Screening and characterizing oleaginous microalgal species from the southeastern United States. Final subcontract report
The purpose of this study was to select and characterize promising algal species which tolerate high light intensities, temperature variations and accumulate lipids. Samples have been collected from freshwater and saltwater locations in the State of Alabama and intertidal regions of the Gulf of Mexico. Samples were screened through a multi-step process. Selected species: Cyclotella, Nitzschia, Chlorella, Scenedesmus and Ankistrodesmus, have been examined for growth requirements. Approximate cellular composition of these species was determined. This report describes accomplishments from February 1984 to January 1985. During this period, collection trips were made to Dauphin Island near the Alabama coast in the summer of 1984. Over sixty strains were isolated, and of these six were ranked as good growers. Two diatoms were isolated that are of particular interest because of their ability to accumulate high lipids. Cyclotella tolerates high temperatures (30/sup 0/-35/sup 0/C), grows at moderate salinities (15-25 parts per thousand), and with nitrogen stress accumulates 42% of its dry weight as lipid. Hantzschia is a large diatom that also grows well at elevated temperatures and full strength seawater. Hantzschia can accumulate as much as 66% of its dry weight as lipid. 29 refs., 12 figs., 2 tabs.
- Research Organization:
- Alabama A and M Univ., Normal (USA)
- DOE Contract Number:
- AC02-83CH10093;
- OSTI ID:
- 5803684
- Report Number(s):
- SERI/STR-231-2657; ON: DE85008787
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
09 BIOMASS FUELS
140504* -- Solar Energy Conversion-- Biomass Production & Conversion-- (-1989)
520100 -- Environment
Aquatic-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
550700 -- Microbiology
59 BASIC BIOLOGICAL SCIENCES
ALABAMA
ALGAE
AQUATIC SPECIES PROGRAM
ATLANTIC OCEAN
CARIBBEAN SEA
CHLORELLA
COASTAL WATERS
FEDERAL REGION IV
GROWTH
GULF OF MEXICO
LIPIDS
MICROORGANISMS
NORTH AMERICA
ORGANIC COMPOUNDS
PHOTOSENSITIVITY
PLANTS
SALINITY
SAMPLING
SCENEDESMUS
SEAS
SENSITIVITY
SURFACE WATERS
TEMPERATURE DEPENDENCE
UNICELLULAR ALGAE
USA
140504* -- Solar Energy Conversion-- Biomass Production & Conversion-- (-1989)
520100 -- Environment
Aquatic-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
550700 -- Microbiology
59 BASIC BIOLOGICAL SCIENCES
ALABAMA
ALGAE
AQUATIC SPECIES PROGRAM
ATLANTIC OCEAN
CARIBBEAN SEA
CHLORELLA
COASTAL WATERS
FEDERAL REGION IV
GROWTH
GULF OF MEXICO
LIPIDS
MICROORGANISMS
NORTH AMERICA
ORGANIC COMPOUNDS
PHOTOSENSITIVITY
PLANTS
SALINITY
SAMPLING
SCENEDESMUS
SEAS
SENSITIVITY
SURFACE WATERS
TEMPERATURE DEPENDENCE
UNICELLULAR ALGAE
USA