Natural Deep Eutectic Solvents as the Main Solvents for the Extraction of Total Polyphenols from Orange Peel

Gómez-Urios, Clara; Viñas-Ospino, Adriana; Penadés-Soler, Anna; López-Malo, Daniel; Frígola, Ana; Esteve, María J.; Blesa, Jesús

doi:10.3390/foods2021-11043

The 2nd International Electronic Conference on Foods - "Future Foods and Food Technologies for a Sustainable World" 2021

DOI: 10.3390/foods2021-11043

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Natural Deep Eutectic Solvents as the Main Solvents for the Extraction of Total Polyphenols from Orange Peel

Clara Gómez-Urios

Adriana Viñas-Ospino

Anna Penadés-Soler

et al.

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2024

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Ultrasonication-Assisted Aqueous Extraction of Waste Orange Peel Polyphenols: Optimization of Process Variables and Effect on Extract Composition

Belsi,

Vogiatzi,

Palaiogiannis

et al. 2024

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The citrus processing industry is responsible for the generation of large volumes of waste side streams, represented principally by fruit peels. These tissues are exceptionally rich in polyphenolic bioactive phytochemicals, and there has been a great industrial interest for their valorization. The examination presented herein targeted at developing a fast and straight-forward aqueous extraction process, based on ultrasonication, for the efficacious recovery of polyphenolic compounds from waste orange peels. After an initial single-factor examination, the response surface optimization showed that a maximum total polyphenol yield of 12.81 mg chlorogenic acid equivalents (GAE) per g−1 dry mass could be achieved by setting sonicator amplitude at 80%, for 15 min, using a duty cycle of 2/2 (2 s on/2 s off). Comparison of this methodology with a stirred-tank extraction demonstrated that the ultrasonication technique was equally effective, requiring ambient temperature and considerably shorter resident time. The combination of both techniques using the ultrasonication process as a pretreatment step did not boost extraction yield, and the extracts produced had similar polyphenolic composition and antioxidant activity. However, a slight enhancement of the recovery of individual constituents was noted. It is proposed that efficient extraction of polyphenolic substances from waste orange peels may be accomplished using the present methodology, which is a low-cost (ambient temperature, short time) and sustainable (water as solvent) process.

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Ultrasonication-Assisted Aqueous Extraction of Waste Orange Peel Polyphenols: Optimization of Process Variables and Effect on Extract Composition

Belsi,

Vogiatzi,

Palaiogiannis

et al. 2024

Compounds

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show abstract

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Natural Deep Eutectic Solvents as the Main Solvents for the Extraction of Total Polyphenols from Orange Peel

Cited by 1 publication

References 11 publications

Ultrasonication-Assisted Aqueous Extraction of Waste Orange Peel Polyphenols: Optimization of Process Variables and Effect on Extract Composition

Ultrasonication-Assisted Aqueous Extraction of Waste Orange Peel Polyphenols: Optimization of Process Variables and Effect on Extract Composition

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