Jell-O™, Pineapple, and Enzymes
When dissolved in boiling water, Jell-O™ “gels” into a semi-solid state due to interactions that form between the gelatin proteins. Fresh pineapple, in addition to some other fresh fruits, contains an enzyme, called bromelein, that breaks down the proteins in the Jell-O causing it to liquify. Check out the following Web sites to get some ideas for experiments involving Jell-O™ and fresh fruit: