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Antimicrobial effect of Malaysian vegetables against enteric bacteria

Asian Pacific Journal of Tropical Biomedicine 2016年第3期6卷 211-215页

作者： Hassanain Al-Talib Norliana Dalila Mohamad Ali Mohamed Harreez Suhaimi Siti Shafika Nabila Rosli nurul Huda Othman nur ain sakinah mansor Amira Kartini Sulaiman Shah nurul Syuhada Ariffin Alyaa Al-Khateeb Laboratory Medical Science Cluster Faculty of Medicine Universiti Teknologi MARA (UiTM) Faculty of Medicine Universiti Teknologi MARA (UiTM)

Objective: To investigate the antibacterial activities of green vegetables(pennywort,mint, garlic, parsley and celery) against four common enteric bacteria [Salmonella enterica(ATCC 25957)(S. enterica), Shigella flexneri(ATCC 12022)(S. flexneri),Escherichia coli(ATCC 43889)(E. coli) and Enterobacter cloacae(ATCC 13047)(E. cloacae)] as an alternative medicine for controlling food borne diarrhea disease and the synergistic effect of green vegetables against those ***: Five common vegetables(pennywort, mint, garlic, parsley and celery) were purchased and extracted. The antimicrobial activities of these extracts were tested against four common enteric bacteria(S. enterica, S. flexneri, E. coli and E. cloacae). Ten different concentrations of the extracts(from 640 to 1.25 mg/m L) were prepared and used for the study. The minimal inhibitory concentration(MIC) was determined by the broth dilution method. The antimicrobial activities were assessed by using both well diffusion and disc diffusion ***: Garlic extract showed excellent inhibitory effects on all enteric bacteria. Other plants(parsley, celery, mint and pennywort) were not effective against enteric *** MIC of garlic against S. flexneri and E. cloacae was 40 mg/m L. The MIC of S. enterica and E. coli were 20 and 10 mg/m L, respectively. The performance of the well diffusion method was better than that of the disc diffusion method with clear and sharp inhibition zones of tested bacteria against plant ***: Garlic had excellent antimicrobial effects against enteric bacteria and was recommended to be given to patients with gastroenteritis. The other vegetables(pennywort, mint, parsley and celery) showed no inhibitory effects on enteric bacteria but still can be used for its richness in vitamins and fibers. The performance of the well diffusion method was better than that of the disc diffusion method in detecting the antibacterial effects of green vegetables.

关键词： Antibacterial activities Green vegetables Enteric bacteria Inhibitory effects

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Tolerance and biosorption of copper (Cu) and lead (Pb) by filamentous fungi isolated from a freshwater ecosystem

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Journal of Environmental Sciences 2011年第5期23卷 824-830页

作者： nur Liyana Iskandar nur ain Izzati Mohd Zainudin Soon Guan Tan Department of Biology Faculty of Science Universiti Putra Malaysia Department of Biology Faculty of ScienceUniversiti Putra Malaysia Department of Cell and Molecular Biology Faculty of Biotechnology and Biomolecular SciencesUniversiti Putra Malaysia

Filamentous fungi are able to accumulate significant amount of metals from their environment. The potential of fungal biomass as agents for biosorption of heavy metals from contaminated sediments is currently receiving attention. In the present study, a total of 41 isolates of filamentous fungi obtained from the sediment of the Langat River, Selangor, Malaysia were screened for their tolerance and uptake capability of copper （Cu） and lead （Pb）. The isolates were identified as Aspergillus niger, A. fumigatus, Trichoderma asperellum, Penicillium simplicissimurn and P. janthinellum. A. niger and P. simplicissimum, were able to survive at 1000 mg/L of Cu（Ⅱ） concentration on Potato Dextrose Agar （PDA） while for Pb, only A. niger survived at 5000 mg/L concentration. The results showed that A. niger, P. simplicissimum and T. asperellum have a better uptake capacity for Pb compared to Cu and the findings indicated promising biosorption of Cu and Pb by these filamentous fungi from aqueous solution. The present study was also determined the maximum removal of Cu（Ⅱ） and Pb（Ⅱ） that was performed by A. niger. The metal removal which occurred at Cu（Ⅱ） 200 mg/L was （20.910 ＋ 0.581） mg/g and at 250 mg/L of PbⅡ） was （54.046 ± 0.328） mg/g.

