Triacylglycerol content, productivity and fatty acid profile in Scenedesmus acutus PVUW12.

DAMIANI, C.; POPOVICH, C.; CONSTENLA, D.; MARTINEZ, A.M.; DORIA, E.; LONGONI, P.; CELLA, R,; LEONARDI, P.

JOURNAL OF APPLIED PHYCOLOGY

SPRINGER

Año: 2013 vol. 25 p. 1 - 10

0921-8971

A detailed lipid characterization of Scenedesmus acutus PVUW12, with emphasis on the evaluation of triacyl- glycerols (TAGs) as a biodiesel feedstock, is presented.When algal cells were grown in nitrogen-free medium (N stress), a lipid increase was detected that was mainly due to TAG accumulation. In situ fluorescence measurements allowed the kinetics and extent of neutral lipid accumulation to be followed. Under N stress, the productivity of total lipids and TAGs increased significantly (80.99 and 63.74 mg L−1 day−1 , respectively) compared with controls (29.51 and 16.23 mg L−1 day−1 , respectively). Monounsaturated fatty acids were the major fraction and increased further