New oxygen producing mechanism proposed

(PhysOrg.com) -- Photosynthesis is the mechanism by which plants generate oxygen, but new research on a novel type of anaerobic bacteria supports the theory that bacteria produced their own oxygen long before the evolution ...

Bioreactor device helps frogs regenerate their legs

A team of scientists designed a device that can induce partial hindlimb regeneration in adult aquatic African clawed frogs (Xenopus laevis) by "kick-starting" tissue repair at the amputation site. Their findings, appearing ...

Shaken, and stirred: Scaling up bioreactors' fluid dynamics

Bioreactors are widely used to produce different therapeutics in the biopharmaceutical and regenerative medicine industries. Drug development relies on small multi-well plates shaken around an orbital diameter, while production-scale ...

ORNL cell-free protein synthesis is potential lifesaver

Lives of soldiers and others injured in remote locations could be saved with a cell-free protein synthesis system developed at the Department of Energy's Oak Ridge National Laboratory.

Photobioreactor enables systems biology studies of cyanobacteria

A novel photobioreactor designed and developed at Pacific Northwest National Laboratory for cultivating photosynthetic bacteria and microalgae will be featured in the journal Bioresource Technology. PNNL researchers are using ...

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Bioreactor

A bioreactor may refer to any manufactured or engineered device or system that supports a biologically active environment. In one case, a bioreactor is a vessel in which a chemical process is carried out which involves organisms or biochemically active substances derived from such organisms. This process can either be aerobic or anaerobic. These bioreactors are commonly cylindrical, ranging in size from litres to cubic metres, and are often made of stainless steel.

A bioreactor may also refer to a device or system meant to grow cells or tissues in the context of cell culture. These devices are being developed for use in tissue engineering or biochemical engineering.

On the basis of mode of operation, a bioreactor may be classified as batch, fed batch or continuous (e.g. a continuous stirred-tank reactor model). An example of a continuous bioreactor is the chemostat.

Organisms growing in bioreactors may be suspended or immobilized. A simple method, where cells are immobilized, is a Petri dish with agar gel. Large scale immobilized cell bioreactors are:

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