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以毛木耳为试材,采用平板打孔法抑菌试验和菌丝生长抑制试验,以克霉灵为阳性对照,清水为阴性对照,研究了寡聚酸碘对青霉和黄曲霉的防治效果。结果表明:不同浓度的寡聚酸碘对青霉和黄曲霉孢子萌发有不同程度的抑制作用,寡聚酸碘10~40倍液对青霉的抑菌圈直径在8.40~13.14mm、对黄曲霉的抑菌圈直径在8.50~17.30mm,且浓度梯度间均有显著性差异;菌丝生长抑制试验表明,寡聚酸碘10~40倍液对青霉、黄曲霉菌丝的生长均有抑制作用,而且随着稀释倍数的增加,抑制效果降低。40倍液对青霉的抑制率达到了51.48%,略低于阳性对照克霉灵(52.96%);对黄曲霉的抑制率达到了40.57%,略低于阳性对照克霉灵(42.32%),但是从安全、经济角度综合考虑,寡聚酸碘的推荐使用浓度是40倍。
With the fungus as the test material, the antibacterial test and the mycelial growth inhibition test were carried out by the plate puncturing method. The control effect of the oligo-acid iodine on Penicillium and Aspergillus flavus was studied with the positive control of Ketjenin and the fresh water as the negative control . The results showed that different concentrations of iodine oligosaccharides inhibited the spore germination of Penicillium and Aspergillus flavus to some extent. The inhibition zone diameter of 10 ~ 40 times of oligo-iodine to Penicillium was 8.40 ~ 13.14mm, Aspergillus inhibition zone diameter of 8.50 ~ 17.30mm, and the concentration gradient between the significant differences; mycelial growth inhibition test showed that oligo-acid iodine 10 to 40 times the growth of Penicillium and Aspergillus flavus were Inhibitory effect, and with the dilution factor increases, the inhibitory effect decreases. The inhibitory rate of 40 times against Penicillium was 51.48%, slightly lower than that of the positive control Ketjenbug (52.96%). The inhibition rate to Aspergillus flavus reached 40.57%, slightly lower than that of the positive control Ketjenblazine (42.32% , But from a safe and economic point of view, the recommended concentration of oligo acid iodine is 40 times.