Acta Biotechnol. volume 19, issue 2, P179-186 1999 DOI: 10.1002/abio.370190214 View full text
J. Fiedurek

Abstract: Spores of Aspergillus niger were exposed to a pulsed electric field. After treatment by the electric field, the viability of the conidia of A. niger varied depending on the field strength, pulse width and frequency. In all cases, these parameters reduced the viability rate of the conidia from 2.0 x lo7 to a range from 6.2 x 10 to 8.5 x 10 sporedm1 (3.1 to 42.6%). After pulse treatment, the conidia were used as the inoculum for citric acid fermentation in shake flasks. The highest increase in citric acid yield…

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