Booth Id:
MCRO047
Category:
Microbiology
Year:
2021
Finalist Names:
Peco, Amela (School: Sjolins Gymnasium Sodermalm)
Abstract:
The purpose of the study was to investigate whether the selected beehive products honey, propolis
extract and royal jelly inhibit the growth of gram-positive and gram-negative bacteria. For the
study to be possible to perform, a laboratory method was used where bacteria were grown on
agar plates and where the gram staining method was used to be able to identify whether the
bacteria that were grown were gram-positive or gram-negative. The identified bacteria were
transferred to new agar plates where the beehive products examined were also placed. The agar
plates were kept in a heating cabinet for 72 hours. The laboratory results showed that propolis
extract had the greatest antimicrobial effect as it is the only product that formed clear
inhibition zones. The inhibition zone on the gram-positive bacteria was 22 mm and on the
gram-negative 20 mm. Honey inhibited the growth of gram-positive and gram-negative
bacteria that came in direct contact with the product. Royal jelly did not affect the growth of
gram-negative bacteria. Several factors may have affected the results of this study and in
further research, these should be taken into consideration.