摘要
运用超高效液相色谱串联四级杆/飞行时间质谱(UPLC-Q/TOF-MS)识别和确定脱氧雪腐镰刀菌烯醇(Deoxynialenol,DON)在大鼠肠道菌群体外代谢模型中的代谢产物,同时运用高效液相色谱串联三重四级杆质谱定量分析DON含量变化,比较各段肠管中厌氧菌群的代谢能力。结果表明,DON不能被大鼠小肠菌群代谢,而能被其大肠菌群代谢为脱环氧代谢产物脱环氧-脱氧雪腐镰刀菌烯醇(Deepoxy-deoxynialenol,DOM)。定量测定结果显示,大肠中盲肠菌群代谢能力最强。
Deoxynivalenol（DON） is a prevalent trichothecene contaminant,which is harmful to human and animal health.In this study,we identified the metabolites of DON produced by intestinal microflora of rats using ultra performance liquid chromatography/quadrupole time-of-flight tandem mass spectrometry（UPLC-Q/TOF-MS）.By quantitative analysis of DON using triple quadrupole mass spectrometer,we found that the transformation capability of caecum was much stronger than that of colon and rectum,and no metabolite was found in the microflora culture media of small intestine after 24 h incubation at 37 ℃ in anaerobic condition.In microflora culture media of large intestine,only de-epoxy-DON（DOM） was found,and transformation capability of caecum was much stronger than other sections of large intestine.
出处
《分析化学》
SCIE
CAS
CSCD
北大核心
2012年第1期119-123,共5页
Chinese Journal of Analytical Chemistry
基金
"973"国家重点基础研究发展计划课题(No.2009CB118801)资助
关键词
体外代谢
肠道菌
大鼠
脱氧雪腐镰刀菌烯醇
超高效液相色谱串联四级杆/飞行时间质谱
Transformation in vitro
Intestinal microflora
Rats
Deoxynivalenol
Ultra performance liquid chromatography/quadrupole time of flight tandem mass spectrometry
