Recently, companies started to look for methods providing comprehensive
information of the on-going process in order to assure
an effective control at all stages. The implementation of Fourier-
Transform near-infrared (FT-NIR) probes has been proved to offer
detailed information in real-time in several food processes, allowing
the assurance of meeting the quality parameters to the defined
specifications (Huang, Yu, Xu, & Ying, 2008). Despite being a promising
technique, FT-NIR has several drawbacks to be considered as
well. For instance, the spectral signal generally obtained in the fermentation
of beer is strongly characterised by the overlapping of