关键词： biosorption copper lead Aspergillus niger Penicillium simplicissimum Trichoderma asperellum

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Potential use of nanofiltration like-forward osmosis membranes for copper ion removal

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Chinese Journal of Chemical Engineering 2020年第2期28卷 420-428页

作者： Wan nur ain Shuhada Abdullah Sirinan Tiandee Woeijye Lau Farhana Aziz Ahmad Fauzi Ismail Advanced Membrane Technology Research Centre(AMTEC) Universiti Teknologi Malaysia81310 SkudaiJohorMalaysia School of Chemical and Energy Engineering Universiti Teknologi Malaysia81310 SkudaiJohorMalaysia Faculty of Science and Industrial Technology Prince of Songkla UniversitySurat Thani Campus84000 Surat ThaniThailand

The discharge of industrial effluent containing heavy metal ions would cause water pollution if such effluent is not properly *** this work,the performance of emerging nanofiltration(NF)like-forward osmosis(FO)membrane was evaluated for its efficiency to remove copper ion from ***,copper ion is removed from aqueous solution via adsorption and/or ion-exchange *** engineered osmosis method as proposed in this work considered four commercial NF membranes(i.e.,NF90,DK,NDX and PFO)where their separation performances were accessed using synthetic water sample containing 100 mg·L-1 copper ion under FO and pressure retarded osmosis(PRO)*** findings indicated that all membranes could achieve almost complete removal of copper regardless of membrane orientation without applying external driving *** high removal rates were in good agreement with the outcomes of the membranes tested under pressuredriven mode at 1 *** use of appropriate salts as draw solutes enabled the NF membranes to be employed in engineered osmosis process,achieving a relatively low reverse solute *** findings showed that the best performing membrane is PFO membrane in which it achieved N 99.4%copper rejection with very minimum reverse solute flux of<1 g·m-2·h-1.

关键词： Nanofiltration Forward osmosis Copper Divalent salt Water flux

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Immunomolecular response of CD4^(+),CD8^(+),TNF-α and IFN-γ in Myxobolus-infected koi(Cyprinus carpio)treated with probiotics

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Aquaculture and Fisheries 2023年第5期8卷 514-527页

作者： Uun Yanuhar Nico Rahman Caesar nur sakinah Junirahma Rachmat Noer Soelistyoadi Department of Aquatic Resources Management Faculty of Fisheries and Marine SciencesBrawijaya UniversityJalan VeteranMalangEast Java65145Indonesia Doctoral Program of Environment Science Post Graduate ProgramBrawijaya UniversityJalan VeteranMalangEast Java65145Indonesia Fish Quarantine Center for Quality Control and Safety of Fishery Products Surabaya I Ministry of Marine Affairs and FisheriesSurabayaEast Java60115Indonesia

A poor environment increases fish’s susceptibility to myxosporean infection that can cause the death of larval fish,especially for koi fish(Cyprinus carpio).This study aimed to determine the effect of probiotics,local anti-parasitic drugs(kutuklin),and the chemical compound diflubenzuron treatments on the koi immune *** study used PCR with specific primer 18S SSU rDNA and DNA sequencing to detect Myxobulus *** treatments were divided into 5 groups:Treatment(A)(healthy koi without treatment),(B)(infected koi without treatment),(C)(infected koi with 0.55 mL/30 L probiotics),(D)(infected koi with 1μL/g of feed kutuklin),and(E)(infected koi with 0.02 mg/5 L dimilin).Myxospore has observed with Scanning Electron Microscopy(SEM)and 4′,6-diamidino-2-phenylindole(DAPI)fluorescence *** histological analysis using semi-quantitative scoring methods,and flow cytometry was conducted to analyse the immune response of Cluster of differentiation 4(CD4^(+)),Cluster of differentiation 8(CD8^(+)),Tumor Necrosis Factor-alpha(TNF-α),Interferon gamma(IFN-γ)cells in the *** show that the histological analysis indicated edema,hyperplasia,lamella fusion,congestion,and hypertrophy lesions in infected *** with probiotics shows the lowest damage(30.6%).The immune responses of CD4^(+)and CD8^(+)cells to dimilin treatment were 10.54%and 16.86%,*** largest TNF-αand IFN-γresponse were for the kutuklin treatment(29.26%)and probiotics treatment(8.23%).

