Abstract: A method and device for high-pressure treatment of liquid substances, for example foodstuffs. The substance undergoes a cyclic process whereby a limited amount of the substance during each cycle is pressurized in a pressure intensifier (1) to a predetermined pressure and is then maintained at this pressure for a predetermined period of time. After the substance has been pressurized in the pressure intensifier (1), it is conducted to a pressure chamber (10) while maintaining the predetermined pressure. The substance is further caused to reside in the pressure chamber (10) for the predetermined period of time by being caused to pass over a predetermined distance between an inlet (9a) and an outlet (9b), which are arranged in the pressure chamber (10).

Abstract: A pear processing method and apparatus is provided which includes several mechanisms for properly orienting the pear prior to coring, peeling and seed celling of the pear. Each pear is tumbled between a pair of orienting rolls to a position wherein the stem of the pear is oriented downwardly. Whiskers on one of the rolls speed up this orienting of the pear. A friction clutch on the other roll helps maintain the pear in its proper position, once the proper alignment has been attained. The pear is dropped downwardly into a transfer cup having four resilient fingers which tend to orient the pear. The pear is then pushed out of the transfer cup downwardly into a feed cup having a concave receptacle for centering the stem of the pear and three upwardly extending arms which grasp and center the blossom end of the pear. The pear is then transferred to a station wherein the pear is cored and thereafter peeled and seed celled simultaneously. The stem and blossom are also trimmed.

Abstract: The present invention discloses a pressure processing method and processing apparatus for sterilization, denaturation, etc. of food materials. A free piston is fitted in a pressure container so that the free piston is slidable in an axial direction of the container, the pressure container being partitioned by the free piston into two chambers to prevent mixing and contact between a material to be processed and pressure medium. The material to be processed filled in and supplied to one chamber is pressure-processed by the sliding movement of the piston caused by supplying the pressure medium to the other chamber. Three or more pressure containers, in each of which is fitted a free piston, are provided, and a series of processing operations including pressurizing and holding, discharge and supply of the material to be processed are carried out in a batch continuous manner in the same time zone.

Abstract: The invention relates to a procedure and a device for the treatment of a product containing pulp destined for the extraction of juices and purees. The procedure subjects the product to be treated to a series of compression stresses in rapid succession, to reduce the product consistency and to increase its tendency to peel from its skin. The device which performs the above procedure comprises two shaped moving walls defining internally a cavity inside of which the product to be treated flows. The procedure and the device offer excellent pulp treatment results while avoiding the necessity of heating the said pulp before separation between puree and scrap.

Abstract: A method for enhancing supercritical fluid extraction of sample matrices which contain water. The method involves mixing the samples with an extraction enhancing aid comprising flux-calcined diatomaceous earth which increases the permeability of the sample in a supercritical fluid and controls water during the extraction procedure.

Abstract: A method is described for drying extracts of natural substances obtained by high-pressure extraction with liquefied gases or gases in the supercritical state; it consists in treating the gas stream that is charged with the extract with a solid drying agent, preferably calcium sulfate, in powder or granular form.

Abstract: A process for manufacturing coffee extract is disclosed wherein an eductor is used to keep standing bodies of extract under sufficient agitation to prevent the coalescing and settling-out of insoluble materials contained in the extract.