10.22376/ijpbs.2019.10.1.p1-12 Volume 8 Issue 2 2017 (April - June) Microalgae serve as a predominant biological source for nutraceutical compounds along with the lipids and dyes.In the presentstudy, microalgal species from the Himalayan region, India have been evaluated for nutraceutical activities such as carbohydrate, protein, phenolic, flavonoid contents and DPPH activities. The evaluation showcased that lessThan i greaterThan Scendesmus dimorphus lessThan /i greaterThan was found to be the highest producer of protein andcarbohydrate than the lessThan i greaterThan Scendusmus quadricauda lessThan /i greaterThan and Chlorella sp. Among the microalgal species, lessThan i greaterThan Chlorella sp. lessThan /i greaterThan was found to have a more antioxidant, phenolics, flavonoid,and DPPH activities over lessThan i greaterThan Scendusmus lessThan /i greaterThan sp. y. Overall, the present study showcase the unexplored potential of microalgae for various nutraceutical activities. This unexplored algal source may serve as an untappedresource for nutritional and food-biotech communities to do research for its incorporation as a palatable feed material and also as an aquatic, and animal feed. AKANSHA BAJPAI, VIJAY KUMAR GARLAPATI, RAKESH SINGH GOUR AND ANIL KANT Micro algae; Scenedesmus sp.; Cholrella sp.; Nutraceutical; Anti-oxidant 174-178