No abstract

Royal jelly (RJ) is the special nutriment of the larva of queen honeybee (Apis mellifera) which is composed of several bioactive substances that include amino acids, proteins, carbohydrates, lipids, mineral salts, and vitamins. The content of RJ varies depending on genotype of the bees according to the flora species and climatic conditions and this affects biological activities of RJ. In recent years, literature has perceived an exponential growth in amount of drug (antibiotic)-resistant pathogenic bacteria. The main reasons of growing antibiotic resistance might be credited to the abuse of the antibiotic usage demonstrating prominence of examining other choices other than the communal antibiotics, such as bee products), to avoid a additional build-up in antibiotic resistance. To our knowledge, chemical content and antimicrobial activity of Bingol RJ (BRJ) has not been investigated to date. Therefore, the purpose of this study was to study composition and antimicrobial activities of BRJ. The results demonstrated that BRJ contains major flavonoids and phenolics such as apigenin, quercetin, naringenin, gallic acid, caffeic acid that contribute antimicrobial and antioxidant properties of BRJ. We have also shown that there are some middle and short chain fatty acids that include Linoleic acid and Propionic acid. BRJ also contain majority of trace elements and mineral. In addition to chemical content, antimicrobial activity of BRJ was also investigated towards pathogens. BRJ showed antimicrobial activity against Salmonella typhimurium (8.64 mm), Escherichia coli (9.1 mm) and Staphylococcus aureus (10.73 mm).

Royal Jelly is a bee product with high protein content is a unique nutrient for the queen honeybee. It leads to a substantial elongation of the lifetime of the queen in comparison to the worker honeybees via anti-inflammatory, anti-oxidant, anti-cancer and anti-microbial properties. Flavonoids naturally have reported to have anticancer activities thanks to their potent antioxidant activity. The antioxidant activity of RJ is attributed to its rich flavonoid content however anti-oxidant activities of the Bingöl RJ has yet to be explored in detail. The goal of the current study was to investigate the antioxidant activities of Bingöl RJ on SH-SY5Y neuroblastoma cells. The results of our study revealed that Bingöl RJ at a concentration of 0.3 mg/ml significantly augmented ROS level in SH-SY5Y cells while 0.5 mg/ml of RJ had almost no effect on ROS levels. The levels of malondialdehyde in SH-SY5Y cells considerably increased in the presence of 0.3 mg/ml RJ while 0.5 mg/ml RJ had no significant impact on MDA levels in SH-SY5Y cells. The results showed that RJ treatment 0.3 mg/ml) significantly lowered the activities of SOD and CAT activity while 0.5 mg/ml of RJ had negligible effect indicating that RJ could protect the cell membranes from radical mediated cell injuries.