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Advisor(s)
Abstract(s)
Different in vitro assays characterise most of the essential oils and phenolic compounds as antioxidants.
These molecules can be found in a variety of aromatic plants and have been related to their bioactive
properties. For the first time, a comparative study between the antioxidant properties of essential oils and
phenolic extracts from Cistus ladanifer leaves, Citrus latifolia fruit peels, Cupressus lusitanica foliage and
Eucalyptus gunnii leaves was performed. Overall, the antioxidant properties of phenolic extracts (unless
scavenging activity of C. latifolia) were excellent and better than those obtained from the essential oils
extracts, and even for the standards BHA (2-tert-butyl-4-methoxyphenol) and -tocopherol. The better
EC50 values for all the assays (scavenging activity, reducing power and lipid peroxidation inhibition) were
obtained in the E. gunnii phenolic extract (less than 0.1mgmL−1). Among the essential oils extracts, the
best contribution was given by C. ladanifer.
Description
Keywords
Aromatic plants Essential oils Phenolics Antioxidant activity
Pedagogical Context
Citation
Guimarães, Rafaela; Sousa, Maria João; Ferreira, Isabel CFR (2010). Contribution of essential oils and phenolics to the antioxidant properties of aromatic plants. Industrial Crops and Products. ISSN 0926-6690. 32:2. p. 152-156
Publisher
Elsevier