Category Archives: A Look Back at the U. S. Department of Energy’s Aquatic Species Program: Biodiesel from Algae

D. primolecta

The maximum productivity observed for this species (12.0 g dry weighHm-2^d-1 ) occurred during continuous culture at 60% full sunlight under N-sufficient conditions. Doubling the light intensity lowered the productivity to 6.1 g dry weighHm-2^d-1. The chemical composition of N — sufficient cells (as an average percentage of total cell dry weight) was 64.2% protein, 12.6% carbohydrate, and 23.1% lipid. […]

Read more

Cloning of the Acetyl-CoA Carboxylase Gene from C. cryptica

Work on the key role of ACCase in lipid biosynthesis in other plant and animal systems, suggested that this enzyme might be a viable target for genetic manipulation in order to increase lipid production in microalgae. This notion was further supported by the work at SERI that showed changes in ACCase activity in Si-starved C. cryptica cells.

Read more

Technical Highlights of the Program

Applied Biology і A unique collection of oil-producing microalgae. The ASP studied a fairly specific aspect of algae—their ability to produce natural oils. Researchers not only concerned themselves with finding algae that produced a lot of oil, but also with algae that grow under severe conditions—extremes of temperature, pH and salinity. At the outset of the program, no collections existed […]

Read more

Collection and Screening of Microalgae—Conclusions and Recommendations

The collection, screening, and characterization of microalgal strains represent a major endeavor of ASP researchers during the 1980s. More than 3,000 algal strains were collected from sites within the continental U. S. (Figure II. A.5.) and Hawaii or obtained from other culture collections. This was the first major collection of microalgae that emphasized strains suitable for cultivation in saline waters […]

Read more
1 12 13 14