Bioactivity and Compound Identification in Extracts from Three Australian Populations of <i>Portulaca oleracea</i>: Full NMR Structural Characterisation of Oleracein Australis 1.

ABSTRACT: Three Australian populations of Portulaca oleracea-Common Purslane, Omega Gold and Omega Red-were grown under identical conditions, separated into portions-leaf, bud, stem and root-and their extracts tested for total phenolic content (TPC), Trolox equivalent antioxidant capacity (TEAC), ferric-reducing antioxidant potential (FRAP), and for antioxidant activity against hydroperoxides and thiobarbituric acid reactive substances (TBARS) in a linoleic acid emulsion. Highest TPC was found in Omega Gold and Omega Red roots, with 31.1 and 36.5 mg gallic acid equivalents per gram dry weight (mg GAE/g DW), respectively, being ten times higher than for Common Purslane roots (3.1 mg GAE/g DW). Other plant portions were generally higher for Omega Gold and Omega Red, though with much less differ

SUBMITTER: Geier C 

PROVIDER: S-EPMC12566405 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature