August 2017

Anaerobic and micro-aerobic 1,3-propanediol production by engineered Escherichia coli with dha genes from Klebsiella pneumoniae GLC29

1,3-Propanediol (1,3-PDO) is a bifunctional molecule, and used in applications similar to those of ethylene glycol, propylene glycol, 1,3-butanediol and 1,4-butanediol. The use of glycerol as a feedstock is an alternative to reduce production costs for both 1,3-PDO and biodiesel, since biodiesel glycerol can be used for the production of 1,3-PDO by bacteria. Also, using metabolic engineering, it is possible to...

Author(s): Paulo M. A. Neto, Lorenzo E. R. P. P. L. D. B. Briganti, Donovan Layton, Michael Wierzbicki, R. Adam Thompson, Henrique Ferreira and Jonas Contiero

August 2017

Obtaining mutant fungal strains of Aspergillus niger with high production of fructooligosaccharides (FOS) using ultraviolet light irradiation

A strain of Aspergillus niger PR-142 native to northern coast of Peru was subjected to successive processes of mutagenesis by ultraviolet light (UV) irradiation at 253.7 nm to increase the production of fructooligosaccharides (FOS). An initial selection was made by considering the mutants with increased invertase activity followed by the measurement of β-fructosyltransferase (FTase) activity both in mycelium and...

Author(s): Boris Gutarra Castillo, Marina Díez-Municio, Juan Cisneros de la Cruz and Javier Moreno