Development of Environmental friendly method or green chemistry synthesis of metallic nanoparticles has been gaining attraction of researchers in all over the world. In this present investigation silver nanoparticles were synthesized from aqueous silver nitrate solution through a simple and eco-friendly method using leaf extract of Ocimum sanctum. The developed silver nanoparticles were characterized by using UV-Vis spectrophotometer, Transmission electron microscopy (TEM), Scanning  electron microscopy (SEM), and Fourier transform infra-red (FTIR) spectroscopy. Stability of developed nanoparticles was analyzed using UV Visible spectra shown that the absorption peak was found at 423 nm and their antimicrobial activity was screened against microbial culture. For antibacterial studies Escherichia coli and Staphylococcus aureus were used and it was found that the synthesized silver nanoparticles have potential applications in antibacterial activity.

In this investigation, the corrosion inhibitive performance of expired Ceftin drug was examined under the standard condition in the 5 % HCl solution at 333 K for the mild steel. The corrosion inhibition property was studied by weight loss (gravimetric) and atomic absorption spectroscopy (AAS) techniques. Weight loss technique shows that, the corrosion inhibition property of expired Ceftin drug is a concentration and time (exposure period) dependent mode. Results of AAS fully support the weight loss results. The investigated expired Ceftin drug can solve the mild steel dissolution problem in several industrial units in an acidic environment.  

Silk is one of the most beautiful gift of nature which is generally produced by phytophagous Lepidopetra insects commonly known as Sericigenous insects and production of this fibre aptly known as “Queen of Textiles”. The important diseases affecting the quality and productivity of mulberry silk are Virosis, Flacherie, Sporozoasis and Muscardine. It is assumed that the said diseases have profound effect on the physiological and biochemical make up of silkworm because under the impact of diseases the metabolic manifestations of the silkworm show significant deterioration at the various stages of its life cycle. The impact of Muscardine and Flacherie disease on the biochemical contents at Female moths of Bombyx mori L. have been examined during the seed crop and commercial crop season. Table 1 and 2  have shown that the commercial crop has registered its supremacy over seed crop season as far as the concentration of the biochemical contents like free amino acids, carbohydrate, protein, lipid, moisture and ash at different stages of life cycle of Bombyx mori in respect of said disease. Seasonal differences in relation to the concentration of biochemical contents among the seed crop and commercial crop seasons are quite significant under the diseased conditions among the mulberry moths.

Biosorbent is an alternative material for the removal of dye from dyeing effluents by the adsorption technique.  Biosorbent prepared from Laplap Purpureus stem powder (LPSP) has been utilized as an adsorbent for the removal of Methyl Orange (MO) dye in the form of aqueous solution. The Biosorbent material was characterized by scanning electron microscope (SEM) and X-ray diffraction studies (XRD). The various adsorption parameters were studied. Such as pH, adsorbent dose, contact time and initial dye concentration. The removal of dye efficiency was characterized by Langmuir and Freundlich adsorption isotherm model.   The adsorption kinetic studies were also analyzed in the course of pseudo first order and pseudo second order models.  The result exhibits that the comparative study of the adsorption isotherm data were fitted well with Langmuir model. The kinetic studies also observed that the adsorption process good correlated with pseudo–second order">">

Urban and Suburban ambient air concentrations of Total Volatile Organic Compound (TVOC) were measured in Bilaspur city (Urban), Ratanpur (Suburban) and GuruGhasidasVishwavidyalaya (GGV, control), in Chhattisgarh.Bilaspur city was selected as a case study to assess the ambient air quality of TVOC specially released from the motor vehicle at the roadside.The spatial distribution during summer as well as correlation of TVOC at four sites in urban, suburban and control site at GGV campus were analysed. The TVOC analyzer (Phochech Tiger), Ion Science U.K. was used to analyse the concentration of TVOC at each site of the study area. The result show higher variation in TVOC concentration at urban, suburban (roadside) and GGV campus which is rich in greenery and having less vehicular load. The maximum TVOC has been observed at the site U4 144±5.8 ppb (near railway station). This is due to heavy vehicular load emission of semioxidised fuel.Through the study, low concentration of TVOC was found at a control site where low vehicular load and highest at urban areas

