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pmid: 34601211
handle: 10261/269991 , 11572/319066 , 10449/70194
This research aims at predicting sensory properties generated by the phenolic fraction (PF) of grapes from chemical composition. Thirty-one grape extracts of different grape lots were obtained by maceration of grapes in hydroalcoholic solution; afterward they were submitted to solid phase extraction. The recovered PFs were reconstituted in a wine model. Subsequently the wine models, containing the PFs, were sensory (taste, mouthfeel) and chemically characterized. Significant sensory differences among the 31 PFs were identified. Sensory variables were predicted from chemical parameters by PLS-regression. Tannin activity and concentration along with mean degree of polymerization were found to be good predictors of dryness, while the concentration of large polymeric pigments seems to be involved in the "sticky" percept and flavonols in the "bitter" taste. Four fully validated PLS-models predicting sensory properties from chemical variables were obtained. Two out of the three sensory dimensions could be satisfactorily modeled. These results increase knowledge about grape properties and proposes the measurement of chemical variables to infer grape quality.
570, Astringency sub-qualities, Tannin activity, Taste Perception, Wine, Sensory analysis, Rate-k-attributes, Taste, Vitis, Sorting task, Settore CHIM/10 - CHIMICA DEGLI ALIMENTI, Grapes, Tempranillo; Garnacha; Polyphenols; Sensory analysis; Sorting task; Rate-k-attributes; Astringency sub-qualities; Tannin activity, Tannins
570, Astringency sub-qualities, Tannin activity, Taste Perception, Wine, Sensory analysis, Rate-k-attributes, Taste, Vitis, Sorting task, Settore CHIM/10 - CHIMICA DEGLI ALIMENTI, Grapes, Tempranillo; Garnacha; Polyphenols; Sensory analysis; Sorting task; Rate-k-attributes; Astringency sub-qualities; Tannin activity, Tannins
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 21 | |
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| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Top 10% |
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