What are bio-based materials?
Bio-based plastics are potentially manufactured from fossil derived materials that also contain material from renewable or sustainable sources. These materials could be bio-polymers or biofillers. Bio-plastics are defined and certified according their non-fossil carbon content. Non-fossil carbon content is quantified by measuring the two carbon isotopes, carbon 12 and carbon 14. All living things absorb both isotopes throughout their lives, on death abortion of the isotopes stops and the level of carbon 14 starts to decrease. It is possible for the levels of these isotopes to be skewed if the organism has absorbed its carbon intake from deep marine or lentic sources. Bio-based materials may not be compostable.