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10-3390-molecules27072268 |
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|a 14203049 (ISSN)
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|a Optimizing Procedures of Ultrasound-Assisted Extraction of Waste Orange Peels by Response Surface Methodology
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|b MDPI
|c 2022
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|z View Fulltext in Publisher
|u https://doi.org/10.3390/molecules27072268
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|a The simultaneous effects of three continuous factors: solvent concentration (50–100%), treated times (25–85 min), treated temperatures (25–55◦C), and two categorical factors: type of solvents (methanol or ethanol) and ultrasonic frequency (28 kHz or 40 kHz) on ultrasonic-assisted extraction yield from waste orange peels were evaluated and optimized by response surface method-ology. Fourier Transform Infrared (FTIR) spectroscopy with a wavelength of 500 cm−1 to 4000 cm−1 was employed to rapidly identify the orange extracts. The significant polynomial regression models on crude extraction, sediments after evaporation, and precipitation yield were established (p < 0.05). Results revealed that solvent concentration affected crude extraction and precipitation yield linearly (p < 0.01). The optimal and practical ultrasound-assisted extraction conditions for increasing the precipitation yield were using 61.42% methanol with 85 min at 55◦C under 40 kHz ultrasonic frequency. The spectra of extracts showed a similar fingerprint of hesperidin. © 2022 by the author. Licensee MDPI, Basel, Switzerland.
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|a antioxidant
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|a Antioxidants
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|a chemistry
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|a Citrus sinensis
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|a hesperidin
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|a methanol
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|a Methanol
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|a plant extract
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|a Plant Extracts
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|a response surface methodology
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|a solvent
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|a Solvents
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|a sweet orange
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|a ultrasound-assisted extraction
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|a waste orange peels
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|a Feng, C.-H.
|e author
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|t Molecules
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