Physiological studies on microalgal culture additives to optimize growth rate and oil content.

Insulin, in nature, has a stimulatory effect on microorganisms. These effects include the acceleration of sugar metabolism, triacylglycerol anabolism, growth rate, and formation of oils. We also observed that insulin may cause indirect activation of triacylglycerol lipase by forcing the cell to permanently require an energy source.

Shewanella haliotis sp. nov., isolated from the gut microflora of abalone, Haliotis discus hannai.

A motile, rod-shaped, pink-orange pigmented bacterium, designated strain DW01(T), was isolated from the gut microflora of abalone collected from the South Sea (Republic of Korea). Cells were Gram-negative, facultatively anaerobic, catalase- and oxidase-positive. The major fatty acids were iso-C(15 : 0) (17.