检索结果-南通市图书馆

Phytochemical Determination and Antibacterial Activity of Punica granatum Peel Extracts against Plant Pathogenic Bacteria

引用

American Journal of Plant Sciences 2016年第1期7卷 159-166页

作者： Ayad Ismael Khaleel Kamaruzaman Sijam tavga sulaiman rashid Khairulmazmi Bin Ahmad Plant Protection Department Faculty of Agriculture Universiti Putra Malaysia Serdang Malaysia

Plant pathogenic bacteria are recognized to be harmful microbes able to decrease the quantity and quality of crop production in the world. Punica granatum peel was screened for its potential use as biological control agent for plant pathogenic bacteria. P. granatum peel was successfully extract using n-hexane, methanol and ethyl acetate by maceration. The highest yield obtained by ethyl acetate showed that ethyl acetate extracted more compounds that readily soluble to methanol and n-hexane. For in-vitro antibacterial activity, three different species of plant pathogenic bacteria were used namely Erwinia carotovorum subsp. Carotovorum, Ralstonia solanacearum, and Xanthomonas gardneri. For all crude extracts, four different concentrations 25, 50, 100 and 200 mg/ml were used in cup-plate agar diffusion method. Streptomycin sulfate at concentration 30 μg/ml was used as positive control while each respective solvent used for peel extraction was used as negative control. The results obtained from in vitro studies showed only ethyl acetate extract possessed antibacterial activity tested on the plant pathogenic bacteria. Methanol and n-hexane did not show any antibacterial activity against plant pathogenic bacteria selected where no inhibition zones were recorded. R. solanacearum recorded the highest diameter of inhibition zones for all range of concentrations introduced followed by E. carotovorum subsp. Carotovorum and X. gardneri. For the minimum inhbitory concentration (MIC) and minimum bactericidal concentration (MBC), only the ethyl acetate extract was subjected to the assay as only ethyl acetate extract exhibited antibacterial activity. The minimum concentration of ethyl acetate extract that was able to inhibit plant pathogenic bacteria was recorded at a concentration of 3.12 mg/ml which inhibited R. solancearum and E. carotovorum subsp. Carotovorum, followed by X. gardneri at concentration 6.25 mg/ml. For the minimum bactericidal concentration (MBC), the results show

关键词： Punica granatum Plant Extraction Pathogenic Bacteria Phytochemical Screening

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

Gc-Ms Analysis and Antibacterial Activity of Mangosteen Leaf Extracts against Plant Pathogenic Bacteria

引用

American Journal of Plant Sciences 2016年第7期7卷 1013-1020页

作者： Qamar Mohammed Naji Alsultan Kamaruzaman Sijam tavga sulaiman rashid Khairulmazmi Bin Ahmad Department of Plant Protection Faculty of Agriculture University Putra Malaysia UPM Serdang Malaysia

The potential of Garcinia mangostana as a biological control agent against plant pathogenic bacteria which decrease the quality and volume of crop production worldwide was assessed. Mangosteen leaves were extracted by maceration using chloroform, n-hexane, and methanol. For the in vitro antibacterial activity, two dissimilar species of plant pathogenic bacteria: Pseudomonas syringe pv. tomato and Xanthomonas oryzae pv. oryzae were acquired. Four different concentrations, 12.5, 25, 50, and 100 mg/ml were obtained through the cup-plate agar diffusion technique. Streptomycin sulphate at 30 μg/ml concentration was set as the positive control, whereas every respective solvent used in the leaf extraction was set as the negative control. The results have shown that, only methanol extract demonstrated antibacterial activity when tested on the plant pathogenic bacteria. The highest diameter of inhibition zones was observed in X. oryzae pv. oryzae, at all range of concentrations, followed by P. syringae pv. tomato. The least methanol extract concentration utilised in determination of minimum inhibitory concentration (MIC) assay was at 1.562 mg/ml, inhibiting X. oryzae pv. oryzae, followed by P. syringe pv. tomato at a concentration 3.125 mg/ml. Antibacterial impacts of the most effectual extract of mangosteen crude were supported by the existence of chemical components identified by GC-MS. Cycloartenol, Caryophyllene, Docosane, Phenol, 4,4-Methylenebis (2,6-di-tert-butylphenol) and Chromium were noted as key compounds in the mangosteen leaf extract, which were perhaps causing the antibacterial activity.

