Antioxidant activity of some Morrocan hydrosols

Abstract

Essential oils are used in Cosmetic, Perfumery, Food and Pharmaceutical Industries as flavours and/or medicines. However, part of the essential oil components that remains in the distillation water (hydrosol or distillate water) has been less studied both in chemical and biological terms. This research concerns the antioxidant activity, measured through several methods, of Lavandula officinalis L., Origanum majorana L., Rosmarinus officinalis L., Salvia officinalis L. and Thymus vulgaris L., Cinnamomum verum J. Presl. and Syzygium aromaticum (L.) Merrill and Perry hydrosols. The ability of hydrosols to prevent oxidation was checked by two main methods: prevention of lipid peroxidation through the measurement of malonaldehyde produced after degradation of hydroperoxides; and ability for scavenging free radicals including hydroxyl and superoxide anion radicals. The S. aromaticum and T. vulgaris hydrosols, predominantly constituted by eugenol and carvacrol, respectively, were the most effective as antioxidants, except for scavenging superoxide anion radical. In this case, L. officinalis hydrosol in which linalool prevailed was a stronger antioxidant. The worst hydrosol as antioxidant was that of S. officinalis, independent on the method checked.

The Essential Oil and Hydrolats from Myristica fragrans Seeds with Magnesium Aluminometasilicate as Excipient: Antioxidant, Antibacterial, and Anti-inflammatory Activity

“…For example, Salvia officinalis 0.1 g/mL had about 30% radical scavenging activity. The same concentration of Rosmarinus officinalis hydrolat had about 50% activity [31]. Our hydrolats (0.1 g/mL) had 31.43 ± 1.55% (EO1) and 27.24 ± 1.63% (EO2) antioxidant activity-the same as Salvia officinalis.…”

Chemical Composition and New Biological Activities of Essential Oil and Hydrosol of Hypericum perforatum L. ssp. veronense (Schrank) H. Lindb

“…veronense compared to the essential oil, considering the amount of thymol and carvacrol in these extracts (Table 1). Aazza et al [65] reported a similar antioxidant activity (282.6 µmol/L) for Salvia officinalis hydrosol. Quassinti et al [17] tested the antioxidant activity (DPPH) of essential oil for the species Hypericum hircinum L. subsp.…”

Endemic Veronica saturejoides Vis. ssp. saturejoides–Chemical Composition and Antioxidant Activity of Free Volatile Compounds

“…This is the first report on the antioxidant activity of the free volatiles of Veronica species, so we cannot compare it with other results for Veronica species, but we can compare our results with other relevant EOs and hydrosols commonly used in food preservation, preservation, pharmacy and cosmetics. In comparison with reports on other plants, Aazza et al [39] investigated the ORAC activity of hydrosols of several medicinal plants (Lavandula officinalis, Origanum majorana, Rosmarinus officinalis, Salvia officinalis, Thymus vulgaris, Cinnamomum verum and Syzgium aromaticum). The hydrosol KS tested in our research has higher ORAC activity than Salvia officinalis and similar activity to Rosmarinus officinalis [39].…”

“…In comparison with reports on other plants, Aazza et al [39] investigated the ORAC activity of hydrosols of several medicinal plants (Lavandula officinalis, Origanum majorana, Rosmarinus officinalis, Salvia officinalis, Thymus vulgaris, Cinnamomum verum and Syzgium aromaticum). The hydrosol KS tested in our research has higher ORAC activity than Salvia officinalis and similar activity to Rosmarinus officinalis [39]. Bentayeb et al [40] reported antioxidant activity for 10 EOs of the plants often used as spices.…”