Wine Chemistry and Biochemistry
542 C. Santos-Buelga and V. de Freitas Vivar-Quintana et al. 2002). Using thiolysis, mean polymerization degrees between 2.9 and ...
9D Influence of Phenolics on Wine Organoleptic Properties 543 not satisfactorily explained and even in the case of the identifie ...
544 C. Santos-Buelga and V. de Freitas λ / nm 400 500 600 700 0,0 0,2 0,4 0,6 0,8 Absrobance 503 nm 520 nm Fig. 9D.5Absorption s ...
9D Influence of Phenolics on Wine Organoleptic Properties 545 de Freitas (2001) when measured at their maximum wavelengths in me ...
546 C. Santos-Buelga and V. de Freitas vinylpy-Mv-Cat (575 nm) Mv3glc (λmax520 nm) Wavelength (nm) Absorbance vinylpy-Mv-Cat (57 ...
9D Influence of Phenolics on Wine Organoleptic Properties 547 Mv3glc Catechin-ethyl-Mv3glcCatechin-ethyl-Mv3glc Fig. 9D.8Absorpt ...
548 C. Santos-Buelga and V. de Freitas alcoholic fermentation, in which the formation of ethyl-linked polymers can be expected t ...
9D Influence of Phenolics on Wine Organoleptic Properties 549 Wavelength pH 1.0 pH 1.5 pH 2.0 pH 2.4 pH 3.0 pH 4.0 250 300 350 4 ...
550 C. Santos-Buelga and V. de Freitas λ (nm) pH 1 and3 500 nm 400 450 500 550 600 650 700 Absorbance pH 4 pH 5 Fig. 9D.10Absorp ...
9D Influence of Phenolics on Wine Organoleptic Properties 551 Gawel et al. (2000) have proposed an interesting hierarchically st ...
552 C. Santos-Buelga and V. de Freitas One of the most important properties of tannins, and why tannins are recognised, is their ...
9D Influence of Phenolics on Wine Organoleptic Properties 553 the hydroxyl groups of phenolic compounds and carbonyl and amide g ...
554 C. Santos-Buelga and V. de Freitas 9D.3.3 Tannin Structures and Their Influence in Wine Astringency Tannins are ubiquitous c ...
9D Influence of Phenolics on Wine Organoleptic Properties 555 9D.3.4 Protein Structures The interaction between tannins and prot ...
556 C. Santos-Buelga and V. de Freitas and Noble 2005; Horne et al. 2002), with which it seems to be inversely related (Lesschae ...
9D Influence of Phenolics on Wine Organoleptic Properties 557 (Cheynier et al. 2006). In conclusion, and attending to all the in ...
558 C. Santos-Buelga and V. de Freitas In fact, the cellular structure of fruits softens during ripening as a result of the enzy ...
9D Influence of Phenolics on Wine Organoleptic Properties 559 In general, the effectiveness of carbohydrates to prevent protein- ...
560 C. Santos-Buelga and V. de Freitas Some studies have been made relating specifically to astringency. Some of these studies h ...
9D Influence of Phenolics on Wine Organoleptic Properties 561 Baranac, J. M., Petranovic, N. A., & Dimitric-Markovic, J. M. ...
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