期刊
FOOD CHEMISTRY
卷 161, 期 -, 页码 79-86出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2014.03.126
关键词
Asteraceae; UPLC-MS/MS; Antimicrobial; Minimum inhibitory concentration antioxidant; Phenolics
资金
- Irish Phytochemical and Food Network (IPFN)
- Teagasc Walsh Fellowship scheme
Antimicrobial properties of ethanol and water extracts from eight Asteraceae species were investigated against three Gram positive (Staphylococcus aureus, MRSA and Bacillus cereus) and two Gram negative (Escherichia coli and Salmonella typhimurium) bacterial strains. Ethanol extracts from Centaurea scabiosa, Arctium minus, Taraxacum officinale, Centaurea nigra and Cirsium palustre demonstrated antimicrobial activity against strains of S. aureus, MRSA and B. cereus (MIC = 187.5-365 mu g/ml). Ethanol extracts also had higher antioxidant activities and phenolic content demonstrating a link between these compounds and the bioactivity of these extracts. Further investigation into the phenolic content of ethanol extracts using UPLC-MS/MS lead to the identification and quantification of numerous phenolic compounds in all species including; 18 from Cirsium arvense, 16 from Cirsium vulgare, 19 from C palustre, 15 from C nigra, 17 from C scabiosa, 14 from Sonchus asper, 17 from A. minus and 11 from T. officinale. (C) 2014 Elsevier Ltd. All rights reserved.
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