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Appl Environ Microbiol. 1969 January; 17(1): 7-9
Copyright © 1969 American Society for Microbiology. All Rights Reserved.

Retting of Flax by Aspergillus niger

^a Laboratory of Industrial Microbiology, School of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil

ABSTRACT

In this study, retting was carried out by Aspergillus niger. The pH, galacturonic acid (GA), and total reducing sugar were determined; the end point was identified by the classic empirical processes and by the maximal GA content of the retting water. The process gave clear and resistent fibers, and the retting time was similar to that of current industrial processes with bacterial enzymes. Control of total acidity was not required, since the pH remained close to neutrality throughout the entire process.

¹ Fellow of Research Council, Federal University of Rio de Janeiro, Brazil.