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:
Aug. 06, 2002
Filed:
Mar. 19, 1998
Applicant:
Inventors:
Yong Qian, San Diego, CA (US);
Richard E. A. Leitz, Hemet, CA (US);
David W. Krempin, Tumacula, CA (US);
Assignee:
Amway Corporation, Ada, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 3/090 ; G01N 3/094 ;
U.S. Cl.
CPC ...
G01N 3/090 ; G01N 3/094 ;
Abstract
The present invention provides an assay for detecting the presence of an array or a profile of antioxidant activity in any sources or products. In particular, the invention provides a method in which a sample is extracted with a polar, a non-polar and a semi-polar solvent to obtain three extracts; the extracts are chromatographed to get a chemical profile; and the profile is analyzed to determine the presence of antioxidants by directly reacting to a free-radical.