What was the title of Pasteur's 1866 book about wine diseases?

Pasteur’s 1866 book about wine diseases was titled Études sur le Vin, meaning “Studies on Wine.”

The book grew from Pasteur’s investigation of why wine sometimes turned sour or developed other defects. He argued that different microorganisms caused different forms of spoilage and proposed controlled heating as a way to preserve wine. This work helped establish a practical link between microbiology and the food-and-drink industries.

Études sur le Vin appeared in 1866, after Pasteur’s 1865 patent for using heat to preserve wine. Its full subject was broader than a simple preservation recipe: it discussed wine diseases, their causes, and new procedures for conserving and aging wine. The research helped inspire the process later called pasteurization.

Readers often confuse the title with Études sur la Bière, Pasteur’s 1876 work on beer diseases. “La Vie des Microbes” was not the title of the 1866 wine book, and Traité de Chimie is unrelated.