Adaptation of the Freshwater Bloom-Forming Cyanobacterium to Brackish Water Is Driven by Recent Horizontal Transfer of Sucrose Genes.

is a bloom-forming cyanobacterium found in eutrophic water bodies worldwide. blooms usually occur in freshwater; however, they have also been reported to occur in brackish water. Because often produces the cyanotoxin microcystin, they are a major concern to public health and environment.

Selective production of lactic acid in continuous anaerobic acidogenesis by extremely low pH operation.

The selective production of lactic acid by anaerobic acidogenesis with low pH control was examined using a chemostat culture. By decreasing culture pH to 3.5 in a chemostat culture containing mixed microbial populations for anaerobic acidogenesis, heterolactic fermentation became dominant, resulting in the selective production of lactic acid and ethanol.

Microbial xylitol production from corn cobs using Candida magnoliae.

Microbial production of xylitol from corn cobs using Candida magnoliae was experimentally investigated. Approximately 25 g-xylose/l solution was obtained from 100 g-corn cobs/l solution by hydrolysis using 1.0% sulfuric acid at 121 degrees C for 60 min.

Effective cell harvesting of the halotolerant microalga Dunaliella tertiolecta with pH control.

An effective method for cell harvesting of the halotolerant microalga, Dunaliella tertiolecta ATCC30929, was investigated. By increasing the pH of the culture broth using NaOH solution, suspended D. terfolecta cells rapidly coagulated and settled within a few minutes, which allowed simple harvesting of the concentrated cells from the culture broth.