Physical Characterization of Bacterial Cellulose Produced by Komagataeibacter medellinensis Using Food Supply Chain Waste and Agricultural By-Products as Alternative Low-Cost Feedstocks

Carlos Molina-Ramírez, Cristina Castro, Robin Zuluaga, Piedad Gañán

    Research output: Contribution to journalArticlepeer-review

    33 Scopus citations

    Abstract

    Bacterial cellulose (BC), which is a hemicellulose- and lignin-free type of cellulose with unique properties, was produced by Komagataeibacter medellinensis, a new acid-resistant bacterial strain, using not suitable human consumption and sub-valorized food supply chain waste (FSCW) and agricultural by-products, namely, rotten banana, rotten mango and cheese whey. The BC was analyzed using Fourier transform infrared (ATR-FTIR) , tensile test, atomic absorption spectroscopy and thermogravimetric analysis. The properties of the BC obtained from each culture medium used were different, ranging from a material with high resistance and stiffness (280.6 MPa, 9.4 GPa) to a material with low resistance and less stiffness (17.7 MPa, 0.8 GPa). These properties provide considerable opportunities for obtaining different materials with multiple applications, such as composite reinforcements, wound dressings and edible films. The highest production of BC was achieved with rotten banana medium, and this BC also had the highest tensile properties. Meanwhile, the BC produced from cheese whey medium had the highest maximum rate of degradation temperature at 368 °C. This research demonstrated that FSCW and agrowaste by-products are advantageous alternative feedstocks in terms of economics and environmental concerns for producing BC with multiple properties and fields of application.

    Original languageEnglish
    Pages (from-to)830-837
    Number of pages8
    JournalJournal of Polymers and the Environment
    Volume26
    Issue number2
    DOIs
    StatePublished - 1 Feb 2018

    Bibliographical note

    Funding Information:
    The authors acknowledge funding from the Research Center for Investigation and Development (CIDI) from the Universidad Pontificia Bolivariana and the Science, Technology and the Innovation Administrative Department of the Colombian Government (COLCIENCIAS) for financial support through grant # 672 of 2014.

    Publisher Copyright:
    © 2017, Springer Science+Business Media New York.

    Keywords

    • Agroindustrial by-products
    • Bacterial cellulose
    • Food supply chain waste
    • Komagataeibacter medellinensis
    • Physical properties

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