FT-NIR spectroscopy is a fast and economic method to assess the quality of deep-frying oil with regards to its key parameters describing all aspects of the fat degradation.
This was acknowledged by the DGF who issued the Standard Method „FT-NIR Spectroscopy: Screening analysis of used frying fats and oils for rapid determination of polar compounds, polymerized triacylglycerols, acid value and anisidine value [DGF C‐VI 21a (13)].“ in September 2013.