Biodiesel production was examined with Scenedesmus obliquus in a recirculatory aquaculture system with fish pond discharge and poultry litter to couple with waste treatment. Lipid productivity of 14,400 liter ha(-1) year(-1) was projected with 11 cultivation cycles per year. The fuel properties of the biodiesel produced adhered to Indian and international standards.

Petra Langlotz, Wolfgang Wagner, and Hartmut Follmann Fachbereich Chemie der Philipps-Universität, Biochemie, Hans-Meerwein-Straße. D-3550 Marburg, Bundesrepublik Deutschland Z. Naturforsch. 41c, 979—987 (1986); received August 1/September 19, 1986 Am ino Acid Composition, A lgae, Ribonucleotide Reductase, Scenedesmus obliquus, Thio­ redoxin A comprehensive thioredoxin profile of Scenedesmus ob...

Two freshwater and two marine alg;tl species were grown in intensive contiimous cultures at a fixed dilution rate of 0.5 ·day -I, but at varying pH levels in the range 7.6 to 1C.6. Both freshwater species, Scenedesmus obliquus (Turp.) Kutz. and Chlorella vulgaris Beij., grew up to pH 10.6 although C. vulgaris was more adversely affected by alkaline pH than was Scenedesmus obliquus. Of the marin...

The production of d-lactic acid, a major fermentation product of Scenedesmus obliquus strain D(3), is inhibited by light. This inhibition has been observed in the wild type as well as in Bishop's mutant 11. However, in mutant 8, which lacks photophosphorylation, light stimulated the formation of d-lactic acid.

Polyamines, Photosynthetic Apparatus, Photoinhibition, Photoadaptation, Scenedesmus obliquus In the unicellular green alga Scenedesmus obliquus the level of photoinhibition and the recovery of the cells after reversal to the initial light conditions in relation to the pre-photoadaptation of the culture to low, medium and high light intensity was determined. The changes in the photosynthetic pig...

approved: Redacted for Privacy (Norman I. Bishop) Three DCMU resistant mutants of the green alga Scenedesmus obliquus D3 are characterized. The mutants exhibit a ten fold greater resistance to DCMU than the wild type strain; this is comparable to the level of DCMU resistance detected in other DCMU resistant algae. In whole cell reactions, as well as isolated chloroplast reactions, the resistanc...

The effect of different photoperiods: 24 h illumination and a 12:12-h light/dark (12L:12D) cycle on the growth rate and biomass productivity was studied in five algal species: Neochloris conjuncta, Neochloris terrestris, Neochloris texensis, Botryococcus braunii and Scenedesmus obliquus. The green microalgae examined differ in the reproduction mode. Continuous illumination stimulated the growth...

This study focused on the use of microbial potential for metal ion removal. Scenedesmus obliquus and Synechocystis sp. PCC 6803 were compared for accumulation of Cu in batch mode. During time course accumulation, S. obliquus accumulated Cu up to 124 μg mg -1 dry wt after 1h of incubation, whereas for Synechocystis sp. PCC 6803 it reached up to 64.9 μg mg -1 dry wt after 2h. Low biomass concentr...

Scenedesmus obliquus is a green alga whose cells have a well-defined nucleus, and contain a chloroplast. Even when grown in the dark these cells retain their chloroplast. Because of the toughness of the cell wall, extraction of tRNA requires either vigorous homogenization of the cells before phenol extraction or prolonged phenol extraction at 60°C. Determination of the amount of tRNA and its pu...