| abstract |
The present invention provides a processed biodegradable article having excellent water resistance and rigidity, which can be used as a food container, and a biodegradable composition required to produce the processed biodegradable article. n The respective components are mixed such that the content of starch is 15% by mass or more and 75% by mass or less, the content of protein is 5% by mass or more and 50% by mass or less, the content of cellulose fiber is 3% by mass or more and 50% by mass or less, the content of polyphenols is 0.5% by mass or more and 20% by mass or less, and the content of sodium chloride is 0% by mass or more and 5% by mass or less, and then water is added in the amount of 10 parts by mass or more and 100 parts by mass or less based on 100 parts by mass of the mixture, followed by kneading the mixture using a mixer. Then, the kneaded mixture is press-molded into a predetermined shape such as a cup or a dish, and heat-treated at 120° C. or higher and 180° C. or lower to obtain a processed article having excellent biodegradability. |