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Enhancement of Viability of Weissella cibaria CMU by Low-Temperature Encapsulation

저온 캡슐화에 의한 Weissella cibaria CMU의 생존율 증진 효과

  • Lee, Da-Eon (Department of Food Science and Biotechnology, Sahmyook University) ;
  • Hwang, Hyo-Jeong (Biomaterials Research Institute, Sahmyook University) ;
  • Jo, Yu-Na (Department of Food Science and Biotechnology, Sahmyook University) ;
  • Jung, Tae-Hwan (Biomaterials Research Institute, Sahmyook University) ;
  • Han, Kyoung-Sik (Department of Food Science and Biotechnology, Sahmyook University)
  • 이다언 (삼육대학교 식품생명산업학과) ;
  • 황효정 (삼육대학교 바이오소재연구소) ;
  • 조유나 (삼육대학교 식품생명산업학과) ;
  • 정태환 (삼육대학교 바이오소재연구소) ;
  • 한경식 (삼육대학교 식품생명산업학과)
  • Received : 2018.09.18
  • Accepted : 2018.09.19
  • Published : 2018.09.30

Abstract

In this study, we aimed to investigate the effects of low-temperature encapsulation on the viability of Weissella cibaria CMU under harsh conditions and in freeze-dried foods during storage. The capsules were prepared by gelation of sodium caseinate at different concentrations (5%, 6%, 7%, and 8%) with a combination of 0.5% gellan gum and 2% $glucono-{\delta}-lactone$. The size distribution of the capsules was determined using a Mastersizer 3000 laser diffraction particle size analyzer. Scanning and transmission electron microscopy revealed that the capsule with 6% sodium caseinate had a smooth and rounded external surface, with reproducibility. The acid, bile, and heat tolerances of the encapsulated cells were significantly higher than those of the control under prolonged acid (5 h), bile (12 and 24 h), and heat (2 h) exposure, respectively. During storage for up to 6 months at $4^{\circ}C$ or $25^{\circ}C$, the viability of encapsulated Weissella cibaria CMU in beef and vegetable rice porridge was effectively improved.

Keywords

References

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