FOOD. Science. Technology. Quality

Food. SCIENCE. Technology. Quality

Food. Science. TECHNOLOGY. Quality

Food. Science. Technology. QUALITY




Novel method to produce honey powders and their physical properties


The objective of the research study was to determine the possibility of reducing the content of monosaccharides in honey solutions through alcoholic fermentation in order to increase the content of honey compounds in honey powders produced using a spray drying method, and, next, to determine physical properties of those powders. Honey was diluted with water and a 30 % extract was produced; then, the solution underwent alcoholic fermentation. As soon as the desired concentration of the apparent extract (30 and 27 %) was reached, the fermented honey was diluted with water to make the content of dry mater be 20 %; next, it was concentrated by a gum Arabic and a tapioca starch (at 2 : 1 ratio) to a concentration level of 33 % of dry mater, and, finally, spray dried. Some selected physicochemical properties were analyzed of powders taken from a receiver and a chamber of spray dryer. In the powders produced, the following was determined: water content, water activity, bulk density, particle density, colour, and particle morphology. Owing to reducing the content of monosaccharides through alcoholic fermentation, a honey powder was produced, in which ca. 50 % of dry mass were honey compounds. Statistically significant differences were found among the colour and particle sizes of powders taken from different points in the dryer. The powders taken from the chamber were characterized by a larger particle size and a more intense colour. The apparent extract of fermented honey had no significant effect on the analyzed physical properties of the powders except for the particle density, which was larger in the case of the product produced from the solution with a lower extract.


honeys, spray drying, morphology of powder particles, powder density, colour