Abstract: Methods of growing organisms in the Thraustochytriaceae family using a supply of at least one of acetate and acetic acid as an organic carbon source are described. Embodiments include using acetate or acetic acid in combination with other organic carbon sources and with a pH auxostat system.

Abstract: Disclosed are techniques and systems for producing microbials having anaplerotic oils that are rich in odd-chain fatty acids, and other beneficial components, at higher concentrations than those present in other natural dietary sources of OCFA, at lower cost, and higher production yield. Such compositions can comprise pentadecanoic and heptadecanoic fatty acids. The techniques described herein include methods for producing and deriving such compositions rich in odd-chain fatty acids from microbials, including microalgae and yeasts/fungi.

Abstract: Methods of culturing microorganisms in non-axenic mixotrophic conditions are disclosed. A method of culturing microalgae mixotrophically and controlling bacterial contamination with an acetic acid/pH auxostat system is specifically described. Methods of culturing microalgae mixotrophically with an increased productivity through an increase in oxygen transfer to the culture are also described.

Abstract: Methods of culturing mixotrophic microorganisms in a state of balanced gas composition are disclosed. Parameters of a culture of mixotrophic microorganisms may be controlled to reduce the requirements of externally supplied gases and optimize the production and consumption of gases within the culture by the phototrophic and heterotrophic metabolisms of the mixotrophic microorganisms.

Abstract: Methods of culturing mixotrophic microorganisms in a state of balanced gas composition are disclosed. Parameters of a culture of mixotrophic microorganisms may be controlled to reduce the requirements of externally supplied gases and optimize the production and consumption of gases within the culture by the phototrophic and heterotrophic metabolisms of the mixotrophic microorganisms.

Abstract: Methods and apparatus for culturing microorganisms are described, including culturing in mixotrophic culture conditions. A bioreactor array with multiple culture vessels with independently controllable inputs is used to culture similar cultures of microorganisms in which at least one parameter differs from other culture vessels in the bioreactor array.

Abstract: Methods and apparatus for culturing microorganisms are described, including culturing in mixotrophic culture conditions. A bioreactor array with multiple culture vessels with independently controllable inputs is used to culture similar cultures of microorganisms in which at least one parameter differs from other culture vessels in the bioreactor array.

Abstract: Methods of culturing microorganisms in combinations of phototrophic, mixotrophic, and heterotrophic culture conditions are disclosed. A culture of microorganisms may be transitioned between culture conditions over the life of a culture in various combinations, utilizing various conditions in a sequential manner to optimize the culture for growth or product accumulation.

Abstract: Methods of culturing microorganisms in non-axenic mixotrophic conditions are disclosed. A method of culturing microalgae mixotrophically and controlling bacterial contamination with an acetic acid/pH auxostat system is specifically described. Methods of culturing microalgae mixotrophically with an increased productivity through an increase in oxygen transfer to the culture are also described.

Abstract: Methods of treating contamination, particularly bacterial contamination, in an open culture of microalgae with organic carbon are described herein. The methods comprise reducing the pH of a culture for a period of time and then raising the pH of the culture, wherein the culture comprises the presence of a first acid and the culture is contacted with a second acid to reduce the culture pH from a first pH value to a second pH value. The culture is maintained at the second pH value for at least 5 minutes before the culture pH is raised from the second pH value by contact with a base.