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Levan and Levan/Pullulan Blend Films: AFM and FTIR Spectroscopy Characterization

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2018
LoncarevicWorkshopFood2018_1.pdf (1.917Mb)
Authors
Lončarević, Branka
Nikolić, Vladimir
Lugonja, Nikoleta
Ranđelović, Danijela
Gojgić-Cvijović, Gordana
Jakovljević, Dragica
Beškoski, Vladimir
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Abstract
The numerous naturally occurring biopolymeric materials are used as edible films and coatings (lipids, proteins, and polysaccharides). Microbial levan and pullulan have been already considered as biopolymers in food industry. The aim of this work was to obtain the levan and levan/pullulan blend films and compare them using the Atomic force microscopy (AFM) and Fourier transform infrared spectroscopy (FTIR). Two different films compositions were prepared by casting method: levan and levan/pullulan in the proportions 1:1. AFM measurements showed that levan film had a smoother surface and, consequently, a lower degree of roughness comparing to the levan/pullulan blend films. FTIR spectra showed peaks, which corresponded to all components of the obtained films.
Keywords:
Biopolymers / Microbial levan / Atomic force microscopy (AFM) / Fourier transform infrared spectroscopy (FTIR)
Source:
Proceedings - 6th Workshop Specific Methods for Food Safety and Quality, 2018, 33-36
Publisher:
  • Belgrade : Society of Physical Chemists of Serbia
Projects:
  • Simultaneous Bioremediation and Soilification of Degraded Areas to Preserve Natural Resources of Biologically Active Substances, and Development and Production of Biomaterials and Dietetic Products (RS-43004)
  • Micro- Nanosystems and Sensors for Electric Power and Process Industry and Environmental Protection (RS-32008)
  • COST Action FP1405
Note:
  • Poster: https://cer.ihtm.bg.ac.rs/handle/123456789/3984

ISBN: 978-86-7306-148-1

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URI
https://cer.ihtm.bg.ac.rs/handle/123456789/3983
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