Co-doped Glutamic acid carbon nano tubes have been synthesizing by the  Co (II) with Glutamic acid, by green technique synthesis method. The synthesized CNTs are characterized using scanning probe instruments like, Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM),and Raman Spectra.The TEM analysis divulge the MWCNTs were composed of a graphitic-ring like structures are easily distinguishable around the central dark black Co nanoparticles. The interlayer separation between the two adjacent carbon walls is estimated to be about 0.36 nm. TEM result also showed that Co metal successfully recapitulation on the CNTs. The  Raman spectra revealed two peak namely G(graphite), D(disorder) and their second-order harmonic (the G’ band), explicitly appears at 1670 cm^-1, 1320 cm^-1 and 2750 cm^-1, respectively confirms nanostructure .The magnetic property of the synthesized CNT’s at different temperature is studied through vibrating stimulating magnetometer(VSM).The VSM analysis predicted CNT’s synthesized at 900^0c show ferromagnetic behaviour at the low field range but at the high field range it show diamagnetic behaviour .On the other hand the CNT’s synthesized at the 800^0c show the ferromagnetic. 

Nanotechnology is production and exploration of materials at nanoscale. Generally  nanoparticles  having  the  size  range  of  100  nm  and  are  clusters  of  atoms,  Nanoscale  dimensions  provides  nanoparticles  a  large  surface  area  to  volume  ratio.  Nanotechnology  is  expected  to  play  vital  role  in  various  disciplines  and  is  becoming  the  most  innovative  scientific  field.  Nanotechnology  plays  vital  role  in  the  production  food,  agriculture,  electronics,  medicine,  automotive,  information  and  communication  technologies,  energy,  textile,  construction.  Zinc  oxide  nanoparticle  had  been  studied  and  it  have  large  wide  band  gap  and  high  exciton  binding  energy,  and  its  application  in  the  field  of  medicine  and  scientific  research.  Nanoparticle can be classified according to their dimensionality, morphology.  In  this  context,  Nanoparticle  production  via  biological  route  is  more  reliable,  environmental-friendly  Microbes  or  plants  are  also  utilized  while  production  of  nanoparticle  they  produced  good  surface  and  reduction  property.

A facile and green protocol has been developed for the synthesis of 2-arylbenzothiazole derivatives in high to excellent yields using ethyl ammonium nitrate (EAN) as an acidic ionic liquid and their use as dual solvent-catalysts at room temperature. The Synthesized compounds were screened for antimicrobial activities against Gram-positive bacteria (Bacillus subtilis), Gram-negative bacteria (Pseudomonas aeruginosa) and fungus (Candida albicans). The antioxidant activities of these compounds were determined by DPPH scavenging activity. The key advantages of this protocol are high yields, short reaction times, mild reaction condition, eco-friendly, easy workup, no need of purification of products by chromatographic method and reusability of the catalyst.

Reaction of 4-methyl-3-(5-methyl-1H-tetrazol-1-yl)benzenamine with nine different aromatic aldehydes gives the target compounds (5a-i) in good yields. A total of nine new entities were synthesized and were characterized by IR, ¹H & ¹³C NMR and mass spectroscopic analysis and evaluated for their antibacterial and antifungal activities. Antibacterial activity data showed that compounds 5a, 5b, 5g, 5h and 5i were most notable against the bacterial strains. Besides, all the compounds were screened for their antifungal activities

In the present work, we report the synthesis of spiro chromanone based substituted 1,2,3-triazoles compounds under conventional heating, and microwave-irradiation conditions. The microwave irradiation techniques gave better yields as compare conventional heating method. All the synthesized scaffolds were characterized by IR, NMR, and mass spectral data analysis. All newly synthesized compounds were screened for their in-vitro antimicrobial activity against strains such as Staphylococcus aurous, Bacillus subtilis, Klebsiella pneumonia, Escherichia coli, Aspergillus Niger, Aspergillus flavus, and Fusarium oxysporum. The results of antimicrobial studies revealed that most of the scaffolds exhibit better activity as compared to the standard drug.

