Background Information--what does pH and temperature do?
The electronic version of McGraw-Hill Encyclopedia of Science and Technology.
Contains articles on "Amylase" and "Enzyme. In the article on "Enzyme" there is a discussion about pH and temperature optima under the Kinetics section of the article.
Includes and article entitled: "Enzymes: General Properties" Also includes an excellent article on "Enzyme activity and assays", includes short paragraphs on the effect of pH and temperature on enzymatic acticity.
Has an article "Enzymes, coenzymes and the control of cellular chemical reactions."