关键词: 三唑磷, 柚子茶, 加工因子

Abstract:

The effect of home processing of pomelo tea on triazopho residues was investigated. The pesticide residues were
strengthened by spraying triazophos at fivefold higher dosage in the field trials and detected using Quick, Easy, Cheap,
Effective, Rugged, Safe (QuEChERS) pretreatment combined with gas chromatography (GC). The results showed that the
triazophos residues were mainly distributed in pomelo peel, in which its concentration was 7.3 times higher than that of
the whole fruit while its residues in flesh accounted for less than 3% of the total residues in the whole fruit. The washing
step decreased the concentration of triazophos in peel by 28.5%. Debittering and sugar-dipping gave significantly reduced
triazophos residues with processing factors (PFs) of 0.83 and 0.60, respectively. The whole process can reduce the residue of
triazophos to 0.18 mg/kg in pomelo tea with a PF value of 0.069.

Key words: triazophos, pomelo tea, processing factor