10.22376/ijpbs.2019.10.1.p1-12 Volume 8 Issue 4 2017 (October - December) Primary screening of phytochemicals is a crucial step, in the detection of the bioactive compounds present in medicinal plants and consequently may lead to drug discovery and development. In the present study, important phytoconstituents of the selected medicinal plants lessThan i greaterThan Ocimum canum lessThan /i greaterThan ( lessThan i greaterThan O. canum lessThan /i greaterThan ) and lessThan i greaterThan Costus igneus lessThan /i greaterThan ( lessThan i greaterThan C. igneus lessThan /i greaterThan ), were reported in order to relate their presence with bioactivities of the plants. Three different solvents namely n-hexane, ethylacetate and methanol according to their increasing polarity were used for extraction of phytoconstituents from the leaf part of both the plants. Qualitative phytochemical analysis of leaf extract was performed for the presence of triterpenoids, tannins, glycosides, sterols, alkaloids, flavonoids, carbohydrates, proteins and organic acids. Further quantitative analysis was conducted to determine the amount of total phenolics, total flavonoids, total alkaloids and total antioxidant activity of the phytocostituents. There was significant difference between the presence and absence of different phytocompounds in various leaf extracts. The total phenolics content was found to be maximum in the methanolic extracts of both the plants. The total flavonoid content was found to be maximum in the hexane extract of lessThan i greaterThan O. canum lessThan /i greaterThan and ethylacetate extract of lessThan i greaterThan C. igneus. lessThan /i greaterThan Furthermore, the total antioxidant capacity of lessThan i greaterThan O.canum lessThan /i greaterThan was found to be higher than lessThan i greaterThan C. igneus lessThan /i greaterThan KUMARI SMITA , S. K. SARANGI , K. MANJUNATH Ocimum canum, Costus igneus; Secondary metabolites, Antihyperglycemic, Antioxidant, Phenolic, Flavonoid 212-218