检索结果-南通市图书馆

Antimicrobial activity and essential oils of Curcuma aeruginosa,Curcuma mangga,and Zingiber cassumunar from Malaysia

引用

Asian Pacific Journal of Tropical Medicine 2012年第3期5卷 202-209页

作者： Tg Siti Amirah Tg Kamazeri Othman Abd Samah muhammad taher Deny Susanti Haitham Qaralleh Department of Biomedical Science Kulliyyah of ScienceInternational Islamic University MalaysiaJalan IstanaBandar Indera Mahkota25200 KuantanPahangMalaysia Kulliyyah of Pharmacy International Islamic University MalaysiaJalan IstanaBandar Indera Mahkota25200 KuantanPahangMalaysia

Objective:To analyze the chemical composition of the essential oils of Curcuma aeruginosa (***),Curcuma mangga(***),and Zingiber cassumunar(***). and study their antimicrobial ***:Essential oils obtained by steam distillation were analyzed by gas chromatography-mass speclrometry(GC-MS).The antimicrobial activity of the essential oils was evaluated against four bacteria:Bacillus cereus(***).Staphylococcus aureus(***).Escherichia coli(***).and Pseudomonas aeruginosa(***);and two fungi:Candida albicans(***) and Cyptococcus neoformans(***),using disc-diffusion and broth microdilution ***:Cycloisolongifolene,8.9-dehydro-9- formyl(35.29%) and dihydrocoslunolide(22.51%) were the major compounds in *** oil; whereas caryophyllene oxide(18.71%) and caryophyllene(12.69%) were the major compounds in *** oil:and 2,6.9,9-tetramethyl-2.6.10-cycloundecatrien-1-one(60.77%) andα-caryophyllene(23.92%) were abundant in *** *** essential oils displayed varying degrees of antimicrobial activity against all lested *** oil had the highest and most broad-spectrum activity by inhibiting all microorganisms tested,with *** being the most sensitive microorganism by having the lowest minimum inhibitory concentration(MIC) and minimum fungicidal concentration(MFC) values of 0.1μL/mL. *** oil showed mild antimicrobial activity,whereas *** had very low or weak activity against the tested ***:The preliminary results suggest promising antimicrobial properties of *** and ***,which may be useful for food preservation,pharmaceutical treatment and natural therapies.

关键词： Antimicrobial Gas chromatography-mass spectrometry Essential oil Curcuma aeruginosa Curcuma mangga Zingiber cassumunar

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

Antimicrobial activity of mangrove plant(Lumnitzera littorea)

引用

Asian Pacific Journal of Tropical Medicine 2011年第7期4卷 523-525页

作者： Shahbudin Saad muhammad taher Deny Susanti Haitham Qaralleh Nurul Afifah Binti Abdul Rahim Institute of Oceanography and Maritime Studies Kulliyyah of ScienceInternational Islamic University MalaysiaJalan Sultan Ahmad ShahBandar Indera Mahkota25200 KuantanPahangMalaysia Department of Pharmaceutical Technology Faculty of PharmacyInternational Islamic University MalaysiaJalan Istana25200 KuantanPahangMalaysia Department of Biomedical Science Faculty of ScienceInternational Islamic University MalaysiaJalan Istana25200 KuantanPahangMalaysia

Objective:To investigate the antimicrobial activities of *** acetate and methanol extracts of the leaves of Lumnitzera littorea(L littorea) against six human pathogenic microbes. Methods:The antimicrobial activity was evaluated using disc diffusion and microdilution ***:The antimicrobial activities of the crude extracts were increased with increasing the *** is clear that n-hexane extract was the most effective extract. *** positive Bacillus cereus(***) appear to be the most sensitive strain while Pseudomonas aeruginosa(***) and the yeast strains(Candida albicans(C. albicans) and Cryptococcus neoformans(***)) appear to be resistance to the tested concentrations since no inhibition zone was *** inhibition of microbial growth at concentration as low as 0.04 mg/*** the potent antimicrobial activity of L littorea ***:The obtained results are considered sufficient for further study to isolate the compounds responsible for the activity and suggesting the possibility of finding potent antibacterial agents from L littorea extracts.

