Phytochemical Screening, Atomic Absorption Spectroscopy, GC-MS and Antibacterial Activities of Turmeric (Curcuma longa L.) Rhizome Extracts

Aim: The study evaluates the phytochemical screening, atomic absorption spectroscopy (AAS), Gas chromatography–mass spectrometry (GC-MS) and antibacterial activities of aqueous methanolic extracts turmeric (Curcuma longa) rhizome against Escherichia coli (E. coli) Staphylococcus aureus (S. aureus). 
 Place Duration Study: was carried out for six months in 2020 Biochemistry
 Laboratory, Department Chemical Sciences, College Basic Lagos State University Science Technology (LASUSTECH), Ikorodu, State, Nigeria.
 Methodology: GC-MS AAS were determined using standard methods. Antibacterial evaluated by disc diffusion agar well minimum inhibitory concentrations (MIC) bactericidal concentration (MBC) procedures. Results: showed presence phytochemicals like tannins, flavonoids, alkaloids, reducing sugar saponin. Mineral composition analysis shows that plant contains Na, Ca, Mg, K Fe. Nineteen compounds identified with a R-Turmerone being most abundant peak area 50.05%. results revealed at 250 500 mg/mL both root extract C. longa sensitive to organism, zone inhibition 22.29±2.35, 29.56±2.23, 21.79±1.04 29.95±1.83 E. 22.31±1.59, 28.67±1.42, 22.96±0.96 30.13±1.94mm S. respectively. Azithromycin has values ranges from 19.35±1.02 32.03±1.23 mm organisms tested 12.50 25.00 susceptible erythromycin, ciprofloxacin, roceplin, streptomycin resistant chloramphenicol septrin only aureus. MIC on 62.50, 31.25, 31.250 15.625 while their MBC 250.00, 62.500, 62.500 31.2500 mg/ml MBC/MIC show had effects. Conclusions: Curcuma essential minerals, phytochemicals, activity may prevent pathogenic diseases caused