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Antibacterial and molluscicidal activities of the essential oil of Chrysanthemum viscidehirtum. 总被引:3,自引:0,他引:3
F Khallouki M Hmamouchi C Younos R Soulimani J M Bessiere E M Essassi 《Fitoterapia》2000,71(5):544-546
The volatile fraction of Chrysanthemum viscidehirtum aerial parts, consisting mainly of limonene, beta-farnesene and many oxygenated sesquiterpenes, was screened for activity against 21 microbial strains. This essential oil exhibited activity against all germs tested, in particular Salmonella typhi and Proteus mirabilis. It also showed molluscicidal activity against Bulinus truncatus. 相似文献
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Artemisia douglasiana leaf has been shown to be efficacious complementary herbal treatment for chronic bladder infection in a paraplegic youth. The leaf oil has been analyzed by GC-MS and the major components found to be camphor (29%), artemisia ketone (26%), artemisia alcohol (13%), alpha-thujone (10%), 1,8-cineole (8%), and hexanal (5%). The leaf oil and the major components have been tested for antimicrobial activity against Bacillus cereus, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Candida albicans, and Aspergillus niger. The essential oil shows limited antimicrobial activity in vitro, so it is unclear if the oil exerts a direct antimicrobial effect in vivo, or plays some role in stimulation of host defenses. 相似文献
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The essential oil of Rosa damascena petals was evaluated for its antibacterial effects against three strains of Xanthomonas axonopodis spp. vesicatoria. The essential oil may be a potential control agent in the management of the disease caused by X.a. vesicatoria in tomato and pepper plants. 相似文献
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Antibacterial activity of Salvia tomentosa essential oil. 总被引:2,自引:0,他引:2
The essential oil of Salvia tomentosa aerial parts, consisting of 1,8-cineol (17%), beta-caryophyllene (11%), cyclofenchene (10%) and delta-cadinene (6%), was screened for its antimicrobial activity. The essential oil remarkably inhibited the growth of tested Gram-positive and Gram-negative bacteria except for Pseudomonas aeruginosa. 相似文献
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The essential oil of Aristolochia indica, containing beta-caryophyllene and alpha-humulene as major constituents, was found to show a moderate antibacterial activity. 相似文献
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The essential oil of Cymbopogon densiflorus showed a wide spectrum of activity against Gram-positive and Gram-negative bacteria. 相似文献
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Antibacterial activity of essential oil of dried inflorescence of Cymbopogon nervatus was investigated. The essential oil remarkably inhibited the growth of tested bacteria except for Salmonella typhi. The maximum activity was against Shigella dysenteriae and Klebsiella pneumoniae. 相似文献
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Antibacterial activity of Ferula gummosa essential oil was studied against bacterial laboratory ATCC standards using the disk diffusion method. The results showed activity against Gram(+) bacteria and Escherichia coli. Little antibacterial activity was found against Pseudomonas aeruginosa. 相似文献
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The essential oil of Achillea clavennae was investigated for its antibacterial activity against some respiratory tract pathogens. Maximum activity was observed against Klebsiella pneumoniae and penicillin-susceptible and penicillin-resistant Streptococcus pneumoniae. The oil also exhibited strong activity against Gram (-) Haemophilus influenzae and Pseudomonas aeruginosa. Gram (+) Streptococcus pyogenes was the most resistant to the oil. 相似文献
