Quantification of phenolic content during winemaking using a portable non-evasive fluorescence spectrometer

Project number
WW JT 19-01

Project leader
DR Jose-Luis Aleixandre-Tudo

South African Grape and Wine Research Institute, Department of Viticulture and Oenology, Stellenbosch University

Project is co-funded by The Department of Science and Innovation

Start date

Project description
Despite recent advances, the measurement of phenolic compounds during the winemaking process still requires an analytical procedure that involves time, reagents, facilities and dedicated personnel. Due to this fact, the measurement of phenolics is almost absent or limited to a reduced number of occasions in most wineries. The aim of the project is to investigate the suitability of a fluorescence spectrometer for the quantification of phenolic parameters (total anthocyanins, total tannins, total phenols, colour density and polymeric pigments) from outside a fermenting tank, a pipe or a barrel through a quartz crystal. If
successful, phenolic data during the winemaking process will therefore be easily accessible for winemakers in the simplest, fastest and most efficient manner.



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