Publication: Ultrasound treatment of crushed grapes: effect on the must and red wine polysaccharide composition
Authors
Martínez Lapuente, Leticia ; Guadalupe, Zenaida ; Ayestarán, Belén ; Pérez Porras, Paula ; Bautista Ortín, Ana Belén ; Gómez Plaza, Encarna
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Facultad de Veterinaria
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Publisher
Elsevier
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DOI
https://doi.org/10.1016/j.foodchem.2021.129669
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info:eu-repo/semantics/article
Description
Abstract
This paper studied the effect on the molecular weight and polysaccharide composition of musts and wines of the application of high-power ultrasound (US) at 20 and 28 kHz on crushed grapes. Two different pomace maceration times (short and mid) were tested for sonicated and control vinifications. A long pomace maceration time was also tested for non-treated wines. In must samples, US significantly increased the content of monosaccharides and polysaccharides rich in arabinose and galactose (PRAG), and the average molecular weight of smaller PRAG, mannoproteins (MP) or mannans. The 28 kHz had a major effect on most wine monosaccharides and grape polysaccharides. The wine obtained from sonicated grapes at 28 kHz and with mid maceration had higher rhamnogalacturonans type II and PRAG content than its control, and closer polysaccharide and monosaccharide content to long maceration control wines. No significant differences were obtained in the MP content between sonicated and control wines.
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Citation
Martínez Lapuente, Leticia, Zenaida Guadalupe, Belén Ayestarán, Paula Pérez-Porras, Ana Belén Bautista-Ortín, Encarna Gómez-Plaza, Ultrasound treatment of crushed grapes: Effect on the must and red wine polysaccharide composition, Food Chemistry, Volume 356, 2021
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