Electrolysis: processes – compositions used therein – and methods – Electrolytic analysis or testing
Reexamination Certificate
2005-01-11
2005-01-11
Olsen, Kaj K. (Department: 1753)
Electrolysis: processes, compositions used therein, and methods
Electrolytic analysis or testing
C205S778500, C205S779000, C205S787000, C205S792000, C436S904000
Reexamination Certificate
active
06841060
ABSTRACT:
A simple analytical method for determining antioxidant level in food product and body fluids such as urine is based on reduction of elemental iodine. The method adds an aqueous solution of iodine and an iodophor to the sample to be tested. Polyvinylpyrrolidone is a preferred iodophor. Antioxidant materials in the sample reduce the elemental iodine and the reaction is monitored by measuring either a decrease in iodine or an increase in iodide ion. A preferred method of practicing the invention is to measure the change in iodide ion with an ion selective electrode and an appropriate electronic meter. The method rapidly and inexpensively produces antioxidant measurements that are comparable to those produced by my more complex and cumbersome methods.
REFERENCES:
patent: 4141688 (1979-02-01), Morris et al.
patent: 4300905 (1981-11-01), Bleisteiner et al.
patent: 6108570 (2000-08-01), Kohen et al.
Alexander, “Reaction of povidone-iodine with amino acids and other important biological compounds”, Proc. Int. Symp. Povidone, pp. 274-288, Apr. 1983.*
Coetzee, “Polyvinylpyrrolidone-iodine solutions as oxidizing agents in titrimetric determinations”S. Afr. J. Chem. 44, pp. 22-24, Mar. 1991.*
Cheregi et al, “Flow Injection Determination of L-Ascorbic Acid in Natural Juice with Biamperometric Detection”, Anal. Lett. 30 (14), pp. 2625-2640, Apr. 1983.*
Chen “Determination of ascorbic acid in drinks using cyanide-selective electrode with the addition of iodine”, Huaxue Chuanganqi, 15, pp. 295-297 (inlcuding CAS abstract), month N/A 1995.*
Motonaka et al, “Differential determination of a mixture of vitamin A and beta-carotene by potentiometric titration utilizing N-bromosuccinimide and iodine”, Bunseki Kagaku, 44, pp. 1013-1019 (including CAS abstract), Month N/A 1983.*
Karlsson, “Iodometric Determination of Ascorbic Acid by Controlled Potential Coulometry”, Talanta 22, pp. 989-993, Dec. 1995.*
Nicholas et al, “Antioxidants and Antiozonants”, Kirk-Othmer Encyclopedia of Chemical Technology, 3rd Ed., pp. 128-148, Month N/A 1978.*
Hampel et al, “Antioxidant”, Glossary of Chemical Terms, 2nd Ed., month N/A 1992.*
Translation of Chen, Chemical Sensors, vol. 15, pp. 295-297, Dec. 1995.*
Solinas et al, Ind. Agr. (Florence) (1968), 6, pp. 21-24 (CAS Abstract only).*
Christova et al., Anal. Chim. Acta, 1976, 85, pp. 301-307.*
Amiel M. Farrington et al., “Simple Solid Wire Microdisc Electrodes for the Determination of Vitamin C in Fruit Juices”, Feb. 1994, pp. 233-238.
Andrei Danet, et al., “Dispozitiv de analiza in flux cu injectare hidrodinamica”, 1994, pp. 1000 (English abstract included).
Search Report, Issued May 20, 1999 for International Application No. PCT/US 00/11899.
Olsen Kaj K.
Reed Smith LLC
Shanbrom Technologies LLC
LandOfFree
Method for quantifying antioxidant levels in food and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for quantifying antioxidant levels in food and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for quantifying antioxidant levels in food and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3368261