Journal
CENTRAL EUROPEAN JOURNAL OF BIOLOGY
Volume 9, Issue 9, Pages 888-900Publisher
DE GRUYTER POLAND SP ZOO
DOI: 10.2478/s11535-014-0322-1
Keywords
Phenolics; Flavonoids; Phenylpropanoids; Antioxidant activity; Scavenging capacity; Medicinal plants
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Investigations have been made to study the production of phenolic compounds (total phenolics, flavonoids and phenylpropanoids) and total antioxidant capacity in 27 Macedonian traditional medicinal plants to improve its potential as a source of natural antioxidants. Antioxidant potential of plant extracts was analyzed by five different assays: cupric reducing antioxidant capacity (CUPRAC), phosphomolybdenum method (PM), reducing power (RP), 2,2-diphenyl-1-picrylhydrazyl (DPPH center dot) and 2,2'-azinobis(3-ethylbenzothiazoline-6-sulphonic acid (ABTS(center dot+)) radical scavenging activity. Origanum vulgare extract consistently exhibited the highest content of phenolic compounds and the strongest antioxidant capacity based on the tests performed, and can be proposed as a promising source of natural antioxidants. Melissa officinalis and Salvia ringens were also identified as valuable sources of antioxidant compounds. A positive linear correlation between antioxidant activity and total phenolics, flavonoids and phenylpropanoids indicates that these compounds are likely to be the main antioxidants contributing to the observed activities of evaluated plants. These findings suggest that the medicinal plants studied in this paper are good sources of bioactive compounds for the food and pharmaceutical industries. (C) Versita Sp. z o.o.
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