Chlorella vulgaris belonging to Chlorophyta and Nannochloropsis oculata belonging to Chrythophytawere used in the currentstudy to evaluate whether their successive indoor growth using industrial food waste (okara) as a growth medium enriched with organic carbon and nitrogenThe basic nutrient solutions were BG-II for Chlorella, while F2 was used for Nannochloropsis growth. Okara was used in four concentrations ( 25 , 50 , 75 and 100 ) verses to control and based on its initial nitrogen content. Original waste was diluted by 4 fold of tape water prior inoculation. The investigated parameters were dry weigh (g.l-1); total chlorophyll (mg.l-1) and total carotenoids (mg.l-1). Maximum dry weight of Chlorella was obtained with 25 of okara waste. As for Nannochloropsis, a slight increase was observed with all okara concentrations used. Lower okara concentration (25) enhanced chlorophyll accumulation by Chlorella vulgaris, while higher concentration (100) reached the maximum with Nannochloropsis oculata. Completely opposite pattern was observed with total carotene.
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