关键词： Antimicrobial Lumnitzera littorea Mangroves

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

In vitro antimicrobial activity of mangrove plant Sonneratia alba

引用

Asian Pacific Journal of Tropical Biomedicine 2012年第6期2卷 427-429页

作者： Shahbudin Saad muhammad taher Deny Susanti Haitham Qaralleh Anis Fadhlina Izyani Bt Awang Institute of Oceanography and Maritime Studies Kulliyyah of Science International Islamic University MalaysiaJalan Sultan Ahmad ShahBandar Indera Mahkota25200 Kuantan Pahang Malaysia Department of Pharmaceutical Technology Faculty of Pharmacy International Islamic University MalaysiaJalan Sultan Ahmad Shah25200Kuantan Pahang Malaysia Department of Biomedical Science Faculty of Science International Islamic University MalaysiaJalan Sultan Ahmad Shah25200 KuantanPahang Malaysia

Objective:To investigate the antimicrobial property of mangrove plantSonneratia alba(S. alba).Methods:The antimicrobial activity was evaluated using disc diffusion and microdilution methods against six microorganisms. Soxhlet apparatus was used for extraction with a series of solvents,n-hexane, ethyl acetate and methanol in sequence of increasing ***:Methanol extract appeared to be the most effective extract whilen-hexane extract showed no activity. The antimicrobial activities were observed against the gram positive bacteria Staphylococcus aureus(S. aureus) and Bacillus cereus(B. cereus), the gram negative Escherichia coli(E. coli) and the yeast Cryptococcus neoformans. Pseudomonas aeruginosa and Candida albicans appeared to be not sensitive to the concentrations tested since no inhibition zone was observed.E. coli(17.5 mm) appeared to be the most sensitive strain followed by S. aureus(12.5 mm)and B. cereus(12.5 mm).Conclusions:From this study, it can be concluded that S. alba exhibit santim icrobial activities against certain microorganisms.

关键词： Antibacterial Antifungal Sonneratia alba Mangroves Antimicrobial activity

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

Apoptosis,antimicrobial and antioxidant activities of phytochemicals from Garcinia malaccensis Hk.f

引用

Asian Pacific Journal of Tropical Medicine 2012年第2期5卷 136-141页

作者： muhammad taher Deny Susanti Mohamad Fazlin Rezali Farah Syahidah Ahmad Zohri Solachuddin Jauhari Arief Ichwan Suhaib Ibrahim Alkhamaiseh Farediah Ahmad Department of Pharmaceutical Technology Kulliyyah of PharmacyInternational Islamic University MalaysiaJalan IstanaBandar Indera Mahkota25200 KuantanPahangMalaysia Department of Biomedical Science Kulliyyah of ScienceInternational Islamic University MalaysiaJalan IstanaBandar Indera Mahkota25200 KuantanPahangMalaysia SIRIM Rerhad(National Metrology Laboratory) Lot PT 4803Bandar Baru Salak Tinggi43900 SepangSelangorMalaysia Kulliyyah of Dentistry International Islamic University MalaysiaJalan IstanaBandar Indera Mahkota25200 KuantanPahangMalaysia Department of Chemistry Faculty of ScienceUniversity Teknologi Malaysia81310 UTMJohorMalaysia

