In this study the level of microbiological contamination of ready-to-use salad vegetables was evaluated. Sixteen products composed from rinsed and shredded lettuce, carrot and various mixed vegetables purchased in supermarkets from Malopolska region were investigated. Samples, coming from five producers, were examined at different times of their shelf-life. The following analysis were performed: total bacteria plate count, yeasts and moulds, coliforms as well as Salmonella and Listeria monocytogenes presence. Total bacteria plate count of investigated samples ranged from 106 to 108 cfu/g and the last value was determined in 9 from 16 samples. Yeast and mould amount was between 103 and 106 cfu/g. Most probable number (MPN) of coliforms was at a level from <3 to >1100. Neither Salmonella nor Listeria monocytogenes bacteria were detected in analysed material.
RTU salad vegetables, microbiological quality, Listeria monocytogenes, Salmonella