Transfer Assessment of Carbendazim Residues from Rape Flowers to Apicultural Products

Abstract

Carbendazim is usually used to control the Sclerotinia sclerotiorum of rapes during the flowering period. This paper presents a study on transfer assessment of carbendazim residues from rape flowers to apicultural products. In the field trials, the rapes were sprayed with carbendazim on standard dosage. Bees produced apicultural products (bee pollen, honey, and royal jelly) from sprayed rapes. Apicultural products were collected on a regular basis. Carbendazim residues were extracted from bee pollen, honey, and royal jelly, respectively. HPLC/ESI-MS/MS method was developed and partially validated to identify and quantify carbendazim residues. The limits of quantification in pollen, honey, and royal jelly were 0.01 mg/kg. Mathematical curve fitting was carried out on the basis of transfer assessment of carbendazim residues from rape flowers to apicultural products. The respective carbendazim residues were 1.10 ± 0.03 mg/kg in pollen on 18th day, 0.032 ± 0.001 mg/kg in honey on 24th day, and 0.077 ± 0.002 mg/kg in royal jelly on 22nd day. Transfer assessment and mathematical curve fitting of carbendazim residues from rape flowers to apicultural products show carbendazim diminished over spraying time. The gap of carbendazim residues between pollen and honey is decreased with time. The carbendazim residues in pollen are 10 times higher than that of honey and jelly.

Transfer and Metabolism of Triadimefon Residues from Rape Flowers to Apicultural Products

“…Field trials were designed the same as our former studies [ 20 ]. Under organic farming standards, rape of Zheshuang 72 double low Brassica was cultivated averagely in four GP 622 single-span greenhouses numbered from P 1 to P 4 .…”

“…As State Key Laboratory for Pesticide Residue Detection of the Ministry of Agriculture, we are accumulating experiences in agriculture and food safety and attempting to build up entire proceeding research systems from the farmland to the dining table [ 14 , 15 , 20 – 22 ]. We have attempted to provide a comprehensive risk assessment for different pesticide residues found in pollen, honey, and royal jelly.…”

“…We have attempted to provide a comprehensive risk assessment for different pesticide residues found in pollen, honey, and royal jelly. We have validated preparation and extraction procedures in the laboratory and designed field trials to investigate the transfer assessment of carbendazim residues from rape flowers to apicultural products [ 20 ]. Carbendazim is a benzimidazole fungicide, while triadimefon is a chloroarene fungicide used in agriculture to control various fungal diseases.…”

Degradation of triadimefon and residue levels of metabolite triadimenol: tracing rapeseed from harvesting and storage to household oil processing

“…In food‐safety issues, it is necessary to trace the whole course from harvesting and storage to processing, to ensure healthy and safe catering for consumers. Transfer assessment and mathematical curve fitting of pesticide residues, from rapeseed to apicultural products, have shown that pesticide residues diminish over spraying time . The optimum harvest time for agricultural products is a certain number of days after spraying pesticide.…”

“…Transfer assessment and mathematical curve fitting of pesticide residues, from rapeseed to apicultural products, have shown that pesticide residues diminish over spraying time. 12,13 The optimum harvest time for agricultural products is a certain number of days after spraying pesticide. Storage conditions are related to residue levels of post-harvest agricultural products.…”