A novel approach for calculating shelf life of minimally processed vegetables

For microbiological analysis, 10 g of each sample were diluted with 90 ml of 0.1% peptone solution in a Stomacher® bag and blended for 1 min in a Stomacher® Lab Blender 400.

The new equation was able to describe the data well and to estimate the shelf life. The results obtained emphasize the importance of using the standard errors for the shelf life value to show significant differences among the samples.

food microbiology lettuce carrot fennel TVC stomacher 400

Influence of variations in methodology on populations of Listeria monocytogenes recovered from lettuce treated with sanitizers

Stomaching, homogenizing, or stomaching followed by homogenizing lettuce treated with sanitizers resulted in recovery of similar numbers of L. monocytogenes, indicating that stomaching and homogenizing are equivalent in extracting cells.

food microbiology sanitizer evaluation lettuce listeria monocytogenes stomacher 400