Catalase is an enzyme found in many animal tissues such as meat and liver,
and many plant tissues, such as stems of seedlings. Catalase is found in the
organelle peroxisomes and microbodies in a cell. In industry, it is used to
generate oxygen to convert latex to foam rubber. The presence of catalase is
important because it can decompose hydrogen peroxide, which is a byproduct
of certain cell oxidations and is very toxic. Catalase can eliminate the hydrogen
peroxide immediately. It is the fastest-acting enzyme known. Its activity can be
demonstrated by dropping a piece of fresh liver into hydrogen peroxide, when
rapid evolution of oxygen is observed.
Principles The evolution of gas should be observed when catalase is placed into hydrogen
peroxide. The hydrogen peroxide is decomposed into water.