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Pessoa OD de Carvalho CB Silvestre JO Lima MC Neto RM Matos FJ Lemos TL 《Fitoterapia》2005,76(7-8):712-714
The essential oil of fresh leaves of Lippia aff. gracillis was analyzed by GC/MS and evaluated for its antibacterial effects. The results showed a moderate antibacterial activity and confirm the traditional uses of L. aff. gracillis. 相似文献
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WANG Wei ZHANG Xue-ke WU Nan FU Yu-jie ZU Yuan-gang 《林业研究》2006,17(4):332-334
Introduction Artemisia species, widespread throughout the world, are important medicinal plants, which are receiving phytochemical attention due to the biological and chemical diversities (Tan et al. 1998). Artemisias (Compositae) are one of the most popu… 相似文献
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Chi-Jung Chen Yen-Hsueh Tseng Fang-Hua Chu Tin-Ya Wen Wei-Wen Cheng Yu-Ting Chen Nai-Wen Tsao Sheng-Yang Wang 《Journal of Wood Science》2012,58(6):538-543
Litsea cubeba (Lauraceae) is woody plant endemic to Taiwan that is traditionally used as a spice. In the current study, several behavioral analyses were performed to evaluate the neuropharmacological activity of the essential fruit oil of L. cubeba in ICR mice. Oral administration of 100, 300 and 500?mg/kg of L. cubeba fruit oil significantly prolonged pentobarbitone-induced mouse sleeping time by 20.0, 110.8, and 159.6?%, respectively. In addition, after administration of L. cubeba oil, mice significantly increased the time spent in the open arms and number of entries into the open arms of an elevated plus maze compared to saline-treated mice suggesting that L. cubeba oil has anxiolytic activity. A tail-flick test conducted after treatment of mice with 500?mg/kg L. cubeba fruit oil also suggested that this oil has potent analgetic activity. According to GC/MS analyses, the essential fruit oil of L. cubeba oil consists of 23 compounds. The main components are geranial (37.16?%), neral (28.29?%), and d-limonene (22.90?%). We conclude that L. cubeba oil has a potent effect on the central nervous system of mice. 相似文献
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研究衍生化条件对HPLC-UV法测定黄花蒿青蒿素含量的影响.建立了黄花蒿青蒿素的柱前衍生HPLC-UV测定方法:即青蒿素标准品溶液(或黄花蒿提取浸膏)以体积分数为95%乙醇补充(溶解)至15.0 mL,再加入质量分数为O.2%的NaOH 8.0 mL,45℃水浴30 min后冷却至室温,加入0.08 mol/L的HAc 10 mL摇匀.以95%乙醇定容至50 mL容量瓶中;HPLC分离,260 nm紫外检测.所得方法检测线性范围为0~200mg/L,相对标准偏差(RSD)值为1.40%,平均回收率(n=5)为100.1%.用该方法测定了黑龙江引种的黄花蒿提取物样品,稳定性RSD值为4.35%,重现性RSD值为4.96%.证明该方法简单、稳定、重现性好. 相似文献
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Antimicrobial and cytotoxic activities of the fruit essential oil of Xylopia aethiopica from Nigeria
The fruits essential oil of Xylopia aethiopica showed activity against four microorganisms and cytotoxicity to carcinoma cells (Hep-2 cell line) at 5 mg/ml concentration. 相似文献
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为给鸭儿芹的综合利用提供科学依据,以鸭儿芹茎、叶为原料,采用水蒸气蒸馏法提取鸭儿芹精油,利用气相色谱-质谱联用技术(GC-MS)对鸭儿芹精油成分进行了分析,利用DPPH、ABTS自由基清除能力试验与FRAP试验及打孔法抑菌试验对其精油的抗氧化抗菌活性进行了分析。结果表明:(1)精油成分方面,从鸭儿芹精油中共分离出32个峰,占总离子峰的93.75%,共鉴定出30种化合物,其主要成分分别为α-芹子烯(42.01%)、β-芹子烯(19.86%)、(Z)-β-金合欢烯(12.76%)、镰叶芹醇(4.16%)、α-没药醇(3.93%)等;(2)抗氧化能力方面,当鸭儿芹精油浓度由19μg/m L上升到38μg/m L时,DPPH反应液中Trolox的当量由0.003μmol上升到0.007μmol,ABTS反应液中Trolox的当量由0.069μmol上升到0.074μmol,FRAP反应液中Trolox的当量由0.225μmol上升到0.280μmol,当精油浓度在一定范围内,其DPPH清除能力、ABTS自由基清除能力及铁离子还原抗氧化能力与其浓度间均呈量效关系,且均呈正相关效应,表明鸭儿芹精油具有良好的抗氧化能力;(3)抗菌活性方面,当鸭儿芹精油浓度为1 280 mg/m L时,金黄色葡萄球菌的抑菌圈直径可达7.05 mm,表现出一定的抑菌活性,且其对金黄色葡萄球菌的抑菌效果显著优于其对大肠杆菌的抑菌效果。 相似文献
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引种的不同种源黄花蒿青蒿素含量的研究 总被引:3,自引:0,他引:3
采用恒温振荡浸提法和柱前衍生紫外检测高效液相色谱法,测定黑龙江省引种的黄花蒿青蒿素含量.结果表明:2007年引自酉阳的黄花蒿(YY-2)含青蒿素质量分数最高为0.668 %,药用部分生物量最大的为YY-3(4 014.6±420.0)kg/hm2,其主要因素受遗传背景的影响.引种的黄花蒿青蒿素含量虽然下降,但能够达到药用收购标准且生物量很大.引种的黄花蒿具有很强的适应性,可利用黑龙江省生产力差的闲置、废弃土地推广,即可获得可观的经济效益,又避免与传统农作物争地. 相似文献