Comparative study on biodegradability of polyethylene wax by bacteria and fungi

Fusako Kawai, Masaji Watanabe, Masaru Shibata, Shigeo Yokoyama, Yasuhiro Sudate, Shizue Hayashi

    Research output: Contribution to journalArticlepeer-review

    85 Citations (Scopus)


    Biodegradability of polyethylene wax (PEwax) was studied comparatively between degraders in two different classes: bacteria and fungi. Gel permeation chromatography patterns were obtained before and after cultivation of a bacterial consortium KH-12 and a fungus, Aspergillus sp. AK-3 in culture media containing PEwax as their sole carbon sources for three weeks, and they were introduced into a mathematical model based on two primary factors: the gradual weight loss of large molecules due to β-oxidation processes and the direct consumption of small molecules by cells. The total consumption rates and the β-oxidation rates for both of these degraders were determined numerically, and their degradability was compared.

    Original languageEnglish
    Pages (from-to)105-114
    Number of pages10
    JournalPolymer Degradation and Stability
    Issue number1
    Publication statusPublished - Oct 2004


    • Biodegradation
    • Mathematical model
    • Numerical simulation
    • Polyethylene wax

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Mechanics of Materials
    • Polymers and Plastics
    • Materials Chemistry


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