Journal of Advanced Applied Scientific Research (JOAASR)
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Dissolution studies in few urinary type crystals
Get PDFKidney stones are hard, solid particles that form in the urinary tract. The stones were very small and can pass out of the body without any problems. Calcium containing stone, especially Calcium Oxalate Monohydrate, Calcium Oxalate Di- hydrate and basic Calcium Phosphate, Calcium Hydrogen Phosphate Di-hydrate, Struvite and are the most commonly occurring stones. Calcium Oxalate Monohydrate crystals are grown in single diffusion gel growth technique. The grown crystals are characterized by FTIR, XRD and inhibition studies. A number of medicinal plants were antiurolithiatic activity such as Tribulus terrestriis and Boerhaavia diffusa Linn were carried out. Calcium Oxalate Monohydrate crystals in the presence of the herbal extract of one of the medicinal plants Tribulus terrestris Linn. The results are discussed
Essential oil loaded electrospun membrane - A potential sprout supressant
Get PDFQuality of the potato tubers during storage could be retained by efficient sprout controlling. Recently it has become important to use natural anti-sprouting agents such as essential oils (EO) as well as pure compounds derived from essential oils. Therefore, in the present work we have attempted to explore the anti-sprouting efficiency of peppermint essential oil (Peppermint EO) loaded Polyurethane (PU)/ Polymethylmethacrylate (PMMA) ultra-thin fibrous mats during the post harvest storage of potato tubers. PU/PMMA blend fibers were produced by electrospinning technique. The electrospun fiber mats were loaded with 2 wt% peppermint essential oil. Essential oil loaded and unloaded fibers were characterised for its chemical composition, surface morphology and controlled release of Peppermint EO using Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM), and UV-Vis spectrophotometer. The SEM results revealed the change in fiber diameter before and after loading. In-vitro release of Peppermint EO in ethanol was approximately found to be 84.8%. Storage life of potato tubers in the presence of peppermint oil was assessed. Storage life study concluded that tubers stored with peppermint EO loaded fibers showed no sprout development for 30 days due to controlled release of EO whereas the tubers with unloaded mats sprouted in 10 days. Thus, the fabricated peppermint EO loaded PU/PMMA fibrous membrane having an excellent anti-sprouting property would be a potential candidate for the post harvest storage of potatoes
Synthesis, Growth and Characterization of semi-organic non-linear optical Triglycine phosphoric acid (TGPA) single crystals
Get PDFSingle crystals of Tri glycine phosphoric acid (TGPA) a semi organic non-linear optical material, has been grown from solution by slow evaporation method at room temperature. The title compound was synthesized and purified by repeated recrystallization process. The growth of crystals was confirmed at pH 2.8. The crystals were characterized by single crystal X-ray diffraction and Fourier transform Infrared Spectroscopic (FTIR) analysis. The formation of TGPA crystal was confirmed by powder XRD analysis. The range and percentage of optical transmission was ascertained by recording UV-vis-NIR spectrum. The second harmonic generation behaviour of TGPA crystal was tested by Kurtz-Perry powder technique and its mechanical hardness was estimated by Vickers microhardness method
Synthesis, Characterization, and Biological Evaluation of Some 3d-Metal Complexes of Schiff Base Derived from Sulfonamide Drug
Get PDFA sulfonamide based novel acyclic bidentate compartmental ligand E-4-(((1H-indol-3-yl)methylene)amino)-N-(pyridine-2-yl) benzenesulfonamide was prepared by condensation of Indole-3-carbaldehyde with sulphapyridine in equimolar ratio in ethanol. The reaction of metal chlorides (Mn(II), Co(II), and Cu(II) with the newly synthesised ligand in methanol results the formation of deep colored metal complexes with the formula [ML2]Cl2 (M=Mn, Co, and Cu). The free ligand and its metal complexes were characterized by elemental analyses, conductometric measurements, IR, UV-Vis,1H and 13CNMR and EI Mass spectrometric techniques. The physical measurements and FTIR spectral data showed that most of the complexes contain octahedrally coordinated to the central ion (II). The antibacterial activity of the ligand and its complexes was done by well diffusion method using DMSO as inert solvent and the test solution was diffused into the plate and affected the growth of the incubated microorganisms such as staphylococcus aureus, E.coli, Bacillus, Aspergillus niger. The values of zone ofinhibition were found out at 37 ºC for a period of 24 h. It has beenfound that all the complexes have higher activity than the free ligandand the standard
Extractive spectrophotometric determination of Iron(III) using 2, 6-dithiol-4-methylphenol and aminophenols
Get PDF2,6-dithiol-4-methylphenol(DTMP) as a photometric reagent for the extractive spectrophotometric determination of iron(III) is presented in this paper. The reagent DTMP in the presence of aminophenols (AP) gave instantaneous and stable red colour with iron(III) in the pH range 4.2 to 5.3. The Beer’s law was applicable in the range of 0.4 – 20 μg/ml at 550-556 nm. The limit of detection (LOD) is found to be 9.3-9.7 ng/mL. The stoichiometry of the complex is established as 1:2:2 (Fe: DTMP: AP) by equilibrium shift, relative yield, Asmus straight line and the intersection curves method. The standard deviation and the coefficient of variance are presented. The proposed method has been successfully applied for determination of Fe(III) in pharmaceutical, food and in plant samples are presented
Influence of potassium dichromate-Zn2+ system on corrosion inhibition of rebar steel in simulated concrete pore solution
