Unsymmetrical Schiff baseH 2 L 1 =2-((8-((E)-1-((2-hydroxy phenyl) ethylidene amino) naphthalen-1ylimino) methyl)-6-methoxyphenol and H 2 L 2 =1-((E)-(8-((E)-1-(2-hydroxy phenol) ethylidene amino) naphthalen-1-ylimino)methyl)naphthalen-2-ol which derived from 1,8-diaminonaphthalene and 2-hydroxy acetophenone and then with 2-hydroxy-3-methoxy benzaldehyde or 2-hydroxy-1naphthaldehyde and their complexes of the type [M L n ], where n=1,2 and M=Co(II) Ni(II),Cu(II)and Zn(II) have been synthesized.Adduct complexes of the type [ML n (py) 2 ] were also prepared in(1:2)(complex: py) molar ratio. The complexes and adducts were characterized by elemental analysis (C.H.N), metal content, (IR,UV-Vis, 1 H-NMR)spectroscopy, conductivity and magnetic measurements. The resulting data suggested that the Schiff bases containing ONNO donor atoms act as dibasic tetradentate ligands through coordination with metal ions. Conductivity data in DMF solution showed that all complexes are non-electrolyte. Magnetic moment and electronic spectra dada indicate that the complexes have either squar planer or octahedral geometry, the ligands and their complexes gram negative bacteria (Salmonella typhi andEscherichia coli).

Leather industries covers a wide chain of production and indirectly contributes to the economic flow. The different stages used in leather processing led to produce huge solid waste volumes. Because of the great effectiveness of amino acids as naturally chelates for minerals, the present study was carried out to recycling leather waste into its protein hydrolysate by CaO hydrolysis. The Leather protein hydrolysates (LPHs) was used to prepare metal-leather protein hydrolysate chelates (Cu2+-, Zn2+-& Fe2+-LPHCs) and some of their physical properties (i.e. λ-max, FTIR spectra, color, melting point) and biochemical properties as its antibacterial activity, as well as using as micronutrient elements for plant were evaluated. Results showed that the Cu2+-LPHC gave the highest value of melting point and λ-max than other chelates. All chelates shifted the vibration bands toward a higher frequency than LPH/CaO. Metal-leather protein hydrolysate (M-LPHCs) had antibacterial activities against E. coli, B. cereus and Micrococcus spp. mostly with Zn-LPHC and Fe-LPHC. These complexes also increased the growth characteristics and mineral absorption of spinach plants in hydroponic nutrient solution than that of mineral salts (CuSO4, ZnSO4 and FeSO4). Finally, the study concluded that M-LPHCs can be used as antimicrobial agent, micronutrients for plant and support the minerals bioavailability in animals.

The activity of acid phosphatase has been estimated in parasitic helminthes, including Fasciola hepatica , Moniezia benedeni and Dirofilaria immitis. Acid phosphatase found to be active in extracts of all these parasites. The activity of acid phosphatase in these parasites was found to be inhibited by tartrate resistant and varified in response to pH and K m values . The results suggests that the activity of acid phosphatase could be associatedwith the surface membrane of these parasites.