Feasibility study on the use of ATR-FTIR spectroscopy as a tool for the estimation of wine polysaccharides

Autor: Berta Baca-Bocanegra, Leticia Martínez-Lapuente, Julio Nogales-Bueno, José Miguel Hernández-Hierro, Raúl Ferrer-Gallego
Přispěvatelé: Universidad de Sevilla. Departamento de Química Analítica, Universidad de Sevilla. AGR225: Color y Calidad de Alimentos, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Junta de Andalucía
Rok vydání: 2022
Předmět:
Zdroj: RIUR. Repositorio Institucional de la Universidad de La Rioja
instname
ISSN: 1879-1344
Popis: Polysaccharides are the main macromolecules of colloidal nature in wines. These compounds play a critical role in stabilizing other molecules in solution and thus modifying the wine processing and organoleptic properties. Different analytical techniques have been proposed for their determination. However, most of them are complicated and time-consuming. To overcome these drawbacks, Fourier transform infrared spectroscopy (FTIR) has been evaluated in this study for the estimation of wine polysaccharides in a fast and non-destructive way. Spectral data have been correlated with wine polysaccharide contents by modified partial least squares regression (MPLS) using different spectral pretreatments. MPLS models developed have revealed the potential of FTIR analysis for the routine screening of polysaccharides rich in arabinose and galactose (PRAG), rhamnogalacturonans types II (RG-II), mannoproteins (MP) and total soluble polysaccharides (TSP) in wine samples, obtaining standard errors of prediction from 6.07 to 8.44%. Monitoring the wine polysaccharides can assist in the elaboration of the wines according to their requirements and improving quality to satisfy consumer preferences.
This work was supported by Spanish Ministerio de Economía y Competitividad [grant number AGL2017-84793-C2] and by Junta de Andalucía [grant number PAIDI-DOCTOR:DOC_00906].
Databáze: OpenAIRE
Externí odkaz: