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Food Lipids: Chemistry, Nutrition, and Biotechnology

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Figure 15 Mechanism for the formation of 2-pentenylfuran from linolenic acid in soybean<br />

oil [51].<br />

chlorophyll did not produce 2-pentylfuran <strong>and</strong> 2-pentenyl furan during dark storage.<br />

The soybean oil with no chlorophyll (removed by silicic acid chromatography) did<br />

not produce 2-pentylfuran or 2-pentenylfuran during light storage. These results<br />

clearly suggest the importance of light <strong>and</strong> chlorophyll in the stability of soybean<br />

oil <strong>and</strong> support the singlet oxygen oxidation theory of the formation of 2-pentylfuran<br />

<strong>and</strong> 2-pentenylfuran, which are contributors to reversion flavor.<br />

Copyright 2002 by Marcel Dekker, Inc. All Rights Reserved.

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