Antibacterial activity from Malaysian mango kernel

Al-Shwyeh, Hussah Abdullah and Mirghani, Mohamed Elwathig Saeed and Jamal, Parveen (2011) Antibacterial activity from Malaysian mango kernel. In: 2nd International Conference on Biotechnology Engineering (ICBioE 2011), 17-19 May 2011, The Legend Hotel, Kuala Lumpur.

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Abstract

Mango (Mangifera indica L.) is a fruit belonging to the genus Mangifera and family Anacardiaceae, consisting of numerous species of tropical fruiting trees in the flowering plant. Mango has been reported to have high antibacterial activity against gram positive bacteria, aids the development of the placenta and fetus, and helps the metabolic activities of teeth, the retina and skin, while preventing anemia. In addition, it also helps to tighten the capillary vessels. However, the significant increases of mango consumption in domestic activity lead to the accumulation of waste especially its kernel. This study attempts to screen three varieties of Mango kernels; waterlily, lemak and shakran extracted using four different extraction solvent; ethanol, methanol, acetone and distilled water to examine the potential of Mango kernel as natural antibacterial against four bacterial strains; Staphylococcus aureus, Bacillus subtillis, Escherichia coli and Pseudomonas aeruginosa. Disc diffusion assay was employed to determine the antibacterial activity. Later, the optimization of process conditions for extraction of antibacterial activity (having widest inhibition zone) was conducted in shake flasks based on the experimental design suggested by Central Composite Design (CCD) under Response Surface Methodology (RSM) from Design Expert v.6.0.8. by manipulating reaction temperature (ºC), reaction time (hour) and agitation speed (rpm). It was found out that waterlily has the best antibacterial activity utilizing ethanol as the extraction solvent. Optimization of this sample was run and the maximum antibacterial activity (16.80 mm) was reached at 37ºC, 24 hours and 200 rpm. Identification of the active compound using GC-MS recognized phenol, 2, 4-bis (1, 1-dimethylethyl) as the possible compound accountable for antibacterial activity. This finding would probably become an alternative source of new and natural antibacterial agents.

Item Type:	Conference or Workshop Item (Full Paper)
Additional Information:	4971/4615
Uncontrolled Keywords:	Mangifera indica L., antibacterial activity, disc diffusion assay, optimization, GC-MS
Subjects:	Q Science > QR Microbiology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User:	A Prof Elwathig Mirghani
Date Deposited:	27 Sep 2011 11:18
Last Modified:	05 Oct 2011 14:40
URI:	http://irep.iium.edu.my/id/eprint/4615

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