关键词： Cyprinus carpio Flowcytometry Immune responses Myxobolus koi Probiotic

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Photoelectrochemical evaluation of SILAR-deposited nanoporous BiVO4 photoanodes for solar-driven water splitting

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Nano Materials Science 2020年第3期2卷 227-234页

作者： Siti nur'ain Haji Yassin Adrian Soong Leong Sim James Robert Jennings Faculty of Science Universiti Brunei DarussalamJalan Tungku LinkBE 1410Brunei Darussalam

We report a photoelectrochemical investigation of BiVO4 photoanodes prepared by successive ionic layer adsorption and reaction(SILAR),a facile method that yields uniform nanoporous *** characterization of the phase,morphology,composition,and optical properties of the prepared films,the efficiencies of charge separation(ηsep)and water oxidation(ηox)in solar water splitting cells employing these photoanodes were estimated following a previously reported *** wavelength and illumination direction dependencies were discovered in the derived efficiencies,casting doubt on the validity of the *** alternative approach using a diffusion–reaction model that explicitly considers the efficiency of electron collection resolved the discrepancies and explained the illumination direction dependence of the *** diffusion lengths(Ln)of 0.45μm and 0.55μm were derived for pristine and cobalt phosphate(Co-Pi)modified BiVO4,respectively,which are much shorter than the film thickness of^2.1μ*** Co-Pi treatment also increasedηoxfrom 0.86 to^1,which is the main reason for the overall performance enhancement caused by adding *** findings suggest that there is little scope for improving the performance of SILAR-deposited BiVO4 photoanodes by further catalyzing water oxidation,but enhanced performance is achievable if electron transport can be improved.

关键词： Bismuth vanadate BiVO4 Solar water splitting Electron diffusion length Charge collection efficiency Water oxidation efficiency Charge separation efficiency

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Peat properties of a tropical forest reserve adjacent to a fire-break canal

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Journal of Forestry Research 2024年第1期35卷 155-167页

作者： Dayang nur sakinah Musa Mohd Zahirasri Mohd Tohir Xinyan Huang Luqman Chuah Abdullah Mohamad Syazaruddin Md Said Muhammad Firdaus Sulaiman Safety Engineering Interest Group(SEIG) Department of Chemical and Environmental EngineeringFaculty of EngineeringUniversiti Putra Malaysia43400 UPM SerdangSelangorMalaysia International Tropical Forestry Programme Faculty of Tropical ForestryUniversiti Malaysia SabahSabahMalaysia Department of Land Management Faculty of AgricultureUniversiti Putra MalaysiaSelangorMalaysia Research Centre for Fire Safety Engineering Department of Building Environment and Energy EngineeringThe Hong Kong Polytechnic UniversityHong KongPeople’s Republic of China

Tropical peat comprises decomposed dead plant material and acts like a sponge to absorb water,making it fully ***,drought periods dry it readily and increases its vulnerability to *** fires emit greenhouse gases and particles contributing to haze,and prevention by constructing fire-break canals to reduce fire spread into forest reserves is *** paper aims to determine peat physical and chemical properties near a fire-break canal at different fire frequency *** sampling was conducted at two forest reserves in Malaysia which represent low fire frequency and high fire frequency *** results show that peat properties were not affected by the construction of a fire-break canal,however lignin and cellulose content increased significantly from the distance of the canal in both *** study concluded that fire frequency did not significantly influence peat properties except for *** higher fibre content in the high frequency area did not influence moisture content nor the ability to regain ***,fire frequency might contribute differently to changes in physical and chemical properties,hence management efforts to construct fire-break canals and restoration efforts should protect peatlands from further *** findings will benefit future management and planning for forest reserves.

