A non-synthetic biodegradable starch-based composition is described comprising starch, plasticizer, reinforcing filler, binder, in the presence or absence of alkali or salt, and water. The starch-based composition is subjected to transformation process to produce various foam-liked products, having closed cell structure with dense skin layer. These products are particularly suitable for use as disposal or single-used food packages or containers. These products are to substitute the shape bodies currently used made of plastic or plastic foam. A transformation process of the non-synthetic biodegradable starch-based composition into various foam-liked products is also described. The process is either injecting or compressing the starch-based composition and forming a desired shape in a closed mould at a temperature ranging from 150 to 300 degree Celcius until the gelatinization of starch has been accomplished.