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Microencapsulation of probiotic starter culture in protein–carbohydrate carriers using spray and freeze-drying processes: Implementation in whey-based beverages

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2022
Authors
Obradović, Nataša
Volić, Mina
Nedović, Viktor
Rakin, Marica
Bugarski, Branko
Article (Published version)
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Abstract
The production of functional beverages has gained more attention because of growing consumers' interest in personal health. The process of carrier production and characterization of a novel type of protein-carbohydrate carriers for functional beverages with a focus on cell protection during fermentation, gastrointestinal, and storage conditions are shown in this study. Probiotic starter culture was microencapsulated using spray and freeze-drying techniques and then implemented in whey-based beverages. Encapsulation materials used are whey protein concentrate, whey, and sodium alginate. The encapsulation efficiency results were over 76.8% and 81.4%, after spray and freeze-drying respectively, depending on the carrier formulation. The culture in freeze-dried carriers reached a higher survival rate (>7.5 log10(CFUg−1)) than one's encapsulated by spray-drying technique during storage. Microencapsulation of the culture significantly improved cell viability in gastrointestinal and storage co...nditions compared with free cells. Usage of both encapsulation techniques showed potential regarding cell preservation in production and storage.

Keywords:
Fermented beverages / Freeze and spray-drying techniques / Microencapsulation / Probiotic starter culture / Whey
Source:
Journal of Food Engineering, 2022, 321, 110948-
Publisher:
  • Elsevier Ltd
Funding / projects:
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200287 (Innovation Center of the Faculty of Technology and Metallurgy) (RS-200287)

DOI: 10.1016/j.jfoodeng.2022.110948

ISSN: 0260-8774

WoS: 00078227740000

Scopus: 2-s2.0-85122645857
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URI
http://aspace.agrif.bg.ac.rs/handle/123456789/6031
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  • Radovi istraživača / Researchers’ publications
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Poljoprivredni fakultet

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