2.5. Microbial strains
The antimicrobial activity of the carrot juice essential oil with
different treatments was tested against 8 selected food-related
microorganisms. Two gram-positive strains were Listeria monocytogenes
ATCC 19115 and Staphylococcus aureus ATCC 6538 P. Four
gram-negative bacteria were Salmonella typhimurium ATCC
19430, Salmonella enteritidis ATCC 13076, Shigella dysenteriae CMCC
(B) 51252 and Escherichia coli ATCC 25922. Aspergillus niger ATCC
02512 and Yeast were the two fungal microorganisms studied.
All the microorganisms were provided by the Microbiological Laboratory,
College of Life Science, Shaanxi Normal University, China.