臭氧对苹果汁中棒曲霉素的降解效果研究

主要研究臭氧对苹果汁中棒曲霉素(Pat)的降解效果及对果汁品质的影响。研究采用臭氧对水和苹果汁中500、250、200、100、50μg/LPat浓度进行5、10、15、20、30min的降解处理。结果表明,臭氧处理对各浓度的Pat都有降解作用,浓度越低,降解效果越好。随着处理时间延长降解效果越好,15min以后降解率不再增加。臭氧处理15min,50μg/L的Pat降解效率最佳,在该条件下,臭氧对苹果汁的pH、VC含量、可溶性固形物和色值均没有明显的影响,因此,臭氧处理是高效、安全、低廉的Pat降解方法。

Effect of ozone treatment on patulin degradation of apple juice

The effect of ozone treatment on Pat degradation in apple juice and the impact on the juice quality were studied.Especially,the effect of ozone on the Pat degradation in the water and apple juice to different concentrations in 500,250,200,100,50μg/L Pat for different time 5,10,15,20,30min were studied.The results showed that ozone could degrade Pat,the lower the Pat concentration was,the better the effect of degradation was.With the degradation time prolonging,the results were better,after 15min the degradation rate would not increase.By ozone treatment 15min,degradation efficiency of apple juice inclusion 50μg/L Pat was the best,and in the experimental conditions,compared with control group,the pH,VC content,soluble solids and color values of apple juice were not significantly changed,so the ozone treatment was an effective,safe,inexpensive way to Pat degradation.