Journal of Biotechnology & Biomaterials
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Despite the progress of the world, the dental caries disease is still widespread at a high rate in the world. Miswakwhich is
derived fromArak plant (
) is used by Muslim people as a natural source for cleansing teeth to ensure oral
and dental hygiene. This study was designed to evaluate the antimicrobial activity effects of ethanol, methanol, and ethanol/
methanol extracts of miswakagainst three oral bacterial pathogens. The pathogens were isolated from the oral cavity persons
and were identified on the bases of 16S rRNA gene amplification and sequence comparison with the 16S rRNA gene sequences
available in GenBank database. Results of sequence Alignment and phylogenetic analysis identified the three isolates as
strain KKU-021 and
strain KKU-022. All
miswak extracts showed extremely high effects against the three pathogens. Maximum zone of inhibition (40.67?0.88mm) was
observed against E. faecalis with ethanolic extract. Based on the significant effects of the miswak extracts against the oral cavity
pathogens, the study therefore, recommended miswak to be used as a dental hygiene method to prevent tooth caries.
Abd El-Latif Hesham graduated and got his MSc from Genetics department, Faculty of Agriculture,Assiut University, Egypt and his PhD degree from Chinese
academy of Sciences in Microbial Genetics and Environmental Meta-Genome Biotechnology. He was awarded postdoctoral studies from CAS-TWAS. His
research experiences are: in ?MicrobialGenetics?, ?Molecular Genetics?, ?Biofuels Biotechnology?, ?Environmental Meta-genome Biotechnology?, ?Biodegradation &
Bioremediation (PAHs and Rubber degradation)?, ?Microbial community structure and diversity?, ?Wastewater treatment?, ?Medicinal plant extracts and antimicrobial
activities?. He is an expert in molecular biological techniques, including Clone library, RFLP and gene sequencing, phylogenetic analysis, florescent in situ
hybridization (FISH), PCR-DGGE, MPN-PCR, reverse transcriptase PCR, and real time PCR (RT-PCR). He has published about 30 papers in reputed journals and
serving as an editor in chief, editorial board member and reviewer of international reputed journals.
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