Manuka honey is known for its unique antibacterial activity. which is due to methylglyoxal (MGO). After establishing a suitable assay for measuring the bacteriostatic effect in a liquid culture with a time dependent and continuous measurement of the optical density. we were able to show that honey differs in its growth retardingeffect on Bacillus subtilis despite the same content of MGO. https://yeswellneses.shop/product-category/indole-3-carbinol/