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- W2606384975 abstract "1,2-Dehydropyrrolizidine alkaloids are known to be toxic to many animals and humans. To provide safety of feeds a method based on gas chromatography-mass spectrometry enabling the determination of a content of 1,2-unsaturated PAs in feed materials was developed. After extraction with aqueous solution of HCl and purification of the extract, 1,2-unsaturated alkaloids are reduced to their common backbone structures and subsequently derivatised with heptafluorobutyric anhydride (HFBA). The method was validated according to SANTE/11945/2015. All received parameters are consistent with the document requirements as recovery of a final compound retronecine derivative was from 81.8% to 94.4% when retrosine was used for spiking and from 72.7% to 85.5% when retrorsine N-oxide was spiked. The repeatability was calculated as relative standards deviation and ranged from 7.5% to 14.4%, for N-oxide was from 7.9% to 15.4%. The reproducibility was in the range from 14.2% to 16.3% and from 17.0% to 18.1% for free base and N-oxide respectively. The limit of quantification was determined as 10 µg kg–1. Good linearity of the method was obtained with coefficient of determination R2 > 0.99. The method was applied to 35 silage and two hay samples analysis." @default.
- W2606384975 created "2017-04-28" @default.
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- W2606384975 date "2017-04-12" @default.
- W2606384975 modified "2023-09-25" @default.
- W2606384975 title "Determination of pyrrolizidine alkaloids in selected feed materials with gas chromatography-mass spectrometry" @default.
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- W2606384975 doi "https://doi.org/10.1080/19440049.2017.1302099" @default.
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