检索结果-南通市图书馆

Chemical analysis,antimicrobial and anti-oxidative properties of Daucus gracilis essential oil and its mechanism of action

引用

Asian Pacific Journal of Tropical Biomedicine 2016年第1期6卷 8-15页

作者： Meriem El Kolli Hocine Laouer Hayet El Kolli salah akkal Farida Sahli Laboratory of Natural Biological Resources University of Sétif 1 Laboratory of Multiphase Polymeric Materials University of Sétif 1 VARENBIOMOL: Department of Chemistry University of Constantine 1

Objective:To evaluate the essential oils(EO) composition,antimicrobial and antioxidant power of a local plant,Daucus gracilis(***).Methods:The aerial parts of *** were subjected to hydro distillation by a Clevenger apparatus type to obtain the EO which had been analyzed by gas chromatography and gas chromatography coupled with mass spectrometry,and screened for antimicrobial activity against five bacteria and three fungi by agar diffusion *** mechanism of action of the EO was determined on the susceptible strains by both of time kill assay and lysis *** minimal inhibitory concentrations were determined by agar macrodilution and micro-dilution ***-oxidative properties of the EO were also studied by free diphenyl-2-picrylhydrazyl radical scavenging and reducing power ***:The EO yielded 0.68(v/w).The chemical analysis presented two dominant constituents which were the elemicin(35.3%) and the geranyl acetate(26.8%).*** EO inhibited the growth of Bacillus cereus and Proteus mirabilis significantly with minimal inhibitory concentrations of 17.15 μg/mL by the agar dilution method and57.05 μg/mL and 114.1 μg/mL,respectively by liquid micro-dilution.A remarkable decrease in a survival rate as well as in the absorbance in 260 nm was recorded,which suggested that the cytoplasm membrane was one of the targets of the *** EO showed,also,important anti-oxidative effects with an IC50 of 0.002 mg/mL and a dosedependent reducing ***:*** EO showed potent antimicrobial and anti-oxidative activities and had acted on the cytoplasm *** activities could be exploited in the food industry for food preservation.

关键词： Daucus gracilis Apiaceae Essential oils Antimicrobial activity Macro-dilution Micro-dilution Anti-oxidative activity Reducing power

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Essential oils from Elaeoselinum asclepium: Chemical composition, antimicrobial and antioxidant properties

引用

Asian Pacific Journal of Tropical Biomedicine 2016年第10期6卷 851-857页

作者： Moufida Bouchekrit Hocine Laouer Mohamed Hajji Moncef Nasri Serkos Artin Haroutounian salah akkal Laboratory of Natural Biological Resources Valorization Faculty of Sciences University of Setif Laboratory of Enzyme Engineering and Microbiology National School of Engineers of Sfax Chemistry Laboratory Agricultural University of Athens Valorization of Natural Resources Bioactive Molecules and Biological Analysis Unit Department of Chemistry University of Mentouri Constantine1

Objective: To evaluate the chemical composition of the essential oil isolated from Elaeoselinum asclepium(L.) Bertol.(E. asclepium), and test the efficiency of the essential oil as an antimicrobial and antioxidant ***: Essential oil was obtained from the aerial parts of E. asclepium by hydro distillation and analyzed by gas chromatography and gas chromatography coupled with mass spectrometry. We study for the first time the chemical composition of the essential oil of E. asclepium, followed by the in vitro antimicrobial activities, which were evaluated by agar diffusion method against six Gram-positive bacteria, five Gram-negative bacteria, and two fungi. In addition, The antioxidant activities were also investigated using assays of 1,1-diphenyl-2-picrylhydrazyl radical scavenging activity and ferricreducing ***: The analyzed essential oil of the aerial parts of E. asclepium was rich in apinene(43.9%), other compounds detected in appreciable amounts were sabinene(27.9%) and b-pinene(16.0%). The essential oil yields 1.2%, the IC50 values of essential oil in 1,1-diphenyl-2-picrylhydrazyl assay in the reducing power assay were 48.26 mg/m L and at 1 mg/m L, respectively. The absorbance value of essential oil at 700 nm was0.956. The antimicrobial effect was higher on Candida albicans ATCC 1024 strain with the inhibition zone 14.5 mm than bacteria and ***: The essential oil of E. asclepium has antimicrobial and antioxidant activities. These species may be used as an important source of natural antimicrobial and antioxidant agents.

关键词： Elaeoselinum asclepium Apiaceae Essential oil Antimicrobial activity Antioxidant activity Reducing power

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chemical composition and antibacterial activity of essential oil of Launaea lanifera Pau grown in Algerian arid steppes

引用

Asian Pacific Journal of Tropical Biomedicine 2015年第11期5卷 960-964页

作者： Tarek Benmeddour Hocine Laouer salah akkal Guido Flamini Department of Nature and Life Sciences University of Biskra Laboratory of Natural Biological Resources Valorization Faculty of SciencesUniversity of Setif VARENBIOMOL Department of ChemistryUniversity of Constantine 1 Department of Pharmacy University of Pisa

Objective: To evaluate the essential oil composition and the antibacterial activity of an Algerian endemic plant, Launaea lanifera Pau(L. lanifera), grown in arid steppe ***: L. lanifera essential oil was isolated from aerial parts by steam distillation and its chemical composition was evaluated by gas chromatographyflame ionization detector and gas chromatography with electron impact mass spectrometry. Furthermore, its in vitro antibacterial activity against four bacterial strains was tested following the agar disk diffusion ***: This species had a very low essential oil yield(0.005%). Twenty-four(92.6%)individual components were identified. The main constituents were hexahydrofarnesyl acetone(31.6%),(E)-b-ionone(8.5%),(E)-b-damascenone(7.0%), 2-methyltetradecane(3.8%), n-heptadecane(3.8%), limonene(2.8%) and b-caryophyllene(2.8%). No noteworthy antimicrobial activity was observed on the tested bacteria, neither Gram negative nor Gram ***: This is the first report on the volatile constituents and antibacterial activity of L. lanifera. The studied essential oil does not possess significant activity against the tested microorganisms.

关键词： Launaea lanifera Pau(syn. Launaea acanthoclada Mai

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Composition of the Volatile Components Extracted from the Roots of <i>Scorzonera undulata</i>ssp <i>deliciosa</i>(Guiss) Maire: From Algeria

引用

Green and Sustainable Chemistry 2012年第2期2卷 59-61页

作者： Brahim Harkati salah akkal Marie Genevieve Dijoux Franca Département de Botanique et Pharmacognosie Faculté de Pharmacie—Ecologie Microbienne CESN ISPB Lyon France Laboratoire de Phytochimie et Analyses Physicochimiques et Biologiques Département de Chimie Faculté de Sciences Exactes Université Mentouri Constantine Constantine Algérie

The chemical composition of the volatile components of the dried roots of Scorzonera undulata ssp deliciosa collected from Algeria was determined by GC and GC/MS. The obtained results showed that the extracted oil contained nine fatty acids. The major compounds were hexadecanoic acid (42.2%), n-tetradecanoic acid (16.1%), 9-octadecenoic acid (7.7%) and 9-hexadecenoic acid (4.5%).

关键词： Asteraceae Scorzonera undulata ssp deliciosa Essential Oil Fatty Acids GC-MS

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：