The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 10, 2013
Filed:
Jun. 19, 2008
Johannes Caspar Mathias Elizabeth Bender, Utrecht, NL;
Pieter Sebastiaan Vermeulen, Utrecht, NL;
Johannes Caspar Mathias Elizabeth Bender, Utrecht, NL;
Pieter Sebastiaan Vermeulen, Utrecht, NL;
Bender Analytical Holding B.V., Utrecht, NL;
Abstract
The present invention relates to a method for removing impurities from biopolymer material, e.g. polysaccharides, polypeptides or polynucleotides. More particularly, the present invention provides a method of reducing lipopolysaccharide levels in a lipopolysaccharide containing biopolymer material, comprising the successive steps of: a) providing an aqueous solution containing 0.05-50 wt. % of dissolved lipopolysaccharide-containing biopolymer material; 0.001-10 wt.% of a surfactant; 0.05-15 wt. % of solid adsorbent; and at least 50 wt. % of water; b) allowing the adsorbent to adsorb lipopolysaccharides; c) separating the solid adsorbent containing adsorbed lipopolysaccharides from the remaining aqueous solution; and d) recovering the biopolymer material containing a reduced level of lipopolysaccharide from the separated aqueous solution.