کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1184415 | 1492110 | 2015 | 6 صفحه PDF | دانلود رایگان |
• A monoclonal antibody 2D3G5 specific for ustiloxin A was produced.
• An icELISA for detection of ustiloxin A in rice samples was developed.
• ELISA data were highly correlated with those of HPLC.
Ustiloxin A, a cyclopeptide mycotoxin, was isolated from the pathogenic fungus Villosiclava virens that causes rice false smut, a worldwide devastating rice disease. A monoclonal antibody (mAb) 2D3G5 was generated with ustiloxin A–bovine serum albumin conjugate. A highly sensitive and specific indirect competitive enzyme-linked immunosorbent assay (icELISA) was then developed. It possessed a median inhibition concentration (IC50) of 13.8 ng/mL and a working range of 2.8–72 ng/mL. The mAb 2D3G5 recognized ustiloxin B with the cross-reactivity as 4%. The average recoveries of ustiloxin A from rice false smut balls and peeled rice samples ranged from 92% to 117% and from 92% to 107%, respectively. Comparison of the concentrations of ustiloxin A in rice false smut balls detected by both icELISA and high performance liquid chromatography–photodiode array detection indicated that the developed icELISA was suitable for detection of ustiloxin A in rice food and feed samples.
Journal: Food Chemistry - Volume 181, 15 August 2015, Pages 140–145