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研究了不同浓度的气体ClO2在30 min杀菌时间下对葡萄致腐菌青霉的杀灭效果。实验结果表明,随气体ClO2浓度(5、10、15 mg/m3)增加杀菌率增加(分别为2.62、3.05 log和3.21 log);研究了经气体ClO2作用后葡萄中Vc、还原糖和可滴定酸含量变化规律。结果表明:当气体ClO2浓度为5、10 mg/m3时,葡萄中Vc的含量随着作用时间(10~60 min)的延长,出现先减少后上升的变化趋势;当气体ClO2浓度为15 mg/m3时,葡萄中Vc和还原糖的含量随着作用时间(10~60min)的延长呈上升趋势;可滴定酸的含量随ClO2浓度增加和作用时间延长出现上升趋势。
The effect of different concentrations of ClO2 on Penicillium impatiens under 30 min sterilization time was studied. The experimental results showed that the bactericidal rate increased with increasing concentrations of ClO2 (5,10 and 15 mg / m3) (2.62, 3.05 and 3.21 log, respectively); Vc, reducing sugar and titratable Acid content changes. The results showed that when the concentration of ClO2 was 5 and 10 mg / m3, the content of Vc in grape increased with the increase of the action time (10 ~ 60 min), and then decreased first and then increased. When the concentration of ClO2 was 15 mg / m3, the content of Vc and reducing sugar in grape increased with the extension of time (10 ~ 60min). The content of titratable acid increased with the increase of ClO2 concentration and the extension of time.