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Available Soil Micronutrients Status of Nashik and Kolhapur Districts of Maharashtra using Inductively Coupled Plasma-Optical Emission Spectroscopy
(Journal of Applicable Chemistry, 2017) Barhate, Vasant; Magodia, Heena; Navale, Dinesh; Gawade, Satyavikas; Kale, Archana
A study was conducted to quantify the extent of micronutrient deficiency in soils of Nashik and Kolhapur districts of Maharashtra (India). Surface soil samples were collected from farmer’s fields representing 25 villages from selected two taluka’s of Nashik and Kolhapur district of Maharashtra state following sampling procedure of multistage statistical approach. The processed soil samples were analyzed for AB-DTPA extractable Cu, Zn, Mn and Fe using ICP-OES instrument. The result showed that mean value of AB-DTPA Cu, Fe, Mn and Zn were 1.14, 7.68, 3.83 and 2.18 mg/kg, respectively for Nashik district. Similarly, an average value of 1.15, 11.63, 4.10 and 1.54 mg/kg for ABDTPA Cu, Fe, Mn and Zn, respectively were observed for Kolhapur district. The data also revealed that all the soil samples analysed for the mean AB-DTPA extractable Cu were well above the critical limits (>0.2 mg/kg) for both Nashik and Kolhapur district. The AB-DTPA extractable micronutrients were relatively higher in soils of slightly acidic to neutral pH than the soils of near neutral to slightly alkaline pH, indicating the plant available micronutrients were more in acidic soils. The results of the studies have potential practical use in determining site-specific nutrient management practices for sustainable crop production, improving nutrient use efficiency, reducing cost of cultivation, and preventing environmental pollution.
Determination of Wada Constant, Rao’s Constant, Compressibility and viscosity of a Cholesteric Liquid Crystal Solution at Various Temperatures
(International Journal of Engineering Research & Technology, 2014) Kanwar, Anita; Mhatre, Pritee
The ultrasonic waves having different frequencies propagate through the liquid crystal solution with different velocities at various temperatures. This fact helps in studying physical and chemical properties of Cholesteric liquid crystal (CLC) of different concentration at various temperatures. We in our laboratory have found out Acoustic Impedance, Rao’s constant, Adiabatic Compressibility, Wada constant, Van der Waals’ constant, Free Volume, Internal pressure and Classical Absorption Co-efficientof CLC solutionof different concentration. The measurements were made at various temperatures using Ultrasonic interferometer working at the frequencies 3MHz and 5MHz. The results so obtained are analyzed to see the effect temperature, concentration and transition of CLC into various mesophases. It is observed that when the miscibility is high and the solution is highly homogeneous the values of the parameters change drastically showing the change in the mesophases at phase transition temperatures.
Different brewing methods of tea infusions of Curcuma Longa-Comparative Phytochemical Analysis
(2020) Jagasia, Pooja V.
Plants having medicinal value would be the best source to attain an expansion of drugs. Turmeric has been historically used in Asian nations as a clinical herb because of its antioxidant, anti-inflammatory, antimicrobial and anticancer properties. The objective of the present work was to assess the antioxidant activityt of turmeric(Curcuma longa) . Different techniques were used for turmeric tea infusions by the use of distilled water as a solvent. Four types of infusions soft infusion ,Hard infusion, ambient infusion and cold infusion had been analyzed for phytochemicals such as with Flavonoids, Tannins, Saponins, Proteins, Alkaloids, Steroids, Phenols, Terpenoid, Glycoside ,Reducing sugars, Resins, Balsams , Anthraquinones, Chalcone, Pholobatannis, Anthocyanins, Coumarin ,Emodin. Cold infusion confirmed the lowest antioxidant activity, while ambient infusion showed moderate whereas soft and hard infusions indicated highest antioxidant activity. Flavonoid content was estimated quantitatively in hard,soft and ambient infusions with Folin -Ciocalteu assay and by proposed method using boric acid . Hard infusion showed maximum amount of Flavoniods. Total flavonoid content in the hard extract was observed to be 8.79±0.08as quercetin equivalents. Antimicrobial activity of the extracts against selected microorganisms was also investigated .
Eco-Friendly One Pot Synthesis of Coumarin Derivatives by Pechmann Condensation using Tamarind Juice as a Biocatalyst
(International Journal of Innovative Science and Research Technology, 2023) Navale, Dinesh; Ranade, Prasanna; Zote, Santosh; Kulal, Dnyaneshwar; Wagh, Swapnil
An efficient and eco-friendly synthetic method has been established for synthesis of 7-hydroxy-4-methyl coumarin and its derivatives using tamarind juice as a biocatalyst. The condensation reaction of Substituted phenol with ethyl acetoacetate (EAA) successfully carried out using tamarind juice as a green and efficient catalyst at 90°C in aqueous condition. This green biocatalyst has been utilised effectively for pechmann reaction with good yield of product, easy workup and eco-friendly reaction conditions.
Effect of Temperature and Concentration on the Physical Properties of Cholesteryl Pelargonate Near Transition Temperatures
(Journal of Scientific Research, 2021) Gajghate, Vishakha; Kanwar, Anita
Thermodynamic and acoustical study of cholesteric liquid crystal (CLC) was carried out near phase transition temperatures using an ultrasonic interferometer. The study of ultrasonic waves and related thermo-acoustical parameters provides information in understanding the nature of molecular interactions associated with liquid crystals. A statistical mechanical approach is used to calculate the viscosity of samples. The characteristic textures and phase transition temperatures are obtained with Polarizing Microscopy (POM). Fabry Perot scattering studies (FPSS) are used to ascertain the phase transition temperatures of CLC. The thermo-acoustical parameters have been calculated using experimental data with well-known formulae. The acoustical parameters show variation with temperature as well as with concentration of CLC. Anomalous behavior of these parameters is noticed at the clearing temperature of CLC. The variation of the parameters is explained in terms of solute-solvent molecular interactions in the solution. The molecular behavior, structural changes, and intermolecular interactions between CLC and solvent are discussed in detail.
