Royal jelly, this milky substance is like mammalian milk and has great nutritional value and immune function and contains a very high longevity factor. The life span of bees is one to six months, and the queen bee can live five to seven years because of the constant consumption of royal jelly. Royal jelly contains more than 26 kinds of fatty acids, 12 of which have been identified, of which 10-hydroxy-2-decenoic acid, the content of which is more than 1.4%.