Evaluation In Vitro of Plant Essential Oils as Natural Antioxidants
H. J. Damien Dorman, Stanley G. Deans, R. C. Noble, Peter Surai
Journal of Essential Oil Research
Abstract
ABSTRACT Five essential oils, geranium, monarda, nutmeg, oregano and thyme, were evaluated for their antioxidant properties at final concentrations of 0.75 ppm to 100 ppm. Thiobarbituric acid reactive substances (TBARS) were measured in three avian assay systems based on egg yolk, one-day old chicken livers and muscle from mature chickens. All the oils demonstrated extensive antioxidant capacities. The egg yolk TBARS assay showed monarda, nutmeg and thyme essential oils to be the most effective while the chick liver assay revealed nutmeg oil to be the most active. The chicken muscle assay demonstrated equal activity for the oils of monarda, nutmeg, oregano and thyme. Based on this assay technique, oils demonstrating the most effective antioxidant capacities will be chosen for feeding trials to demonstrate their effectiveness in vivo upon polyunsaturated fatty acid (PUFA) metabolism during vital periods of the lifespan, in particular, the foetal/neonate and aging periods.
Extracted Claims
13 claims extracted from this paper into the knowledge graph
nutmeg essential oil was most active
“The chick liver assay revealed nutmeg oil to be the most active.”
thyme essential oil demonstrated equal activity
“The chicken muscle assay demonstrated equal activity for the oils of monarda, nutmeg, oregano and thyme.”
nutmeg essential oil was most effective
“The egg yolk TBARS assay showed monarda, nutmeg and thyme essential oils to be the most effective”