Media type: E-Article Title: Measurement of glucosinolates in rapeseeds Contributor: Wathelet, Jean‐Paul; Marlier, Michel; Severin, Michel; Boenke, Achim; Wagstaffe, Peter John Published: Wiley, 1995 Published in: Natural Toxins, 3 (1995) 4, Seite 299-304 Language: English DOI: 10.1002/nt.2620030425 ISSN: 1056-9014; 1522-7189 Origination: Footnote: Description: AbstractSeveral ring tests have been organized by the International Organisation for Standardization (ISO) and the Measurement and Testing Programme (BCR) for improving glucosinolate methods. Finally, HPLC of desulphoglucosinolates is recommended by ISO, the European Committee for Standardization (CEN), and the European Commission (EC) as the official method. X‐ray fluorescence has also become particularly common for fast analysis.After checking stabilityof intact glucosinolates in whole rapeseeds, the BCR has three reference materials (CRM 366, CRM 190, CRM 367) available, certified for their total glucosinolate and sulphur contents.Currently, the Measurement and Testing Programme is supporting a research project concerning the stability of desulphoglucosinolates and intact glucosinolates extracts. At the present time, best results are observed with lyophilized extracts sealed in brown glass ampoules and stored at −18°C. © 1995 Wiley‐Liss, Inc.