Zeneca obtains United States patent.

Zeneca Ltd. (London, United Kingdom) has patented a method for improving the viability of bacterial cells after drying by aging the culture in the stationary phase The term stationary phase may refer to

Chromatography, in chemistry.
The stationary phase approximation in the evaluation of integrals in mathematics.
The method of steepest descent in the evaluation of integrals in mathematics.
A phase in bacterial growth.

for periods of around six hours prior to drying. Further improvement may be obtained by culturing in a nitrogen deficient de·fi·cient
adj.
1. Lacking an essential quality or element.

2. Inadequate in amount or degree; insufficient.

deficient

a state of being in deficit. medium. The bacterial cells accumulate trehalose tre·ha·lose
n.
A sweet-tasting, crystalline disaccharide, C₁₂H₂₂O₁₁, found in trehala and in many fungi. to protect the cells against drying out and other cell damage and the medium is further defined as having a higher than normal osmotic osmotic,
adj pertaining to osmosis.

osmotic pressure,
n See pressure, osmotic.

osmotic

emanating from or pertaining to the pressure of osmosis. potential. (US 5728574)

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Publication:	BIOTECH Patent News
Geographic Code:	4EUUK
Date:	Apr 1, 1999
Words:	79
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