Phytochemical and spectroanalytical characterizations of some plants extract as green corrosion inhibitors

An attempt were made to characterize the stems of three plant extracts of acacia sengalensis (gum arabic) (as),acacia tortillis (umbrella thorn) (at) and grewa venusta (wild jute)(gv) plants by quantitative analyses (phytochemical screening),atomic absorption spectrometry (aas),fourier transforms infrared spectroscopy (ft-ir) and gas chromatography-mass spectrometry (gc-ms) techniques. the plants extracts were extracted in 1.5 litres of 70% ethanol and 30% distilled water as solvent using maceration method. atomic absorption spectrophotometry (aas) was used to determine the concentration of metallic ions in the plants. ft-ir was carried out using model-8400s spectrophotometer schmadzu machine. gc-ms model 2010 plus schmadzu was also used to analyze the extracts. the phytochemical screening revealed that the extracts of the plants contain tannins,alkaloids,flavonoids,saponins,glycosides and volatile oils in varying amounts. equally,the results of aas revealed the presence of metallic elements of ca,mg,cr,mn,co and zn in the extracts of the plants. the ft-ir and gc-ms analyses revealed the presence of hydroxyl (oh),amino (nh),acetylene (≡ch),aliphatic (methyl and methylene (ch3,ch2)),aromatic compounds such as methyl ester (c19h36o2),1,2-benzenediol (c6h6o2) and 3-tert-butylsulfanyl-4 (c9h10f6n2s). accordingly,the presence of phyto-constituents most especially those containing heteroatoms such as o,n,s and aromatic functional groups that have been found to be present in the plant extracts are indication of their potentials for use in the formulation of organic inhibitors for materials protection. © 2017 university of mohammed premier oujda morocco.