This activity is designed to illustrate how gelatin can be used as a medium for drug delivery.
There are no safety hazards with materials used in this experiment. The pills may become moldy after storage for several days or more. If that occurs, they should be disposed of in the trash.Disposal:
All materials used in this experiment can be safely disposed of in the trash.
Gelatin is a thermoreversible or cold-setting polymer. If the gelatin is not refrigerated or reheated, it will slowly convert back to a liquid. Because of this, a gelatin such as Jell-O® should remain refrigerated or it will become tasteless Kool-Aide®. Another popular dessert is Jell-O® instant pudding. It contains a modified food starch instead of gelatin. The instant pudding uses a heat-setting superabsorbing thickening polymer (the starch) to create its gelatinous texture.
The release of the blue embedded
dye in the gelatin is for this same reason. In addition, the heat from
the hot water promotes diffusion of the dye from the higher concentration
of dye in the gelatin to the lower concentration of dye in the hot water.
The dye eventually diffuses completely out of the gelatin over time which
simulates the slow release of a drug from a pill.
Activities:"Doing" science by asking questions.
PSLC OFFERS THIS SITE AS AN EDUCATIONAL TOOL. PSLC IS NOT RESPONSIBLE FOR ANY INJURY OR DAMAGE CAUSED TO ANY PERSON, DIRECTLY OR INDIRECTLY, RELATING TO ANY OF THE DEMOS OR EXPERIMENTS LISTED AT THIS SITE. YOU ARE WHOLLY RESPONSIBLE FOR YOUR SAFETY.
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