The goal of this study is to prepare organic compounds through green and eco-friendly chemical method. Green chemistry supports the methods that are based on green chemistry principles and carried out in micro scale, solvent free conditions, in the presence of non-hazardous chemicals (i.e., eco-friendly and non-polluting) and that consume less energy. In this study various organic reactions such as rearrangement reaction (Benzil - Benzilic acid rearrangement), Nitration of Phenol, Bromination of Acetanilide and radical coupling reaction has been carried out and the yield obtained is compared with the conventional method. Experiments were performed in our post graduate laboratory in the presence of PG students of chemistry and pharmaceutical chemistry.

The inhibitive action of hydrazine hydrate on corrosion of zinc in phosphoric acid solution was investigated by weight loss, temperature effect and potentiodynamic polarization methods. Corrosion rate increases with the increase in acid concentration and with the temperature. As temperature increases, percentage of inhibitor decreases. At constant acid concentration, the inhibition efficiency (I.E.) of Hydrazine hydrate increases with increase in inhibitor concentration. I.E. increases with the increase in acid concentration. Maximum I.E. was found 100 % I.E. in 80 mM inhibitor concentration in 0.01 M H₃PO₄ acid concentration. The mode of inhibitor action appears to be physiorption following the Langmuir adsorption isotherm. Tafel plots of polarization study indicates that Hydrazine hydrate act as mixed type inhibitor.

A simple, environmentally benign, green and highly efficient synthesis of Bis(indolyl)methane by using Microwave-promoted Microencapsulated-Cu(acac)₂ [MC-Cu(acac)₂] as a catalyst. [MC-Cu(acac)₂] is an attractive catalyst for the electrophilic addition reaction of indole with aldehyde to afford the corresponding bis(indolyl)methane. The procedure is simple, rapid and high yielding. Additionally, the catalyst could be reused up to four times without the significant loss in yield and selectivity of the product.

The aim of this study was usingwaste tea dust as a raw material to produce activated carbon to remove the basic dyes from aqueous solution. Waste tea dust was activated by using concentrated sulphuric acid and hot air oven. Batch mode experiments were conducted to evaluate the   adsorption capacity of the above activated carbon for the removal of basic dyes namely Methylene Blue, Malachite Green and Crystal violet from aqueous solution.  A series of experiments were conducted in a batch mode system to evaluate the capacity of carbon by changing the variables. i.e. effect of pH, carbon dose andinitial dye concentration were studied.  The experimental data were fitted with two well known isotherms, namely Langmuir and Freundlich isotherms. The pH and the structure of the basic dyes play an important role in the sorption process.

In this study, the potential health risk of natural radionuclides and rare earth metals in commonly consumed antidiabetic plants were investigated toward establishing their lifetime carcinogenic and non-carcinogenic effects in human population. The antidiabetic plants using Instrumental Neutron Activation Analysis (INAA) were analyzed for Al (Aluminium), As (Arsenic), Ba (Barium), Rb (Rubidium), Sc (Scandium), Sr (Strontium), La (Lanthanum), Sm (Samarium), Th (Thorium), Eu (Europium), and U (Uranium). The highest estimated daily intake (EDI) of 1.7E+00 mg/kg (in adults) and 6.78E+00 mg/kg (in children) for Al were observed to be from the consumption of Ageratum codyzoide (AC). The EDI were observed to be less than (<) the acceptable oral reference Dose (RfD) except in Jatropha gossypiifolia (JG), AC and Terminalia avicennioides (TA). The highest EDI for arsenic (As) were found in Anogeissus leiocarpus (AL) for the adults (1.70E-04 mg/kg) and children (6.80E-4 mg/kg) population respectively. The EDI were found to be <RfD (except for AL in children). The EDI for Ba following the consumption of TA, Sarcocephalus latifolius (SL), AC, Hymenocardia acida (HA), Sclerocarya birrea (SB), and JG were found to be >RfD. The EDI for SC, Sr, Sm, Eu and U were observed to be less than their corresponding RfD. However, high probability for potential health risk were observed for Rb, La, and Th based on their EDI values which were observed to be >RfD values. The health risk characterization for the metals based on the estimated target hazard quotient (THQ) and health index (HI) confirmed the antidiabetic plants safe for human consumption. Both the THQ and HI were observed to be <1. With the exception of the adults population whose CRI fall within the acceptable range (<10^-4); the risk for developing cancer were observed to be higher for children exposed to arsenic (As) through the consumption of AL. The CRI for As in AL (1.02E-03) were found to be >10^-4.

