Effect of non-ionic tensides on the growth of some soil bacteria

T. Cserháti, Zoltán Illés, Istvánné Nemes

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The effect of some nonylphenyl-ethylene oxide polymers on the growth of Bacillus megaterium, B. cereus var. mycoides, B. polymyxa, B. subtilis, Pseudomonas fluorescence and Azotobacter chroococcum was investigated in the concentration range 20-800 ppm with the agar diffusion method. The zones of inhibition, restricted growth and eventual stimulation were determined with a Shimadzu C-930 dual wavelength TLC scanner. The data matrix was evaluated by principal component analysis. A. chroococcum was insensitive to each tenside at each concentration. The growth of the other microorganisms was inhibited by the tensides. With B. megaterium and B. cereus var. mycoides stimulation was also observed. The effect of the non-ionic tensides decreased with increasing length of the hydrophilic ethylene oxide chain. This phenomenon can be explained by the assumption that the activity of tensides depends on their membrane-damaging effect. The bulky nonylphenyl group inserts between the apolar fatty acid chains disorganizing the membrane structure. The longer hydrophilic ethylene oxide chain modifies the distribution of tenside between the apolar and polar regions of the membrane, preferring the aqueous phase. This results in the decrease or loss of biological activity.

Original languageEnglish
Pages (from-to)115-118
Number of pages4
JournalApplied Microbiology and Biotechnology
Volume35
Issue number1
DOIs
Publication statusPublished - Apr 1991

Fingerprint

Surface-Active Agents
Bacteria
Ethylene
Soil
Ethylene Oxide
Soils
Oxides
Bacillus megaterium
Growth
Membranes
Membrane structures
Die casting inserts
Bacilli
Bioactivity
Polyethylenes
Fatty acids
Microorganisms
Principal component analysis
Plasmodiophorida
Azotobacter

ASJC Scopus subject areas

  • Microbiology (medical)
  • Microbiology
  • Bioengineering
  • Biotechnology

Cite this

Effect of non-ionic tensides on the growth of some soil bacteria. / Cserháti, T.; Illés, Zoltán; Nemes, Istvánné.

In: Applied Microbiology and Biotechnology, Vol. 35, No. 1, 04.1991, p. 115-118.

Research output: Contribution to journalArticle

Cserháti, T. ; Illés, Zoltán ; Nemes, Istvánné. / Effect of non-ionic tensides on the growth of some soil bacteria. In: Applied Microbiology and Biotechnology. 1991 ; Vol. 35, No. 1. pp. 115-118.
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