Department of Chemistry, Periyar University, Salem-636 011, Tamilnadu, India E-mail : chemsujatha@gmail.com Green leafy vegetables attain an important place among the food crops as they possess intense amounts of essential proteins, β-carotene and carbohydrates for trade. Allmania nodiflora [F : Amaranthaceae] is chosen to investigate their phenolic, flavonoid, carbohydrate, protein, DPPH-radical scavenging activity, reducing power accompanied with GC-MS, for their various solvent extracts [hexane, ethyl acetate, acetone, methanol]. Results indicate that methanol extract of Allmania nodiflora have marked amount of total phenolic and total flavonoid which could be responsible for antioxidant activity. Among the extracts assayed, methanol extract exhibited significant activity, thereby presenting its antioxidant activity potential by scavenging free radicals. This was evident from the SC50 values against standard ascorbic acid. In competence, better significance was reported by acetone fractions, which has articulated in identifying numerous constituents through GC-MS. Hence, this present study would endow the scientific validation for their medicinal, therapeutic and dietary applications.