Počet záznamů: 1  

Low-temperature magnetic modification of sensitive biological materials

  1. 1. 0443476 - UEK-B 2016 RIV NL eng J - Článek v odborném periodiku
    Pospišková, K. - Šafařík, Ivo
    Low-temperature magnetic modification of sensitive biological materials.
    Materials Letters. Roč. 142, mar (2015), s. 184-188. ISSN 0167-577X
    Grant CEP: GA MŠk(CZ) LD13021
    Institucionální podpora: RVO:67179843
    Klíčová slova: magnetic iron oxides particles * microwave-assisted synthesis * low-temperature magnetic modification * immobilized enzymes
    Kód oboru RIV: BO - Biofyzika
    Impakt faktor: 2.437, rok: 2015

    Nano- and microparticles consisting of magnetic iron oxides were prepared by microwave-assisted synthesis from ferrous sulfate. They were applied to the direct magnetic modification of sensitive and labile non-magnetic biomaterials (such as plant and seagrass based materials and enzymes immobilized on non-magnetic carriers) at temperatures -20 and -80 degrees C. These conditions warrant stable magnetic modification of non-magnetic biomaterials, e.g. cellulose, lignocellulose, or starch based ones. We have also magnetically modified enzymes immobilized on non-magnetic carriers, for example lipase immobilized on cellulose powder and glucose isomerase immobilized on solid carrier granules. It was observed that a substantial fraction of the activity is maintained by this method and that all the magnetically modified enzymes were stable during eight repeated reaction cycles with only a negligible decrease in activity over time.
    Trvalý link: http://hdl.handle.net/11104/0246193