@article {719, title = {Phytochemical Screening and Antimicrobial Studies in Leaf Extracts of Indigofera aspalathoides (Vahl.)}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {August 2018}, pages = {1208-1215}, type = {Original Article}, chapter = {1208}, abstract = {

Introduction: In traditional Indian herbal medicine, the plant Indigofera aspalathoides (Vahl.) has been used to treat various human ailments. Methods and Results: Various phytochemical compounds (Rf value) such as Tannin (1.14), Flavonoid (1.14), Saponin (0.87), Sterol (0.88) and Phenol (0.86) were found in the leaf extract. The antimicrobial effects of the phytoconstituents were examined for three bacterial and fungal species. The highest anti-bacterial and antifungal activities were found in flavonoid compound, where the maximum zone of inhibition was recorded in Staphylococcus aureus 18mm compared to positive control chloramphenicol (24mm). 13mm observed in A. flavus and A. ochraceous where positive control streptomycin exhibits 18mm. GC-MS analysis revealed the presence of three major compounds in 8\α (2H)-Phenanthrenol, 7-ethenyldodecahydro-1,1,4\α, 7-tetramethyl-, acetate, [4\αs(4\α\α, 4b\α, 7\α, 8\α\α, 10\α\α)], Benzoic acid, 4-methyl- , 2-oxo-2- phenylethyl ester and Cyclohexanol, 5-methyl-2-(1-methylethyl)-, [1S-(1\α,2\α,5\α)] in the crude extracts. The preparative HPLC analysis proved the presence of single peak from the crude flavonoid compounds, where the absorption maximum was between 207-290nm exhibited by the UV spectrum analysis. FTIR spectrum confirmed the presence of amide group, phenol group, carboxylic acid, alkynyl, alkene and aromatic ring. NMR studies proved the presence of phenyl group, methyl group and H2C-CH group and their molecular weight recorded as 353 through the mass spectrum analysis. Conclusion: The identified compound considered as the vital compound to design the \“green antimicrobial drugs\”.

}, keywords = {Antimicrobial activities, GC-MS, HPLC, Indigofera aspalathoides, MS, NMR}, doi = {10.5530/pj.2018.6.207}, author = {Tamilarasan Tamil Kumar and Seeni Mohamed Salique and Mohamed Hussain Muhammad Ilyas and Nooruddin Thajuddin and Annamalai Panneerselvam and Mohamed Khan Syed Ali Padusha and Hussain Syed Jahangir} } @article {200, title = {Synthesis of Plant Mediated gold Nanoparticles using Azima Tetracantha Lam. Leaves extract and Evaluation of their Antimicrobial Activities}, journal = {Pharmacognosy Journal}, volume = {8}, year = {2016}, month = {Oct 2016}, pages = {507-512}, type = {Original Article}, chapter = {507}, abstract = {

Aim: The demand for nanoparticles is increasing day by day due to their wide range of applications in various areas including pharmaceutical industry. Nanoparticles are formally synthesized by chemical methods in which the toxic and flammable chemicals are used. Methods: This article reports about an effective, rapid and eco-friendly technique for the fabrication of gold nanoparticles from gold chloride solution using Azima tetracantha Lam. leaves extract. The effects of the leaves extract of Azima tetracantha, the concentration of Gold chloride solution, the time of the reaction and the effect of tem\¬perature on the rate of the reaction were investigated. The synthesized gold nanoparticles (AuNPs) were characterized by using various techniques such as Dynamic Light Spectroscopy (DLS), Scanning Electron Microscopy (SEM), UV-Vis spectra gave surface plasmon resonance (SPR) at 540 nm, Fourier Transform Infrared spectroscopy (FTIR) and X-ray diffraction (XRD). This revealed the reduction of gold ions (Au+) to gold metal (Au0) which indicated the formation of gold nanoparticles (AuNPs). Results: The antimicrobial action of biosynthesized AuNPs indicated effective activity against bacterial pathogens Aeromonas liquefaciens, Enterococcus fecalis, Micrococcus luteus, Salmonella typhimurium and fungal pathogens Candida albicans, Cryptococcus sp, Microsporum canis, Trichophyton rubrum. Conclusion: This revealed that gold nanoparticles could provide a safer alternative to conventional antimicrobial agents.

}, keywords = {Antimicrobial Activity., Azima tetracantha Leaves Extract, Biosynthesis, Characterization, Gold Nanoparticles}, doi = {10.5530/pj.2016.5.17}, author = {Abirami Hariharan and Tajuddin Nargis Begum and Mohamed Hussain Muhammad Ilyas and Hussain Syed Jahangir and Premkumar Kumpati and Shilu Mathew and Archunan Govindaraju and Ishtiaq Qadri} }