Abstract

The rate of degradation of the alkyl chain of alkylbenzene sulphonates, carried out by pure cultures of Pseudomonas fluorescens and Aspergillus sp. has been examined in the presence of one of ten suitably selected aliphatic or aromatic compounds. It has been established that most of tested compounds decrease in different degree surfactant-degradative ability of the strains. However, β -Ketoadipic acid possesses an activating effect on the process. The authors explain this phenomen by inclusion of possible inductive mechanisms. In Modell-Laborversuchen wurde die Abbaurate der Alkylkette bei den Alkylbenzolsulfonaten in Anwesenheit einiger aliphatischer und aromatischer Verbindungen untersucht. Eingesetzt wurden Pseudomonas fluorescens und Aspergillus sp. Es wurde festgestellt, daß die meisten der untersuchten Verbindungen einen hemmenden Einfluß auf das Abbauvermögen der Teststämme haben. Die ß -Ketoadipinsäure übt dagegen eine aktivierende Wirkung aus, die auf den Einfluß möglicher induktiver Mechanismen zurückgeführt werden kann.

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