关键词： Pseudomonas syringae Xanthomonas oryzae Garcinia mangostana and Methanol Extract

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

Bioactive Compounds Produced by Streptomyces sp. Isolate UPMRS4 and Antifungal Activity against Pyricularia oryzae

引用

American Journal of Plant Sciences 2016年第7期7卷 1077-1085页

作者： Hayman Kakakhan Awla Jugah Kadir Radziah Othman tavga sulaiman rashid Mui-Yun Wong Department of Plant Protection Faculty of Agriculture Universiti Putra Malaysia Serdang Malaysia Department of Land Management Faculty of Agriculture Universiti Putra Malaysia Serdang Malaysia Institute of Tropical Agriculture Universiti Putra Malaysia Serdang Malaysia

A Streptomyces isolate having antifungal activity against Pyricularia oryzae, the causal agent of rice blast disease, was isolated from soil collected in rice fields of Tanjung Karang Selangor, peninsula *** aim of the study was to determine the antifungal activity of Streptomyces sp. isolate UPMRS4 extracts against P. oryzae and to identify bioactive antifungal compounds produced by UPMRS4. Various solvents were used for extraction of antifungal compounds and well diffusion method was used to determine the antifungal activity of the extracts. The ethyl acetate extract demonstrated the highest activity against mycelial growth of P. oryzae, with an effective inhibitory concentration (EIC) of 1.562 μg/ml significantly higher compared to that of chloroform, diethyl ether, methanol, acetone, ethanol and water. Based on GC-MS and LC-MS/MSanalyses,compounds with antifungal activity were detected such as (Pyrrolo[1,2-a] pyrazine-1,4-dione, hexahydro-3-(2-methylpropyl);Pyrrolo[1,2-a] pyrazine-1,4-dione, hexahydro-3-(phenylmethyl);ergotamine;amicomacin;fungichromin;rapamycin and N-Acetyl-D, L-phenylalanine. These compounds had good general antifungal activity and might have potential future agricultural applications.

关键词： GCMS LCMS/MS Antifungal Streptomyces sp. and Rice Blast

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

Pathogenicity Assay and Molecular Identification of Fungi and Bacteria Associated with Diseases of Tomato in Malaysia

引用

American Journal of Plant Sciences 2016年第6期7卷 949-957页

作者： tavga sulaiman rashid Kamaruzaman Sijam Hayman Kakakhan Awla Halimi Mohd Saud Jugah Kadir Department of Plant Protection Faculty of Agriculture University Putra Malaysia Serdang Malaysia Department of Plant Protection Faculty of Agriculture University of Salahaddin Erbil Iraq

This study was conducted in order to determine the fungi and bacteria associated with tomato plants at Cameron Highlands Malaysia. The fungi which have been isolated and detected from tomato plants were: Fusarium oxysporum, F. solani, F. acuminatum, Rhizoctonia solani, Colletotrichum boninense, C. acutatum and Phoma destructiva. The bacteria which have been isolated and detected from tomato plants were: Ralstonia solanacearum, Xanthomonas vesicatoria, X. gardneri and Pseudomonas syringae. While the most pathogenic fungi were C. boninense, P. destructive and F. oxysporum with the disease incidence (89.6%, 86.6%, 85.6%) respectively, the most pathogenic bacteria were X. vesicatoria and R. solanacearum with the disease incidence (96.6% and 87.6%) respectively.

关键词： Lycopersicon esculentum Pathogen Isolation and Molecular Identification

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

Biological Control of <i>Pyricularia oryzae</i>Using Antifungal Compounds Produced by <i>Aspergillus niger</i>

引用

American Journal of Plant Sciences 2017年第10期8卷 2445-2460页

作者： Ali Abdulameer Idan Kamaruzaman Sijam Jugah Kadir tavga sulaiman rashid Hayman Kakakhan Awla Wael Alsultan Plant Protection Department Faculty of Agriculture Universiti Putra Malaysia Serdang Malaysia Department of Plant Protection Faculty of Agriculture University of Kufa Najaf Iraq Department of Plant Protection Faculty of Agriculture University of Salahaddin Erbil Iraq Department of Plant Protection Khabat Institute Erbil Polytechnic University Erbil Iraq

Aspergillus spp. has been widely found as useful microorganism in biotechnology. They have a high ability in the production of secondary metabolites. Therefore, isolates of Aspergillus were isolated from healthy rice field located in Selangor State/Malaysia. The obtained strain (UPMZ01) was conducted against Pyricularia oryzea by applying dual culture and culture filtrate technique. The antagonism of strain UPMZ01 in the dual culture was 81.326% inhibition percentage against P. oryzae given the optimum inhibitory percentage 100% at all concentration of secondary metabolites aged 14 days. The isolate (UPMZ01) was identified as Aspergillus niger with accession number (KY698415). The environment factors such as pH and temperature influencing on production of secondary metabolites. The results were shown that pH at level 5.0 and temperature between 21℃?to 29℃?is the optimum condition for A. niger to produce efficient antifungal metabolites which given 100% PIGR against blast pathogen. The secondary metabolites compounds were identified by Gas Chromatography-Mass Spectrometry (GC-MS). Fifteen compounds were recognized as major compounds which may have the possibility of possessing antifungal characteristics. Most of identified compounds are Oleic Acid, n-Hexadecanoic acid, Hexose, Glycerol, Stearic acid, Tetradecanoic acid, Dodecanoic acid and 5-Hydrxoymethylfurfural.

