Hoechst Aktiengesellschaft

Euroferm Gmbh I.g.

Rainer Buchholz

Hans-Matthias Deger

Joachim Wink

Hartmut Voelskow

Rolf Woernle

Johann Mixich

Thomas Bayer

Ulrich Fricke

Michael Dieckmann

An method and an apparatus for measuring the partial pressure of gases dissolved in liquids in plants for carrying out biotechnological and food technological processes includes a measuring space which is separated by a gas-permeable diaphragm which is permeable for the gas to be determined. A light emission source produces a light ray with a wavelength which is absorbed by the gas to be determined. The light ray is directed into the measuring space. A measuring device is provided for determining the light ray leaving the measuring space. The measuring space, the light emission and the measuring device are arranged in a rod-shaped probe. The probe is capable of being sterilized. The measuring space is filled with a fluid which does not chemically react with the gas to be determined.

Apparatus for measuring the partial pressure of gases dissolved in

Process for preparing purified glycolipids by membrane separation processes. Glycolipids may be purified and concentrated using a membrane separation process at acid pH and employing a membrane with a cut-off size of 30,000.

Process for preparing purified glycolipids by membrane separation

The invention relates to a process for the preparation of colorants and/or active compounds by culturing a microorganism of the genus Monascus in a sterilizable fluidized-bed fermenter of low water content, such as was proposed in German Patent Application P 3,625,698.6. The fluidizable particle used here is the microorganism itself--in pellet form or grown on carriers--which can be supplied with nutrients by spraying in substrate solutions. The colorants and/or active compounds are isolated by extraction with organic solvents.

Process for the preparation of colorants or monacolin K in a sterile

It is possible by use of a sterilizable fluidized bed fermenter to carry out low-moisture fermentations. Fluidizable granulated microorganisms are used for this fermentation under sterile conditions in the fluidized bed fermenter which is initially operated as a bubble column.

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Berlin, Germany

Rainer Buchholz