Antimicrobial efficacy of cinnamaldehyde, chitosan and high pressure processing against Cronobacter sakazakii in infant formula

Hayriye Cetin-Karaca, Melissa C. Morgan

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

This study investigated the antimicrobial efficacy of trans-cinnamaldehyde (TC) and chitosan (CH) along with high pressure processing (HPP) against Cronobacter sakazakii in infant formula. HPP, with or without TC, and CH, was applied to reconstituted powdered infant formula with C. sakazakii. Microbiological and sensory analyses, pH, protein oxidation, and emulsion stability of each sample were determined. C. sakazakii was totally inactivated by HPP (600 MPa for 5 min), TC (0.05%) and CH (1%) combination after 4, 6, and 2 weeks of storage at 7, 23, and 45°C, respectively. All HPP treatments exhibited a minimum of 5.5 log CFU/ml reduction while the highest reductions with non-HPP treatments were 2.1, 1.1, and 3.7 log CFU/ml at 7, 23, and 45°C storage, respectively. Although TC exhibited a cinnamon-like taste, overall sensory attributes were not significantly different from the control samples. Remarkable deformation and damage in C. sakazakii cells were observed by transmission electron microscopy after the application of HPP and bioactive compounds.

Original languageEnglish
Article numbere12845
JournalJournal of Food Safety
Volume40
Issue number6
DOIs
StatePublished - Dec 2020

Bibliographical note

Funding Information:
The authors gratefully acknowledge Avure High Pressure Processing Laboratories, for supporting the study.

Publisher Copyright:
© 2020 Wiley Periodicals LLC.

ASJC Scopus subject areas

  • Parasitology
  • Food Science
  • Microbiology

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