Research Journal of Chemistry and Environment

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Influence of halopriming and hydropriming on seed germination and growth characteristics of Zea mays L. cv. GSF-2 under salt stress

Jayesh Vaishnav and Meeta Jain

In order to investigate the effect of halopriming and hydropriming on seed germination and growth characteristics in Zea mays L. cv. Ganga Safed-2 genotype under salt stress, a study was conducted as factorial experiment based on the completely randomized design with eight replications. Halopriming by 50, 100, 150, 200 and 300mM NaCl solution and hydropriming by 1/4th Hoagland solution was carried out at five levels of salinity 50, 100, 150, 200 and 300mM NaCl. The results showed that priming treatment under non saline condition is highly effective. Germination, seed vigor index, seedling length, root length/shoot length ratio and fresh weight were significantly improved in response to priming at all salinity levels. Overall hydropriming treatment was comparatively superior than the halopriming. Germination index was also enhanced by priming seeds with 1/4th Hoagland solution suggesting that hydropriming is a simple low cost and environmentally friendly technique for improving seed and seedling vigor of maize.

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A Study on Floral Sap of Butea monosperma as a Substitute for Toxic Indicator in Acidimetric and Alkalimetry with reference to Green Chemistry

Gargh S.L., Gupta Poonam, Jain Pramod, Gotmare Sulekha and Summarwar Sudha

Indicators change the colour of solution with change in pH by adding acid or alkali. The present work acid base titration has been performed by using Natural indicator. The aqueous extract of Butea monosperma flower bracts was used as a Natural indicator. A comparative study of Butea monosperma flower bracts extract as a natural indicator, with synthetic indicator viz. Phenolphthalein, Methyl orange and Phenol red was carried out to evaluate the accuracy of Butea monosperma bract as an acid-base indicator. Butea monosperma commonly known as “Flame of the forest” is belonging to family Fabaceae. The natural indicator is prepared from the aqueous extract of Butea monosperma. Two acids (HCl, CH3COOH) and two bases (NaOH, NH4OH) were selected for acid base titration. 1N, 0,1N and 0.5N strength of these acids and bases were prepared. The equivalence points obtained by the floral extract coincide with the equivalence points obtained by synthetic indicators. Therefore, use of aqueous extract of flower as an indicator is more economical and having the greater accuracy of results as that given by synthetic indicator.

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Identification and Quantification of Flavonoids from Sphaeranthus Amaranthoides

Swarnalatha Y. and Jostna

Medicinal plants have been important part of the health care system. Plants contain phytochemicals which are responsible for its physiological and biological properties. These bioactive compounds protect the plants from pathogens, pests and insects. These compounds have various health benefit properties like anti-oxidant, hepatoprotective activity and anti-inflammatory etc. Amongst all the phytochemicals, flavonoids have been known to possess high activity to treat the hepatotoxicity and suggested to be used for the treatment of various diseases. In the present study, the leaf extract of Sphaeranthus amaranthoides was qualitatively as well as quantitavely estimated for the presence of total phenol and flavonoids content. Qualitatively flavonoids were identified from the leaves extract using chloroform: ethyl acetate by thin layer chromatography. The total phenol content was estimated by Folin-Ciocalteu reagent and found to be 22.6mg/g. The flavonoid content was estimated by Aluminium chloride colorimetric method and found to be 13.2mg/g.

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Synthesis and biological activities of some novel imines

Sapale S.R. and Shetgiri N.P.

Imines having carbocyclic rings and heterocycles such as benzothiazole, benzimidazole have been synthesized. The structure of the synthesized compounds was confirmed by IR, NMR, CMR and Mass Spectroscopy. These compounds were evaluated for their biological efficacy.

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Mannich amino methylation reactions using Chloromethyl Methyl Ether

Rege C.M., Gadre J.N. and Bhalekar S.M.

Mannich bases are synthesized using chloromethylmethyl ether instead of formaldehyde, paraformaldehyde, 1,3,5-trioxane or 1,3- dioxolane.The structure of the compounds prepared has been confirmed by spectroscopic methods.

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Microwave assisted synthesis, structure and spectral characterization of novel Schiff’s bases of Thiocarbonohydrazides under solvent and catalyst free conditions

Nalawade R. A., Nalawade A. M., Londhe B. S. and Shejwal R.V.

Nowadays eco-friendly green synthetic methodologies are in great demand. A series of new Schiff’s base derivative of thiocarbonohydrazide were synthesized by condensation of thiocarbonohydrazide with different substituted aromatic aldehydes and ketone under microwave irradiation without catalyst and under solvent free condition as a green chemistry approach. Within few minutes, reaction proceed selectively giving high yields of the products. The structures of these products were confirmed by spectral analysis.

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Synthesis, characterization and theoretical studies of an asymmetrical amine containing piperazine moiety and related Mn(II), Cd(II) and Zn(II) macrocyclic Schiff base complexes

Majid Rezaeivala

Six new Mn(II), Cd(II) and Zn(II) macrocyclic Schiff base complexes have been prepared via the Mn(II), Cd(II) and Zn(II) templated [1+1] cyclocondensation of 2,6-diacetylpyridine or 2,6-diformylpyridine with an asymmetrical linear amine, N,N'(2-aminoethyl) (4-aminobutyl) piperazine, containing piperazine moiety. The complexes have been characterized by elemental analysis, IR and FAB-MS. Computational studies of [ML1Cl]+ and [ML2Cl]+ type complex ions, where M is metal ion, are done by using B3LYP method with LANL2DZ basis set and mix basis set which is LANL2DZ for metal atom and 6-31G for rest atoms in complex ions. The protonation constants of two asymmetrical amines have been determined potentially in 0.1 M KCl at 25 °C.

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Biodegradation of diclofenac: A review

Cherik D. and Louhab K.

Diclofenac (DCF) is a pharmaceutical residue of therapeutic class of non-steroidal anti-inflammatory. It is often detected in the wastewater treatment plants (influent and effluent) and surface waters. This review focuses on its biodegradation with activated sludge (CAS) or bioreactor membrane (MBR). Microorganisms play a key role in this biodegradation. A lot of factors can affect the efficiency of this biodegradation depending upon sludge retention time (SRT), temperature, pH, redox conditions and sludge characteristics. The performance of biodegradation is inspected using biological process technology by activated sludge and membrane bioreactor.

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