Comparative Effects of Food Preservatives on the Production of Staphylococcal Enterotoxin I from Staphylococcus aureus Isolate

Figure 3

Influence of different food preservatives on extracellular SEI secretion. S. aureus H4 was administrated with sodium nitrite, polylysine, chitosan, or tea catechin, respectively, as described above. At the 24th-hour incubation, the level of SEI in supernatant of S. aureus H4 was tested by double-antibody sandwich ELISA. (a) The level of SEI produced by per bacterium. (b) The concentration of total extracellular SEI (, , and ).

(a)

(b)