检索结果-南通市图书馆

Antibacterial activity of Lawsonia inermis Linn(Henna) against Pseudomonas aeruginosa

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Biomedicine 2011年第3期1卷 173-176页

作者： Habbal O Hasson SS El-Hag AH Al-Mahrooqi Z Al-Hashmi N Al-Bimani Z MS Al-Balushi Al-Jabri AA Department of Human & Clinical Anatomy College of Medicine and Health Sciences.Sultan Qaboos University Division of Immunology Department of Microbiology and ImmunologyCollege of Medicine and Health Sciences.Sultan Qaboos University Division of Microbiology Department of Microbiology and ImmunologyCollege of Medicine and Health SciencesSultan Qaboos University

Objective:To investigate the antibacterial activity of henna(Lawsonia inermis Linn) obtained from different regions of Oman against a wide array of ***:fresh henna samples were obtained from different regions of Oman as leaves and seeds,100 g fresh and dry leaves and SO g of fresh and dry seeds were separately soaked in 500 mL of ethanol for three days,respectively,with frequent *** mixture was filtered,and the crude extract was *** crude extract was then heated,at 48 ℃ in a water bath to evaporate its liquid *** dry crude henna extract was then tested for its antibacterial activity using well-diffusion antibiotic susceptibility *** extracts were investigated for their antibacterial activity at different concentrations against a wide array of different micro-organisms including a laboratory standard bacterial strain of Pseudomonas aeruginosa(NCTC 10662)(A aeruginosa) and eleven fresh clinical isolates of *** obtained from patients attending the Sultan Qaboos University Hospital(SQUH).2-Hydroxy-p-Nathoqinone-Tech(2-HPNT, MW=174.16,C_(10)H_40_3) was included as control(at 50%concentration) along with the henna samples ***:Henna samples demonstrated antibacterial activity against all isolates but the highest susceptibility was against *** with henna samples obtained from Al-sharqyia ***:Omani henna from Al-sharqyia region demonstrates high in vitro anti-P. aeruginosa activity compared with many henna samples from different regions of Oman.

关键词： Pseudomonas aeruginosa Lawsonia inermis Linn Henna Antibacterial activity Oman Antibiotic susceptibility Micro-organism Bacterial strain Clinical isolate Crude extract

Antibacterial activity of sequentially extracted organic solvent extracts of fruits,flowers and leaves of Lawsonia inermis *** Jaffna

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Biomedicine 2012年第10期2卷 798-802页

作者： E Christy Jeyaseelan S Jenothiny MK Pathmanathan JP Jeyadevan Department of Botany Faculty of ScienceUniversity of Jaffna Department of Chemistry Faculty of ScienceUniversity of Jaffna

Objective:To reveal the antibacterial activity of sequentially extracted different cold organic solvent extracts of fruits,flowers and leaves of Lawsonia inermis(L against)some pathogenic ***:Powders of fruits,flowers and leaves of L inermis were continuously extracted with dichloromethane(DCM),ethyl acetate and ethanol at ambient *** dried extracts were prepared into different concentrations and tested for antibacterial activity by agar well diffusion method,and also the extracts were tested to detennine the available ***:Except DCM extract of flower all other test extracts revealed inhibitory effect on all tested bacteria and their inhibitory effect differed significantly(Pinermis are potentially better source of antibacterial agents compared to leaf extracts of respective solvents.

关键词： Lawsonia inermis Antibacterial activity Sequential extraction Well diffusion method

Production and characterization of chitinase from Vibriospecies, a head waste of shrimp Metapenaeus dobsonii(Miers, 1878) and chitin of Sepiella inermisOrbigny, 1848

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Bioscience and Biotechnology 2012年第4期3卷 392-397页

作者： Masilamani Revathi Ramachandran Saravanan Annaian Shanmugam Dept. of Pharmacology Chettinad UniversityKelambakkam Kanchipuram. Tamil Nadu India Division Centre of Advanced Study in Marine Biology Faculty of Marine Sciences Annamalai University Parangipettai Tamil Nadu India

The chitin is extracted from the cuttlebone of S. inermis and the mineral contents are predictable. The structure and degree of deacetylation of extracted cuttlebone chitin is dogged through Fourier Transform Infrared (FT-IR) spectroscopy. The extracted cuttlebone chitin is used as the substrate for the production of chitinase from Vibrio sp. The extra cellular proteins are concentrated by ammonium sulphate precipitation, dialysed and then purified by using gel (sephadex G-100) chromatography. Among the 40 fractions, only two fractions (active fractions) showed maximum absorbance at 280 nm, which are pooled, dialysed and free-dried. The enzyme activity (0.104 μmoles/ml) and molecular weight (50 - 60 kDa) of purified chitinase is also determined through SDS- PAGE. The optimal condition for chitinase activity is pH between 6.0 - 6.5 and 45℃.

