Abstract:
:Interest in potential food applications of ozone has expanded in recent years in response to consumer demands for green technologies. This study was conducted to evaluate the efficacy of gaseous ozone for the microbial reduction and elimination of Salmonella on dried oregano. Ozone treatment was performed up to 120min under continuous stream of two different constant ozone concentrations (2.8 and 5.3mg/L). Significant (P<0.05) reductions of 2.7 and 1.8 log were observed in aerobic plate counts and yeast and mold counts after ozonation at 2.8mg/L for 120min, respectively. Ozonation performed at 5.3mg/L for 90min yielded a reduction of over 3.2 log in the aerobic plate counts. Initial population of a cocktail of Salmonella serotypes (S. Typhimurium, S. Newport and S. Montevideo) on inoculated oregano determined as 5.8logCFU/g decreased significantly by 2.8 and 3.7 log after ozonation at 2.8 and 5.3mg/L for 120min, respectively. Sensory evaluation results suggested that over the 2 log reduction in the microbial population can be obtained on dried oregano by gaseous ozone treatments with an acceptable taste, flavor and appearance. The results demonstrated that the gaseous ozone treatment is an effective alternative microbial reduction technique for dried oregano.
journal_name
Int J Food Microbioljournal_title
International journal of food microbiologyauthors
Torlak E,Sert D,Ulca Pdoi
10.1016/j.ijfoodmicro.2013.05.030subject
Has Abstractpub_date
2013-08-01 00:00:00pages
276-80issue
3eissn
0168-1605issn
1879-3460pii
S0168-1605(13)00278-Xjournal_volume
165pub_type
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