Determination of biodegradation rate of carrier for microorganism immobilization fabricated based on starch

• Authors: Ewa Tomaszewska-Ciosk , Antoni Golachowski , Ewa Zdybel
• Languages of publication: EN

Abstracts

EN

The study was aimed on the determination of biodegradation rate of extruded starch carriers, with or without immobilized microorganisms in diversified storage conditions. The research was conducted on potato starch, in which Saccharomyces cerevisiae yeast cells were immobilized. Preparations with and without yeasts were than placed for 84 days in the environments of: light soil, heavy soil, compost, water and activated sludge. After 0, 7, 14, 21, 49 and 84 days of storage the preparations were perfused with water and analyzed. In the recovered samples the following tests were carried out: the force causing fracture, the elongation caused by the mentioned force, the mass and the diameter of the carrier. Due to the degradation the size and the mechanical properties of the samples were decreased. The rate of the degradation was strongly dependent on the environment of the storage. The fastest degradation of the carriers were observed for compost and heavy soil, while the slowest biodegradation was observed for the samples placed in the water environment. The rate of biodegradation was also influenced by the Saccharomyces cerevisiae yeasts. The rate of biodegradation was faster in the samples containing yeast cells, than in the extrudates without the microorganisms.

Keywords

EN

biodegradation; immobilization; yeast; extrusion; potato starch

• Publisher: De Gruyter Open
• Journal: Polish Journal of Chemical Technology
• Year: 2013
• Volume: 15
• Issue: 3
• Pages: 110-114

Dates

published

1 - 09 - 2013

online

20 - 09 - 2013

Contributors

author

Ewa Tomaszewska-Ciosk

• University of Environmental and Life Sciences in Wroclaw, Department of Food Storage and Technology, Chelmonskiego 37/41 Str., 51-630 Wroclaw, Poland

author

Antoni Golachowski

• University of Environmental and Life Sciences in Wroclaw, Department of Food Storage and Technology, Chelmonskiego 37/41 Str., 51-630 Wroclaw, Poland

author

Ewa Zdybel

• University of Environmental and Life Sciences in Wroclaw, Department of Food Storage and Technology, Chelmonskiego 37/41 Str., 51-630 Wroclaw, Poland

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Identifiers

DOI

10.2478/pjct-2013-0056