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The ability of this versatile food wrap to cling to both food and containers makes it superior for forming an airtight seal. There are many varieties of plastic wrap, some of which are thicker, cling better and have better moisture-vapor retention than others. Most plastic wraps are made of
, whose components are not absorbed by foods to any degree. The wrap that is considered to have the best cling and moisture retention is made of
, another leading brand is made of
). For added flexibility, both require the addition of plasticizers that, if in direct extended contact with food, can be absorbed. However, the USDA has approved their use with food and, though little is known of the effects of human ingestion of plasticizers over a prolonged period of time, there is no current evidence that they are harmful. There is some concern, however, that wraps containing plasticizers can transfer their components to food during lengthy heating in a microwave oven.
Material adapted from the
The New Food Lover's Companion
© Copyright Barron's Educational Services, Inc. 1995 based on
THE FOOD LOVER'S COMPANION, 2nd edition, by Sharon Tyler Herbst.
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