Any winery with access to a UV-vis
spectrophotometer capable of reading 230-900 nm and interfaced to a
Excel software will be able to instantly generate values for
short polymeric pigments, total polymeric pigments, tannins, iron
phenols and non-tannin iron reactive phenols.
Juice, fermenting must, or wine samples require minimal
preparation; clarification if needed (centrifugation or filtration),
and dilution with water. Samples are diluted with water so that
the spectrum is on-scale, which depends on the optical density of the
wine and the
The spectral data is
collected and uploaded into the Skogerson-Boulton Model (Excel
spreadsheet). The predictions appear instantly in the spreadsheet.
Free access to the Skogerson-Boulton Model will
allow wineries to evaluate phenolic parameters in their wines without
prohibitive costs or time delays.
NOTE: The Skogerson-Boulton Model has not been fully
validated. This model
is presented to demonstrate the potential of UV-visible spectra to
predict phenolic parameters in wine. The current model is not
intended as an industry tool for immediate adoption. Wineries or
researchers interested in implementing this technology for the purposes
of validation should contact Roger Boulton
(firstname.lastname@example.org) or Mark Downey (email@example.com).
Skogerson-Boulton Model_Standard_100_v1.3.xls (Excel sheet - 450 kb)