Wollinger, Alexander and Perrin, Elodie and Chahboun, Jamal and Jeannot, Valerie and Touraud, Didier and Kunz, Werner (2016) Antioxidant activity of hydro distillation water residues from Rosmarinus officinalis L. leaves determined by DPPH assays. COMPTES RENDUS CHIMIE, 19 (6). pp. 754-765. ISSN 1631-0748, 1878-1543
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Rosemary (Rosmarinus officinalis L) is a perennial herb with an intensive aromatic flavor. Its most important chemical constituents are essential oils (e.g., 1,8-cineole and camphor) and antioxidants (e.g., carnosic acid and rosmarinic acid). The common methods to extract the essential oil of rosemary are steam or hydro distillation. The aim of this work is to investigate the residual antioxidants after hydro distillation, especially rosmarinic acid and carnosic acid. For this purpose, the hydro distillation water residues were analyzed by HPLC-UV. Moreover, the influence of the extraction duration on the concentration of the antioxidants was investigated. Also, the residual amount of these compounds in the leaves was examined. The total antioxidant activity of the extracts and of the pure compounds was determined by DPPH assays. It is shown that after 2.5 h of hydro distillation the amount of rosmarinic acid and the antioxidant activity in the water residue reaches a maximum value. In addition, the yield and the quality of the essential oil were investigated to draw a comparison between steam and hydro distillations of Moroccan rosemary leaves. (C) 2016 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CARNOSIC ACID; BUTYLATED HYDROXYANISOLE; NATURAL ANTIOXIDANTS; PHENOLIC-COMPOUNDS; GREEN EXTRACTION; HIV-1 INTEGRASE; ESSENTIAL OIL; ROSEMARY; HYDRODISTILLATION; CARCINOGENICITY; Antioxidants; Rosemary; Essential oil; Steam distillation; Hydro distillation; DPPH; Antioxidant activity |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry VI - Physical Chemistry (Solution Chemistry) > Prof. Dr. Werner Kunz |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Mar 2019 08:58 |
| Last Modified: | 22 Mar 2019 08:58 |
| URI: | https://pred.uni-regensburg.de/id/eprint/2798 |
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