First physicochemical analysis of stingless bee honey from Uganda

Abstract

Following years of its exploitation from only wild colonies, the stingless bee (Meliponula bocandei Spinola, 1853) was recently domesticated in Uganda. Products currently harvested by the beekeepers are honey and propolis. Studies from other countries have shown that stingless bees produce honey that is distinct in physicochemical properties. Therefore, in an effort to lay a foundation for the development of quality standards for stingless bee honey in Uganda, we collected M. bocandei honey from the Western Highlands and Lake Victoria Crescent agroecological zones. A selected set of physicochemical properties (moisture content, viscosity, water activity, electrical conductivity and HMF) of the honey were determined. Results reveal the following means of the physicochemical properties: moisture content (26.45 ± 3.9%), viscosity (38.32 ± 2.25 Pa.s), water activity (0.71 ± 0.04%), electrical conductivity (0.229 ± 86.91 mS/cm), pH (4.15 ± 0.68), and HMF (5.42 ± 4.78 mg kg−1), The low mean HMF reveals that stingless bee honey from these two agroecological zones is of good quality. Overall, the mean values of the physicochemical parameters measured are within the figures in the East African Community standards for stingless bee honey. We recommend investigations to establish the diversity of forage plant resources used by the stingless bee M. bocandei in order to boost meliponiculture.