University of Hertfordshire

From the same journal

By the same authors

  • Sawaminee Nualkaekul
  • Dominique Lenton
  • Michael T. Cook
  • Vitaliy V. Khutoryanskiy
  • Dimitris Charalampopoulos
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Original languageEnglish
Pages (from-to)1281-1287
Number of pages7
JournalCarbohydrate Polymers
Publication statusPublished - 15 Oct 2012


This work studied the effect of multi-layer coating of alginate beads on the survival of encapsulated Lactobacillus plantarum in simulated gastric solution and during storage in pomegranate juice at 4°C. Uncoated, single and double chitosan coated beads were examined. The survival of the cells in simulated gastric solution (pH 1.5) was improved in the case of the chitosan coated beads by 0.5-2 logs compared to the uncoated beads. The cell concentration in pomegranate juice after six weeks of storage was higher than 5.5 log CFU/mL for single and double coated beads, whereas for free cells and uncoated beads the cells died after 4 weeks of storage. In simulated gastric solution, the size of the beads decreased and their hardness increased with time; however, the opposite trend was observed for pomegranate juice, indicating that there is no correlation between cell survival and the hardness of the beads.

ID: 8599283