Biodegradable cutley refers to cutley that can undergo biochemical reactions under the action of microorganisms (bacteria, molds, algae) and enzymes in the natural environment, causing mildew in appearance to change in internal quality, and finally forms carbon dioxide and water. There are two kinds of materials used for degradable tableware: one is made of natural materials, such as paper products, straw, starch, etc., which are degradable and are also called environmentally friendly products; http://www.yourbioplastics.com/biodegradable-cutlery/