Potato peeling costreams as raw materials for biopolymer film preparation

Katariina Rommi (Corresponding Author), Jenni Rahikainen, Jari Vartiainen, Ulla Holopainen, Panu Lahtinen, Kaisu Honkapää, Raija Lantto

    Research output: Contribution to journalArticleScientificpeer-review

    22 Citations (Scopus)


    Potato peel mass is a costream produced in large quantities by the food industry. Its availability and the presence of starch (46%), pectin, and cellulose make it a potential renewable raw material for polymer products. In this study, biopolymer films were produced from potato peel mass and glycerol. High‐pressure homogenization (HPH) and HPH combined with heat treatment were investigated as pretreatment technologies before film casting. HPH‐treated potato peel mass yielded biopolymer films with similar barrier and mechanical properties as films prepared from pure potato starch, including complete impermeability to grease. Additional heat treatment of the peel mass enhanced starch gelatinization, resulting in improved barrier properties and smoother surface topography of the films. Films with similar appearance and quality were also obtained from starch‐free potato peel mass, indicating that potato fiber rich in pectin and cellulose is likewise a suitable material for biopolymer film preparation after HPH treatment.
    Original languageEnglish
    Article number42862
    Number of pages11
    JournalJournal of Applied Polymer Science
    Issue number5
    Publication statusPublished - Feb 2016
    MoE publication typeA1 Journal article-refereed


    • biopolymers and renewable polymers
    • films
    • mechanical properties
    • microscopy
    • polysaccharides


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