Starvation of green algae Scenedesmus quadricauda to stimulate the production of total lipid and total protein

الملخص EN

In this study Identification and Isolate the Species of green algae of Scenedesmus quadricauda belonging to the Division Chlorophyta, Ch-10 culture media was used for their cultivation.

Determine the effects of the phosphorus and nitrogen deficiencies (50% phosphorus ,50% nitrogen , 100% nitrogen , 50% nitrogen plus phosphorus) on the lipid and protein contents was studies, in suitable laboratory conditions (25 ±2C°, 200µE/mP2P/sec) for 16:8 hrs.

Light: dark and harvested culture end of the exponential phase.

Highest lipid accumulation of 33 % was recorded in the culture without nitrogen (100%N),also the lowest dry Weight 0.15mg/l in the same treatment .protein and lipid values found as 42.8% and 15.23%, for the control group, respectively.

Also recorded at treatment (50% nitrogen plus phosphorus 50%) 24.1%, 15.23% lipid and protein content, respectively.