Get PDFThe inhibition efficiency (IE) of Potassium dichromate - Zn2+ system in controlling corrosion of rebar steel in Simulated Concrete Pore Solution (SCPS) prepared in well water in the absence and presence of Zn2+ has been investigated by mass loss study. It can be seen from the data obtained that formulation consisting of 250 ppm of K2Cr2O7 and 50 ppm of Zn2+ provides 98 % of inhibition efficiency. Inhibition was found to increases with an increasing concentration of Zn2+. Polarization study confirms the formation of inhibitor film formed on the rebar steel surface. The nature of the protective film formed on the rebar steel surface was examined by UV-Visible, FTIR, CV, SEM, Edx and AFM spectral studies. The results obtained shows that the K2Cr2O7 could serve as an effective inhibitor for the corrosion of rebar steel in simulated concrete pore solution
Spectroscopic investigation complex formation of tungsten with 2, 6-dithiol-4-methylphenol in the presence of aminophenols
Get PDFThe mixed-ligand complexes of tungsten (VI) with 2, 6-dithiol-4-methylphenol (DTMP) in the presence of hydrophobic amines have been investigated by spectrophotometric method. The condition of complexing and extraction, physical-chemical and analytical characteristics of this complex have been found. From aminophenols 2(N, N-dimethylaminomethyl)-4-methylphenol (АP1), 2(N,N-dimethylaminomethyl)-4-chlorphenol (АP2) and 2(N, N-dimethylaminomethyl)-4-bromphenol (АP3), were used.. It has been found that mixed-ligand complex were formed in weakly acidic medium (pH 3.9 – 5.2). Maksimum of light absorption observed at 476-480 nm. The calculated molar absorptivities (emax) belong to the interval (2.73-2.92)×104. The extraction-photometric methods of tungsten determination have been worked out. The influence of diverse ions on determination of tungsten has been studied. The proposed methods have been successfully applied to determination of tungsten in steel, soil and plant samples
An overview on properties and usage of nanostructured materials in the food sector
Get PDFThe population growth causes an increasing pressure on food sector so that the problem of malnutrition is a further concern in the today’s world. Nanotechnology is one of the new emergent technologies of the present century that would largely influence the world future. Convergence of nanotechnology and food science may lead to emerging abundant potentialities; thus, it is particularly paid attention in the new century. Nanomaterials provides a wide range of applications in producing, storing, packaging, bioavailability, and conductivity of nutrients. On the other hand, scholars and food producers industry mainly concern for the effect of using nanomaterials on the food safety due to unknown features and effects of nanomaterials. Regarding the wonderful potential of applying nanotechnology, a great revolution will be expected in this area. In this review, benefits and health risks of nanomaterial in nutrition and food sciences are highlighted
Prediction of protein subcellular localization of human protein using j48, random forest and best first tree techniques
No full textFunctional explication of unascertained proteins is a remarkable achievement in proteomics. Proteins subcellular localization serves as the key annotation. Many prediction techniques were developed emphasizing on an individual biological point or speculating a subset of all localizations. Emulating the protein localization that is studied pivotal is carried out by gathering all the necessary biological relevant information and addressing the necessity of improving the prediction accuracy. Proteins carry an obligatory role in a wide range of bioprocess such as catalysis of biochemical reaction, signal transduction and are requisite for cellular processes. They execute the associated functions could be analyzed by predicting their associated cellular locations. The colonization of the proteins could be scrutinized by considering the features of primary sequence of protein such as physiochemical and amino acid composition of the complete protein. The C-terminal and N-terminal physiochemical composition and other physicochemical properties of the primary sequence also contribute for the subcellular localization. In this paper, the computational technique, J48, best first decision tree, random forest are employed for the localization prediction has shown significant performance over several other techniques. The integrated latest database are trained with obsolete data and three techniques were employed for studying the subcellular localization which documents the increase in the accuracy of the prediction, by 87.711 % with J48, 81.67% with random forest, and 88.125% with BF Tree based on the features discussed by comparing our techniques over others
Tridax-Procumbens Extraction Impregnated Chitosan Film: Preparation Characterisation and Application
Get PDFChitosan and it’s derivatives has varity of advantages likes in industrial and biomedical fields. In recent years,research has been focused on biodegradable films of natural polymers like chitosan,starch,cellulose and etc. Such polymers may be proteins of plant and biological materials. Natural biopolymeric films with tridaxprocumben have potential advantage over the synthetic products since they are totally biodegradable from biological materials. Tridaxprocumbens extract is used for wounds healing as anticoagulant, antifungal and insect repellen. It is well known for application to treat infection and skin diseases in folk medicines,etc. The present study was focused on impregnation of tridax-procumbens extract into chitosan to develop a antimicrobial films. Further, they assessed was for physicochemical properties through x-ray diffraction and flourier transform infrared(FTIR) spectroscopy studies and antimicrobial activity