Brandorf A.Z., Ivoilova M.M. Production of royal jelly on honey black bees (Apis Mellifera Mellifera L.) //Biomika. 2016. - Т. 8. - № 2. - С. 69-72.
Showing aspects of the production of royal jelly from dark bees. Royal jelly is efficiently produced in May and June, with the use of a plastic honeycomb K. Jenter. The amount royal jelly in this method is 350 mg or more. Royal jelly dark bees belongs to premium and contains 10 HDA- 2.69%.