Growth kinetics and yield study on Chlorella pyrenoidosa in chemically defined media

Conference · Sat Jan 01 04:00:00 EST 1983 · Dev. Ind. Microbiol.; (United States)

OSTI ID:6082552

Joung, J J; Akin, C

A Chlorella culture free from heterotrophic bacteria was obtained by eliminating the bacteria with successive use of antibiotics and agar plants. The purified Chlorella was cultured in chemically defined media. Under a photon flux (16.7 mw/cmS) similar to insolation, both heterotrophic and mixotrophic cultures were luxurious but the growth rates of autotrophic cultures were reduced substantially. The Chlorella culture grew most rapidly at 30 C in the absence of heterotrophic bacteria, and the highest specific growth rates were 1.43 x 10 h and 0.46 x 10 h for mixotrophic and autotrophic cultures, respectively. The highest photosynthetic efficiency over its growth period was 2.9% for autotrophic cultures. Elimination of heterotrophic bacteria from Chlorella cultures improved the algal growth rate as well as biomass yield significantly. A parasite of 0.1- m size was identified. The motile microorganism played an important role in the growth of the Chlorella and appeared to be common to green algae. 16 references, 2 tables.

• Research Organization: Standard Oil Co., Naperville, IL
• OSTI ID: 6082552
• Report Number(s): CONF-8208164-
• Conference Information: Journal Name: Dev. Ind. Microbiol.; (United States) Journal Volume: 24
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
140504 -- Solar Energy Conversion-- Biomass Production & Conversion-- (-1989)
550700* -- Microbiology
59 BASIC BIOLOGICAL SCIENCES
ALGAE
CHEMICAL REACTIONS
CHLORELLA
DATA
EXPERIMENTAL DATA
GROWTH
INFORMATION
MICROORGANISMS
NUMERICAL DATA
PARASITES
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PLANTS
RESOURCE POTENTIAL
SYNTHESIS
UNICELLULAR ALGAE