Translation of "Microbial degradation" in German

Also, substances contained in the grain are lost in the form of gaseous and steam-volatile metabolites due to microbial degradation.

The saturated solutions are biocidal and long-term stable against microbial degradation.

In biogas installations, methane is produced by a microbial process for degradation of organic substances.

The possibility of microbial degradation of concrete has not been considered in this report.

The fragmentation of polymers has resulted in increased microbial degradation.

Investigations of microbial degradation were undertaken using soil from an actual abandoned military site.

Microbial pollutant degradation represents a particularly natural method for reducing pollution.

The microbial degradation of hydrocarbon always takes place in watery phase.

These findings are in line with the respective microbial degradation results.

Furthermore, the microbial degradation activity in historical oak populations is substantially lower.

Selectively promoted microbial degradation prevents the spread of contamination in aquifers.

However, this (abiotic) decomposition of the polymer tended to be less than the actual microbial degradation.

Such measures aim either to extract the contaminants from the source itself or to use microbial degradation to convert them into harmless substances.

Both a microbial sulphate reduction and microbial methanogenic contaminant degradation were observed.

In order to ensure the maintenance of drinking water quality, a combination of activated carbon adsorption, microbial degradation and ozonisation is recommended.

A combination of remediation methods with controlled microbial degradation processes often represents the more cost-effective and expedient alternative.

For the production of 17-C-steroid-a-propionic acid compounds by microbial side chain degradation on 17-C-side chain steroid substrates wild strain microorganisms selected in predetermined manner are subjected to a multi-stage mutation and selection.

The subject is furthermore a process for the preparation of 17-C-steroid-a-propionic acid compounds, especially ?-4 BNC and/or ?-1,4 BNC, by microbial side chain degradation on 17-C-side chain steroid substrates under aerobic conditions, which is characterised by the fact that if desired even in the absence of inhibitors for the steroid ring degradation and/or the growth inhibitors use is made of defective block mutants as microorganisms which have been obtained according to the previously depicted production process.

It may be further established that wild strains of this kind are especially suitable as starting material for the subsequent mutation and selection in the sense of the teaching of the parent application, in order thereby to supply finally defective mutants suitable for gaining the 17-C-steroid-a-propionic acid compounds by microbial side chain degradation on 17-C-side chain steroid substrates in a technical treatment and in good yield.

Heretofore, it was possible only occasionally to obtain as metabolism products of microbial degradation steroid compounds which contain an alkyl side chain group and especially the residue of a-propionic acid in 17-C position.

They can be used, for example, for protecting industrial materials against microbial degradation or against a change in the industrial materials caused by microorganisms.

They can be used, for example, for protecting industrial materials against microbial degradation or against a change caused by microorganisms, and for protecting wood.

BACKGROUND OF THE INVENTION European Patent Application No. 004 913 as laid open describes inter alia a process for the production of 17C-steroid-a-propionic acid compounds, particularly 3-oxopregna-4-ene-20-carboxylic acid (?4-BNC) and/or 3-oxopregna-1,4-dien-20-carboxylic acid (?1,4-BNC), by microbial side chain degradation on 17C-side chain steroid substrates.

All degradation products must be safe, non-toxic and non-accumulable in nature, i.e. must be subject to complete microbial degradation.