期刊
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
卷 96, 期 8, 页码 2723-2730出版社
WILEY
DOI: 10.1002/jsfa.7391
关键词
Campylobacter jejuni; Thymus vulgaris and Olea europea extracts; waste material; anti-adhesion activity; abiotic/biotic surfaces
资金
- ARRS
BACKGROUND: In order to survive in food-processing environments and cause disease, Campylobacter jejuni requires specific survival mechanisms, such as biofilms, which contribute to its transmission through the food chain to the human host and present a critical form of resistance to a wide variety of antimicrobials. RESULTS: Phytochemical analysis of thyme ethanolic extract (TE), thyme post-hydrodistillation residue (TE-R), and olive leaf extract (OE) using high-performance liquid chromatography with photodiode array indicates that the major compounds in TE and TE-R are flavone glucuronides and rosmarinic acid derivatives, and in OE verbascoside, luteolin 7-O-glucoside and oleuroside. TE and TE-R reduced C. jejuni adhesion to abiotic surfaces by up to 30% at 0.2-12.5 mu g mL(-1), with TE-R showing a greater effect. OE from 3.125 to 200 mu g mL(-1) reduced C. jejuni adhesion to polystyrene by 10-23%. On the other hand, C. jejuni adhesion to PSI cl1 cells was inhibited by almost 30% over a large concentration range of these extracts. CONCLUSION: Our findings suggest that TE, the agro-food waste material TE-R, and the by-product OE represent sources of bioactive phytochemicals that are effective at low concentrations and can be used as therapeutic agents to prevent bacterial adhesion. (c) 2015 Society of Chemical Industry
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