The CBO in alginate films with 2% CBO without SBO decreased
~70% after 3 d storage compared to ~44% decrease in films prepared
with 2% CBO and 0.5% SBO. Therefore, the volatility of CBO may be responsible
for the reduced antibacterial activity of antimicrobial coatings
on cantaloupes during extended storage.Better inhibition of S. enterica
and L.monocytogenes by CBOwith SBO than CBO alone may be attributed
to better retention in the presence of SBO. The coating with alginate
only showed better survival of L. monocytogenes than the control. This
might be attributed to the water-binding ability of alginate coating to
provide a relatively moist environment to benefit the survival of bacteria.
The results in Fig. 3 suggest
that the coating with both CBO and SBO can provide a long-term effectiveness
in controlling the contaminating foodborne pathogens.