Antimicrobial activity and phytochemical screening of methanolic extracts of hypericum triquetrifolium

العناوين الأخرى

فحص النشاطية المضادة للميكروبات و المواد الكيميائية النباتية للمستخلصات الميثانولية لنبات العرن

مقدم أطروحة جامعية

al-Utaybi, Mashal

مشرف أطروحة جامعية

al-Tarawinah, Khalid Ahmad

أعضاء اللجنة

al-Zarani, Wail Ali
al-Harub, Amir Munawwir
Atruz, Umar Muhammad Falih

الجامعة

جامعة مؤتة

الكلية

كلية العلوم

القسم الأكاديمي

قسم الأحياء

دولة الجامعة

الأردن

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2014

الملخص الإنجليزي

Antimicrobial and antioxidant activities of methanolic extract of the aerial parts of Hypericum triquetrifolium was investigated.

Serial dilution and disc diffusion methods were performed to measure the antibacterial activity of this extract 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 amount of the extract required to scavenge 50% of DPPH radical (IC50) was also measured.

The antioxidant capacity was assessed by both DPPH and FRAP methods.

The results of antibacterial assay showed that M.

luteus, B.

subtilis and S.

aureus exhibited the highest sensitivity to the plant extract followed by K.

pneumoniae and E.

coli.

High amount of phenolic compounds (621 mg GA / g plant extract) was found in the plant extract .

According to the DPPH assay, Hypericum triquetrifolium showed high free radical scavenging potential (62.5 mg Trolox / g plant extract).

The trend for ferric ions reducing activitiy was relatively high (6.7 mg Trolox / g plant extract) .

In conclusion, this plant was not only interesting source 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

التخصصات الرئيسية

الأحياء

الموضوعات

عدد الصفحات

37

قائمة المحتويات

Table of contents.

Abstract.

Abstract in Arabic.

Chapter One : Theoretical background.

Chapter Two : Literature review.

Chapter Three : Materials and methods.

Chapter Four : Results, discussion and recommendation results.

References.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

al-Utaybi, Mashal. (2014). Antimicrobial activity and phytochemical screening of methanolic extracts of hypericum triquetrifolium. (Master's theses Theses and Dissertations Master). Mutah University, Jordan
https://search.emarefa.net/detail/BIM-561555

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

al-Utaybi, Mashal. Antimicrobial activity and phytochemical screening of methanolic extracts of hypericum triquetrifolium. (Master's theses Theses and Dissertations Master). Mutah University. (2014).
https://search.emarefa.net/detail/BIM-561555

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

al-Utaybi, Mashal. (2014). Antimicrobial activity and phytochemical screening of methanolic extracts of hypericum triquetrifolium. (Master's theses Theses and Dissertations Master). Mutah University, Jordan
https://search.emarefa.net/detail/BIM-561555

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-561555