Review article
Antioxidant potential of ferulic acid

https://doi.org/10.1016/0891-5849(92)90184-IGet rights and content

Abstract

Ferulic acid is a ubiquitous plant constituent that arises from the metabolism of phenylalanine and tyrosine. It occurs primarily in seeds and leaves both in its free form and covalently linked to lignin and other biopolymers. Due to its phenolic nucleus and an extended side chain conjugation, it readily forms a resonance stabilized phenoxy radical which accounts for its potent antioxidant potential. UV absorption by ferulic acid catalyzes stable phenoxy radical formation and thereby potentiates its ability to terminate free radical chain reactions. By virtue of effectively scavenging deleterious radicals and suppressing radiation-induced oxidative reactions, ferulic acid may serve an important antioxidant function in preserving physiological integrity of cells exposed to both air and impinging UV radiation. Similar photoprotection is afforded to skin by ferulic acid dissolved in cosmetic lotions. Its addition to foods inhibits lipid peroxidation and subsequent oxidaive spoilage. By the same mechanism ferulic acid may protect against various inflammatory diseases. A number of other industrial applications are based on the antioxidant potential of ferulic acid.

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    Ernst Graf is Manager of Food Science in the Technology Center at Tastemaker in Cincinnati, Ohio. He received his undergraduate education in Switzerland and earned his PhD degree in Biochemistry from the University of Minnesota in 1981. His primary academic research interests include the chemistry and biochemistry of activated oxygen species and their effects on biological and food systems. He is particularly interested in the effects of radical scavengers and iron chelating agents on oxidative reactions. He has authored a book and over a dozen publications on various aspects of phytic acid, another naturally occuring antioxidant. At Tastemaker he is directing new product research in the area of industrial food science and technology. In his spare time he likes to travel, exercise, write, cook, and camp with his family.

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