关键词： Chitin S. inermis Chitnase M. dobsonii Vibrio sp.

Larvicidal Properties of Botanical Extracts of Lawsonia inermisagainst Anopheles stephensi

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Infectious Diseases 2014年第4期4卷 178-185页

作者： Hasan Bakhshi Mohammad Reza Abai Gholamreza Amin Rasoul Zolfi Masoumeh Pirmohammadi Azam Bakhshi Fakhredin Taghinezhad Seyed Hasan Moosa-Kazemi Department of Medical Entomology & Vector Control School of Public Health Tehran University of Medical Sciences Tehran Iran Department of Pharmacognosy Faculty of Pharmacy Tehran University of Medical Sciences Tehran Iran Department of Nursing School of Nursing and Midwifery Qom University of Medical Sciences Qom Iran School of Nursing and Midwifery Islamic Azad University Medical Sciences Branch Tehran Iran

The aim of this study was to determine the larvicidal activity of Lawsonia inermis against Anopheles stephensi as the main malaria vector in Iran. This study was carried out from February to July 2011. Larvicidal activity of >L. inermis was studied in the range of 4 - 4000 PPM in the laboratory against early and late stages of larvae of An. stephensi. The larvae were reared in the?insectarium. The LC50 and LC90 values of the larval stages of An. stephensi were calculated by probit analysis and regression line draw using Microsoft office excel 2003 software. The highest toxic effect of L. inermis was found at 4000 PPM and the lowest at 4 PPM against larval stages I and II. The same result was found against larval stages III and IV. The LC50 and LC90 was found as 413.8 and 3366.3 respectively against larval stages I and II while against late stages found as 696.9 and 3927.7 respectively. This study suggests that L. inermis extract can be used as an alternative larvicidal compound during the IPM programs for the An. stephensi control. It is recommended to investigate the competency of other similar plants to malaria control.

关键词： Anopheles stephensi Lawsonia inermis Larvicidal Properties

Forage Production and Selection for Vigor in Meadow and Hybrid Bromegrass in the Northern Great Plains

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

American Journal of Plant Sciences 2020年第1期11卷 91-110页

作者： R. Martine Similien Arvid Boe Bruce Coulman Plant Sciences Department South Dakota State University Brookings SD USA Plant Science Department University of Saskatchewan Saskatoon Canada

Meadow bromegrass (Bromus riparius Rehmann) is an important forage crop in Canada and the Intermountain West, but it has not been extensively evaluated in the northern Great Plains (NGP). Our objectives were to 1) evaluate meadow, smooth, and hybrid bromegrasses for forage production under intensive management in eastern South Dakota, and 2) evaluate the effect of selection for vigor in multiple environments on forage production of meadow bromegrass. Thirteen populations (7 meadow bromegrass, 5 hybrid bromegrass, and 1 smooth bromegrass) were evaluated for 4 yrs (2005-2007, 2009) at Brookings, SD. Biomass at anthesis was greater for smooth (6.75 Mg ha-1) than for meadow or hybrid brome (5.4 Mg ha-1) in 2005, but production at anthesis during 2006 and 2007 was similar for meadow and smooth bromegrass. Regrowth harvested during July and October 2005 and November 2006 was greater for meadow than smooth or hybrid bromegrass. Forage production at anthesis in 2009, after rest (i.e., no cutting) and fertilization in 2008, was 4.2 Mg ha-1 for meadow bromegrass compared with 3.3 Mg ha-1 and 2.6 Mg ha-1 for hybrid and smooth bromegrass, respectively. Smooth and hybrid bromegrasses had more leaves·tiller-1 than meadow bromegrass. After 6 yrs, meadow bromegrass had higher tiller density and greater potential for tolerating multiple harvests during a growing season than did smooth or hybrid bromegrass. Selection for vigor in multiple environments in North America resulted in experimental populations of meadow bromegrass with superior forage yield compared with ‘Fleet’ on marginal crop land in the northern Great Plains.