Objective:To study the chemical constituents of stembark of Garcinia malaccenm（***） together with *** and antioxidant ***:Purification and structure elucidation were carried out by chromatographic and spectroscopic techniques, *** and trypan blue exclusion methods were performed to study the cytotoxic *** activity was conducted by dise diffusion and microdilulion methods, whereas antioxidant activities were done by ferric thiocyanate method and DPPH radical ***:The phylochemical study led lo the isolation ofα,β-mangostin and cycloarl-24-en-3β-ol.α-Mangostin exhibited cytotoxic activity against HSC-3 cells with an IC50 of 0.33μM.β- andα-mangostin showed activity against K562 cells with IC50 of 0.40μM and 0.48μM,respectively,α-Mangostin was active against Gram-positive bacteria, Staphylococcus aureus（***） and Bacilus anthracis（***） with inhibition zone and MIC value of（19 mm;0.02S mg/mL） and（20 mm;0.013 mg/mL）,*** antioxidant assay,α-mangostin exhibited activity as an inhibitor of lipid ***:*** presenceα- andβ-mangostin and cycloart-24-en-3β-ol.β-Mangostin was found very active against ***-3 cells and *** results suggest that mangoslins derivatives have the potential to inhibit the growth of cancer cells by inducing *** addition,α-andβ-mangostin was found inhibit the growth of Cram-positive pathogenic bacteria and also showed the activity as an inhibitor of lipid peroxidation.

关键词： Garcinia malaccensis Guttiferae Apoptosis Antibacterial Antioxidant

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

Polyphenol content and antioxidant capacity in organically and conventionally grown vegetables

引用

Journal of Coastal Life Medicine 2014年第11期 864-871页

作者： Kevser Unal Deny Susanti muhammad taher Department of Biomedical Science Kulliyah of ScienceInternational Islamic University MalaysiaJalan Sultan Ahmad Shah25200 KuantanPahangMalaysia Department of Chemistry Kulliyah of ScienceInternational Islamic University MalaysiaJalan Sultan Ahmad Shah25200 KuantanPahangMalaysia Department of Pharmaceutical Technology Kulliyah of PharmacyInternational Islamic University MalaysiaJalan Sultan Ahmad Shah25200 KuantanPahangMalaysia

Objective:To evaluate the polyphenol content and antioxidant capacity of ethanol extracts of some organically and conventionally grown leafy ***:The ethanol extracts of kailan(Brassica alboglabra),bayam(Amaranthus spp.)and sawi(Brassica parachinensis)were tested for total phenolic content(TPC),total flavonoid content(TFC),and total anthocyanin content(TAC)and the antioxidant capacity of the extracts measured using 2,2-diphenyl-1-picrylhydrazyl ***:In TPC test,sawi extract showed the highest phenolic content while bayam contained the least phenolic content for both organically and conventionally grown *** TFC test,organically grown sawi extract showed the highest flavonoid content,while organically grown kailan extract showed the least flavonoid content among all types of *** flavonoid content of the conventionally grown types of vegetable extracts was the highest in kalian and the least in *** 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity,the activity increased with the increasing concentration of each *** conventionally grown vegetable extracts showed higher antioxidant activity compared to their organically grown *** of conventionally grown sawi showed the highest percentage inhibition followed by conventionally grown kailan and organically grown *** were no correlation between TPC,TFC,TAC and IC_(25)of both organically and conventionally grown ***,there was a correlation between TAC and IC_(25)of conventionally grown vegetable *** results showed relatively similar polyphenol content between organically and conventionally grown vegetable ***,the conventionally grown vegetables extracts generally have higher antioxidant activity compared to the organically grown ***:These results suggested that the different types of agricultural practice had a significant contribution to the polyphenol content and antioxidant activity in

关键词： Vegetable Organic Non-organic Antioxidant Polyphenol

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

In vitro antioxidant,cholinesterase and tyrosinase inhibitory activities of Calophyllum symingtonianum and Calophyllum depressinervosum(Guttiferae)

引用

Journal of Coastal Life Medicine 2015年第2期 126-131页

作者： Nurul Iman Aminudin Farediah Ahmad muhammad taher Department of Chemistry Faculty of ScienceUniversiti Teknologi Malaysia81310 Skudai JohorMalaysia Kulliyyah of Pharmacy International Islamic University MalaysiaJalan Sultan Ahmad ShahBandar Indera Mahkota25200 KuantanPahangMalaysia

