DOI: 10.1016/j.foodres.2018.11.012
Abstract:
The effect of mannoproteins on the evolution of rosé sparkling wines during over-lees aging was investigated on the basis of the chemical characterization of polyphenols, organic acids, macro-and microelements using a combined analytical approach. Variations on these constituents were assessed using Raman and near-infrared spectroscopy. During the biological aging, caffeic acid, catechin, gallic acid and malvidin-3-O-glucoside were the most abundant polyphenolics in the rosé wines. The phenolic compound tyrosol, a fermentation...
Excerpt:
Near - infrared spectra were collected using an FT - NIR spectrometer Frontier 400 (Perkin Elmer, USA) and the spectrum acquisition was performed from 9090.91 cm - 1 to 4000.00 cm - 1 . While the Raman spectroscopy analysis was performed using a PeakSeeker Pro - 785, Agiltron, (Ocean Optics, USA). The Raman measurements were carried out from 250 to 1800 cm - 1 , with an excitation laser power of 100 mW (785 nm) , the integration time of 60 s, and the frame of 10 s...