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A bioreactor is any manufactured device or system that supports a biologically active environment. [1] In one case, a bioreactor is a vessel in which a chemical process is carried out which involves organisms or biochemically active substances derived from such organisms.
The Peoria plant was the largest of the three. It used molasses as feedstock and had 96 fermenters with a volume of 96,000 gallons each. [8] After World War II, ABE fermentation became generally non-profitable, compared to the production of the same three solvents (acetone, butanol, ethanol) from petroleum. [1]
The yeast genome is highly accessible to manipulation, hence it is an excellent model for genome engineering. The international Synthetic Yeast Genome Project (Sc2.0 or Saccharomyces cerevisiae version 2.0 ) aims to build an entirely designer, customizable, synthetic S. cerevisiae genome from scratch that is more stable than the wild type.
The definition of fermentation has evolved over the years. [1] The most modern definition is catabolism, where organic compounds are both the electron donor and acceptor.
One of the most important features of chemostats is that microorganisms can be grown in a physiological steady state under constant environmental conditions. In this steady state, growth occurs at a constant specific growth rate and all culture parameters remain constant (culture volume, dissolved oxygen concentration, nutrient and product concentrations, pH, cell density, etc.).
In 1906, Karl Imhoff created the Imhoff tank; [141] an early form of anaerobic digester and model wastewater treatment system throughout the early 20th century. [142] [143] After 1920, closed tank systems began to replace the previously common use of anaerobic lagoons – covered earthen basins used to treat volatile solids. Research on ...
These animals are hindgut fermenters. [9] This means fibrous food material is fermented after the small intestine (in the cecum and/or colon). Small animals (discussed in this article) are classified as cecal fermenters while large animals are colonic fermenters. [10] They all have one stomach (monogastric). [10]
Diagram showing a yeast cell Several yeasts, in particular S. cerevisiae and S. pombe , have been widely used in genetics and cell biology, largely because they are simple eukaryotic cells, serving as a model for all eukaryotes, including humans, for the study of fundamental cellular processes such as the cell cycle , DNA replication ...