Microbial Production of Silver Nanoparticles (Agnps) By Some Bacterial Isolates
Journal Title: IOSR Journal of Biotechnology and Biochemistry (IOSR-JBB - Year 2018, Vol 4, Issue 4
Abstract
The five bacterial strains viz. Brevibacillus centrosporus DSM8445T, Brevibacillus invocatus NCIMB13772T, Brevibacillus choshinensis DSM8552T, Brevibacillus panacihumi DCY35 and Brevibacillus levickii LKG22481were screened for production of AgNPs using their extracellular (cell free supernatant) of bacterial cultures. The primary sight for AgNPs formation was change of colour of reaction mixture from pale yellow to dark brown. In the present investigation it is evident that isolated bacterial strain Brevibacillus invocatus NCIMB13772T was the most efficient bacterial strain in production of AgNPs (0.996) followed by isolated bacterial strain Brevibacillus centrosporus DSM8445T (0.960), Brevibacillus panacihumi DCY35 (0.920), Brevibacillus levickii LMG22481 (0.382) and Brevibacillus chosinensis DSM8552T (Table- 2). The primary conformation of synthesis of nanoparticles in the medium was characterized by the changes in color from yellowish white to brown , the knowledge about the reduction of silver ions and formation of silver nanoparticles were still not clear, but it is believed that protein molecules and enzyme, the nitrate reductase act as good regulating agent in silver nanoparticles synthesis. The biosynthesis of AgNPs by these five bacterial strains has also been confirmed by FTIR, XRD and SEM techniques.
Authors and Affiliations
Amar Kumar, Baidyanath Kumar, Ashok Ghosh, Mini Tiwari, Muddassir Reyaz
Keywords
Related Articles
- EP ID EP415140
- DOI 10.9790/264X-0404022638.
- Views 123
- Downloads 0
Antibiofilm effects of Adhatoda Vasica Nees. extracts in comparison with commercial vasicine on Streptococcus Pneumoniae
Medicinal plants like Adhatoda vasica Nees. are used traditionally in Tripura to cure pneumonia, cough and cold. Pneumonia is a lung infection with cough, fever and hard time breathing. Pneumonia is mainly caused by bact...
Genotypical Variability Of Quantitative Characteristics Of The Biochemical Composition Of Fruits Of Introduced Plants Of Ericaceae And Actinidiaceae Families Within The Conditions Of Belarus
Quoted results of a comparative variability study of fourteen quantitative characteristics of the biochemical composition of fruits in cultivar rows of four species of introduced plants from the Ericaceae family (Oxycocc...
Evaluation Of The Effects Of Methanol Extracts Of Leaf And Stem Bark Of Buchholziacoriacae (Wonderful Kola) On Some Biochemical Parameters Of Streptozotocin-Induced Diabetic Rats.
The hypoglycemic, hypolipidemic andhypoch olesterolemia effects of the methanol extractsof leaf and stem bark of Bucholziacoriaceawere studied in normal and streptozotocin-induced diabetic male wister rats. The result of...
External Quality Assurance Scheme (EQAS): Criteria for Evaluating Performance of a Laboratory
Introduction: External Quality Assessment Scheme (EQAS) involves evaluation of a number of laboratories by an outside agency on the performance of a number of laboratories based on their analytical performance of tests o...
Antimicrobial Activity Of Murraya Koenigii And Zingiber Officinale Plants On Drug Resistant Pathogens Isolated From Clinical Specimens And Preliminary Phytochemical Analysis Of The Crude Extract Preparations.
The aim of the present study was to investigate the antimicrobial activity and phytochemical screening of Murraya koenigii and Zingiber officinale plant extracts. Ethanol and Methanol were used as the solvents for extrac...