• Users Online: 1474
  • Home
  • Print this page
  • Email this page
Home About us Editorial board Search Ahead of print Current issue Archives Instructions to authors Subscribe Contacts Login 
Year : 2017  |  Volume : 4  |  Issue : 1  |  Page : 18-21

Effect of concentration and brewing time on the antimicrobial activity of Camellia sinensis (green tea) against oral bacteria

1 Department of Periodontics, Faculty of Dental Sciences, SGT University, Gurgaon, Delhi-NCR, Haryana, India
2 Department of Microbiology, Faculty of Medicine and Health Sciences, SGT University, Gurgaon, Delhi-NCR, Haryana, India

Correspondence Address:
Veenu Madaan Hans
Department of Periodontics, Faculty of Dental Sciences, SGT University, Gurgaon, Delhi-NCR, Haryana
Login to access the Email id

Source of Support: None, Conflict of Interest: None

DOI: 10.4103/1658-6816.200138

Rights and Permissions

Background and Aim: Green tea, a rich source of flavonoids, has tremendous oral health potential. This study evaluates the effect of brewing green tea at varying concentrations and duration on its antimicrobial activity against oral bacteria. Materials and Methods: Green tea was brewed in 15 concentration and time combinations. Paper disc diffusion test was carried out with these infusions on Tryptic Soy Agar plates inoculated with oral bacteria. Zone of inhibition after 72 h of incubation at 37°C was measured in millimeters. Results: Higher zone of inhibition was observed in concentration brewed for 15 min than 30 and 60 min. Zone of inhibition was directly proportional to the concentration of green tea brewed. Most effective concentration was 80 mg/ml with a mean of 2.83 mm which was significantly higher than mean zone of inhibition for 60 mg/ml (P < 0.05). Conclusion: Increasing the concentration and decreasing the brewing time of green tea results in a higher inhibitory effect on growth of oral bacteria.

Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)

 Article Access Statistics
    PDF Downloaded385    
    Comments [Add]    
    Cited by others 1    

Recommend this journal