Production of xanthan having a low pyruvate content

Details Production of xanthan having a low pyruvate content Production of xanthan having a low pyruvate content

C - Chemistry, Metallurgy

12

P

195/140, 31/26,

C12P 19/06 (2006.01) C08B 37/00 (2006.01)

Patent

CA 1185912

ABSTRACT Low pyruvate xanthan gum comprising 0.1-1% by weight pyruvate (FCC Method) has useful properties for secondary oil recovery. It is produced by aerobically fermenting an organism of the genus Xanthomonas in a broth comprising: 1) a chemically defined simple salts medium comprising sources of nitrogen, sulphur, potassium, phosphorus, magnesium, calcium, and (optionally) iron, said simple salts medium being substantially free of cobalt, copper, manganese, zinc and boron; 2) an assimilable carbon source, and 3) a complex organic material which is a nitrogen source.

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