关键词： Peat fire Peat properties Fire-break canals Forest reserves

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An assessment study of absorption effect:LED vs tungsten halogen lamp for noninvasive glucose detection

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Journal of Innovative Optical Health Sciences 2015年第2期8卷 61-65页

作者： nur ain Mohd Aziz Norhana Arsad P.Susthitha Menon Sahbudin Shaari Zalhan Md Yusof Abdur Rehman Laili Institute of Microengineering and Nanoelectronics(IMEN) Dept.of ElectricalElectronic and System Engineering Faculty of Engineering and Built Environment The National University of MalaysiaBangiSelangor Department of Photonics MIMOS Berhad57000 Technology Park MalaysiaKuala LumpurMalaysia

Noninvasive gluoose monitoring development is critical for diabetic patient continuous ***,almost all the available devices are invasive and *** methods such as using spectroscopy have shown some good ***,the drawback was that the tungsten halogen lamps 1usage that is impractical if applied on human *** paper compared the light emitting diode(LED)to traditional tungsten halogen lamps as light source for glucose detection where the type of light source plays an important role in achieving a good spectrum *** concentration measurement has been developed as part of noninvasive technique using optical *** change and overlapping in tungsten halogen results need to replace it with a more convenient light source such as *** on the result obtained,the performance of LED for absorbance spectrum gives a signifcantly different and is directly proportional to the glucose *** result shows a linear trend and scucssully detects lowest at 60 to 160 mg/dL glucose concentration.

关键词： Tungsten halogen LED glucose rflectance absorbance spectrometer

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Improvement method for cervical cancer detection: A comparative analysis

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Oncology Research 2021年第5期29卷 365-376页

作者： nur ain ALIAS WAN AZANI MUSTAFA MOHD AMINUDIN JAMLOS AHMED ALKHAYYAT KHAIRUL SHAKIR AB RAHMAN RAMI QMALIK Faculty of Electrical Engineering&Technology Universiti Malaysia PerlisUniCITI Alam CampusSungai ChuchuhPadang BesarPerlis02100Malaysia Advanced Computing(AdvCOMP) Centre of ExcellenceUniversiti Malaysia Perlis(UniMAP)Pauh Putra CampusArauPerlis02600Malaysia Faculty of Electronic Engineering&Technology Universiti Malaysia PerlisUniCITI Alam CampusSungai ChuchuhPadang BesarPerlis02100Malaysia Department of Computer Technical Engineering College of Technical EngineeringThe Islamic UniversityNajaf54003Iraq Department of Pathology Hospital Tuanku FauziahKangarPerlis02000Malaysia Medical Instrumentation Techniques Engineering Department Al-Mustaqbal University CollegeBabylonHillah51001Iraq

Cervical cancer is a prevalent and deadly cancer that affects women all over the *** affects about 0.5 million women anually and results in over 0.3 million *** of this cancer was previously done manually,which could result in false positives or *** researchers are still contemplating how to detect cervical cancer automatically and how to evaluate Pap smear ***,this paper has reviewed several detection methods from the previous researches that has been done *** paper reviews pre-processing,detection method framework for nucleus detection,and analysis performance of the method *** are four methods based on a reviewed technique from previous studies that have been running through the experimental procedure using Matlab,and the dataset used is established Herlev *** results show that the highest performance assessment metric values obtain from Method 1:Thresholding and Trace region boundaries in a binary image with the values of precision 1.0,sensitivity 98.77%,speciﬁcity 98.76%,accuracy 98.77%and PSNR 25.74%for a single type of ***,the average values of precision were 0.99,sensitivity 90.71%,speciﬁcity 96.55%,accuracy 92.91%and PSNR 16.22%.The experimental results are then compared to the existing methods from previous *** show that the improvement method is able to detect the nucleus of the cell with higher performance assessment *** the other hand,the majority of current approaches can be used with either a single or a large number of cervical cancer smear *** study might persuade other researchers to recognize the value of some of the existing detection techniques and offer a strong approach for developing and implementing new solutions.

