Journal
PROCESSES
Volume 10, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/pr10081657
Keywords
cv. Ferrovia; DoE; energy saving; green solvent; organic raw material; UAL
Categories
Funding
- Apulian Region
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This study optimized the ultrasound-assisted extraction of polyphenols from sweet cherry pulp and identified the best extraction conditions. The findings provide a basis for the extraction and application of polyphenols in biological research and the food industry.
This work focused on the optimization of the ultrasound (US) extraction of polyphenols from sweet cherry pulp by monitoring cyanidin-30-rutinoside, quercetin-3O-rutinoside, and trans-3-O-coumaroylquinic acid, representing the main anthocyanin, flavonol, and hydroxycinnamate, respectively, identified in the extracts through chromatographic analyses (HPLC-DAD), as output variables. The optimization was performed following a two-level central composite design and the influence of the selected independent variables (i.e., extraction time and solid to solvent ratio) was checked through the response surface methodology. The maximum recovery of the phenolic compounds was obtained at 3 min and 0.25 g/mL in water/ethanol (1:1, v/v) at a set temperature (25 degrees C), sonication power (100 W), and sonication frequency (37 kHz). Subsequent validation experiments proved the effectiveness and reliability of the gathered mathematical models in defining the best ultrasound-assisted extraction conditions.
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