Oral tribology: update on the relevance to study astringency in wines
Oral tribology is emerging as a new paradigm to quantify friction and lubrication of food-saliva mixtures in the oral mucosa. Recently, oral tribology has captured research attention in quantifying wine astringency, a characteristic ‘dryness feeling’, which strongly impacts consumer preference. Henc...
| Authors: | , |
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| Format: | article |
| Status: | Versión aceptada para publicación |
| Publication Date: | 2017 |
| Country: | España |
| Institution: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repository: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/194170 |
| Online Access: | http://hdl.handle.net/10261/194170 |
| Access Level: | Open access |
| Keyword: | Oral tribology Astringency Wine Proline-rich proteins Mucin Saliva Lubrication Tannins |
| Summary: | Oral tribology is emerging as a new paradigm to quantify friction and lubrication of food-saliva mixtures in the oral mucosa. Recently, oral tribology has captured research attention in quantifying wine astringency, a characteristic ‘dryness feeling’, which strongly impacts consumer preference. Hence, this paper aims to provide a concise review of oral tribology in the context of wine astringency. Firstly, the important roles of ‘biolubricant’ saliva, salivary proteins and current tribo-pairs used in oral tribology measurements are reviewed. Then, we have discussed the key mechanisms of wine astringency involving polyphenol-salivary protein interactions (hydrogen bonding, hydrophobic interactions), rupture of the lubricating salivary film and oral sensation of discrete particles. Studies employing Stribeck curve analysis and microstructural characterisation to understand polyphenol-salivary protein interactions are reviewed. Finally, we highlighted the need for bio-relevant tribo-pairs, simulated oral conditions and tribology-sensory correlation, before such quantification can be used to characterise wine astringency at a commercial level. |
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