Green Extraction Techniques of Bioactive Compounds: A State-of-the-Art Review

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The paper gives a well-structured comparison of various extraction techniques with several examples based on 159 references. In this review, a state-of-the-art review is presented, focused on presenting the greenest and less hazardous extraction processes used on the main biomass sources of a biorefinery – food wastes, microalgae, lignocellulosic biomass. Maceration, and Soxhlet extraction, as conventional methods are compared with microwave-assisted, ultrasound-assisted, supercritical and pressiurized extractions. Among the green solvents ionic liquids and deep eutectic solvests are mentioned in addition to vegetable oils and ethanol, ethyl acetate, ethyl lactate.

Unfortunately, cyclodextrin-assisted extractions are not discussed in this review. Some examples from the Cyclodextrin News blog:

Natural deep eutectic solvents combined with cyclodextrins: A novel strategy for chokeberry anthocyanins extraction

β-Cyclodextrin as a green booster for the extraction of polyphenols from blackthorn fruits

Pomegranate and Onion Aqueous and Cyclodextrin Encapsulated Extracts to Chicks

Stabilization of colorants from onion outer scales waste

Cyclodextrins as high-performance green co-solvents in the aqueous extraction of polyphenols and anthocyanin pigments from solid onion waste

Green Extraction Process for the Recovery of Polyphenolic Phytochemicals from Waste Potato Peels Using Hydroxypropyl β-Cyclodextrin

Cyclodextrin-enhanced extraction of red beet: A strategy for enhancing the extraction efficacy of bioactive compounds and their stability in food

Martins, R.; Barbosa, A.; Advinha, B.; Sales, H.; Pontes, R.; Nunes, J. Green Extraction Techniques of Bioactive Compounds: A State-of-the-Art Review. Processes 2023, 11, 2255.

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