PMID- 38254615 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240128 IS - 2304-8158 (Print) IS - 2304-8158 (Electronic) IS - 2304-8158 (Linking) VI - 13 IP - 2 DP - 2024 Jan 18 TI - Dissipation, Residue and Human Dietary Risk Assessment of Pyraclostrobin and Cyazofamid in Grapes Using an HPLC-UV Detector. LID - 10.3390/foods13020314 [doi] LID - 314 AB - Pyraclostrobin is a new broad-spectrum methoxyacrylic acid fungicide. Cyazofamid is a new selective foliar spray acaricide. Here, we studied the degradation rate and final residues of pyraclostrobin and cyazofamid in grape and evaluated their dietary risk to consumers. The average recoveries of pyraclostrobin ether ester, cyazofamid and cyazofamid metabolite (CCIM) in grapes were 84-94%, 92-98% and 99-104%, respectively. The relative standard deviations (RSDs) were 6.0-20.3%, 2.4-10.5% and 1.3-4.0%, respectively, and the LOQs were all 0.05 mg/kg. The digestion dynamics of the experimental sites were in accordance with the first-order kinetic equation. The degradation half-lives of pyraclostrobin ether ester and cyazofamid were 17.8 d-28.9 d and 4.3 d-7.8 d, respectively. The final residues of pyraclostrobin ether ester, cyazofamid and CCIM in grapes were <0.05-1.88 mg/kg, <0.05-0.31 mg/kg and <0.05-0.47 mg/kg, respectively. Using probability models, the total chronic risk values for pyraclostrobin and cyazofamid were calculated to be 0.112-189.617% and 0.021-1.714%, respectively. The results of the contribution analysis indicate that pyraclostrobin poses a much greater risk to Chinese consumers than cyazofamid, especially to children and adolescents, who have a significantly greater risk than adults. This suggests that more consideration should be given to the cumulative risk of compounds for vulnerable groups in the future. FAU - Zhao, Peiying AU - Zhao P AD - State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China. FAU - Liu, Rong AU - Liu R AUID- ORCID: 0000-0001-7990-8051 AD - Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China. FAU - Yuan, Longfei AU - Yuan L AUID- ORCID: 0000-0001-8993-3285 AD - State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China. LA - eng GR - 31501667/National Natural Science Foundation of China/ GR - 2016YFD0201207/National Key Research and Development Program of China/ PT - Journal Article DEP - 20240118 PL - Switzerland TA - Foods JT - Foods (Basel, Switzerland) JID - 101670569 PMC - PMC10814842 OTO - NOTNLM OT - CCIM OT - cyazofamid OT - dietary risk assessment OT - dissipation behavior OT - grape OT - pyraclostrobin OT - residue COIS- The authors declare no conflicts of interest. EDAT- 2024/01/23 06:43 MHDA- 2024/01/23 06:44 PMCR- 2024/01/18 CRDT- 2024/01/23 01:03 PHST- 2023/11/30 00:00 [received] PHST- 2024/01/12 00:00 [revised] PHST- 2024/01/13 00:00 [accepted] PHST- 2024/01/23 06:44 [medline] PHST- 2024/01/23 06:43 [pubmed] PHST- 2024/01/23 01:03 [entrez] PHST- 2024/01/18 00:00 [pmc-release] AID - foods13020314 [pii] AID - foods-13-00314 [pii] AID - 10.3390/foods13020314 [doi] PST - epublish SO - Foods. 2024 Jan 18;13(2):314. doi: 10.3390/foods13020314.