Impact of cadmium on some physiological and biochemical properties in green algae Scendesmus qudricauda

¹ College of Pharmacy, University of Babylon, Hilla, Iraq
² Department of Biology, College of Science, University of Babylon, Hilla, Iraq

^* Corresponding author: jasimsalman@uobabylon.edu.iq

Abstract

In biotechnology, bioremediation is the study of using live entities, including microorganisms, to remove toxins and contaminants from other surrounds and water. The experimental sought to evaluated microalgae’s ability to eliminate cadmium. The green algal species Scenedesmus quadricauda (Turpin) Brébisson was exposure to different Cd concentrations 0.05, 0.25, 0.5 mg/L. Investigated biochemical and physiological characteristics and antioxidant enzymes. Magnitude that 0.14 on the 8^th day at quantity (0.05) mg/l during 15^th day, the low value of growth rate (k) at (0.25) mg/l was 0. 06 during 15^th day. The results showed a strong influence of varying cadmium degradation by S. quadricauda: The first day’s magnitude that 1.10 (mg/g) 0.05 mg/l, while the highest magnitude was 20.14 (mg/g) on the 15^th with 0.5 mg/l. On the fifteenth day, that higher amount of chlorophyll-a was 16.72 (μg/ml) in 0.05 mg/l, while on the first day, it was 0.38 (μg/ml) in 0.25 mg/l. The maximum ROS magnitude was 0.049 on 15^th day with 0.05 mg/l Cd, but minimum was 0.013 on 8^th day with 0.5 mg/l. On the eighth day, the maximum magnitude the carbohydrate was 26.38 (μm/ml) with 0.25 mg/l. while the min magnitude 5.371(μm/ml) with 0.05mg/l during 15^th day.