Thanks ed, i don;t know the chemical components, but i have heard that some wraps release bad stuff into food and some don't. I believe they do sell one of the good ones here, in some remote supermarkets.
The fact that hospitals use it doesn;t much convince me though. Hospitals serve jello to sick people - jello - artificial color, artificial flavor... it's really not any harder to make gelatin with apple juice (transparent like jello) and sugar and lemon, but they use the crap stuff. I once had a discussion with an American dietologist in Rome who said that italian hospitals were really backward in the dietology department. I then, snidely, i admit, asked her why they serve jello to convalescents in american hospitals. She said it's transparent and so doesn't cause problems. I asked if apple juice would be equally acceptable. She said yes. So i pointed out that jello is made of chemicals and apple juice is not - she politely remembered she had to move over to the other side of the room!
"Siduri said, 'Gilgamesh, where are you roaming? You will never find the eternal life that you seek...Savour your food, make each of your days a delight, ... let music and dancing fill your house, love the child who holds you by the hand and give your wife pleasure in your embrace.'"