Psychrotrophic yeast Yarrowia lipolytica NCYC 789 mediates the synthesis of antimicrobial silver nanoparticles via cell-associated melanin
(Springers, 2013) Apte, Mugdha; Sambre, Devashree; Gaikawad, Shital; Joshi, Swanand; Bankar, Ashok; Kumar, Ameeta Ravi; Zinjarde, Smita
A psychrotrophic marine strain of the ascomycetous yeast Yarrowia lipolytica (NCYC 789) synthesized silver nanoparticles (AgNPs) in a cell-associated manner. These nanostructures were characterized by UV-Visible spectroscopy and scanning electron microscope-energy dispersive spectrometer (SEM-EDS) analysis. The brown pigment (melanin) involved in metal-interactions was obtained from the cells. This extracted pigment also mediated the synthesis of silver nanoparticles that were characterized by a variety of analytical techniques. The melanin-derived nanoparticles displayed antibiofilm activity. This paper thus reports the synthesis of AgNPs by the biotechnologically important yeast Y. lipolytica; proposes a possible mechanism involved in the synthetic process and describes the use of the bio-inspired nanoparticles as antibiofilm agents.
Psychrotrophic yeast Yarrowia lipolytica NCYC 789 mediates the synthesis of antimicrobial silver nanoparticles via cell-associated melanin
(Springers, 2013) Apte, Mugdha
A psychrotrophic marine strain of the ascomycetous yeast Yarrowia lipolytica (NCYC 789) synthesized silver nanoparticles (AgNPs) in a cell-associated manner. These nanostructures were characterized by UV-Visible spectroscopy and scanning electron microscope-energy dispersive spectrometer (SEM-EDS) analysis. The brown pigment (melanin) involved in metal-interactions was obtained from the cells. This extracted pigment also mediated the synthesis of silver nanoparticles that were characterized by a variety of analytical techniques. The melanin-derived nanoparticles displayed antibiofilm activity. This paper thus reports the synthesis of AgNPs by the biotechnologically important yeast Y. lipolytica; proposes a possible mechanism involved in the synthetic process and describes the use of the bio-inspired nanoparticles as antibiofilm agents.
Student satisfaction survey
(Springers, 2022) Kanwar, Anita; Sanjeeva, Meghana
India has witnessed a rapid expansion in the higher education institutions and with this fast pace of growth day by day, competition has set in among the institutes. Before taking admission in an institution student assess the facilities and standard of the institution by referring to the website, other admission portals and by taking peer opinion and public perception. Educational institutions around the world are now requesting students’ feedback on all elements of academic life in the form of a satisfaction feedback questionnaire. The goal of this research is to describe the development and implementation of a survey to assess undergraduate and postgraduate student satisfaction. The Student Satisfaction Survey is a useful and effective instrument that tries to focus resources on areas, where there is low satisfaction but high importance. This paper gives detailed information about the methodology, calculation and outcome of the exercise utilizing Likert scale analysis. With the recent emerging trends, this innovative method offers flexibility to integrate more parameters, group certain parameters to get feedback on a particular issue and transmute the type of questions with changing environment and structure. The analysis is done using a statistical method. The survey result directly highlights the importance and flexibility of method to evaluate overall satisfaction, satisfaction cognate to a single parameter and satisfaction for questions grouped together underlining some paramount aspects of higher education.
Study of Water Pollution in Teen Talav, Ashish Talav and Wamanwadi Well in Chembur, South Mumbai Region of Mumbai District
(Journal of Applicable Chemistry, 2018) Navale, Dinesh; Nalawade, Vighnesh; Ranade, Prasanna; Barhate, Vasant
Chembur is the south Mumbai region of Mumbai district of the Maharashtra state of India. In this area big industries like RCF, BPCL, HPLC, and Aegis are located. In addition to this many leather processing, steel processing, food processing and small textile industries are well established in this area. There are many lakes and Wells. The drain water coming from this industry directly discharges to the lakes as well as it enters in well through soil percolation. Water of these sources normally uses for laundry and cleaning purposes, therefore it is necessary to measure the water quality of this source. In the said research project physical parameter like pH, Color, Odor, Turbidity and Chemical parameters like acidity/alkalinity hardness COD, BOD and TDS were studied and the result obtained compared with critical limits.
Temperature and Concentration dependence of Refractive Index of Cholesteric Liquid Crystal Solution
(Physical Chemistry: An Indian Journal, 2012) Kanwar, Anita; Yadav, Priya
Average refractive indices of Cholesteric liquid crystal (Cholesteryl pelargonate: CP) dissolved in a soluble solvent were measured at various temperatures and concentrations. Multi-wavelength (visible range) refractometer made using hollow prism is used in the measurement. Due to variation in extra-ordinary and ordinary refractive index average refractive index changes with temperature for various concentrations of the solution. The changes in average refractive index were investigated for three wavelengths: 404 nm, 546 nm and 578 nm. Results so obtained are pre- sented in this paper and are in accordance with claim by Hecht in his book.

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