关键词： Bromus riparius Smooth Bromegrass Bromus inermis Morphology Phytomer Biomass Partitioning Leaf Ratio Tiller Density Marginal Cropland

Green Synthesis, Characterization and Antibacterial Activity of ZnO Nanoparticles

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

American Journal of Plant Sciences 2018年第6期9卷 1279-1291页

作者： Hrishikesh Upadhyaya Soumitra Shome Rajdeep Sarma Sujit Tewari Mrinal Kanti Bhattacharya Sanjib Kumar Panda Department of Botany Cotton University Panbazar Guwahati Assam India Department of Botany and Biotechnology Karimganj College Karimganj Assam India Department of Physics Karimganj College Karimganj Assam India Department of Life Science and Bioinformatics Assam University Silchar Assam India

In the present study, mehendi extract (Lawsonia inermis) was used for phytosynthesis of ZnO nanoparticles using 0.1 M Zn(NO3)2 as precursor under alkaline condition using NaOH with vigorous stirring for 2 h. ZnO NPs obtained were characterized by UV-Vis spectroscopy, XRD, SEM and TEM that showed change in shape and size. Hexagonal particles were formed due to plant extract relative to the rod shaped particles in absence of plant extract. Further the antibacterial property of ZnO NP synthesized by green method was more effective than those synthesized in absence of plant extract. The antibacterial activity study of both the synthesized ZnO nanoparticles reveals that the nanoparticles synthesized using mehendi extract are more effective than the particle synthesized without mehendi extract. Thus, the use of leaf extract as capping agent would improve the antibacterial property of ZnO nanoparticle. However, bacteriocidal effect of these nanoparticles varies with respect to the organism tested.

关键词： Antibacterial Activity Green Synthesis ZnO Nanoparticles Lawsonia inermis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

几种禾本科牧草有丝分裂各阶段频率分布

中国草地学报 1989年第2期26卷 17-21页

作者：孙振雷董玲凤内蒙古哲里木畜牧学院

研究了披碱草、老芒麦、无芒雀麦、冰草、黑麦草的有丝分裂各阶段频率分布。结果表明,无论在何种条件下,间期都出现最高频率,前期次之,中、后、末期又次之。供试材料之间无显著差异。温度效应农现为:25°C下前、中、后、末期出现高峰,... 详细信息

研究了披碱草、老芒麦、无芒雀麦、冰草、黑麦草的有丝分裂各阶段频率分布。结果表明,无论在何种条件下,间期都出现最高频率,前期次之,中、后、末期又次之。供试材料之间无显著差异。温度效应农现为:25°C下前、中、后、末期出现高峰,而同期高峰出现在15°C和30°C。取样时间对各阶段频率无显著影响,说明研究禾本科牧草有丝分裂可随时取样,不必限制在某一固定时间。

关键词：禾本科牧草老芒麦无芒雀麦披碱草频率分布温度效应取材时间取样时间 inermis 差异显著性

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

盐城滩涂的牙獐

大自然 1992年第4期13卷 23-23页

作者：王会江苏盐城自然保护区

牙獐,即獐,又称河麂(Hydropotes inermis),过去曾分布于我国的东部大陆近水区域,但由于栖息地的变迁和人类的干扰,獐的适栖地越来越小,缩小成现在的几个"生态孤岛",如阿绿江流域、潘阳湖岸区、舟山群岛.而江苏盐城沿海滩涂就成为目前最... 详细信息

牙獐,即獐,又称河麂(Hydropotes inermis),过去曾分布于我国的东部大陆近水区域,但由于栖息地的变迁和人类的干扰,獐的适栖地越来越小,缩小成现在的几个"生态孤岛",如阿绿江流域、潘阳湖岸区、舟山群岛.而江苏盐城沿海滩涂就成为目前最大的聚集地,最近的调查表明,盐城滩涂现存牙獐1700头左右.牙獐体型较小,成年一般体重在13-17公斤,体长约1米,雌雄均无角,是鹿科动物中较原始的类群.雄獐上犬齿发达,向下伸延,形成獠牙,突出口外.獐四肢健壮,后肢稍高于前肢,尾短.几被臀部的毛所遮盖,因此当地老百姓又称獐为"无尾鹿".

关键词：盐城滩涂鹿科动物河麂 inermis 江苏盐城沿海滩涂性成熟枯草期保护区管理山羊乳