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Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment

Differentiation of coccidiostats-containing feed additives by mid and near infrared microscopy.


PMID 26248030

Abstract

Coccidiostats belong to the group of feed additives authorised within the European Union exclusively for specific preparations. These preparations not only contain one or more coccidiostats as active substance(s) but also various ingredients such as the carrier, which are included in the European legislation authorising the product. In order to allow the full traceability of the use of feed additives and to check for compliance with legal provisions, there is a strong need for analytical methods that enable the rapid characterisation of these products. This paper describes the applicability of non-destructive techniques such as mid infrared (MIR) and near infrared (NIR) microscopy supported by multivariate analysis for the characterisation of coccidiostats-containing feed additives. The application of these methods demonstrated that different feed additives could be distinguished from each other even when containing the same active substance. The use of chemometrics turned out to be crucial especially in cases where the differentiation of spectra by visual inspection was very difficult.

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