Antimicrobial efficacy of natural extract against and in "Piel de Sapo" melon juice.

Background: The minimal inhibitory concentration (MIC) of an aqueous extract of with reported functional properties (PLX) was determined on two strains of () belonging to serogroups commonly associated with foodborne illnesses ( O157:H7 ATCC 700728 and O111 isolate 172) in vegetable products and two control strains for antimicrobial tests assays ( ATCC 25922 and - ATCC 29212).

Results: Mean MIC values at standard pH (7.4) in broth for the strains tested ranged from 4,444 µg/ml (35ºC) to 1,250 µg/ml (10ºC) and to 182 µg/ml (4ºC).