Research List

No.	Researcher	Title	Abstract	Year
1031	yint Myint Than	STUDY ON SORPTION PROPERTIES OF ACTIVATED BIOSORBENTS (FISHSCALE AND SEASHELL) FOR THE REMOVAL OF ANIONIC SURFACTANT	In this study, waste fishscale and seashell were used as biosorbents for the removal of surfactants from industrial wastewater. These biosorbents were collected from fish market in Pathein Township, Ayeyarwady Region. The selected samples were washed with distilled water for three times and were soaked in 3 % nitric acid for 24 h and then were washed again with distilled water until pH 7 and dried in an oven at 105?C and were made to powder form. The physiocochemical properties such as moisture content, bulk density and pH of raw fishscale powder (RFSP) and raw seashell powder (RSSP) were determined by conventional methods and characterized by modern techniques such as EDXRF, SEM, TG-DTA and FT IR analyses. RFSP and RSSP were calcined at various temperatures (400?C to 1000 ?C) to obtain heat activated fishscale powder 1-7 (HAFSP 1-7) and heat activated seashell powder 1-7 (HASSP 1-7). The critical micelle concentration (CMC) of sodium dodecyl sulphate (SDS) were obtained as 7x10-3 M, 7x10-3 M, 7x10-3 M, 4x10-3 M, 6x10-3 M and 5x10-3 M at pH 1, 2, 3, 4, 5 and 6 respectively. From these results, 7x10-3 M at pH 3 and 5x10-3 M at pH 6 were selected as optima CMC of SDS. The adsorption properties of different biosorbents (HAFSP-1, 2, 3, 4, 5, 6 and 7) and (HASSP-1, 2, 3, 4, 5, 6 and 7) were compared for the removal of SDS at pH 3 and 6. According to these analyses, HAFSP-5 and HASSP-7 were found to be more effective than other samples. Adsorption capacities of HAFSP-5 and HASSP-7 were determined at different contact time and pH by using UV-Vis spectrophotometer at ?max 498 nm and 25?C. The optimum contact time was 60 min and pH were 3 and 6 respectively for the removal of SDS solution from the paper industrial wastewater by HAFSP-5 and HASSP-7. The outcome of the present research is the preparation of waste biosorbents for the removal of anionic surfactants from the paper industrial wastewater.	2020
1032	Tin Tin Sein	STUDY ON THE BACTERIOLOGICAL EXAMINATIONS OF PREPARED EFFECTIVE MICROORGANISM SOLUTIONS FROM NATURAL WASTES (VEGETABLE WASTES , COW DUNG AND SESAME MEAL CAKE)	In this research, EM (effective microorganism) solutions were prepared from waste of the vegetables by primary fermentation. The cow dung and commercial sesame meal cake were also applied. The preparation of EM solutions were carried out under two different conditions such as condition C1 (vegetable waste) and condition C2 (vegetable waste, cow dung and sesame meal cake) at different pH values. pH values of used solvent / solutions were 6.5 for purified water, 9.5 for slaked lime solution and 2.5 for lemon juice. During the fermentation, biogas was evolved. The volume of evolved gas were measured hourly till to five days. The microorganisms in EM solutions were isolated, cultured and characterized by cultural and microscopic morphology at department of biotechnology, Mandalay Technological University.	2020
1033	Thandar	REMOVAL OF SOME HEAVY METALS FROM INDUSTRIAL WASTEWATER BY USING DRY BIOMASS OF HYDRILLA VERTICILLITA (L. F.) ROYLE	The aim of this research work is to reduce the concentration of Cd2+, Cr3+ and Pb2+ ions in three industrial wastewater samples from dry cell battery factory, nickel plating factory and leather factory in industrial zones I and II, Mandalay Region, Myanmar. The aquatic plant namely Hydrilla verticillata (L. F.) Royle (Mhaw Gyan) was used as dry biomass for the removal of heavy metal ions from three industrial wastewater samples within the optimum experimental conditions. The sorption parameters (optimum contact time and loading weight) were determined using Langmuir isotherm. According to the results, the experimental data for sorption of Cd2+ and Cr3+ ions were fitted to the Langmuir model except Pb2+. The optimum contact time and optimum loading weight were used for the removal of selected metal ions from three industrial wastewater samples. The result revealed that the removal order of metal ions from three industrial wastewater samples using dry biomass was found to be Cd2+ > Cr3+ > Pb2+ .	2020