Metals and their complexes with organic ligands have an important role in chemical reactions (homogeneous and heterogeneous catalysis) and biological systems (enzymatic catalysis, metal ion transfer across the cell membranes, curing of malignant diseases, etc.). The main aim of the research is to the design and synthesis of new macrocyclic  complex compounds of biological and pharmacological interest and those of importance in catalysis and materials chemistry.Transition metal complexes are a group of heterocyclic compoundswhich have attracted much attention as a result of their varied pharmacological properties which include antibacterial,anticoagulants, antibiotic, antifungal, anticancer, and anti inflammatoryand share an important place in this regards. Further, it is evidenced that complexation of above metal ions with nitrogen and sulphur donor ligands increases the efficiency of biocidal activity. In the current research study, metallic surfactants of copper (derived from common fatty acids) were complexed with substituted 2-amino benzothiazoles. Complexes are characterized by elemental analysis, IR, NMR and ESR spectral data. Chromatographic evaluation was done by Thin Layer Chromatography in order to check purity^1-4. Antimicrobial efficacy of synthesized compounds was assessed against selective bacteria such as Bacillus and E. Coli^9-11. and antifungal activity against Fusarium oxysporum and T. Reesei^12-14 by using ager well diffusion method^5-8. Results concluded that as chelation increases the anti-microbial potency therefore synthesized transition metal complexes have significant antibacterial and antifungal activity in comparison with free ligands.

Medicinal plants have been the most important source of life saving drugs for thousands of years. There is a wide spread use of herbal remedies and healthcare preparations. Medicinal plants are considered to be nature’s gift and are the cheapest source of medicine. Mainly in traditional system of medicine, medicinal plant parts such as root, bark wood, stem, leaves of plant and sometimes the whole plant find uses for constitutional remedies. The present study aims to finger print the NMR spectra of the root ethanol extract of Cissus quadrangularisand Clerodendruminerme

An effortless method was reported for synthesis of Cu-Zn bimetallic nanoparticles by using leaf extract of Areva lanata as a reducing and capping agent. Characterization of the prepared nanoparticles was done by UV-Visible spectroscopy, FT-IR, SEM, EDX and TEM. These synthesized Cu-Zn bimetallic nanoparticles were used as photocatalyst for 82.6% degradation of Malachite Green dye by sunlight irradiation under optimum conditions and also used to study the antimicrobial activity against bacteria Staphylococus aureus, Streptococcus pyogenes, Micrococcus luteus, Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumonia by well diffusion method.

The Spectrophotometric simple, rapid and selective method for micro determination of iron, using selective reagent β -Keto sulphides [2-(4′-chloro phenyl mercapto-2′ -hydroxy-5′– chloroacetophenone] is reported. The complex is formed in cold condition at pH 2.02.It shows maximum absorption at 550 nm. Beer’s law is valid over the concentration range 0.1 to 10 ppm. Interference of anions and cations has been studied.

An expeditious, simple and green synthesis of pyrano[2,3-c]pyrazole derivatives by four component one pot condensation of hydrazine hydrate, ethyl acetoacetate,  aromatic aldehyde and malononitrile in presence of potassium tertiary butoxide  catalyst in aqueous medium is reported. Shorter reaction time, mild reaction condition and aqueous medium are the key advantages of this method affording moderate to excellent yield.

The present work deals with the QSAR¹ studies on the series of Phenylquinoline-4-carbohydrazide derivatives. It is envisioned that this study will produce models that can be used for future designing of new analogues with higher potency. K_i is NK₃ receptor antagonists are reported in the literature. Hansch analysis was used for multiparametric regression analysis.------------------------------------

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