Purple corn (Zea mays L.) pericarp hydroalcoholic extracts obtained by conventional processes at atmospheric pressure and by processes at high pressure
Extracts of Peruvian purple corn pericarp ( Zea mays L.) were obtained: (1) via supercritical fluid extraction with CO 2 as solvent and EtOH-H2O (70:30, v/v) as co-solvent, (2) via pressurized liquid extraction (PLE) with EtOH-H 2 O (70:30, v/v) and, (3) via two conventional extraction processes, st...
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Published in | Brazilian journal of chemical engineering Vol. 37; no. 1; pp. 237 - 248 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Cham
Springer International Publishing
01.03.2020
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Subjects | |
Online Access | Get full text |
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Summary: | Extracts of Peruvian purple corn pericarp (
Zea mays
L.) were obtained: (1) via supercritical fluid extraction with CO
2
as solvent and EtOH-H2O (70:30, v/v) as co-solvent, (2) via pressurized liquid extraction (PLE) with EtOH-H
2
O (70:30, v/v) and, (3) via two conventional extraction processes, stirred vessel and Soxhlet. The extraction yields and extract compositions were compared to each other. The parameters measured were the point-to-point extraction yield, the global extraction yield and composition of extracts regarding contents of total phenolics, total flavonoids, total anthocyanins and specific anthocyanins such as cyanidin-3-glucoside, peonidin-3-glucoside and pelargonidin-3-glucoside. Antioxidant activity by DPPH and in vitro antiproliferative activity were also evaluated considering seven cancer cell lines. High yields and higher contents of phenolic compounds, accompanied by a high antioxidant activity at 50 °C, were obtained for supercritical extraction at 60 °C. Antioxidant activity showed good correlation with the content of phenolic compounds, but there was no antiproliferative activity. |
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ISSN: | 0104-6632 1678-4383 |
DOI: | 10.1007/s43153-020-00009-x |