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Comparative study of antimicrobial potential of white tea and black tea leaf extracts from East Java-Indonesia on two species of oral streptococci

Kusumawardani, Anisa and Sukmasari, Susi and Mutalib, Nurul Akmal Abdul and Rahman, Siti Fatihah Abdul and Ichwan, Solachuddin Jauhari Arief (2019) Comparative study of antimicrobial potential of white tea and black tea leaf extracts from East Java-Indonesia on two species of oral streptococci. In: Conference on BioMedical and Advanced Materials (Bio-CAM 2017), 28th-29th November 2017, Pulau Langkawi, Kedah.

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Abstract

Tea leaves have been known to have antimicrobial properties against many types of bacteria. This study was aimed to compare antibacterial activity of white tea and black tea leaf extracts against two cariogenic oral Streptococcus mutans and Streptococcus sobrinus bacteria. Ethanol-based and water-based extracts of white tea and black tea fermented leaves from Wonosari highland tea plantation (East Java, Indonesia) were used in this study. Disk Diffusion Assay was performed to assess the antimicrobial activity of the extracts. The zones of inhibition were measured after 72 hours of incubation period. We found that the ethanolbased and water-based white tea extracts showed significant antibacterial activity against Streptococcus mutans and Streptococcus sobrinus, while ethanol-based and water-based extracts of black tea showed antibacterial effect against Streptococcus mutans only. However, the inhibition zone of ethanol-based and water-based extracts of black tea against Streptococcus mutans were greater compared to white tea. These results indicate the potential health benefit of white tea and black tea for reduction of cariogenic pathogens.

Item Type: Conference or Workshop Item (Plenary Papers)
Additional Information: 6634/74848
Uncontrolled Keywords: White tea, Black tea, Streptococcus mutans, Streptococcus sobrinus, antibacterial, cariogenic
Subjects: R Medicine > RK Dentistry > RK318 Oral and Dental Medicine. Pathology. Diseases-Therapeutics-General Works
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Dentistry
Kulliyyah of Dentistry > Fundamental Dental and Medical Sciences
Depositing User: Dr. Susi Sukmasari
Date Deposited: 15 Oct 2019 16:29
Last Modified: 15 Oct 2019 16:29
URI: http://irep.iium.edu.my/id/eprint/74848

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