Pasteur and Fermentation Science

Louis Pasteur (1822-1895) experimentally demonstrated that fermentation, then believed to be spontaneous generation, was actually microbial metabolic activity. His swan-neck flask experiment disproved spontaneous generation, and he identified specific microbes causing wine and beer spoilage. These discoveries led to pasteurization and advances in preventing infectious disease. Before Pasteur, fermentation was mysterious. His work shone scientific light on the invisible world and marked the starting point of fermentation science. Yet science has not explained everything—vast unexplored territory remains in the microbial world. Knowledge in this field will become the force opening fermentation's future.