Investigating the efficacy of pomegranate extract as an antioxidant in multiple high-lipid model systems

Schevey, Christian

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https://hdl.handle.net/2142/42386 Copy

Description

Title

Investigating the efficacy of pomegranate extract as an antioxidant in multiple high-lipid model systems

Author(s)

Schevey, Christian

Issue Date

2013-02-03T19:37:02Z

Director of Research (if dissertation) or Advisor (if thesis)

Brewer, Mary S.

Department of Study

Food Science & Human Nutrition

Discipline

Food Science & Human Nutrition

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

M.S.

Degree Level

Thesis

Keyword(s)

• Pomegranate extract (POMx)
• Pomegranate
• Oxygen radical absorbance capacity (ORAC)
• Antioxidant

Abstract

Antioxidants are of paramount importance to the food industry. They confer benefits in the form of economic savings as well as drastic quality improvements to high-lipid products. Previous research has evaluated synthetic and natural compounds in a plethora of matrices to compare antioxidant efficacies. Because of the intricate nature of antioxidants, their solubility and differences in application, expansive research must be done to qualify antioxidants of similar chemical characteristics. Research was conducted in Urbana, IL to examine the efficacy of an industrially-derived, natural antioxidant (pomegranate extract) using four direct analysis technqiues and three high-lipid model systems in contrast to well-known and highly utilized antioxidants. Direct analysis techniques evaluated several antioxidants on two highly informative parameters of antioxidant activity: reducing capacity and hydrogen atom donating capacity. The high lipid models evaluated antioxidant activity in visceral systems by looking at each compounds ability to prolong the induction period of oxidation from different prooxidants (heat-, hemoglobin-, and irradiation-induced oxidation). These results improve the understanding of antioxidant capacity in applicable systems, as well as suggest potential mechanisms by which pomegranate extract might work.

Graduation Semester

2012-12

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http://hdl.handle.net/2142/42386

Copyright and License Information

Copyright 2012 Christian Schevey

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