摘要:
The invention relates to a sparger for introducing a gas or gas mixture into a liquid and to a method for sparging liquids. The sparger according to the invention comprises a cavity, a gas inlet for routing a gas into the cavity and two or more faces, which are or can be pressed onto one another in a positive fashion such that a gas pressed into the cavity through the gas inlet escapes through the gaps occurring between the pressed together faces.
摘要:
The invention relates to a process for reducing the amount of deposits during the culture of organisms, and in particular of cell cultures, where these have a tendency towards agglomeration or adhesion to the bioreactor and to its elements, or where these are readily susceptible to agglomeration or adhesion of cell debris or of substances.
摘要:
The invention relates to a bioreactor, to the use of the bioreactor for culturing microorganisms or cell cultures, and also to a method for culturing microorganisms or cell cultures.
摘要:
The invention relates to a device and a method for retaining and recirculating cells in a vessel through which flow passes continuously or batchwise.In addition, the invention relates to a method of producing a device by which cells can be retained and recirculated in a vessel through which flow passes continuously or batchwise.
摘要:
A gas-introduction system useful, for example, in biotechnology for supplying cells or microorganisms with oxygen. The gas-introduction system has a bubble column and a distributor. In the vessel there is situated a liquid medium which is to be supplied with gas. A vector is used as transport medium for the gas. The gas is introduced into the bubble column and here taken up by the vector. The vector is applied to the liquid surface via the distributor in droplet form, falls downward in the medium and releases to the medium some of the gas that has been taken up. At the bottom of the vessel is situated a collecting device in which the vector droplets coalesce and pass back into the bubble column. Disclosed are a bioreactor comprising the gas-introduction system and a method for introducing gas into a liquid medium, preferably an aqueous suspension containing cells or microorganisms.
摘要:
A method of inactivating microorganisms such as viruses within a fluid such as a biological fluid is disclosed. The method includes the steps of providing a UV reactor, which may take the form of an elongated generally annular reaction chamber surrounding at least one elongated UV lamp, moving the fluid within the reaction chamber in a primary flow directed along the length of the UV lamp, and inducing a circulating secondary flow within the fluid with the secondary flow being superimposed on the primary flow. As the fluid moves through the reaction chamber in the primary flow, it is circulated repeatedly toward and away from the UV lamp in the circulating secondary flow to provide uniform and controllable exposure of the entire volume of fluid to ultraviolet radiation. Microorganisms such as viruses are thus inactivated while desirable components in the fluid, such as proteins, are preserved without the use of a free radical scavenger.
摘要:
A reactor is designed as a disposable element, a container receives the reactor, and a device comprises a reactor. A drive unit of the device generates a rotating-oscillating motion of the reactor, and the device is utilized for cultivating cells and/or microorganisms.