Concentrated extract of maple syrup with common antibiotics could increase the microbes' susceptibility, leading to lower antibiotic usage. Overuse of antibiotics fuels the emergence of drug-resistant bacteria, which has become a major public-health concern worldwide, reveal findings of the researchers at McGill University.
Prof. Nathalie Tufenkji's research team prepared a concentrated extract of maple syrup that consists mainly of phenolic compounds. Maple syrup, made by concentrating the sap from North American maple trees, is a rich source of phenolic compounds.
AdvertisementThe researchers tested the extract's effect in the laboratory on infection-causing strains of certain bacteria, including E. coli and Proteus mirabilis (a common cause of urinary tract infection). The syrup extract was particularly effective when applied in combination with antibiotics. The extract also acted synergistically with antibiotics in destroying resistant communities of bacteria known as biofilms, which are common in difficult-to-treat infections, such as catheter-associated urinary tract infections.
Tufenkji said that the findings suggest a potentially simple and effective approach for reducing antibiotic usage.
The scientists also found that the extract affects the gene expression of the bacteria, by repressing a number of genes linked with antibiotic resistance and virulence.
The study is published in the journal Applied and Environmental Microbiology .
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