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Honey is a natural substance produced by honeybees and flower nectar. It has complex compounds such as carbohydrates (fructose and glucose), phenols, organic acids, amino acids, proteins, minerals, vitamins and lipids. Organophosphorus pesticides, as diazinon, are used more than other pesticides due to their effect on a wide range of pests and also cheap price. It is noteworthy that diazinon is in category 2 in the classification of the World Health Organization and is considered as a relatively hazardous pesticide. In this regard, in the present study, the amount of residue of diazinon in honey produced in Damavand region was measured with the aim of providing the health of consumers and preparing the ground for qualitative control of this product. The honey samples used in this study were prepared from six areas of Ayeneh Varzan, Aro, Havir, Mosha, Tar Lake and Damavand in June and September. Then, the separation and detection of toxin were done by HPLC. According to the results, the residue of toxin was observed in all sampling areas so that in some areas the amount of residual was higher than the maximum residue level (MRL). Also, the residue in June in all samples was more than the samples harvested in September. In this regard, the highest amount of residue was measured in June in Ayeneh Varzan (0.03919 ppm) and its lowest amount was measured in September in Havir region with the amount of 0.1714 ppm.

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Abstract
Honey is a supersaturated solution that contains fructose and glucose. Honey also contains minerals, proteins, amino acids, enzymes and vitamins. There is a wide range of partial compounds in honey that many of them have antioxidant properties. These compounds include phenolic acids and flavonoids, some enzymes (glucose oxidase, catalase) and amino acids. Fluvalinate is an insecticide, acaricide broad spectrum of pyrethroids products that can be used in bee hives, gardens, greenhouses and disinfection of cuttings. In this regard, in the present study, the amount of residue of fluvalinate  in honey produced in Damavand region was measured with the aim of providing the health of consumers and preparing the ground for qualitative control of this product. The honey samples used in this study were prepared from six areas of Ayeneh Varzan, Aro, Havir, Mosha, Tar Lake and Damavand in June and September. The separation and detection of toxin were done by GC-MASS. Based on the results, the residue in June in all samples was more than the samples harvested in September. In this regard, the highest amount of residue was measured in June in Ayeneh Varzan (0.077 ppm) and the lowest was measured in September in Mosha (0.021 ppm).

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The chemical constituents of n-hexane extract of Mentha arvensis (wild mint) native to Meshginshahr and Namin region, and the antimicrobial effect of the extract against Pseudomonas aeruginosa (ATCC 27853) and Bacillus cereus (ATCC 11778) were studied in this research using broth and agar dilution methods (assessment of minimum inhibitory concentration, MIC, and minimum bactericidal concentration, MBC) and disk diffusion method. The results showed that cis-piperitone epoxide, piperitenone oxide and pulegone were the main components of the extracts. In addition, the MICs and MBCs of the n-hexane extracts of the wild mint in the various regions against P. aeruginosa were similar (20 mg/mL). Moreover, the MIC and MBC of the n-hexane extracts of the wild mint in Meshginshahr against B. cereus were 5 and 10 μg/mL, respectively, whereas the corresponding values against B. cereus were similar (10 mg/mL). Furthermore, the results of the disk diffusion test interpretation revealed that the inhibition zone diameters (IZDs) of the n-hexane extract in the samples obtained from Meshginshahr against both bacterial species were larger than those of the samples taken from Namin.