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Showing 1 to 6 of 6 for “"Hydroxycinnamates"”.
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Effects of Hydroxycinnamates and Exogenous Yeast Assimilable Nitrogen on Cider Aroma and Fermentation Performance
Heritage apple cultivars for cider-making are often distinguished by a high concentration of tannins (phenolic compounds), and/or acid. The phenolic content of some cider apples far exceeds that of white wine, however most cider fermentation practices are directly taken from white winemaking, not …
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Chemistry of hydroxycinnamate esters and their role as precursors to Dekkera produced off-flavour in wine.
… esters, the tartaric acid and glucose bound hydroxycinnamates, as well as the vinification formed ethyl esters, were synthesised and used for model fermentation experiments. Chapter 2 describes the preparation of a number of protected hydroxycinnamic acid derivatives that were used in the …
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The effects of post-fermentation and post-bottling heat treatment on Cabernet Sauvignon (V. vinifera L.) glycosides and quantification of glycosidase activities in selected strains of Brettanomyces bruxellensis and Oenococcus oeni
… (12%), phenol-free glycosides (18%), total hydroxycinnamates (16%), large polymeric pigments (LPP) (208%) small polymeric pigments (SPP) (41%), and lower monomeric pigments (42%) in wines. Skins had lower total glycosides (-16%), and no significant difference in phenol-free glycosides. …
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The Impact of Prohexadione-calcium on Grape Vegetative and Reproductive Development and Wine Chemistry
… components of yield, and fruit chemistry values: hydroxycinnamates, total phenols, flavonoids, PPFG and absorbance at 280 and 320 nm. Post-bloom applications did not affect Chardonnay vegetative or reproductive development, yet increased PFGG. Treatment did not affect Chardonnay wine chemistry but …
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Studies on the biosynthesis of podophyllotoxin:synthesis of labelled yatein and matairesinol, two potential precursors of podophyllotoxin
… biosynthetic steps which, though common for hydroxycinnamates, are unprecedented at the dimeric level. Conversion of yatein to podophyllotoxin has been demonstrated, with the conversion involving a stereo-controlled cyclization and subsequent stereospecific hydroxylation. In order to …
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Adaptation de streptomyces scabies au périderme de la pomme de terre
Le périderme de la pomme de terre est composé principalement de subérine. La subérine est composée de deux domaines, les domaines polyaliphatique et polyaromatique. Le domaine aliphatique de la subérine est constitué de polyesters d’acides gras avec des acides féruliques estérifiés. L'acide …