The effects of nutrients and temperature on biomass, growth, lipid production, and fatty acid composition of Cyclotella cryptica Reimann, Lewin, and Guillard

Conference · Tue Dec 31 04:00:00 EST 1991

OSTI ID:431590

Sriharan, S ^[1]; Bagga, D ^[2]; Nawaz, M ^[3]

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1. Virginia State Univ., Petersburg, VA (United States)
2. Univ. of Montevallo, AL (United States)
3. National Center for Toxicological Research, Jefferson, AR (United States)

Batch cultures of Cyclotella cryptica Reimann, Lewin, and Guillard were grown at two different nutrient (nitrogen/silica) levels and at two different temperatures (20 and 30{degrees}C). Biomass and cell yields decreased with decreased levels of both the nutrients (nitrogen and silica) at 20 and 30{degrees}C; whereas lipids (total, neutral, and polar) increased with decreased levels of nutrients at these two temperatures. Changes in fatty acid composition were also noted; the diatoms produced increased amounts of fatty acids C14:0 and C16:0 when grown in nutrient-deficient medium. The influence of nutrient stress and temperature is discussed.

• Research Organization: Oak Ridge National Lab., TN (United States); Badger Engineers, Inc., Tampa, FL (United States); Solar Energy Research Inst., Golden, CO (United States)
• OSTI ID: 431590
• Report Number(s): CONF-900512--
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
55 BIOLOGY AND MEDICINE
BASIC STUDIES
ALGAE
BIOCHEMISTRY
BIOLOGICAL STRESS
BIOMASS
BIOSYNTHESIS
BIOTECHNOLOGY
DIATOMS
LIPIDS
LIQUID FUELS
NUTRIENTS
TEMPERATURE DEPENDENCE