In-vitro anti-Mycobacterium tuberculosis effect of essential oil of Ocimum sanctum L. (Tulsi/Basil) leaves

• DOI: 10.1016/j.ijtb.2021.02.009
• Publication Date: 2021-02-21T02:41:55Z
• Authors: Venugopal Jayapal; C.K. Vidya Raj; Muthuraj Muthaiah; Vineet Kumar Chadha; Usharani Brammach...; Stephen Selvaraj; Joshy M. Easow
• Keywords: Plant Leaves; 0301 basic medicine; 0303 health sciences; 03 medical and health sciences; Plant Extracts; Ocimum sanctum; Ocimum basilicum; Oils, Volatile; Humans; Mycobacterium tuberculosis; Tuberculosis, Lymph Node; 3. Good health

Mycobacterium tuberculosis, the causative agent of tuberculosis has developed resistance to most of the available antimicrobials. Consequently, it is difficult to cure all the patients with tuberculosis and in future, the incidence of tuberculosis by drug resistant M. tuberculosis is likely to increase, worldwide. Therefore detection and development of new antimicrobials against M. tuberculosis is needed urgently.Essential oil from the leaves of Ocimum sanctum L (Tulsi/Basil) was obtained by hydro distillation. The anti-mycobacterial effect of essential oil was evaluated against H37Rv and nine clinical isolates of M. tuberculosis in the BD BACTEC MGIT instrument using different volumes of essential oil.The essential oil inhibited the growth of H37Rv and all the nine clinical isolates of M. tuberculosis. The minimal inhibitory concentration of H37Rv was 3 μl (2.931 μg) and those of the clinical isolates of M. tuberculosis ranged from 1.5 μl (1.4655 μg) to 6 μl (5.862 μg).The Essential oil from the leaves of O. sanctum L.(Tulsi/Basil) has anti-M. tuberculosis effect in the in-vitro BD BACTEC MGIT method.