Antioxidant activity of ethanolic extracts of propolis by high hydrostatic pressure extraction

Antioxidant activity of ethanolic extracts of propolis by high hydrostatic pressure extraction Summary The in vitro antioxidant activity of the ethanolic extracts of propolis by high hydrostatic pressure extraction (HHPE) was investigated in relationship to its total polyphenol and flavonoid content by β‐carotene bleaching and 1,1‐diphenyl‐2‐picrylhydrazyl free radical scavenging assay systems. The results showed that the antioxidant activity of ethanolic extracts of propolis (EEP) samples gradually increased with increasing concentration of the extracts in the concentration range tested. The EEP by HHPE have the same relatively strong antioxidant activities as that by leaching at room temperature (LRT). LRT usually needs 7 days, while HHPE needs only 1 min. From the viewpoints of extraction time, and strong antioxidant activity of its extracts, HHPE was more effective than the conventional extraction methods studied. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Food Science & Technology Wiley

Antioxidant activity of ethanolic extracts of propolis by high hydrostatic pressure extraction

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Publisher
Wiley
Copyright
Copyright © 2007 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0950-5423
eISSN
1365-2621
DOI
10.1111/j.1365-2621.2006.01339.x
Publisher site
See Article on Publisher Site

Abstract

Summary The in vitro antioxidant activity of the ethanolic extracts of propolis by high hydrostatic pressure extraction (HHPE) was investigated in relationship to its total polyphenol and flavonoid content by β‐carotene bleaching and 1,1‐diphenyl‐2‐picrylhydrazyl free radical scavenging assay systems. The results showed that the antioxidant activity of ethanolic extracts of propolis (EEP) samples gradually increased with increasing concentration of the extracts in the concentration range tested. The EEP by HHPE have the same relatively strong antioxidant activities as that by leaching at room temperature (LRT). LRT usually needs 7 days, while HHPE needs only 1 min. From the viewpoints of extraction time, and strong antioxidant activity of its extracts, HHPE was more effective than the conventional extraction methods studied.

Journal

International Journal of Food Science & TechnologyWiley

Published: Nov 1, 2007

References

  • Hepatoprotective and anti‐ Helicobacter pylori activities of constituents from Brazilian propolis
    Banskota, Banskota; Tezuka, Tezuka; Adnyana, Adnyana
  • Flavonoid content of several vegetables and their antioxidant activity
    Chu, Chu; Chang, Chang; Hsu, Hsu
  • Antioxidant activity of propolis of various geographic origins
    Kumazawa, Kumazawa; Hamasaka, Hamasaka; Nakayama, Nakayama

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