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:
Feb. 19, 1985
Filed:
Apr. 19, 1983
Metty S Langston, Ossining, NY (US);
General Foods Corporation, White Plains, NY (US);
Abstract
Grape pomace is contacted with an aqueous extraction solvent containing HSO.sub.3.sup.- ions to form anthocyanin-(HSO.sub.3) complex. The complex is recovered by treating the liquid extract phase with a non-ionic adsorbent to adsorb the complex. Anthocyanin colorant, free of the HSO.sub.3.sup.- ions is recovered by elution with an acidified organic solvent for anthocyanin. The anthocyanin colorant may be provided in dry form by drying the solvent solution. This process allows us to remove sugars, organic acids, polymerized anthocyanin pigment and other water soluble material, thus providing a highly 'colored' monomeric anthocyanin pigment. The anthocyanin colorant produced by this process is at least 10 times more concentrated than that produced by conventional methods and about two times stronger than most of the concentrated pigment.