A - Human Necessities – 23 – J
Patent
A - Human Necessities
23
J
195/128.4
A23J 1/18 (2006.01)
Patent
CA 1173389
Abstract of the Disclosure The present invention relates to a process for the isolation of protein from microbial cells. The microbial cells are subjected to a treatment to disrupt the cell walls thereby producing a cellular debris fraction and a fraction containing protein and nucleic acid. The two fractions are separated and the fraction containing the protein and nucleic acid is treated with a chelating agent at a pH in the range of 5.5 to 7Ø The resulting solution is passed through an anion exchange column which selectively adsorbs the nucleic acid. The protein is recovered from the resultant eluate.
396423
Lawford George R.
Lewis Peter N.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Weston (george) Limited
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