UNE EN 17992:2025
Food authenticity - Determination of the sum of 16-O-methylcafestol, 16-O-Methylkahweol and their derivatives in roasted coffee by ¹H-qNMR
Autenticidad de los alimentos. Determinación de la suma de 16-O-metil-cafestol, 16-O-metil-kahweol y de sus productos derivados en café tostado mediante ¹H-RMNq.
| Standard number: | UNE EN 17992:2025 |
| Pages: | 28 |
| Released: | 2025-07-02 |
| Status: | Standard |
| Pages (Spanish): | 32 |
UNE EN 17992:2025
This document specifies a method for the determination of soluble 16-O-Methylcafestol and 16-O-Methyl kahweol content (the sum of free forms and derivatives, e.g. fatty acid esters, henceforth abbreviated as 16-OMD = diterpenes ) in roasted coffee (beans or ground), using quantitative proton nuclear magnetic resonance spectroscopy (1H-qNMR). If complying with the experimental parameters described below, this test procedure has been proven for the following concentration range: 16-OMD: 20 mg/kg to 2 000 mg/kg. The concentration range can be expanded by suitable changes of the experimental parameters, e.g. a different weighed portion of ground coffee or the accumulation of more NMR-transients.