Tractor-trailer and 18-wheeler both refer to the combination of a semi-truck and semi-trailer. Together, they form a tractor-trailer unit, also referred to as an 18-wheeler, owing to the number of wheels present on the unit as a whole.
Quick Answer. Many different types of foods contain gelatin, including peanuts, marshmallows, Jell-O, yogurt, gummy candies and some sour cream brands, among other foods. The best way to determine if a food contains gelatin is to read the product's label. Continue Reading.
Gelatin. Gelatin is a protein substance derived from collagen, a natural protein present in the tendons, ligaments, and tissues of mammals. It is produced by boiling the connective tissues, bones and skins of animals, usually cows and pigs.s a foodstuff, gelatin is the basis for jellied desserts; used in the preservation of fruit and meat, and to make powdered milk, merinque, taffy, marshmallow, and fondant.