1. Department of Biomedical and Biotechnological Sciences, Microbiology Section University of Catania, Catania, Italy;
2. Department of Drug Science, Biochemistry section University of Catania, Catania, Italy;
3. Department of Drug Science, Medicinal Chemistry section University of Catania, Catania, Italy;
4. Department of Biomedical and Biotechnological Sciences, Biochemistry section, University of Catania, Catania, Italy;
5. Department of Health Sciences, University “Magna Graecia” of Catanzaro, Catanzaro, Italy