Abstract: A novel pressure control system provided for maintaining a constant predetermined excess pressure in a fluid dispensing container comprises a high-pressure plastic vessel having an inner chamber and an upper open end, and a pressure control device with a valve, which pressure control device is mounted on the upper open end of the high-pressure vessel, whereas a passageway is provided from the inner chamber to the outside, which is controlled by the valve, wherein the vessel is substantially cylindrical. The upper part of the vessel has a spherical dome with a cylindrical insert provided for receiving the pressure control device and the lower end of the vessel has an open end, which is closed by a ring-shaped closure.

Abstract: The present application relates to methods for producing materials having viable micro-organisms incorporated therein. More particularly, the materials are produced under high temperature and/or high pressure conditions, and the microganisms are incorporated in the material before or during these conditions. Also provided are micro-organisms that remain viable under these conditions and have different applications, depending on the nature of the material.