Microbiological state of precut mixed salads: shelf life, hygienic state and characteristics of some pathogens

alimentos preparados analyse microbiologique cell counting cold storage contamination enterobacteriaceae envenenamiento flora microbiana flore microbienne hortalizas de hoja hygiene intoxication keeping quality leaf vegetables magasin de commerce maladie transmissible par aliment microbial flora microbiological analysis poisoning portion packs prepared foods pseudomonas recipiente calibrado refrigeration equipment retail marketing shops stockage au froid system temperatura temperature tiendas venta al por menor