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Formulation and evaluation of antibacterial activity from various plant extracts against Streptococcus species

Author Affiliations

  • 1Department of Biotechnology, Vivekanandha College of Engineering for Women, Tiruchengode–637 205, Tamilnadu, India
  • 2Department of Biotechnology, Vivekanandha College of Engineering for Women, Tiruchengode–637 205, Tamilnadu, India
  • 3Department of Biotechnology, Vivekanandha College of Engineering for Women, Tiruchengode–637 205, Tamilnadu, India

Int. Res. J. Biological Sci., Volume 8, Issue (12), Pages 34-36, December,10 (2019)


Three medicinal plants such as Thespesia populnea, Ricinus communis and Catharanthus roseus were screened for antibacterial activity against Streptococcus species with the different combinations. Coconut oil, Neem oil and Aloevera gel were mixed with the medicinal plants separately to screen them for their antibacterial activity. Agar well diffusion technique was carried out. Among these three plants Thespesia populnea fruit with coconut oil and aloevera gel showed high zone of clearance when compared to others.


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