Chemical composition and antioxidant, antibacterial and antifungal activities of the essential oils from Bidens pilosa Linn. var. Radiata
Chemical composition and antioxidant, antibacterial and antifungal activities of the essential oils from Bidens pilosa Linn. var. Radiata
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DOI：
10.1016/j.foodcont.2007.04.011
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发表时间：
2008-04-01
期刊：
影响因子：
6
通讯作者：
Tawata, Shinkichi
中科院分区：
文献类型：
--
作者：
Deba, Farah;Xuan, Tran Dang;Tawata, Shinkichi
本文研究了广泛分布于亚热带和热带地区的传统药用植物三叶鬼针草挥发油的化学成分、抗菌和抗真菌活性。从B的新鲜叶和花中提取的精油。结果表明，从毛蕊花中共鉴定出44种化合物，其中β-香芹烯（10.9%）和τ-杜松烯（7.82%）分别为叶和花中的主要成分（5.1%和6.13%）。用DPPH法和β-胡萝卜素漂白法对叶和花的油和水提物进行抗氧化活性筛选。在前一种情况下，从叶和花的精油被认为是上级所有的水提取物测试的IC 50值分别为47.5和49.7 μ g/ml，而所有的提取物和精油似乎抑制氧化的亚油酸在后一种情况下。来自B的油。结果表明，毛蕊花对6种细菌和3种真菌具有显著的抑菌和抗真菌活性。花精油对革兰氏阴性菌的抑制活性显著高于革兰氏阳性菌。我们的研究结果表明，精油和水提取物的B。具有抗氧化和抗微生物活性，可能是用于食品和其他相关工业的天然防腐剂的潜在来源。(c)2007爱思唯尔有限公司保留所有权利。
The present study describes the chemical composition, antibacterial and antifungal activities of essential oils from Bidens pilosa, a traditional medicinal plant widely distributed in the subtropics and tropics. The essential oils from the fresh leaves and flowers of B. pilosa were analyzed by GC-MS. Forty-four components were identified, of which beta-caryophyllene (10.9% and 5.1%) and tau-cadinene (7.82% and 6.13%) were the main compounds in leaves and flowers, respectively. The oils and aqueous extracts of leaves and flowers were subjected to screening for their possible antioxidant activities by using 2,2'-diphenyl-1-picrylhydrazyl (DPPH) and beta-carotene bleaching methods. In the former case, the essential oils from leaves and flowers were found to be superior to all aqueous extracts tested with an IC50 value of 47.5 and 49.7 mu g/ml, respectively, whereas all extracts and essential oils seemed to inhibit the oxidation of linoleic acid in the latter case. The oils from B. pilosa exerted significant antibacterial and antifungal activities against six bacteria and three fungal strains. The inhibitory activity of the flower essential oils in Gram-negative bacteria was significantly higher than in Gram-positive. Our findings demonstrate that the essential oils and aqueous extracts of B. pilosa possess antioxidant and antimicrobial activities that might be a natural potential source of preservative used in food and other allied industries. (c) 2007 Elsevier Ltd. All rights reserved.