Effect of Some Volatile Oils on Staphylococcus aureus and Pseudomonas aeruginosa Isolates from Burn Patients

Author's: Ebtesam Hassan Lutf Alhamzi1*, Maher Ali Al.Maqtari2
Authors' Affiliations
1Biology Department, 2Chemistry Department, Faculty of Science, Sana'a University, Yemen.*CorrespondenceEbtesam Hassan Lutf AlhamziEmail:drebtesam.hasan@yahoo.com
Article Type: Research Article     Published: Nov. 12, 2021 Pages: 95-107
DOI:        Views 417       Downloads 0


Burn wound infection is a major complication in burn patients after the initial period of shock. Microbial infection of burn wounds causes more than 70% mortality in burn patients. This study was conducted from March 2019 to May 2019 at Teiba Center for Burns Surgery in Al-Jumhory Hospital located in Sana’a city, Yemen. A total of 40 swab specimens of burn wounds were collected. Specimens were inoculated on Blood agar media and MacConkey Agar media and were incubated aerobically for 24 hours at 37 °C. Specimens of third-degree burns were inoculated on Blood Agar media and incubated anaerobically for 75 hours at 37°C. Bacterial colonies were identified by biochemical and diagnostic tests. Screening of volatile oils (Lavandula pubescens, Plectranthus barbatus, and Thymuslaevigatus) for antibacterial activities was done by the disk diffusion method. Our results showed that 25 (63%) of patients were males and 15 (37%) were females. The second-degree burns were the most common 18 (45%), followed by third-degree burns 13 (32%), 25 (62%) were flame, 7 (18%) were scalds, 8 (20%) cases were chemical burns. Out of 28 positive cultures, Staphylococcus aureus was the most common organism isolated 20 (71%), followed by Pseudomonas aeruginosa 8 (29%). Lavandula oils and Plectranthus oils showed inhibition against the growth of S. aureus and P. aeruginosa at 20µl.


Staphylococcus aureus,

Pseudomonas aeruginosa,

Burn infections,



Thyme volatile oils.

How to cite

Alhamzi, E.H.L., Al.Maqtari, M.A., 2021. Effect of Some Volatile Oils on Staphylococcus aureus and Pseudomonas aeruginosa Isolates from Burn Patients. PSM Microbiol., 6(4): 95-107.