The demand for monofloral, original, and special (functional) kinds of honey, or those with geographical indication, is forecast. At the same time, there is a need to improve the methods for determining the botanical and geographical origin of honey. The purpose of the research was to select and apply a variety of techniques for identifying the botanical origin of honey for its correspondence to acacia species. Samples of honey from the Kyiv, Odesa, and Dnipro regions extracted in the spring and summer period were used in the research. Organoleptic, physicochemical, NMR spectrometry, and advanced melissopalynology methods were applied. The tests were carried out at the laboratories of the Department of Certification and Standardization of Agricultural Products, NULES, Ukraine; the Ukrainian Laboratory of Quality and Safety of Agricultural Products; and the Bruker BioSpin GmbH company (Germany). According to the research results, the requirements for acacia honey were met by the organoleptic method for samples B1 and B2; by the physicochemical method for A0 and A2; by NMR spectroscopy for not a single sample, all being assessed as polyfloral; and by pollen analysis for B1 and B2. The conducted studies confirm the need for a comprehensive approach to the identification of the botanical origin of honey for its conformity to acacia species. There is a need to review the physicochemical indicators for the compliance of honey with the acacia species obtained in Ukraine. After all, even the modern NMR spectrometry technique indicated that the specially fabricated sample that did not contain acacia pollen grains was acacia honey. Identification of the botanical origin of monofloral honey, in particular acacia, should be carried out in the following sequence: pollen analysis (by dominant pollen grains), safety (presence of antibiotics, pesticides), physicochemical parameters according to international requirements, organoleptic parameters.
The aim of the research was to investigate the flight activity of bee colonies during Acer spp. flowering, as a source of monofloral bee pollen. To achieve this goal the following tasks were set: to investigate the intensity of flight of bees during flowering of maples; to estimate the condition of bee colonies by the strength and quantity of brood after feeding with the elements of training for feed; to establish the pollen productivity of bee colonies during Acer spp. flowering. The common zootechnical methods of forming the analogue groups were used (control -standard maintenance; experiment -feeding with maple pollen); pollen productivity of bee colonies was evaluated by the amount of products received; the botanical origin of the bee pollen was determined by pollen analysis. It was found that the flight intensity of bees of the experimental group was higher than the control during the first accounting by an average of 38.5 %, the second by 30.0 % and the third by 19.4 %. According to the number of open and sealed broods, the experimental colonies outweighed the controls by 0.5 and 1 honeycomb at the first count and by 0.5 -at the second; by the amount of forage by 0.5 honeycomb at the first count and by 1 -at the second. The experimental colonies were found to have higher pollen productivity. The daily volume of yields in the experimental colonies ranged from 64 to 97 g with a maximum coefficient of variation of 9.6 %, and in controls -from 90 to 135 g, with a variation of 14.4 %. This suggests that the more flying bees are there in a colony, the more different work they do (collecting nectar, pollen, propolis, water), which can affect productivity over time. It has been established that stimulating feeding and training of bees have a positive effect on the increase in the pollen productivity of colonies. The average daily pollen productivity of the bee colonies of the experimental group was 104.3 g, and the control one -79.3 g, which is less by 24 %. The weight of the raw pollen received was 2.7 kg from the experimental group and 2.1 kg from the control group, which is 22.2 % less. The difference in weight of the total collection was also caused by the larger mass of a single pollen clump out of the monofloral gathering, which outweighed the polyfloral (control group) by 28 %. Therefore, stimulating feeding of bee colonies with sugar dough with maple pollen increases their pollen productivity on harvesting monofloral bee pollen during Acer spp. flowering.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.