Antioxidant and antibacterial activities of methanol extracts of Commiphora gileadensis and Olea europaea linked to their polyphenol composition
Other Title(s)
النشاطية المضادة للأكسدة و المضادة للبكتيريا للمستخلصات الميثانولية لنباتات البشام و الزيتون مرتبطة مع المحتوى الفينولي فيها
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
Antibacterial and antioxidant properties of methanolic extracts derived from aerial parts of two plants (Commiphora gileadensis and Olea europaea) were investigated in this study.
Serial dilution and disc diffusion methods were performed to measure the antibacterial activity of these extracts against different bacterial strains (S.
aureus, E.
coli, K.
pneumoniae, B.
subtilis and M.
luteus).
The total phenolic content was assessed by Folin-Ciocalteu method.
The antioxidant capacity was assessed by both DPPH and FRAP methods.
The amount of the extract required to scavenge 50% of DPPH radical (IC50) was also measured.
Variations were observed among the examined plants in antibacterial and antioxidant activities as well as in their phenol contents.
The results of antibacterial investigation showed that both plants have a good antibacterial activity against all tested bacterial strains except E.coli.
O.
europaea contained higher amount of phenolic compounds (648 mg GA/g plant extract) than C.
gileadensis (356 mg GA/g plant extract).
According to the IC50 values of DPPH assay, the free radical scavenging potential of O.
europaea extract (0.05 mg/mL) was higher than that of C.
gileadensis (0.07mg/mL).
The trend for ferric ions reducing activities of both plant extracts did not vary markedly from their DPPH free radical scavenging activities.
In conclusion, these plants are not only interesting sources for antimicrobial agents but also have a considerable amount of antioxidants.
In addition, these findings revealed that the antioxidant capacity of these plant extracts could be attributed to their total phenolic content.
Main Subjects
Topics
No. of Pages
45
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, discussions and recommendations.
References.
American Psychological Association (APA)
al-Zahrani, Ibrahim. (2015). Antioxidant and antibacterial activities of methanol extracts of Commiphora gileadensis and Olea europaea linked to their polyphenol composition. (Master's theses Theses and Dissertations Master). Mutah University, Jordan
https://search.emarefa.net/detail/BIM-656406
Modern Language Association (MLA)
al-Zahrani, Ibrahim. Antioxidant and antibacterial activities of methanol extracts of Commiphora gileadensis and Olea europaea linked to their polyphenol composition. (Master's theses Theses and Dissertations Master). Mutah University. (2015).
https://search.emarefa.net/detail/BIM-656406
American Medical Association (AMA)
al-Zahrani, Ibrahim. (2015). Antioxidant and antibacterial activities of methanol extracts of Commiphora gileadensis and Olea europaea linked to their polyphenol composition. (Master's theses Theses and Dissertations Master). Mutah University, Jordan
https://search.emarefa.net/detail/BIM-656406
Language
English
Data Type
Arab Theses
Record ID
BIM-656406
