Comparison of Different Extraction Methods for Antioxidant Property of Flavonoids from Pomelo Peel

Ru, Qiao Mei; Cai, Ru; He, Jie

doi:10.4028/www.scientific.net/amr.652-654.443

Cited by 4 publications

(1 citation statement)

References 17 publications

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“…erefore, the results in this study indicated that the extracts from pomelo peels might contain almost antioxidant compounds, resulting in the positive correlation between total flavonoid content and antioxidant activity results. Ru et al [22] also reported that the flavonoid content and antioxidant capacity of the extracts from pomelo peels were significantly different depending on the extraction techniques. In this study, the combined enzyme and ultrasound extraction was shown to be more efficient than single treatment.…”

Section: Antioxidant Capacity Of Extracts From Peels Of Different Pommentioning

confidence: 99%

Chemical Composition and Biological Activities of Extracts from Pomelo Peel By-Products under Enzyme and Ultrasound-Assisted Extractions

Hung

Nhi

Ting

et al. 2020

Journal of Chemistry

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Enzyme-assisted extraction (EAE) and ultrasound-assisted extraction (UAE) were popular methods used to extract bioactive compounds from citrus peels, by-products of fruit processing industry. In this study, the total phenolic content (TPC), total flavonoid content (TFC), naringin and hesperidin contents, and antioxidant and antimicrobial activities of the extracts from pomelo peels using the combined enzyme and ultrasound-assisted extraction (E-UAE) or ultrasound and enzyme-assisted extraction (U-EAE) technique were investigated and compared with those extracted using the EAE and UAE. The optimal EAE conditions were as follows: enzyme concentration of 2%, water-solid ratio of 40 ml/g, incubation temperature of 50°C, and extraction time of 60 min, whereas the optimal UAE conditions were ultrasonic energy of 40 kHz, water-solid ratio of 40 ml/g at room temperature, and extraction time of 60 min. The results indicate that the total phenolics, total flavonoids, naringin, and hesperidin contents of the extracts significantly increased in the following order of the extraction techniques: UAE < EAE < U-EAE < E-UAE (p<0.05). The combined E-UAE technique was the most effective technique for bioactive compound extraction with the highest antioxidant and antimicrobial activities. The results also indicate that chemical composition and antioxidant and antimicrobial activities of the extracts were different depending on the pomelo species.

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Section: Antioxidant Capacity Of Extracts From Peels Of Different Pommentioning

confidence: 99%