关键词： Cervical cancer Detection Pap smear Images

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The Effects of Stacking Sequence on Dynamic Mechanical Properties and Thermal Degradation of Kenaf/Jute Hybrid Composites

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Journal of Renewable Materials 2021年第1期9卷 73-84页

作者： Tabrej Khan Mohamed Thariq Hameed Sultan Mohammad Jawaid Syafiqah nur Azrie Safri ain Umaira Md Shah Mohd Shukry Abdul Majid Nik Noriman Zulkepli Haliza Jaya Department of Aerospace Engineering Faculty of EngineeringUniversiti Putra MalaysiaSerdang43400Malaysia Laboratory of Biocomposite Technology Institute of Tropical Forestry and Forest ProductsUniversiti Putra MalaysiaSerdang43400Malaysia Aerospace Malaysia Innovation Centre Prime Minister’s DepartmentMIGHT Partnership HubCyberjaya63000Malaysia School of Mechatronic Engineering Universiti Malaysia PerlisPauh Putra CampusArau02600Malaysia School of Manufacturing Engineering Universiti Malaysia PerlisPauh Putra CampusArau02600Malaysia Center of Excellence Geopolymer and Green Technology Faculty of Engineering TechnologyUniversiti Malaysia PerlisArau02600Malaysia

This research focused on the dynamic mechanical and thermal properties of woven mat jute/kenaf/jute(J/K/J)and kenaf/jute/kenaf(K/J/K)hybrid *** mechanical analysis(DMA)and Thermo-gravimetric Analysis(TGA)were used to study the effect of layering sequence on the thermal properties of kenaf/jute hybrid *** DMA results;it was found that the differences in the stacking sequence between the kenaf/jute composites do not affect their storage modulus,loss modulus and damping *** the TGA and DMA results,it has been shown that stacking sequence has given positive effect to the kenaf/jute hybrid composite compared to pure epoxy *** is because kenaf and jute fibre has increased the Tg values of the composites,thus affect the thermal *** showed that the storage modulus for kenaf/jute hybrid composites increased compared with pure epoxy composites with increasing temperature and the values of remained almost the same at glass transition temperature(Tg),the hybrid composite perhaps due to the improved fibre/matrix interface *** preliminary analysis could provide a new direction for the creation of a novel hybrid composite which offers unique properties which cannot be accomplished in a single material system.

关键词： Hybrid composites dynamic mechanical thermal analysis(DMTA) thermo-gravimetric analysis

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Redefining biofuels:Investigating oil palm biomass as a promising cellulose feedstock for nitrocellulose-based propellant production

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Defence Technology（防务技术） 2024年第7期37卷 111-132页

作者： Khoirul Solehah binti Abdul Rahim Alinda binti Samsuri Siti Hasnawati binti Jamal Siti Aminah binti Mohd Nor Siti Nor ain binti Rusly Hafizah binti Ariff nur Shazwani binti Abdul Latif Centre for Tropicalization(CENTROP) Defence Research InstituteUniversiti Pertahanan Nasional MalaysiaKem Sungai Besi57000 Kuala LumpurMalaysia Department of Chemistry and Biology Centre for Defence Foundation StudiesUniversiti Pertahanan Nasional MalaysiaKem Sungai Besi57000 Kuala LumpurMalaysia

This review paper explores the potential of oil palm biomass as a valuable cellulose source for the production of nitrocellulose-based propellants,contributing to the green revolution and sustainable energy *** highlights the availability of the corresponding biomass in Malaysia and in line with global studies,the chemical compositions,as well as a brief description of current technologies for converting biomass of oil palm into value added products specifically *** to achieve maximum utilization of biomass from oil palm industry for cellulose production and prospective source for nitrocellulose-based propellant are also *** methodology section outlines the pretreatment of lignocellulosic fibres,cellulose extraction,and nitrocellulose production ***,the review underscores the prospective of palm oil biomass as a sustainable cellulose source for propellant manufacturing,while acknowledging the need for further research and advancements in the field.

关键词： Biopolymer Cellulose nitrate Energetic materials Green technology Palm oil

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