期刊
JOURNAL OF FUNCTIONAL FOODS
卷 10, 期 -, 页码 436-443出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jff.2014.07.003
关键词
Cymbopogon citratus; Lemongrass; Flavonoids; Luteolin; Glycosylation; Anti-inflammatory
资金
- FEDER/COMPETE [FCOMP-01-0124-FEDER-011096]
- Foundation for Science and Technology (FCT) [PTDC/SAU-FCF/105429/2008, PEst-OE/SAU/UI0177/2011, PEst-C/SAU/LA0001/2011]
- [SFRH/BD/46281/2008]
- [SFRH/BD/72918/2010]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/72918/2010, PTDC/SAU-FCF/105429/2008] Funding Source: FCT
Flavonoids from lemongrass - Cymbopogon citratus (DC.) Stapf - leaves infusion, a commonly consumed beverage for the treatment of inflammatory-related conditions, were investigated in this work. Luteolin O-, C- and O,C-glycosides were isolated and identified by nuclear magnetic resonance, being the cassiaoccidentalin B structure fully characterized for the first time in lemongrass. The anti-inflammatory activity of luteolin and its glycosides was evaluated in lipopolysaccharide-stimulated macrophages. Luteolin glycosides demonstrated less cytotoxicity than luteolin itself. Although glycosylation decreases luteolin anti-inflammatory properties, being higher to C-glycosylation, an inhibitory effect on inflammatory mediator production (nitric oxide and IL-1 beta) was verified for the luteolin 7-O-beta-glucopyranoside, without cytotoxic effects. Therefore, luteolin glycosides from lemongrass infusion are evidenced as a less toxic alternative to current anti-inflammatory drugs with promising use in pharmaceutical and food supplement industries. Additionally, this work establishes structure activity relationships, which constitutes valuable information in the design of anti-inflammatory luteolin glycosides devoid of toxicity. (C) 2014 Elsevier Ltd. All rights reserved.
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