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. 20, 1988
Filed:
Jun. 12, 1987
Miklos Szucs, Budapest, HU;
Istvanne Palotas, Vac, HU;
Jozsef Szejtli, Budapest, HU;
Eva Fenyves, Budapest, HU;
Forte Fotokemial Idpar, Vac, HU;
Chinoin Gyogyszervegyeszeti Gyar, Budapest, HU;
Abstract
The invention relates to a process for removing nucleic acids and purine bases from gelatine by (a) adding cyclodextrin bead polymer having a particle size of 20 to 600 .mu., a cyclodextrin content of 30 to 70% and a polyvinyl alcohol content of 0.3 to 0.5% to the gelatin solution in a weight ratio of 1:1 to 10:1 calculated on the amount of the gelatin then filtering off the cyclodextrin polymer or (b) passing the gelatin solution through a cyclodextrin bead polymer column, whereby the amount of the gelatin is 5 to 50% of the weight of the column charge, then eluting the nucleic acids and the purine bases from the cyclodextrin bead polymer.