See the details of Royal jelly benefits: https://www.royal-jelly-bee.com/2014/10/20/royal-jelly-benefits-part-1/

Royal Jelly is 10 hydroxy-2-decenoic or 10-HDA. It is scientifically proven that 10-HDA acid antagonists on the growth of several types of bacteria, which are often, found in antibacterial activity of fatty acid with six carbon atoms, and will have the maximum effect.