1034	Thi Yu Mar	ACUTE TOXICITY OF THE ETHANOLIC PLANT EXTRACT AND STRUCTURE ELUCIDATION OF ISOLATED BIOACTIVE COMPOUND FROM THE STEM BARK OF PROTIUM SERRATUM (WALL.EX COLEBR.) ENGL.	In this research work, one of Myanmar traditional medicinal plants, Protium serratum (Wall.ex Colebr.) Engl., Myanmar named Gati was selected for chemical analysis and pharmacological investigation. The stem bark of the selected plant was collected from Pyin Oo Lwin Township, Mandalay Region. Acute toxicity test of 95% ethanolic extract of the stem bark of the selected plant was examined by Organization of Economic Cooperation and Development (OECD) guideline 425. According to acute oral toxicity test of ethanolic extract of the stem bark of this plant, the test substance can be considered relatively safe to the dose level of 5000 mg/kg body weight. Furthermore, the bioactive compound was isolated from ethyl acetate portion serratum (Wall.ex Colebr.) Engl. by thin layer and column chromatographic method. The yield percent of this pure compound was found to be 1.21 based upon the ethyl acetate crude extract. The molecular formula of this isolated flavonoid compound was determined as C15H14O6 by using some spectroscopic techniques, such as FT IR, 1HNMR, 13CNMR, DEPT, HSQC and DART-Mass spectrometry. The structure of this compound was elucidated by using DQF-COSY, 1HNMR splitting patterns, coupling constant (J values) and HMBC spectroscopic data. IUPAC name of the isolated compound is C2(S), C3(R)-2-(3'-4'-dihydroxyphenyl)- 3,4,-dihydro-2H-chromene-3,5,7-triol.	2020
1035	Khin Moh Moh Hlaing	PREPARATION OF FLUORINE DOPED NANOCRYSTALLINE TIN OXIDE THIN FILM	The increasing demand for energy that human beings are faced with the photovoltaic (PV) technology which converts solar radiation into electricity has undergone increasable development. Fluorine doped Tin oxide (FTO) thin film is widely used in various fields of electronic devices such as window layer in solar cell, substrates for electrode deposition and transparent contact in optoelectronic and so on. In this work, nanocomposites of FTO thin film was fabricated by sol-gel dip coating method and then it was applied as dye sensitized solar cell (DSSC) component. The effect of concentration of precursor solution, annealed temperature and heating time in the growth of FTO on glass substrates were studied and discussed. The prepared FTO thin film was analyst by FT IR. The surface morphology of FTO thin films was studied using Scanning Electron Microscope (SEM) to identify the distribution of grain and the growths of nanostructure with prefer orientation. The electrical properties of sample were analyzed by using four-point probe methods. The optical property was studied using UV-Vis spectrophotometer. The structural investigation of as-prepared film was performed using X-ray diffraction (XRD). The minimum value of sheet resistance was found to be 1.02 ? sp-1 for the prepared SnO2:F film at annealed temperature 400�C. The X-ray analysis confirmed the polycrystalline nature of FTO film with preferential orientation along 110 plane. The method was found to be economic and suitable for research and development. The prepared FTO was applied as an electrode in the dye sensitized solar cell (DSSC) electrode application and the photovoltaic effect was observed.	2020
1036	Su Su Kyi	ISOLATION AND OPTIMIZATION OF SOME FERMENTATION PARAMETERS OF THE SELECTED SOIL FUNGUS (SK-6) FROM PYAWBWE TOWNSHIP, MANDALAY REGION	Six different soil samples were collected from six different places in Pyawbwe Township, Mandalay Region. Thirty different soil fungi SK-1 to SK-30 were isolated from six different soil samples. Isolation of fungi SK-1 to SK-30 were undertaken by serial dilution method. The isolated fungi were cultured on Blakeslee�s Malt Extract Agar (BMEA), Czapek Dox Agar (CZA), Malt Extract Agar (MEA) and Potato Glucose Agar (PGA) media. Antimicrobial activity of isolated fungal strains was evaluated by using the agar well diffusion method with seven test organisms. Among them, three fungal strains SK-1, SK-3 and SK-6 showed the antimicrobial activity against Bacillus subtilis and Candida albicans at 7 days. Especially, SK-6 gave the best antifungal activity against Candida albicans. Therefore, SK-6 was selected and the optimum conditions for antimicrobial metabolite production on Candida albicans of SK-6 were the fermentation period, suitable age and size of inoculum, different carbon and nitrogen sources.	2020
1037	Hla Thidar Aung	EVALUATION OF RADICAL SCAVENGING ACTIVITY AND AFLATOXINS IN TUMERIC POWDER BY HIGH PERFORMANCE LIQUID CHROMATOGRAPHY	Tumeric (Curcuma longa) has been known to use in Myanmar traditional medicine system in connection with antioxidant, antimicrobial, anticancer and antibacterial activities and therefore locally grown tumeric (Curcuma longa) has been chosen for this study. It is widely used in the world for many purposes and it is also one of the exports of Myanmar. But some turmeric contains aflatoxin and it causes main barrier of earning foreign currencies. Aflatoxin-toxic carcinogenic secondary metabolities are produced by Aspergillus flavus, Apergillus parasititicus and Aspergillus nomius species of fungi. Thus the detection of aflatoxins concentration in food and feeds are very important. High Performance Liquid Chromatographic method was developed and validated according to the protocol on validation of analytical procedures. Analysis of tumeric samples was carried out for aflatoxin B1, B 2, G1 and G2 by HPLC method. Evaluation of radical scavenging activity was detected by DPPH method while contract extraction of aflatoxin was done as per AOAC method with screening by TLC and quantification by HPLC using reference standards. Thus the proposed method is simple, rapid and specific and was successfully employed for quality and quantity monitoring of aflatoxin content in tumeric.	2020
