Table 4.

Highest growth potential (δ) (log₁₀ CFU/ml) among the batches for Escherichia coli and Enterococcus. faecalis strains used in this study, in “Piel de Sapo” plain melon juice and fortified with PLX^® (2,500 µg/ml) stored for 4 days at 4ºC

Bacterial strain	Highest growth potential (δ) (log10 CFU/ml)
	MJ				PLX®FMJ
	Time (days)				Time (days)
	1	2	3	4	1	2	3	4
Escherichia coli O157:H7	−0.05	0.05	0.21	0.25	−0.45	0.05	0.21	0.0
Escherichia coli O111	−0.22	0.08	−0.49	0.33	0.04	0.25	0.13	0.0
Escherichia coli ATCC 25922	0.13	0.16	0.56	0.27	0.13	−0.07	0.23	0.33
Enterococcus faecalis	0.54	0.32	0.41	0.65	0.49	0.28	0.49	0.87

δ ≤ 0.5 log₁₀, the melon juice is not able to support the growth of the bacteria. δ > 0.5log₁₀, the melon juice is able to support the growth of the bacteria (in bold). Growth potential (log₁₀ CFU/ml) is estimated as the difference in the media of results at one day of storage at 4ºC and the media of the results at the onset of the storage (0 days).

Abbreviation: MJ, plain melon juice; PLX^®FMJ, plain melon juice fortified with PLX^®.