Biodegradable polymer which, edible films have gained more attention due to their environmentally-friendly characteristics, vast variety and availability, non-toxicity, and low cost. Biodegradable polymers have a long history, and since many are natural products, the precise timeline of their discovery and use cannot be accurately traced. One of the first medicinal uses of a biodegradable polymer was the catgut suture, which dates back to at least 100 AD. The first catgut sutures were made from the intestines of sheep, but modern catgut sutures are made from purified collagen extracted from the small intestines of cattle, sheep, or goats. The concept of synthetic
Catgut (horse) in a five furlong Subscription Plate. The race was for two and three-year-olds with the provision that the winner would be available for sale at a price of 350 guineas. Catgut started second favourite in a twelve runner field but finished unplaced behind Soota, a black filly owned by Mr Lake. Catgut was retired from racing to become a broodmare at the Duke of Grafton's stud. She produced five foal by stallions including Election, Partisan and Woful before being sold to Mr S L Fox in 1829. The following pedigree assumes that Catgut was sired by Comus Catgut (horse) Catgut