Influence of Chitosan Coating on Mechanical Stability of Biopolymer Carriers with Probiotic Starter Culture in Fermented Whey Beverages

2015
Authors
Obradović, Nataša
Krunić, Tanja

Trifković, Kata T.

Bulatović, Maja

Rakin, Marko

Rakin, Marica

Bugarski, Branko

Article (Published version)
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The aim of this study was to improve the mechanical stability of biopolymer carriers and cell viability with addition of chitosan coating during fermentation process and product storage. Dairy starter culture (1% (w/v)) was diluted in whey and mixed with sodium alginate solution and the beads were made using extrusion technique. The mechanical stability of coated and uncoated beads, the release behavior, and the viability of encapsulated probiotic dairy starter culture in fermented whey beverages were analyzed. The mechanical properties of the beads were determined according to force-displacement and engineering stress-strain curves obtained after compression testing. It was observed that addition of chitosan as a coating on the beads as well as the fermentation process increased the elastic modulus of the calcium alginate-whey beads and cell survival. The current study revealed that the coating did not significantly improve the viability of probiotics during the fermentation but had a...n important influence on preservation of the strength of the carrier during storage. Our results indicate that whey-based substrate has positive effect on the mechanical stability of biopolymer beads with encapsulated probiotics.
Source:
International Journal of Polymer Science, 2015, 2015Publisher:
- Hindawi Ltd, London
Funding / projects:
- Novel encapsulation and enzyme technologies for designing of new biocatalysts and biologically active compounds targeting enhancement of food quality, safety and competitiveness (RS-46010)
- Micromechanical criteria of damage and fracture (RS-174004)
DOI: 10.1155/2015/732858
ISSN: 1687-9422
WoS: 000364084800001
Scopus: 2-s2.0-84947967337
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Tehnološko-metalurški fakultetTY - JOUR AU - Obradović, Nataša AU - Krunić, Tanja AU - Trifković, Kata T. AU - Bulatović, Maja AU - Rakin, Marko AU - Rakin, Marica AU - Bugarski, Branko PY - 2015 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3067 AB - The aim of this study was to improve the mechanical stability of biopolymer carriers and cell viability with addition of chitosan coating during fermentation process and product storage. Dairy starter culture (1% (w/v)) was diluted in whey and mixed with sodium alginate solution and the beads were made using extrusion technique. The mechanical stability of coated and uncoated beads, the release behavior, and the viability of encapsulated probiotic dairy starter culture in fermented whey beverages were analyzed. The mechanical properties of the beads were determined according to force-displacement and engineering stress-strain curves obtained after compression testing. It was observed that addition of chitosan as a coating on the beads as well as the fermentation process increased the elastic modulus of the calcium alginate-whey beads and cell survival. The current study revealed that the coating did not significantly improve the viability of probiotics during the fermentation but had an important influence on preservation of the strength of the carrier during storage. Our results indicate that whey-based substrate has positive effect on the mechanical stability of biopolymer beads with encapsulated probiotics. PB - Hindawi Ltd, London T2 - International Journal of Polymer Science T1 - Influence of Chitosan Coating on Mechanical Stability of Biopolymer Carriers with Probiotic Starter Culture in Fermented Whey Beverages VL - 2015 DO - 10.1155/2015/732858 ER -
@article{ author = "Obradović, Nataša and Krunić, Tanja and Trifković, Kata T. and Bulatović, Maja and Rakin, Marko and Rakin, Marica and Bugarski, Branko", year = "2015", abstract = "The aim of this study was to improve the mechanical stability of biopolymer carriers and cell viability with addition of chitosan coating during fermentation process and product storage. Dairy starter culture (1% (w/v)) was diluted in whey and mixed with sodium alginate solution and the beads were made using extrusion technique. The mechanical stability of coated and uncoated beads, the release behavior, and the viability of encapsulated probiotic dairy starter culture in fermented whey beverages were analyzed. The mechanical properties of the beads were determined according to force-displacement and engineering stress-strain curves obtained after compression testing. It was observed that addition of chitosan as a coating on the beads as well as the fermentation process increased the elastic modulus of the calcium alginate-whey beads and cell survival. The current study revealed that the coating did not significantly improve the viability of probiotics during the fermentation but had an important influence on preservation of the strength of the carrier during storage. Our results indicate that whey-based substrate has positive effect on the mechanical stability of biopolymer beads with encapsulated probiotics.", publisher = "Hindawi Ltd, London", journal = "International Journal of Polymer Science", title = "Influence of Chitosan Coating on Mechanical Stability of Biopolymer Carriers with Probiotic Starter Culture in Fermented Whey Beverages", volume = "2015", doi = "10.1155/2015/732858" }
Obradović, N., Krunić, T., Trifković, K. T., Bulatović, M., Rakin, M., Rakin, M.,& Bugarski, B.. (2015). Influence of Chitosan Coating on Mechanical Stability of Biopolymer Carriers with Probiotic Starter Culture in Fermented Whey Beverages. in International Journal of Polymer Science Hindawi Ltd, London., 2015. https://doi.org/10.1155/2015/732858
Obradović N, Krunić T, Trifković KT, Bulatović M, Rakin M, Rakin M, Bugarski B. Influence of Chitosan Coating on Mechanical Stability of Biopolymer Carriers with Probiotic Starter Culture in Fermented Whey Beverages. in International Journal of Polymer Science. 2015;2015. doi:10.1155/2015/732858 .
Obradović, Nataša, Krunić, Tanja, Trifković, Kata T., Bulatović, Maja, Rakin, Marko, Rakin, Marica, Bugarski, Branko, "Influence of Chitosan Coating on Mechanical Stability of Biopolymer Carriers with Probiotic Starter Culture in Fermented Whey Beverages" in International Journal of Polymer Science, 2015 (2015), https://doi.org/10.1155/2015/732858 . .