Supercritical CO~ 2 Extraction of Peppermint. Influence of Extraction Conditions on the Antioxidant Activity of the Residues (original) (raw)

2002

Abstract

ABSTRACT The extraction of peppermint with supercritical CO2 at pressures from 9 to 18 MPa, and temperatures of 308 to 323 K have been studied. Recovery conditions were varied from 6 to 8 MPa and the extraction time was varied from 1 to 6 hours. The study of the antioxidant activity of peppermint residual extracts in sunflower oil was performed using a Rancimat method. The best protection factor versus concentration of extract curve was obtained for the extraction condition of 18 MPa, 323 K and 1 hour. The residues of the supercritical carbon dioxide extraction show a high antioxidant activity but it was mainly dependent on the pressure used. It is concluded that the methodology employed was convenient for obtaining extracts with antioxidant activity, having applications in the food and pharmaceutical industries.

Albertina Ribeiro hasn't uploaded this paper.

Let Albertina know you want this paper to be uploaded.

Ask for this paper to be uploaded.