Studies of antibacterial and antioxidant potential of methanol extract of Lawsonia inermis and Psidium guajava
Other Title(s)
دراسة الجهد المضاد للبكتيريا و المضاد للأكسدة في المستخلصات الميثانولية لنباتي الحناء و الجوافة
Dissertant
Thesis advisor
Comitee Members
Atruz, Umar Muhammad Falih
al-Zaraini, Wail Ali
al-Nuaymat, Sulayman Muhammad
University
Mutah University
Faculty
Faculty of Science
Department
Department of Biological Sciences
University Country
Jordan
Degree
Master
Degree Date
2015
English Abstract
The objective of this study was to assess the antibacterial and antioxidant activities of methanolic extracts obtained from aerial parts of two medicinal plants: Lawsonia inermis and Psidium guajava.
Both broth dilution and disc diffusion methods were used to assess the antibacterial activity of these extracts against several bacterial strains (S.
aureus, E.
coli, K.
pneumoniae, B.
subtilis and M.
luteus).
Antioxidant activity of these extracts was measured in vitro by DPPH and FRAP methods and expressed as Trolox Equivalent Antioxidant Capacity.
Both extracts exhibited antibacterial activity in dosedependent manner against the tested bacteria.
MICs were found between 500- 2000 μg /mL for P.
guajava and 250-1000 μg/mL for L.
inermis against the tested bacteria.
E.
coli growth was inhibited only by L.
inermis extract.
Both plant extracts, L.
inermis and P.
guajava, showed relatively high amounts of phenolic compounds (514 and 776 mg GA/g plant extract, respectively).
On other hand, the P.
guajava extract exhibited the best DPPH scavenging capacity and the best ferric reducing antioxidant power (37.5 and 7.93 mg Trolox/g plant extract, respectively).
In conclusion, both plant extracts exhibited antibacterial and antioxidant activities with L.
inermis showing the most antibacterial and P.
guajava showing the most antioxidant capacity.
Main Subjects
Topics
No. of Pages
52
Table of Contents
Table of contents.
Abstract.
Abstract in Arabic.
Chapter One : Theoretical background.
Chapter Two : Literature review.
Chapter Three : Design and methodology.
Chapter Four : Results, discussion and recommendation.
References.
American Psychological Association (APA)
al-Ghamidi, Ala Abd al-Rahman. (2015). Studies of antibacterial and antioxidant potential of methanol extract of Lawsonia inermis and Psidium guajava. (Master's theses Theses and Dissertations Master). Mutah University, Jordan
https://search.emarefa.net/detail/BIM-656307
Modern Language Association (MLA)
al-Ghamidi, Ala Abd al-Rahman. Studies of antibacterial and antioxidant potential of methanol extract of Lawsonia inermis and Psidium guajava. (Master's theses Theses and Dissertations Master). Mutah University. (2015).
https://search.emarefa.net/detail/BIM-656307
American Medical Association (AMA)
al-Ghamidi, Ala Abd al-Rahman. (2015). Studies of antibacterial and antioxidant potential of methanol extract of Lawsonia inermis and Psidium guajava. (Master's theses Theses and Dissertations Master). Mutah University, Jordan
https://search.emarefa.net/detail/BIM-656307
Language
English
Data Type
Arab Theses
Record ID
BIM-656307
