Australian Stingless Bee Honey Shows Potential Against Antibiotic-Resistant Bacteria

A study conducted by researchers at the University of Sydney, published in PLOS One, indicates that honey produced by Australian native stingless bees—often called sugarbag bees—exhibits significant antimicrobial properties. The findings suggest that this honey could provide new avenues for addressing antimicrobial resistance.

Research Methodology and Findings

Led by PhD candidate Jasmin Li, the research team analyzed honey and propolis from the species *Tetragonula carbonaria*. The substances were tested against 16 different bacterial and fungal pathogens. The study highlights several key observations:

• Broad-Spectrum Inhibition: The honey successfully inhibited the growth of every bacterium tested, including *Pseudomonas aeruginosa* and *Klebsiella pneumoniae*, which are known for being difficult to treat in clinical settings.
• Comparative Efficacy: The antimicrobial strength of sugarbag honey was found to be comparable to established medical-grade honeys like Manuka and Jarrah.
• Antifungal Properties: Beyond bacteria, the honey demonstrated effectiveness against fungi responsible for common conditions such as ringworm and athlete's foot.
• Propolis Selectivity: Unlike European honey bee propolis, the propolis from these native bees showed high selectivity, acting effectively against specific pathogens while ignoring others, which researchers suggest could be an advantage for targeted medical therapies.

Future Research Directions

While the results are promising, scientists have yet to identify the specific compounds responsible for this antimicrobial activity. Dr. Kenya Fernandes, a co-author of the study, noted that the absence of known compounds suggests the presence of previously unidentified substances. Future investigations will focus on isolating these components to determine their potential for developing new treatments against resistant infections. To verify the full scope of this study, readers may refer to the original publication in the journal *PLOS One*.