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Microencapsulation of Bifidobacterium bifidum F‐35 in reinforced alginate microspheres prepared by emulsification/internal gelation
Author(s) -
Zou Qiang,
Zhao Jianxin,
Liu Xiaoming,
Tian Fengwei,
Zhang Heping,
Zhang Hao,
Chen Wei
Publication year - 2011
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/j.1365-2621.2011.02685.x
Subject(s) - bifidobacterium bifidum , starch , microsphere , chitosan , polysaccharide , pectin , coating , food science , probiotic , chemistry , bifidobacterium , materials science , chemical engineering , composite material , biochemistry , bacteria , biology , fermentation , engineering , lactobacillus , genetics
Summary Alginate microspheres containing Bifidobacterium bifidum F‐35 prepared by emulsification/internal gelation were reinforced by blending with pectin or starch or coating with chitosan or poly‐L‐lysine to provide extra protection for the strain. The influence of these treatments on the size of microspheres, encapsulation yield (EY) and protective effect of microencapsulation on the cells was studied. No difference was detected in EY with different types of reinforcement, which was approximately 43–50%. The mean diameter of reinforced alginate microspheres ranged from 117 to 178 μm, reaching a maximum value when starch was incorporated in the alginate matrix. It was observed that the protective effects varied with the type of reinforcement. However, chitosan‐coated alginate microspheres provided the best protection for microencapsulated cells in simulated gastrointestinal tract and during 1 month of storage at 4 °C, and this system could be the comparatively effective vector of bifidobacteria for intestinal delivery.