Honey bees and bee products are optimal monitors of the environmental quality;experimental beehives were placed in strategic places of Gran Sasso-Monti della Laga Park. Pollen and honey, produced in this protected are...Honey bees and bee products are optimal monitors of the environmental quality;experimental beehives were placed in strategic places of Gran Sasso-Monti della Laga Park. Pollen and honey, produced in this protected area, were analyzed in order to demonstrate their good quality respect to those commercials. Physico-chemical parameters (water content, hydroxymethylfurfural), total flavonoid and phenolic contents and residue analysis (heavy metals, pesticides, tetracycline, sulfathiazole) were carried and evidenced their high quality. Moreover, melissopalynological analysis allowed us to establish a floristic census within the different places of the park. Data show that bee products are good quality, contain high levels of phenolics and flavonoids and show absence of pesticides and low concentration level of heavy metals and antibiotics. Due to this the human impact, even in protected areas, cannot be neglected;similarly environmental contamination by wild livestock was seen in different monitored sites.展开更多
The palynological and physico-chemical characterization of honey was investigated in the Sudano- Guinean zone of Cameroon through the melissopalynology analysis. Results showed that honey with the dark amber color was...The palynological and physico-chemical characterization of honey was investigated in the Sudano- Guinean zone of Cameroon through the melissopalynology analysis. Results showed that honey with the dark amber color was the most represented. Sweet honey with less odour considered as pleasant highly predominate. The pH of honey is low and varies from 3.95 to 5.00;this ranking confirms the hypothesis that honey is from plant through visit of honeybees. The sugar content is very high ranging from 77.93% to 83.13%;the mean value is 78.90% and this value confirms that the honey is floral honey. The density value ranges from 1.39 to 1.43 and does not exceed the average standard (1.39 to 1.44 at 20℃). Water contents correspond to the standards norms. For free acidity, the highest value is 48.68 ± 0.28. There is a low positive correlation (r = 0.2) between free acidity and the pH of honey. Pollen analysis of honeys led to the identification of 41 pollen species belonging to 25 families. The highly represented families are Asteraceae and Myrtaceae. Two thirds of honey is monofloral and characteristics of three dominant species: Nymphaea maculata, Terminalia avicennioides and Syzygium guineense. The pollens of Syzygium guineense are present in all honey samples analysed.展开更多
文摘Honey bees and bee products are optimal monitors of the environmental quality;experimental beehives were placed in strategic places of Gran Sasso-Monti della Laga Park. Pollen and honey, produced in this protected area, were analyzed in order to demonstrate their good quality respect to those commercials. Physico-chemical parameters (water content, hydroxymethylfurfural), total flavonoid and phenolic contents and residue analysis (heavy metals, pesticides, tetracycline, sulfathiazole) were carried and evidenced their high quality. Moreover, melissopalynological analysis allowed us to establish a floristic census within the different places of the park. Data show that bee products are good quality, contain high levels of phenolics and flavonoids and show absence of pesticides and low concentration level of heavy metals and antibiotics. Due to this the human impact, even in protected areas, cannot be neglected;similarly environmental contamination by wild livestock was seen in different monitored sites.
文摘The palynological and physico-chemical characterization of honey was investigated in the Sudano- Guinean zone of Cameroon through the melissopalynology analysis. Results showed that honey with the dark amber color was the most represented. Sweet honey with less odour considered as pleasant highly predominate. The pH of honey is low and varies from 3.95 to 5.00;this ranking confirms the hypothesis that honey is from plant through visit of honeybees. The sugar content is very high ranging from 77.93% to 83.13%;the mean value is 78.90% and this value confirms that the honey is floral honey. The density value ranges from 1.39 to 1.43 and does not exceed the average standard (1.39 to 1.44 at 20℃). Water contents correspond to the standards norms. For free acidity, the highest value is 48.68 ± 0.28. There is a low positive correlation (r = 0.2) between free acidity and the pH of honey. Pollen analysis of honeys led to the identification of 41 pollen species belonging to 25 families. The highly represented families are Asteraceae and Myrtaceae. Two thirds of honey is monofloral and characteristics of three dominant species: Nymphaea maculata, Terminalia avicennioides and Syzygium guineense. The pollens of Syzygium guineense are present in all honey samples analysed.
