新型生物防霉剂纳他霉素在液体饲料中的应用  

Application of new type of antiseptic natamycin in liquid feed

作　　者：雷德柱[1] 黄永健[1] 

机构地区：[1]广州大学生命科学学院,广东广州510006

出　　处：《食品与机械》2015年第4期62-64,280,共4页Food and Machinery

基　　金：广东省科技计划项目(编号:2011B020305008)

摘　　要：研究新型生物防霉剂纳他霉素对黑曲霉（Aspergillus niger）、雪白根霉（Rhizopus niveus）、总状毛霉（Mucor corticolus）、灰绿青霉（Penicillium glaucum）等常见霉菌的抑制作用,并用化学防霉剂双乙酸钠与其作复配试验。结果表明：纳他霉素单独使用最低抑菌浓度为3~6mg/L,与双乙酸钠复配时抑菌浓度比例为4 mg/L∶3g/L。采用体积浓度为10,20,30mg/L的纳他霉素对两种供试液体饲料进行破坏性存放防霉试验,平板计数统计结果表明其防霉效果差异不大。肉眼观察10mg/L纳他霉素对奥利康宠物饲料和珊瑚成长粮破坏性存放18d和24d的抑菌率为100%,计数统计30d后的抑菌率分别为96.3%和94.3%。Inhibition effects were investigated for new type of antisep- tic natamycin and the combination of natamycin and sodium diacetate on common mildews, including Aspergillus niger, Rhizopus niveus , Mucor corticolus, Penicilliurn glaucurn. The results indicated that the minimal inhibition concentration of natamycin was 3 - 6 mg/L, while the optimized inhibition ratio was 4 mg/L to 3 g/L in the com- bination. Destructive storage test was also conducted at 10, 20 and 30 mg/L respectively in this paper, and little difference were ob- served according to the result by plate counting. 100% inhibition effect of natamycin at 10 mg/L could be expected to last for 18 days in liquid pet feed and 24 days in liquid coral feed respectively by eyes observation, while 96.3% and 94.3% inhibition effect of natamycin were observed at the same concentration after 30 days by plate count- ing. According to the results, the tion was not able to 100% inhibit only natamycin at the tested condi fungi in feed within 30 days.

关 键 词：生物防霉剂 纳他霉素 双乙酸钠 防霉 液体饲料 破坏性试验 

分 类 号：S816[农业科学—饲料科学]