Schiff bases were kept at room temperature in dry conditions and they were dissolved 20 mg/ml in double distilled water and complexes were dissolved in DMSO.
It was then poured into the plates and allowed to solidify.
Biomimetic, Amino component, Metal complex, Antimicrobial. Schiff bases are compounds containing azimethine group (-CH=N-).
They are the condensation products of ketones or aldehydes with primary amines (Scheme 1). Formation of Schiff base generally takes place under acid or base catalysis or with heat.
The transmittance max observed minimum in the case of Salicylaldehyde Glycine Zn (II) complex indicating the maximum attachment of Zn (II) ion to this schiff base ligand.
IR spectral studies of Schiff bases and their Zn complexes The IR spectrum of ligands showed a band at a region of 1580-1680, (Figures 4-6), which is due to C=N stretching frequency, a key feature of Schiff base.
Schiff base metal complexes with biomolecules have been widely studied because they have a wide range of activities including industrial, anticancer, antiviral and herbicidal applications [17-19].
Here we report the syntheses, characterization, antimicrobial studies and complexation behaviour of three Schiff bases obtained from salicylaldehyde with 3-amino benzoic acid, Glycine and D-Alanine .
The UVVisible spectra of complexes show a peak in the region of 275–300 nm.
This is due to the complex formation by Zn (II) ion.
Mix the Salicylaldehyde solution with proper amino acid solution and mixture is stirred.
By gradual addition, add sodium hydroxide solution to each mixture during a period of 30 minutes.
Antimicrobial activity: Antimicrobial substance kills or prevents the growth of microorganisms and metal complexes showed very good antimicrobial activity. coli is a gram-negative bacterium found in the lower intestine of humans.