This part of ISO 9167 specifies a rapid method for the
determination of the total glucosinolate content of
rapeseed using X-ray fluorescence spectrometry
(XRF).
lt is applicable to seeds with a normal Protein content
from 19 % to 23 %. For seeds with a Protein content
outside this range, account should be taken of the
total Protein content in the calculation of the total
glucosinolate content (see reference [4]).
NOTES
1 ISO 9167-1 specifies a method using high-performance
liquid chromatography (HPLC) which enables the content
of different glucosinolates to be determined individually.
2 When applied to immature seed or to seed that has
been badly stored, for example under damp and warm
conditions, the results obtained by the XRF method and by
the HPLC method (ISO 9167-1) may not agree as closely as
when applied to normal rapeseed. The HPLC method should
be taken as the reference method.