关键词: 粉唑醇, 选择性降解, 草莓酒, 超高效合相色谱-串联质谱

Abstract: The purpose of this work was to study the enantioselective behavior of chiral pesticide flutriafol during strawberry growth and winemaking. Strawberries were sprayed with flutriafol before harvest to determine the effect of wine processing on flutriafol residues. The enantiomers of flutriafol were separated and determined by ultra-performance convergence chromatography-tandem mass spectrometry (UPCC-MS/MS). The results indicated that no obvious stereoselective behavior was observed for flutriafol enantiomers during strawberry growth. The half-lives of (-)-R-flutriafol and (+)-S-flutriafol were 13.80 and 13.60 d, respectively. (+)-S-Flutriafol degraded faster than (-)-R-flutriafol during the wine fermentation process. The half-lives of (-)-R-flutriafol and (+)-S-flutriafol were 38.06 and 29.90 d for the washed group, and 29.31 and 22.14 d for the unwashed group, respectively.

Key words: flutriafol, stereoselective behavior, strawberry wine, ultra performance convergence chromatography-tandem mass spectrometry (UPCC-MS/MS)