Application of Microwave Hydrodiffusion and Gravity for Phenolic Compounds Extraction from Fruits

Moraes, Débora P.; Farias, Carla A. A.; Barin, Juliano S.; Ballus, Cristiano Augusto; Barcia, Milene Teixeira

doi:10.1007/s11947-022-02806-3

Cited by 14 publications

(1 citation statement)

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“…It was originally developed to extract essential oils, but it is currently being explored for the extraction of polyphenols from raw plant materials. Due to its eco-friendliness and economic benefits, it has gained considerable attention for use in recovering bioactive molecules from agricultural wastes or by-products for developing innovative products [7,8]. Because of the short length of the procedure and the excellent temperature control, microwave radiation does not cause degradation of the thermolabile compounds [9].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study between Microwave Hydrodiffusion and Gravity (MHG) and Ultrasound-Assisted Extraction (UAE): Chemical and Biological Characterization of Polyphenol-Enriched Extracts from Aglianico Grape Pomace

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Petruzziello

et al. 2023

Foods

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The wine industry produces large amounts of grape pomace (GP), a waste that needs to be disposed of properly. Bioactive compounds with high added value can be recovered from GP as an interesting strategy to reduce the environmental impact. Here, two different technologies were employed to recover polyphenol compounds from GP: microwave hydrodiffusion and gravity (MHG) and ultrasound-assisted extraction (UAE). The further purification of UAE and MHG extracts was carried out through solid-phase extraction (SPE) to obtain three fractions, F1, F2 and F3. ATR-FTIR analysis confirmed the presence of sugar and polysaccharide components in F1, as well as non-anthocyanin and anthocyanin compounds in F2 and F3, respectively. Also, the chemical profile was determined by HPLC-UV-DAD, identifying the presence of catechin in F2, and malvidin-3-O-glucoside chloride and cyanidin chloride derivative as the main anthocyanin compounds in F3. The fractions and their parental extracts were characterized for total phenolic content (TPC) and scavenger activity by in vitro assays. We found that F2-MHG and F3-MHG contained phenol contents 6.5 and 8.5 times higher than those of the parental non-fractionated extracts. Finally, F3-MHG (100 μg/mL, w/v) was shown to reduce the proliferation of HT-29 cells.

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Section: Introductionmentioning

confidence: 99%