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Toxins 2013, 5(3), 590-604; doi:10.3390/toxins5030590
Article

Detection of Type A Trichothecene Di-Glucosides Produced in Corn by High-Resolution Liquid Chromatography-Orbitrap Mass Spectrometry

1,* , 2
,
1
 and
1
1 National Agriculture and Food Research Organization (NARO), National Food Research Institute, 2-1-12 Kannon-dai, Tsukuba-shi, Ibaraki 305-8642, Japan 2 ThermoFisher Scientific, C-2F, 3-9 Moriya-cho, Yokohama 221-0022, Japan
* Author to whom correspondence should be addressed.
Received: 26 February 2013 / Revised: 19 March 2013 / Accepted: 19 March 2013 / Published: 22 March 2013
(This article belongs to the Special Issue Mycotoxins in Food and Feed)
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Abstract

The existence of di-glucosylated derivative of T-2 toxin in plant (corn powder) was confirmed for the first time in addition to that of HT-2 toxin. These masked mycotoxins (mycotoxin glucosides) were identified as T-2 toxin-di-glucoside (T2GlcGlc) and HT-2 toxin-di-glucoside (HT2GlcGlc) based on accurate mass measurements of characteristic ions and fragmentation patterns using high-resolution liquid chromatography-Orbitrap mass spectrometric (LC-Orbitrap MS) analysis. Although the absolute structure of T2GlcGlc was not clarified, two glucose molecules were suggested to be conjugated at 3-OH position in tandem when considering the structure of T-2 toxin. On the other hand, the specification of the structure seems to be more complicated in the case of HT2GlcGlc, since HT-2 toxin has two possible positions (at 3-OH and 4-OH) to be glusocylated. In addition, 15-monoacetoxyscirpenol-glucoside (MASGlc) was also detected in the identical sample.
Keywords: masked mycotoxin; mycotoxin glucoside; LC-Orbitrap MS; trichothecene; Fusarium; corn masked mycotoxin; mycotoxin glucoside; LC-Orbitrap MS; trichothecene; Fusarium; corn
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Nakagawa, H.; Sakamoto, S.; Sago, Y.; Nagashima, H. Detection of Type A Trichothecene Di-Glucosides Produced in Corn by High-Resolution Liquid Chromatography-Orbitrap Mass Spectrometry. Toxins 2013, 5, 590-604.

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