## 3 Results
In other words, the different treatments did not significantly affect the number of LAB and _Bifidobacterium_ strains in the different potency classes (I-IV). The same conclusion was derived for the other two _E. coli_ strains, the _E. coli_ O157:H7 strain, the two _L. monocytogenes_ strains, the two _Salmonella_ spp. strains and the two _B. cereus_ strains (Table 3). In the cases of the above-mentioned pathogens, the different categories/treatments (A-C) did not affect the distribution of the inhibitory potency of the LAB and _Bifidobacterium_. However, the picture is totally different in the cases of the plant pathogens (two _E. carootox_ strains and one _Xanthomonas_ spp. strain) as well as the _L. innocu_ strain (ATCC 33090 TM). The inhibitory potency of the LAB and _Bifidobacterium_ strains was reduced from Category A to Category/Treatment B and from Category/Treatment C when the target cell was _L. innocua_ (\(\chi^{2}\) = 13.7806, \(p\) = 0,008029, df = 6).In all plant pathogens, Categories/Treatments B and C significantly reduced the inhibitory potency of the LAB and _Bifidobacterium_ strains (\(\chi^{2}\) = 18.2566, \(p\) = 0.005622, df = 6 for _E. carootox_ strain No. 1, \(\chi^{2}\) = 16.6212, \(p\) = 0.01078, df = 6 for _E. carootox_ strain No. 2 and \(\chi^{2}\) = 39.404, \(p\) < 0.0001, df = 6 for _Xanthomonas_ spp.). In order to compare the difference in susceptibility of the different pathogens and spoilage bacteria (target cells of the BLS) to the BLS of the LAB and _Bifidobacterium_ strains, a statistical comparison was made between pathogens of the same species and for the same category/treatment (Category A, or the same treatment as either B or C, but different target cell pathogens of the same species). For example, the three _E. coli_ strains showed no significant difference in the distribution of inhibitory potency to the various classes of BLS-producing LAB and _Bifidobacterium_ strains under the same category/treatment (A (untreated), B or C). However, when the _E. coli_ O157:H7 strain was introduced in the comparison scheme, the perspective changed dramatically. It appears that the latter strain is far more resistant (less susceptible) to the BLS than the other three _E. coli_ strains, no matter the treatment (\(\chi^{2}\) = 29.0012, \(p\) < 0.0001, df = 9 for Treatment A, \(\chi^{2}\) = 33.7242, \(p\) < 0.0001, df = 9 for Treatment B and \(\chi^{2}\) = 30.4993, \(p\) < 0.0001, df = 9 for Treatment C). The different treatments did not significantly affect the two _Salmonella_ strains with respect to the distribution of the inhibitory potency to the various classes of BLS-producing LAB and Bifidobacteria strains. The same conclusion is also valid for the two strains of _L. monocytogenes_. However, when the two _L. monocytogenes_ strains were compared to the _L. innocua_ (ATOC 33090 TM) strain belonging to the same genus, the differences became significant, showing that the _L. innocua_ (ATOC 33090 TM) strain is more resistant (less susceptible) to the BLS for Treatments B and C but not Treatment A (\(\chi^{2}\) = 10.0342, \(p\) = 0.039856, df = 4 for Treatment B and \(\chi^{2}\) = 14.8155, \(p\) = 0.0051, df = 4 for Treatment C). _B. cereus_ strains showed significant differences under all treatments with strain No. 1 being more vulnerable than strain No. 2 (\(\chi^{2}\) = 4.3457, \(p\) = 0.037102, df = 1 for Treatment A, \(\chi^{2}\) = 5.0178,\(p=0.025069\), df = 1 for Treatment B and \(\chi^{2}=7.1273\), \(p=0.007592\), df = 1 for Treatment C). Finally, the two _E. carotivora_ strains showed no significant differences for Treatments A and B but showed significant differences for Treatment C (\(\chi^{2}=9.7695\), \(p=0.020631\), df = 3), meaning that when the CFS of LAB and _Bifidobacterium_ strains was treated under Treatment C, _E. carotivora_ strain No. 1 was more vulnerable than strain No. 2. The CFS from the isolated LAB and _Bifidobacterium_ strains from oregano honey were treated with different enzymes to verify the proteinaceous nature of the inhibitory substances (Table 4).