Antibacterial effect of Royal gelly, mix from Royal jelly and rape honey (1:100), rape and oak honeydew honeys against Escherichia coli (ATCC 25922)

Abstract

The Royal jelly (RJ), RJ and rape honey (HJ), rape (RH) and oak honeydew honey (HH) at concentrations of 10 to 45% were contaminated with 50 to 100 CFU/ml Escherichia coli ATCC 25922. After plating onto ChromoCult® TBX agar up to 30 min from contamination and after enrichment in Tryptic soy broth (TSB) at 37°C for 24 h, it revealed no visible colonies. These concentrations were defined as real bactericidal concentrations (RBC). Judging by results from spectrophotometric method, percent of inhibition and pH, it was observed, follow succession from drop of antibacterial activity for tested substances that RJ > HH > HJ > RH.

Royal Jelly: Chemistry, Storage and Bioactivities

“…Functional properties RJ is assumed to bring balance in the human body, probably due to the adequate balance and proportion between its components (Dinkov & Stoyanchev, 2014). The functional properties of RJ, how it affects health and the results of recent research are classified and described in the next sections.…”

“…Allergic side effects RJ may cause allergic reactions, asthma and even fatal anaphylaxis in humans, so it remains unavailable in most countries (Dinkov & Stoyanchev, 2014). Oral administration may cause such lesssevere allergic reactions as atopies, light gastrointestinal problems and such more severe as asthma, anaphylactic shock, intestinal bleeding and even death (Pavel et al, 2011).…”

“…RJ is not recommended for patients with bronchial asthma during an attack. RJ causes stronger allergies than other such bee products as pollen, honey, venom (Dinkov & Stoyanchev, 2014). People with bee products allergy such as honey, pollen, venom should not intake RJ orally (Majtan et al, 2006).…”