1038	Lett Lett Thein Tun	SCREENING ON ANTIAGGREGATORY ACTIVITY OF TWO ISOLATED FLAVONOIDS FROM RHIZOMES OF KAEMPFERIA PARVIFLORA WALL. (BLACK GINGER)	This paper focused on the health aspects of flavonoids for humans. Among natural compounds, present in everyday diet, flavonoids have shown beneficial effects in prevention of cardiovascular diseases which can be attributed, at least partially to the described antiaggregatory activity i.e. antiplatelet effects of flavonoids. The rhizomes of black ginger were collected from Lashio Township, Northern Shan State and identified by authorized botanist at Botany Department, University of Yangon. Preliminary phytochemical tests were carried out by test tube methods. According to the results, it was found that ?-amino acids, flavonoids, glycosides, organic acids, phenolic compounds, starch and terpenoids were found to be present. However, alkaloids, carbohydrates, cyanogenic glycosides, reducing sugars and tannins were not detected. 1.78% of PE, 1.92 % EtOAc, 2.50 % EtOH, 2.87 % MeOH and 4.30 % H2O crude extracts were prepared by successive Soxhlet extraction method. Silica gel column chromatographic separation of pet-ether extract from rhizomes of black ginger yielded 0.057% of 5-hydroxy -3,7-dimethoxy flavone (m.pt = 149-150 �C, yellow needles) and 0.035% of 5-hydroxy-3,7,4'-trimethoxy flavone (m.pt = 144- 146 �C, yellow needles). The isolated compounds were firstly characterized by their physicochemical properties such as Rf values, melting points, solubilities and some colour tests. The isolated compounds were also identified by using modern spectroscopic techniques such as UV-visible, FT-IR, 1HNMR, 13CNMR and 2DNMR spectroscopy. Black ginger contains polymethoxy flavones which are flavonoids that exhibit various bioactivities. Among these, in vitro aggregatory activity such as platelet-agglutination, platelet-aggregation and clot retraction were investigated by using Ackroyd's method. It was observed that the isolated compounds possessed antiaggregatory activity.	2020
1039	Sandar Myint	BIOSYNTHESIS OF ZINC OXIDE NANOPARTICLES USING FRUITS AND LEAVES EXTRACTS OF TERMINALIA CHEBULA RETZ.	Green synthesis of metal oxide nanoparticles using plant extract is a promising alternative to traditional method of chemical synthesis. The biosynthesis of zinc oxide nanoparticles using fruits and leaves extracts of Terminalia chebula Retz. has been reported in this study. It is simple, costeffective, rapid and eco-friendly way to synthesize zinc oxide nanoparticles? The ZnO nanoparticles were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet-visible (UV-Vis) and Fourier transform infra-red (FT IR). The structure of ZnO nanoparticles was indexed as hexagonal structure. The crystallite sizes of ZnO nanoparticles from fruits and leaves extracts of T? chebula were calculated by Scherrer formula as 17?0 nm and 23.4 nm? respectively? Morphology of nanocrystals was observed to be aggregated spherical particles? UV absorption spectra of ZnO nanoparticles using fruits and leaves extracts of T? chebula indicated the absorption maxima at 376 and 375 nm, respectively? This new eco-friendly approach of synthesis is a novel, cheap, and convenient technique suitable for large scale commercial production?	2020
1040	Nwe Ni Win	STUDY ON THE ADSORPTION OF CARBON DIOXIDE USING CARBON- ZEOLITE COMPOSITE	Nowadays, carbon dioxide is produced extensively by using many industrial processes and domestic processes. The greatest physiological effect of carbon dioxide is to stimulate the respiratory center, able to cause dilation and constriction of blood vessels and formed the environmental impact. In this paper, composite carbon-zeolite sorbent was prepared and utilized to study the adsorption of carbon dioxide. The adsorption of carbon dioxide on carbon-zeolite composite was measured by using volumetric method. The adsorption capacity was studied by using Langmuir equation, Freundlich equation and Temkin equation. The comparison of these results with that of zeolite molecular sieve was also presented. It was observed that very high carbon dioxide uptake was observed with composite during gas adsorption studies.	2020

Research Publications

Myanmar Academy of Art & Science List of Research