采前3 种杀菌剂喷施对樱桃番茄采后品质的影响及啶菌噁唑残留检测

以金珠樱桃番茄为试材，研究采前杀菌剂喷施对采后樱桃番茄发病率、质量损失率和食用品质的影响，并测定樱桃番茄果实中啶菌噁唑残留变化。结果表明：采前喷施杀菌剂显著降低了金珠樱桃番茄采后发病率，提高了樱桃番茄果实中VC和可溶性固形物含量，减缓了VC和可溶性固形物含量贮藏期间的损失；但对质量损失率和可滴定酸含量的影响不显著（P＜0.05）。对樱桃番茄采后贮藏保鲜效果最好的杀菌剂为啶菌噁唑，喷施质量浓度为0.4 g/L。采前喷施啶菌噁唑后，樱桃番茄中啶菌噁唑残留在采前和采后均呈下降趋势；且采后樱桃番茄中啶菌噁唑残留下降的速度比采前下降的慢，贮藏温度越低，下降越慢。

Effect of Preharvest Spraying with 3 Fungicides on Quality and SYP-Z048 Residues of Postharvest Cherry Tomato Fruits

“Jinzhu” cherry tomato was used to investigate the effect of preharvest fungicide spraying on the incidence
of diseases, weight loss, eating quality and SYP-Z048 residues of postharvest fruits. The results showed that pre-harvest
fungicide spraying dramatically reduced the disease incidence of postharvest “Jinzhu” cherry tomato, increased the contents
of vitamin C and total soluble solids (TSS) and delayed their loss during postharvest storage, but did not significantly
affect weight loss and the content of TA (P < 0.05). The best pre-harvest fungicide was SYP-Z048 at a concentration of 0.4 g/L.
SYP-Z048 residues revealed a declining trend both in preharvest cherry tomato fruits and in postharvest ones, declining
slower in postharvest fruits. Moreover, lower storage temperature resulted in a slower declining rate.