of bioactive products with green processes is a critical topic for the research and industry fields. In this work, the application of solid–liquid (SLE), microwave-assisted extraction (MAE) with aq. ethanol 90% v/v and supercritical fluid extraction (SFE) with CO2 for the recovery of biocomponents from Scenedesmus obliquus is studied. The effects examined were temperature (30–60 °C), time (6–24 h), and solvent-to-biomass ratio (20–90 mLsolv/gbiom) for SLE, temperature (40–60 °C), time (5–25 min), solvent-to-biomass ratio (20–90 mLsolv/gbiom), and microwave power (300–800 W) for MAE, and temperature (40–60 °C), pressure (110–250 bar), solvent flow rate (20–40 gsolv/min), and cosolvent presence (0, 10% w/w ethanol) for SFE in relation to the extract’s yield, phenolic, chlorophyll, carotenoid content, and antioxidant activity. The optimum extraction conditions determined were 30 °C, 24 h, and 90 mLsolv/gbiom for SLE, 60 °C, 5 min, 90 mLsolv/gbiom, and 300 W for MAE, and 60 °C, 250 bar, and 40 gsolv/min for SFE. Additionally, a kinetic SFE study was conducted and the obtained results were satisfactorily correlated using Sovová’s model. The comparison between the methods proved MAE’s efficiency in all terms compared to SLE. Moreover, SFE was accompanied with the lowest yield and chlorophyll content, yet led to an increased carotenoid content and improved antioxidant activity. Finally, the cosolvent addition significantly improved SFE’s yield and led to the most superior extract.

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Section: Effect Of Cosolventmentioning

confidence: 99%

Comparative Study of Conventional, Microwave-Assisted and Supercritical Fluid Extraction of Bioactive Compounds from Microalgae: The Case of Scenedesmus obliquus

2023

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“…This technique primarily leverages supercritical fluids, most commonly carbon dioxide (CO 2 ), due to its moderate critical temperature and pressure, making it suitable for extracting heat-sensitive biological molecules like proteins without denaturing them (Figure 7). The mechanism begins when CO 2 is pressurised and heated above its critical point, exhibiting unique properties of gases and liquids [72]. At this supercritical state, CO 2 has a gas-like diffusivity and viscosity and a liquid-like density, enabling it to penetrate cellular structures more effectively than either state alone.…”

Section: Supercritical Fluid Extractionmentioning

confidence: 99%

Green Technology for Fungal Protein Extraction—A Review

Ahmed,

Suzauddula,

Akter

et al. 2024

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Fungal proteins are highlighted for their nutritional value and bioactive properties, making them a significant alternative to traditional protein sources. This review evaluates various green extraction technologies, including enzymatic-, ultrasound-, higher-pressure homogenization-, microwave-assisted, pulsed electric fields-, and supercritical fluid-assisted extraction, focusing on their effectiveness in disrupting fungal cell walls and preserving protein integrity. The findings indicate that these technologies could have the potential to improve protein yield and quality, addressing the challenges posed by fungal cell walls’ complex and resilient structure. The review also underscores the bioactivities of fungal proteins, including antifungal, antibacterial, antioxidant, and anticancer properties. The conclusion emphasises the need for further optimisation and scaling of these technologies, as well as exploring a wider range of fungal species to fully understand their potential as sustainable protein sources. Future research directions include refining extraction methods, integrating multiple approaches, and utilising novel green solvents to maximise efficiency and yield.

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