3.Result and discussion
As shown in the PCA plot (Figure 2a) the EN is able to discriminate the vegetable soups contaminated (C) by
E.hormaechei from the control samples uncontaminated (NC) after 24 hours of incubation. All contaminated
samples for less than 24 hours, are positioned together with the NC samples in the right part of Figure 2a. The large
range of EN patterns of contaminated samples is due to different final concentrations depending on different
inoculum concentration and microorganism grow. As can be seen the EN can perfectly detect the spoilage at 24h of
growth time. The classification 5CV-LDA classification performance is 98.8%