Annual production of synthetic polymers, most of which are derived from fossil raw materials such as petroleum, exceeds 300 million tons worldwide. Different types of polymers are used in various applications: as construction and building material, for packaging, equipment, toys and furniture, in cars, as colloids in paints, in cosmetics, in medical applications, just to name a few. The major drawback, however, is that these synthetic polymers are almost never recovered or recycled after use (only 9%), and often not be biodegradable in biologically active environments (e.g. underground or in the sea) under the influence of micro-organisms. Most of the polymers is thermally burned after the use phase, ends up in landfills from, worse, in the oceans, where large plastic objects pile up ashore sink or float. This phenomenon is better known as the “plastic soup” problem. Then these plastics will fragment into 'microplastics' (particles between a few mm and <5 mm), which are also carried by our sewers, waterways and rivers. Microplastics do not damage or kill only different organisms, but ultimately they are consumed by humans through the food chain and drinking water. About the toxic effects of microplastics themselves for humans are not in discussion, but they are capable of absorbing other pollutants. In turn, those can be polluting substances disrupt the hormone balance of our immune system, or are carcinogenic. "If we do nothing today, there will be more waste by 2050 fish in our seas, "reports the World Economic Forum. Demand for biodegradable and / or recyclable plastic materials is increasing, driven mainly by the market, but also by the government. For example, Secretary of State for the North Sea Philippe De Backer from Belgium has proposed an action plan to prevent our North Sea from becoming a "plastic soup "(VRT news November 23, 2017). Worldwide demand for biodegradable polymers was estimated in 2014 at approximately USD 1.68 billion and is expected to reach approximately USD 5.18 billion by 2020 (http://www.marketresearchstore.com/news/global-biodegradable-polymer-market-208). But developing biodegradable and / or recyclable polymers alone is not enough. There is a growing debate about fossil resources that used to make synthetic polymers. Not only are there problems with the depletion of fossil resources, but also the price fluctuations and the harmful environmental impacts associated with the extraction of fossil resources (e.g. global warming) lead to a worrying situation. One way to avoid these problems is to use sustainable raw materials from biomass (e.g. vegetable fats and oils, starch, sugars, wood or microbiota) instead of fossil resources. The use of biomass as a raw material for the chemical industry is currently not yet limited in size, but will start increase in importance in the future. The market share of biobased chemicals and products is expected to grow by an average of 6.5% until 2030 per year.