Topic: Winemaking Science

62 result(s).

Enzymes for Hobbyists

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When pioneers of winemaking like Louis Pasteur or André Tchelistcheff are mentioned, James B. Sumner is often overlooked. Nonetheless, this Nobel-prize-winning chemist (1946) set in motion the entire scientific field for today’s article. In 1926, Sumner successfully crystallized the enzyme urease and performed chemical analysis that demonstrated that urease is a protein. Not at all

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Mastering Wine Acid Balance

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Sometimes the acidity of your grapes, juice, or wine will need to be adjusted. Learn some of the finer details surrounding how, and when, to make those acid adjustments to your wine.

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Make Wines to Age

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It starts with great fruit, but to make age-worthy red wine the winemaker must also consider acidity, tannins, sulfur dioxide, oxygen, cellaring conditions, and how all of these factors (and others) relate to each other.

In the Wine Lab

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Sooner or later, if you make wine at home, you are going to do some chemical analysis. To establish (or expand) your wine testing capability, what will it take? There are some

Tannin Chemistry

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Soft, silky, velvety, youthful, puckery, aggressive, harsh, bitter, astringent: These are all adjectives used in winespeak to describe the many taste sensations from tannins in red wines. Learn about the science behind them

Oak Barrel Chemistry

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The benefits of fermenting or aging wine in toasted oak barrels are indisputable and unmatched by any other type of wood. Not only do oak compounds impart aromas and flavors as well

The Home Wine Laboratory

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 It is said that fine winemaking begins in the vineyard, but I’ve found that winemaking is an unending process, starting with the grapes and continuing to evolve once bottled. Wine is a

The Biology of Malolactic “Bugs”

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In this excerpt from the technical binder “Malolactic Fermentation in Wine” (Lallemand, 2005) written for commercial winemakers, researchers at Lallemand, Inc. offer an insider’s view of the more technical aspects of malolactic

I made some wine using coffee as an ingredient and I was wondering what happens to the caffeine during fermentation?

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Coffee wine, eh? I’ve heard of using strong black tea as a tannin additive and of using coffee in brewing recipes for a super-charged stout but I’ve never heard of making coffee wine. You and your father are quite adventurous — I hope that it turns out well. To answer your question about whether caffeine

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What is your opinion of enzymes added to wine to improve color, mouthfeel, and flavor?

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Lallzyme EX is a blend of enzymes that helps break down the plant cells in grapes. This mix of pectinase, cellulase and hemicellulase is introduced at the crusher or right at the outset of fermentation and is most often used for red winemaking. According to the company, this enzyme cocktail aids in the release of

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The Phenol Phenomenon

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A saturated, dark-ruby colored, full-bodied wine with a velvety texture and round mouthfeel, oodles of blackberry aromas and oak flavor overtones with just a hint of spiciness, all with a persistent, memorable finish. The young, yet soft and elegant tannins make this wine approachable now but it will improve with time and can last another

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Your Home Wine Lab

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Sooner or later, most serious winemakers conclude that it isn’t good enough to simply follow a recipe blindly. That’s a bit too much like painting-by-numbers. The expression of one’s own skill and artistry makes the difference between an ordinary wine and something uniquely personal. But to do that, it’s necessary to understand a bit about

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62 result(s) found.