• Login
    • Library Home
    View Item 
    •   BracU IR
    • School of Data and Sciences (SDS)
    • Department of Mathematics and Natural Sciences (MNS)
    • Bachelor of Science in Biotechnology
    • Thesis (Bachelor of Science in Biotechnology)
    • View Item
    •   BracU IR
    • School of Data and Sciences (SDS)
    • Department of Mathematics and Natural Sciences (MNS)
    • Bachelor of Science in Biotechnology
    • Thesis (Bachelor of Science in Biotechnology)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Rapid biological synthesis of silver nanoparticles from Cymbopogon citratus extract and evaluation of its antimicrobial properties

    Thumbnail
    View/Open
    14336002_MNS.pdf (1.706Mb)
    Date
    2018-07
    Publisher
    BRAC University
    Author
    Muntasir, Mohammed Nimeree
    Metadata
    Show full item record
    URI
    http://hdl.handle.net/10361/11066
    Abstract
    It has been well known for many years that silver Nanoparticles (NPs) are toxic to microorganism and can potentially kill them. They can also provide solution to different technological and environmental problems such as energy conversation, tailor-made medicine, cancer treatment, waste water treatment etc. Nanoparticles can be synthesized in many different ways such as physical and various other chemical methods. These methods are expensive and use many different toxic substances which make them difficult to scale these methods for mass production. In recent years it has been found that plant molecules can perform the same reduction reactions necessary for the production of nanoparticles but in a much more efficient way. Here, green chemistry were employed for the synthesis of silver nanoparticles (AgNPs) using leaf extracts of Cymbopogon citratus (Lemon Grass). Effects of different parameters such as temperature, pH and volume of plant extract were also tested using their absorbance pattern at different wavelengths. The total formation of the AgNPs was observed visually with a color change from yellow to brownish-black. UV-visible spectroscopy was used to monitor the quantitative formation of silver nanoparticles which showed a signature peak in absorbance between 400 and 500 nm. Changing different parameters had a significant effect on the size and position of the peak which also made an impact on the pattern of the curve, signifying the formation of nanoparticles of various shapes and sizes. The nanoparticles showed enhanced antibacterial activity against selected bacterial strains which analyzed based on the zone of inhibition (ZOI) and minimal inhibitory concentration (MIC).
    Keywords
    Cymbopogon citratus; Lemon grass; Antimicrobial property; Energy conversation; Cancer treatment
     
    LC Subject Headings
    Biological Phenomena.; Nanoparticles.
     
    Description
    This thesis is submitted in partial fulfilment of the requirements for the degree of Bachelor of Science in Biotechnology, 2018.
     
    Cataloged from PDF version of thesis.
     
    Includes bibliographical references (page 35-38).
    Department
    Department of Mathematics and Natural Sciences, BRAC University
    Collections
    • Thesis (Bachelor of Science in Biotechnology)

    Copyright © 2008-2019 Ayesha Abed Library, Brac University 
    Contact Us | Send Feedback
     

     

    Policy Guidelines

    • BracU Policy
    • Publisher Policy

    Browse

    All of BracU Institutional RepositoryCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    Statistics

    View Usage Statistics

    Copyright © 2008-2019 Ayesha Abed Library, Brac University 
    Contact Us | Send Feedback