Objective:To screen the antioxidant,cholinesterase and tyrosinase enzymatic inhibition activities of the leaves and heartwood of Calophyllum symingtonianum(***),and the bark of Calophyllum depressinervosum(***).Methods:Samples of leaves and heartwood of *** and bark of *** were tested for their total phenolic content and in vitro antioxidant assay by 2,2-diphenyl-1-picrylhydrazyl radical scavenging and β-carotene *** inhibition by Ellman’s method and tyrosinase inhibition using L-3,4-dihydroxyphenylalanine as a substrate were also ***:All methanol extracts were found to exhibit strong 2,2-diphenyl-1-picrylhydrazyl radical scavenging *** from the heartwood of *** gave a low IC50(5.17±0.04)μg/mL followed by bark of ***[(7.30±0.14)μg/mL]and *** leaves[(15.70±1.43)μg/mL].The methanol extract of *** bark showed 95.08%inhibition ofβ-carotene *** extracts showed moderate inhibition towards tyrosinase activity with an IC50 of more than 100μg/*** methanol extract of *** stem bark showed the highest inhibition(78.46%)against ***:These results showed that both Calophyllum species are potential sources of antioxidant and cholinesterase *** study is needed for the isolation and characterization of the active metabolites responsible for both activities.

关键词： Calophyllum symingtonianum Calophyllum depressinervosum Antioxidant Cholinesterase Tyrosinase Guttiferae

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

Antioxidant,antimicrobial and total phenolic contents of Calophyllum symingtonianum

引用

Journal of Coastal Life Medicine 2013年第1期 50-54页

作者： Nissad Attoumani Deny Susanti muhammad taher Department of Biotechnology Faculty of ScienceInternational Islamic University MalaysiaJalan Sultan Ahmad ShahBandar Indera Mahkota25200 KuantanPahangMalaysia Department of Pharmaceutical Technology Faculty of PharmacyInternational Islamic University MalaysiaJalan Sultan Ahmad ShahBandar Indera Mahkota25200 KuantanPahangMalaysia

Objective:To determine the total phenolic content,antioxidant and antimicrobial activities of the extracts from Calophyllum ***:The extracts were tested for their antioxidant activity by the DPPH radical scavenging assay and the β-carotene bleaching assay,while the antimicrobial activity was determined by disc diffusion ***:All the tested extracts showed antioxidant and antimicrobial *** extracts showed moderate antimicrobial activity against Staphylococcus aureus with zone of inhibition values of 10,11 and 12 mm for n-hexane,dichloromethane and methanol extracts respectively at 30μg/disc.N-hexane showed low antimicrobial activity against Pseudomonas aeruginosa(5 mm)at 30μg/*** total phenolic test showed that methanol has high phenolic content(162.25 mg GAE/g of extract)compared to the other ***:The ability of the extracts to inhibit microbial growth at a concentration of 30μg/disc indicated the its potent antimicrobial activity.

关键词： Calophyllum symingtonianum Antioxidant Antimicrobial Total phenolic content

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

Generation of Current-Mode Power Law Function and AM Modulator/Demodulator Using Configurable Analog Blocks（CABs） for Field Programmable Analog Arrays

Generation of Current-Mode Power Law Function and AM Modulat...

引用

The second International Conference of Electrical and Electronics Engineering(ICEEE 2011)

作者： muhammad taher Abuelma'atti Osama Oglah Fares University of Hail

In this paper, the design of a power-law function generator and AM modulator/demodulator using configurable analog blocks（CABs） for filed programmable analog arrays（FPAAs） is presented. To maintain high frequency operation, the programmability and configurability of the CABs are achieved by digitally modifying the CABs biasing conditions. Using at most four CABs it is possible to design a current-mode power-law function generator and AM modulator/demodulator. SPICE simulation results are included.

