comparison microbial and physicochemical characterization of different origin plant honeys in esfahan province

honey is an important product of honey bee that rich in carbohydrate. compounds of honey in each area are different due to weather conditions, type of plants, bee species and management methods. honey quality and effective factors on it can be determined by microbial and physicochemical tests in each area and the producers of fine honey will be supported. in this way, the research has been done on 44 honey samples to consider the type of plants that bees generally feed on it. the results showed that samples have good quality and type of plants influence on honey purity. range of humidity was seen between 15/64- 18.66 percent in astragalus-lucern and astragalus samples. fructose and glucose had been formed between 60-80% of honey carbohydrates and maximum ratio of them is reported in lotus honey (1.7). minimum amount of hydroxyl methyl furfural was in dill honey, minimum amount of free acidity and greatest amount diastase activity were seen in coriander honey (19/84). these results indicate that the samples of honey were freshness and suitable storage & processing methods have had after production. sulfite - reducing bacteria were not seen in honeys and numbers of yeast and fungi were < 102 cfu/g that these conform to 92 iranian standards, which numbers of yeasts and fungi, are maximum 102 cfu/g and sulfite- reducing bacteria are zero.