What question did this study set out to answer?

To review the influence of vineyard and winery nitrogen additions on grape berry development, fermentation performance, and final wine chemical and sensory profiles.

October 1, 2005Australian Journal of Grape and Wine Research

Implications of nitrogen nutrition for grapes, fermentation and wine

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Authors

SBSally‐Jean BellAustralian Wine Research Institute PHPaul A. HenschkeWine Australia

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Implication

Narrative review reveals that intermediate must yeast-assimilable nitrogen optimizes fermentation and sensory quality in winemaking, highlighting the value of tailored vineyard and winery nutrient...

Key Points

To review the influence of vineyard and winery nitrogen additions on grape berry development, fermentation performance, and final wine chemical and sensory profiles.
Synthesized viticultural and enological literature investigating nitrogen dynamics across grapevines and winemaking.
Evaluated the metabolic and kinetic effects of varying yeast-assimilable nitrogen (YAN) concentrations and supplementation strategies on must fermentation.
Vineyard nitrogen fertilization consistently elevates grape nitrogenous compounds, including total amino acids, ammonium, arginine, proline, and yeast-assimilable nitrogen (YAN).
Low must YAN causes sluggish fermentation and elevated hydrogen sulfide and higher alcohols, whereas excessive YAN promotes volatile acidity, ethyl carbamate, biogenic amines, and haze-forming proteins.
Intermediate YAN levels provide the ideal metabolic balance, requiring vineyard macro-tuning combined with winery micro-tuning using additives like diammonium phosphate.

Cite This Study

Bell et al. (2005) studied this question.

synapsesocial.com/papers/69de7c3b7ed287395e5591c6 https://doi.org/10.1111/j.1755-0238.2005.tb00028.x

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Implication

Narrative review reveals that intermediate must yeast-assimilable nitrogen optimizes fermentation and sensory quality in winemaking, highlighting the value of tailored vineyard and winery nutrient...

Implications of nitrogen nutrition for grapes, fermentation and wine

Discussion

Member takes

Implication

Key Points

Cite This Study

Implications of nitrogen nutrition for grapes, fermentation and wine

Discussion

Member takes

Implication

Key Points

Cite This Study

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