Quality Assessment of Honey in Three Different Geographical Areas from Republic of Moldova

Abstract

One of the empirical and image products of the Republic of Moldova is bee honey. Its assortment is due to the variety of landforms, as well as the diversity of flora specific to geographical regions. During the Covid-19 pandemic, domestic consumers had limited access to bee honey. This was caused by the restrictions imposed in order to organize fairs and agricultural markets which are one of the main sources for the purchase of bee products in the Republic of Moldova. At the same time, the analysis of trademarks in supermarkets highlighted the preferences of honey consumption as follows: polyfloral honey—28.57%, lime honey—20.40% and acacia honey—14.28%. In order to evaluate the quality of honey from small producers and highlight the specific characteristics of geographical areas, 60 samples were analyzed that included 3 types of honey: polyflora, sunflower and linden collected from 3 different geographic areas: Soroca area (North), area Ungheni (Center), Stefan Voda area (South). Honey samples were declared harvest of 2020. They were analyzed physico-chemically using methods provided by national and EU standards. The results obtained from the analysis of pollen in honey confirm the botanical origin declared by beekeepers and allowed to highlight the types of pollen specific to each area. Following the determination of qualitative indices: reaction with ethyl alcohol, with resorcinol; insoluble matter, cereal flour, gelatin and starch, it was found that the most inconsistencies were found in linden honey. Some indicators were close to the maximum permissible values specified in regulatory documents. The water content found in the honey samples was quite varied, and ranged from 16.05% ± 0.11% to 19.89% ± 0.13%, but these samples were within the limits of the standards. Total acidity ranged from 6.19 ± 0.13 to 27.20 ± 0.03 which falls within the established norms (up to 50.00 cm3 NaOH solution in (milliequivalents) per 100 g of honey). According to the SIE Lab space, all samples have a yellowish tint, this is indicated by positive values on the b* axis. However, honey samples from the southern region of Moldova showed the presence of greenish pollen, as evidenced by the reduced values on the a* axis. Our research reveals the quality level of honey from three different areas of the Republic of Moldova and the variation of quality parameters due to factors such as geographical region, climatic conditions, botanical origin and handling or storage conditions.