Assay of antioxidant concentration by titration with peroxy radi

Details Assay of antioxidant concentration by titration with peroxy radi Assay of antioxidant concentration by titration with peroxy radi

1977-10-27

1979-05-22

Turk, Arnold

Chemistry: physical processes

Physical processes

Crystallization

23230M, G01N 3328

Patent

active

041557131

ABSTRACT:
Effective antioxidant levels in hydrocarbonaceous materials are determined by (a) establishing the rate of uninhibited oxygen absorption for a standard liquid comprising (i) an oxidizable material susceptible to free radical oxidation and (ii) an agent that causes free radical oxidation; (b) establishing the rate of oxygen absorption for a test liquid comprising (a) (i) and (a) (ii) and a dispersible amount of the hydrocarbonaceous material or extract therefrom comprising antioxidant; (c) ascertaining the delay before uninhibited oxygen absorption of the test liquid and (d) determining the effective concentration of the antioxidant in the hydrocarbonaceous material. If the antioxidant in the hydrocarbonaceous material is known, the concentration can be accurately determined.

REFERENCES:
salmonowicz et al.; "The Determination of Antioxidant Activity of Cocoa Hull Extract"; Zesz. Probl. Postepow Nauk Roln. 1973, No. 136, 215-219, (Eng.).
Hendrickson et al.; "Organic Chemistry--Third Edition"; McGraw-Hill Book Co.; 1970; pp. 826-827.

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