摘要
从400株芽孢菌中筛选到对玉米赤霉烯酮(ZEN)有较好清除作用的两株芽孢杆菌373-2和411-1,分别与玉米赤霉烯酮(15μg/m L)共培养8 h和6 h后,将其完全清除。通过16S rDNA序列分析鉴定,373-2和411-1分别为一株新种芽孢杆菌和枯草芽孢杆菌(Bacillus subtilis)。对两株菌的玉米赤霉烯酮清除机理进行初步分析,结果表明,清除作用主要源自菌株胞外酶的降解活性。
Two Bacillus strains 373- 2 and 411- 1 showing good performance in zearalenone elimination,were screened from 400 strains of Bacillus. Zearalenone( 15 μg / m L) could be eliminated completely after co- culture with the screened strains for 8 and 6 hours,respectively. Strain 373- 2 and 411- 1 were identified as a new species of Bacillus and Bacillus subtilis based on 16 S r DNA sequence analysis. The mechanism of zearalenone elimination was also preliminarily investigated,and the result demonstrated that the main activity of zearalenone scavenging was due to the extracellular enzyme.
出处
《粮油食品科技》
2016年第3期86-91,共6页
Science and Technology of Cereals,Oils and Foods
基金
国家自然科学基金(31302007)
"十二五"农村领域国家科技计划课题(2011BAD26B002-5)