(Photo : Photo by Arbendra Pratap) Bacteria were discovered in rumen fluids, which is the biggest compartment of a ruminant's stomach. Ruminants rely on microorganisms to help break down their coarse plant diet. The researchers hypothesized that some microorganisms in a cow's rumen would be able to digest polyesters. Cow Diet (Photo : Pixabay) Cows eat cutin, a natural polyester generated by plants, as a result of their herbivorous diets. Being a synthetic polyester, PET has a chemical structure comparable to that of this natural material. According to corresponding author Doris Ribitsch, a ...