Journal
FOODBORNE PATHOGENS AND DISEASE
Volume 12, Issue 1, Pages 39-46Publisher
MARY ANN LIEBERT, INC
DOI: 10.1089/fpd.2014.1801
Keywords
-
Categories
Funding
- Consejo Superior de Investigaciones Cientificas (CSIC) [IPT-2011-1724-060000]
- CSIC
- Ministry of Economy and Competitiveness
- Fondo Europeo de Desarrollo Regional (FEDER) funds
Ask authors/readers for more resources
The antimicrobial potential of cauliflower, broccoli, and okara byproducts was assessed against Gram-positive and Gram-negative bacteria. Salmonella enterica serovar Typhimurium, Escherichia coli O157:H7, Bacillus cereus, and Listeria monocytogenes serovar 4b growth behavior was assessed under exposure to 5% vegetable byproducts added to the reference medium, buffered peptone water (0.1% [wt/vol]), at 37 degrees C. Although the byproducts were not effective against L. monocytogenes, they were bactericidal against Salmonella Typhimurium, E. coli O157:H7, and B. cereus. The most promising results were achieved with the cauliflower-Salmonella Typhimurium combination, because the bacterial population was reduced by 3.11 log(10) cycles after 10 h of incubation at 37 degrees C as a result of 5% cauliflower addition. Further studies were carried out for this combination, at different cauliflower concentrations (0, 0.5, 1, 5, 10, and 15%) and at temperatures in the range of 5-37 degrees C. The greatest inactivation level (6.11 log(10) cycles) was achieved at refrigeration temperature (5 degrees C) using 15% cauliflower addition. Both temperature and cauliflower concentration significantly (p <= 0.05) influenced the Salmonella Typhimurium inactivation level. The kinetic parameters were adjusted to mathematical models. The modified Gompertz mathematical model provided an accurate fit (root-mean-square error (RMSE) [0.00009-0.21] and adjusted-R-2 [0.81-0.99]) to experimental Salmonella Typhimurium survival curves describing inactivation kinetics of the pathogen to the antimicrobial effect of cauliflower byproduct.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available