What environmental factors can cause the inactivation of immobilized lipase?
Aug 14, 2024
1. Temperature:
High temperature: High temperature beyond its tolerance range can denature the protein structure of the enzyme, resulting in loss of enzyme activity.
Low temperature: Although low temperature generally does not denature and inactivate the enzyme, it may temporarily reduce the activity of the enzyme.
2. pH value:
Overly acidic or alkaline environment: It will change the charged state of the enzyme molecule, affect its conformation and the function of the active center, and thus lead to inactivation.
3. Ionic strength:
Excessively high or low ionic strength: It may destroy the ion balance around the enzyme molecule and affect the stability and activity of the enzyme.
4. Organic solvents:
Most organic solvents: They will destroy the hydration layer of the enzyme, affect the structure and function of the enzyme, and lead to inactivation.
5. Oxidative environment:
The presence of oxidants: Such as hydrogen peroxide, etc., may oxidize the amino acid residues in the enzyme molecule, resulting in enzyme inactivation.
6. Microbial contamination:
Microorganisms in the environment: They may produce substances that decompose the enzyme, or compete with the enzyme for substrates, affecting the activity of the enzyme.
7. Mechanical stress:
For example, strong stirring, vibration or squeezing: may damage the structure of the immobilized carrier and enzyme, resulting in enzyme inactivation.
