Examples of Pasteur Effect
The Pasteur effect is the inhibitory effect of oxygen on the fermentation process. Some examples of the Pasteur effect includes:
- Yeasts: The Pasteur effect explains how yeast (Saccharomyces) can produce energy using two different metabolic pathways. Yeast cells grow quickly in air, but they use little sugar and produce little carbon dioxide and ethanol. Under anaerobic conditions, they grow slower but use more sugar and produce more carbon dioxide and ethanol.
- Ethanol Fermentation: The Pasteur effect describes how oxygen inhibits ethanol fermentation. This causes yeast to switch to aerobic respiration to generate more adenosine triphosphate (ATP).
- Animal tissues and microorganisms: The Pasteur effect also occurs in animal tissues and microorganisms in the kingdom Fungi. The presence of oxygen in cells causes a decrease in the rate of glycolysis and a suppression of lactate accumulation.
- Liver cells: During cold ischemia, liver cells shift from aerobic to anaerobic metabolism. This is self-limiting because it generates insufficient ATP.
- Yeast glucose consumption: The Pasteur effect shows that yeast consume glucose at a higher rate under anaerobic conditions than under aerobic conditions
Pasteur Effect
The Pasteur effect is a phenomenon that occurs when oxygen slows down glycolysis in cells and suppresses lactate accumulation. The effect occurs in animal tissues and microorganisms. It also shows that in the presence of oxygen, cells shift from glycolysis to more efficient oxidative phosphorylation for ATP production. The Pasteur effect is important for preserving nutrients and increasing the energy yield per glucose molecule. In this article, we will study in detail the Pasteur effect, along with its mechanism and important applications.
Table of Content
- Pasteur Effect Definition
- What is the Pasteur Effect?
- Causes of Pasteur Effect
- Mechanism of Pasteur Effect
- Pasteur Effect in Yeast
- Reverse Pasteur Effect
- Negative Pasteur Effect on Fermentation
- Factors Influencing Pasteur Effect
- Examples of Pasteur Effect
- Difference Between the Crabtree Effect and the Pasteur Effect
- Importance of Pasteur Effect