关键词： Power law function generator AM modulator/demodulator configurable analog building blocks field programmable analog arrays

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Direct and indirect antimicrobial effects of α-mangostin on pathogenic microorganisms

引用

Journal of Coastal Life Medicine 2014年第1期 70-75页

作者： Nurul Huda Syed Ibrahim muhammad taher Deny Susanti Mohamed ZaffarAli Mohamed Amiroudine Qamar Uddin Ahmed Department of Biomedical Science Faculty of ScienceInternational Islamic University Malaysia25200 KuantanPahangMalaysia Department of Pharmaceutical Technology Faculty of PharmacyInternational Islamic University Malaysia25200 KuantanPahangMalaysia Department of Chemistry Faculty of ScienceInternational Islamic University Malaysia25200 KuantanPahangMalaysia Department of Pharmaceutical Chemistry Faculty of PharmacyInternational Islamic University Malaysia25200 KuantanPahangMalaysia

Objective:To test direct and indirect antimicrobial properties of α-mangostin towards a number of bacteria and ***:Activity of α-mangostin paired with an antibiotic was studied by calculating its fractional inhibitory concentration(FIC).Results:The experiment was carried out using broth microdilution and checkerboards *** showed no interaction with the combination withα-mangostin where the FIC indexes were between the range of 0.5*** of doxycycline on Pseudomonas aeruginosa fell into other set of range,FIC_(index)≥4 which is an *** activity of all four bacteria towards ampicillin,penicillin G,streptomycin and Conclusions:The FIC index is far away in the *** coupled antibiotic andα-mangostin is considered synergy in action if it lies in FIC_(index)≤0.5 and it was found that the isolated compound,α-mangostin revealed very low synergistic antimicrobial effects when coupled with antibiotics.

关键词： α-mangostin Direct Indirect Antimicrobial FIC index

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

Antioxidant and antimicrobial activities of Shorea kunstleri

引用

Journal of Coastal Life Medicine 2014年第8期 638-644页

作者： Siti Suria Daud muhammad taher Deny Susanti Mohamed Zaffar Ali Mohamed Amiroudine Tengku Muhamad Faris Syafiq Tengku Zakaria Department of Biomedical Science Faculty of ScienceInternational Islamic University Malaysia25200 KuantanPahangMalaysia Department of Pharmaceutical Technology Faculty of PharmacyInternational Islamic University Malaysia25200 KuantanPahangMalaysia Department of Chemistry Faculty of ScienceInternational Islamic University Malaysia25200 KuantanPahangMalaysia

Objective:To evaluate antioxidant and antimicrobial activities of stembark of Shorea kunstleri(***)together with analysis of phytochemical and total phenolic ***:Extraction was conducted with different solvent polarity of n-hexane,dichloromethane(DCM)and methanol by using Soxhlet *** phenolic content was determined using Folin-Ciocalteu *** radical scavenging activity and inhibition of lipid peroxidation were evaluated with DPPH radical scavenging and ferric thiocyanate assays,*** activities were performed using disc diffusion method,minimum inhibition concentration(MIC),minimum bactericidal concentration(MBC),and minimum fungicidal ***:*** stembark extracts revealed presence of steroids,terpenoids,saponins,flavonoids,and phenolic *** extract exhibited the highest total phenolic content and free radical scavenging activity resulting in phenolic content of(8.340±0.003)g GAE/100 g of extract and(95.90±1.07)%DPPH inhibition(IC_(50)value of 18.6μg/mL),*** thiocyanate assay of n-hexane,DCM,and methanol extracts indicated lipid peroxidation inhibitory activity of(74.20±0.35)%,(74.00±0.10)%,and(72.80±0.27)%,*** antimicrobial and antifungal tests,methanol extract showed inhibition against Staphylococcus aureus(***),Candida albicans,and Candida tropicalis with inhibition zones of 10-12,18-22,and 18-19 mm,*** MIC test of methanol extract showed highest inhibition against Candida albicans and ***(0.04 and 0.08 mg/mL,respectively)while DCM extract exhibited the highest activity towards Candida tropicalis(MIC value of 0.63 mg/mL).Taken together,MBC test of methanol extract strongly demonstrated bactericidal effect against *** with MBC value of 0.08 mg/***:The study demonstrated that stembark extracts of *** possessed antioxidant and antimicrobial properties.

关键词： Shorea kunstleri Phytochemicals Antioxidant Antimicrobial

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

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

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：