<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Wannes Van Hassel</style></author><author><style face="normal" font="default" size="100%">Anne-Catherine Ahn</style></author><author><style face="normal" font="default" size="100%">Bart Huybrechts</style></author><author><style face="normal" font="default" size="100%">Julien Masquelier</style></author><author><style face="normal" font="default" size="100%">Annick Wilmotte</style></author><author><style face="normal" font="default" size="100%">Mirjana Andjelkovic</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">LC-MS/MS Validation and Quantification of Cyanotoxins in Algal Food Supplements from the Belgium Market and Their Molecular Origins</style></title><secondary-title><style face="normal" font="default" size="100%">Toxins</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Food Safety</style></keyword><keyword><style  face="normal" font="default" size="100%">microcystin</style></keyword><keyword><style  face="normal" font="default" size="100%">Microcystis</style></keyword><keyword><style  face="normal" font="default" size="100%">sequencing</style></keyword><keyword><style  face="normal" font="default" size="100%">Tandem Mass Spectrometry; BGAS</style></keyword><keyword><style  face="normal" font="default" size="100%">ultra-high performance liquid chromatography</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2022</style></year><pub-dates><date><style  face="normal" font="default" size="100%">27/07/2022</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">14</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Food supplements are gaining popularity worldwide. However, harmful natural compounds can contaminate these products. In the case of algae-based products, the presence of toxin-producing cyanobacteria may cause health risks. However, data about the prevalence of algal food supplements on the Belgian market and possible contaminations with cyanotoxins are scarce. Therefore, we optimized and validated a method based on Ultra High Performance Liquid Chromatography-Tandem Mass Spectrometry to quantify eight microcystin congeners and nodularin in algal food supplements. Our analytical method was successfully validated and applied on 35 food supplement samples. Nine out of these samples contained microcystin congeners, of which three exceeded 1 µg g−1, a previously proposed guideline value. Additionally, the&amp;nbsp;mcyE&amp;nbsp;gene was amplified and sequenced in ten products to identify the taxon responsible for the toxin production. For seven out of these ten samples, the&amp;nbsp;mcyE&amp;nbsp;gene could be amplified and associated to&amp;nbsp;Microcystis&amp;nbsp;sp. EFSA and posology consumption data for algal-based food supplements were both combined with our toxin prevalence data to establish different toxin exposure scenarios to assess health risks and propose new guideline values.&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">8</style></issue></record></records></xml>