关键词： Blast Disease Aspergillus sp. Pyricularia oryzae Antifungal Compounds 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

Peptic Ulcer Diseases among Migrant Workers in Saudi Arabia

引用

Journal of Biosciences and Medicines 2024年第11期12卷 57-69页

作者： Nahlah Alsogaih Juliann Saquib rashid Alshammari Muneeb Qayyum Muath Alzughabi Khalid Alkhiari Ahmed Dildar Abdulrahman Almazrou Nazmus Saquib College of Medicine Sulaiman Al Rajhi University Al Bukayriyah Saudi Arabia

Background: Although migrant workers make up nearly one-third of the Saudi population, there is no data on peptic ulcer diseases (PUD) among them. We aimed to assess the prevalence and risk factors of PUD in a sample of migrant workers in Saudi Arabia. Methods: Migrant workers (n = 2123) from seven different occupations (i.e., auto repair, construction, hairdressers, hospital cleaners, poultry factory, restaurants, and city cleaners) from Al Qassim province in Saudi Arabia participated in this cross-sectional study. They were interviewed using a standardized questionnaire on demography, lifestyle, job factors, and chronic health conditions. A worker had PUD if he reported having this condition diagnosed by a physician and was taking medication for it. Binary logistic regression was employed to explore risk factors of PUD. Results: The mean age (standard deviation) was 35 ± 9 years. The prevalence of PUD was 4% and varied by occupation, with the highest among auto-repair workers (8.3%) and the lowest among construction workers (1.8%). Lifestyle characteristics such as diet, self-rated health status, smoking, and stress, were significantly associated with peptic ulcers. Conclusion: The prevalence of peptic ulcers among migrant workers in Saudi Arabia (4%) was not significantly different from the general population or the global prevalence of 5% - 10%. Further studies are needed to validate these findings.

关键词： Epidemiology Migrant Workers Occupation Peptic Ulcer Disease Saudi Arabia

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

Risk and predictors of severity and mortality in patients with type 2 diabetes and COVID-19 in Dubai

引用

World Journal of Diabetes 2023年第8期14卷 1259-1270页

作者： Fatheya Alawadi Alaaeldin Bashier Azza Abdulaziz Bin Hussain Nada Al-Hashmi Fawzi Al Tayb Bachet Mohamed Mahmoud Aly Hassanein Marwan Abdelrahim Zidan Rania Soued Amar Hassan Khamis Debasmita Mukhopadhyay Fatima Abdul Aya Osama Fatima sulaiman Muhammad Hamed Farooqi Riad Abdel Latif Bayoumi Department of Endocrinology Dubai Academic Health CorporationDubaiUnited Arab Emirates Department of Medical Education and Research Dubai Academic Health CorporationDubaiUnited Arab Emirates Department of Radiology Mediclinic City HospitalDubaiUnited Arab Emirates College of Medicine Mohamed Bin Rashid University of Medicine and Health SciencesDubaiUnited Arab Emirates Dubai Diabetes Center Dubai Academic Health CorporationDubaiUnited Arab Emirates Basic Medical Sciences College of MedicineMohammed Bin Rashid University of Medicine and Health SciencesDubaiUnited Arab Emirates

BACKGROUND Globally,patients with diabetes suffer from increased disease severity and mortality due to coronavirus disease 2019(COVID-19).Old age,high body mass index(BMI),comorbidities,and complications of diabetes are recognized as major risk factors for infection severity and *** To investigate the risk and predictors of higher severity and mortality among inhospital patients with COVID-19 and type 2 diabetes(T2D)during the first wave of the pandemic in Dubai(March–September 2020).METHODS In this cross-sectional nested case-control study,a total of 1083 patients with COVID-19 were *** study included 890 men and 193 *** these,427 had T2D and 656 were *** clinical,radiographic,and laboratory data of the patients with and without T2D were *** predictors of mortality in COVID-19 non-survivors were identified in patients with and without *** T2D patients with COVID-19 were older and had higher BMI than those without *** had higher rates of comorbidities such as hypertension,ischemic heart disease,heart failure,and more life-threatening *** laboratory parameters of disease severity were significantly higher than in those without ***,these patients had a longer hospital stay and a significantly higher mortality *** died from COVID-19 at a rate three times higher than patients *** laboratory and radiographic severity indices in non-survivors were high in patients with and without *** the univariate analysis of the predictors of mortality among all COVID-19 non-survivors,significant associations were identified with old age,increased white blood cell count,lymphopenia,and elevated serum troponin *** multivariate analysis,only lymphopenia was identified as an independent predictor of mortality among T2D *** Patients with COVID-19 and T2D were older with higher BMI,more comorbidities,higher disease severity indices,more severe proinflamma

关键词： Type 2 diabetes COVID-19 Risk factors Mortality United Arab Emirates

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

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

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：