Levan and Levan/Pullulan Blend Films: AFM and FTIR Spectroscopy Characterization
Authors
Lončarević, Branka
Nikolić, Vladimir

Lugonja, Nikoleta

Randjelović, Danijela

Gojgić-Cvijović, Gordana

Jakovljević, Dragica

Beškoski, Vladimir

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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, 33-36Publisher:
- Belgrade : Society of Physical Chemists of Serbia
Funding / 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
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IHTMTY - CONF AU - Lončarević, Branka AU - Nikolić, Vladimir AU - Lugonja, Nikoleta AU - Randjelović, Danijela AU - Gojgić-Cvijović, Gordana AU - Jakovljević, Dragica AU - Beškoski, Vladimir PY - 2018 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/3983 AB - 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. PB - Belgrade : Society of Physical Chemists of Serbia C3 - Proceedings - 6th Workshop Specific Methods for Food Safety and Quality T1 - Levan and Levan/Pullulan Blend Films: AFM and FTIR Spectroscopy Characterization SP - 33 EP - 36 UR - https://hdl.handle.net/21.15107/rcub_cer_3983 ER -
@conference{ author = "Lončarević, Branka and Nikolić, Vladimir and Lugonja, Nikoleta and Randjelović, Danijela and Gojgić-Cvijović, Gordana and Jakovljević, Dragica and Beškoski, Vladimir", year = "2018", 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.", publisher = "Belgrade : Society of Physical Chemists of Serbia", journal = "Proceedings - 6th Workshop Specific Methods for Food Safety and Quality", title = "Levan and Levan/Pullulan Blend Films: AFM and FTIR Spectroscopy Characterization", pages = "33-36", url = "https://hdl.handle.net/21.15107/rcub_cer_3983" }
Lončarević, B., Nikolić, V., Lugonja, N., Randjelović, D., Gojgić-Cvijović, G., Jakovljević, D.,& Beškoski, V.. (2018). Levan and Levan/Pullulan Blend Films: AFM and FTIR Spectroscopy Characterization. in Proceedings - 6th Workshop Specific Methods for Food Safety and Quality Belgrade : Society of Physical Chemists of Serbia., 33-36. https://hdl.handle.net/21.15107/rcub_cer_3983
Lončarević B, Nikolić V, Lugonja N, Randjelović D, Gojgić-Cvijović G, Jakovljević D, Beškoski V. Levan and Levan/Pullulan Blend Films: AFM and FTIR Spectroscopy Characterization. in Proceedings - 6th Workshop Specific Methods for Food Safety and Quality. 2018;:33-36. https://hdl.handle.net/21.15107/rcub_cer_3983 .
Lončarević, Branka, Nikolić, Vladimir, Lugonja, Nikoleta, Randjelović, Danijela, Gojgić-Cvijović, Gordana, Jakovljević, Dragica, Beškoski, Vladimir, "Levan and Levan/Pullulan Blend Films: AFM and FTIR Spectroscopy Characterization" in Proceedings - 6th Workshop Specific Methods for Food Safety and Quality (2018):33-36, https://hdl.handle.net/21.15107/rcub_cer_3983 .