Abstract: A method for the detection and/or measurement in vitro of a lipase or phospholipase activity, including the addition of a sample likely to contain said lipase or phospholipase into the wells of microtitration plates coated with a layer of a lipid substrate which is able to be hydrolyzed by the lipase or phospholipase by releasing ?-eleostearic acid, and the detection and/or the measurement of the lipase or phospholipase activity by UV spectrophotometry of the ?-eleostearic acid released during the previous stage. The application of this method to the in vitro diagnosis of pathologies linked to an increase in the plasma lipase level.

Abstract: The invention relates to a method for the detection and/or measurement in vitro of a lipase or phospholipase activity, characterized in that it comprises: the addition of a sample likely to contain said lipase or phospholipase into the wells of microtitration plates coated with a layer of a lipid substrate which is able to be hydrolyzed by said lipase or phospholipase by releasing ?-eleostearic acid, the detection and/or the measurement of the lipase or phospholipase activity by UV spectrophotometry of the ?-eleostearic acid released during the previous stage. The invention also relates to the application of the above-mentioned method to the in vitro diagnosis of pathologies linked to an increase in the plasma lipase level.

Abstract: Process and apparatus for analyzing the characteristics of a liquid/fluid interface, especially in the presence of surface-active agents. A tensiometer operates according to the principle of the suspended drop and the amount of liquid injected in the drop is adjusted according to the value of the calculated interface tension; the volume of the formed drop is progressively increased as the interface tension tends to diminish. A drop-forming device (30) can acquire an image of the drop and read the drop contour (40), can calculate the interface tension based on the shape and the size of the contour, and can adjust the same. A method of high speed measurement of interface tension uses all the points in the drop contour and provides a value in less than a second with the aid of a microcomputer.

Abstract: Process for the preparation of a gastric lipase. The stomachs of rabbits or horses undergo extraction by an acid aqueous medium, the lipase extract is salted out by the addition of hydrosoluble salts then, by filtration on a molecular sieve, followed by separation using ion exchange chromatography, an elution fraction containing the lipase is collected.Medicament for fighting against malabsorptions of fatty substances.