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Titre du document / Document title

Antioxidant isoflavones in Osage orange, Maclura pomifera (Raf.) Schneid

Auteur(s) / Author(s)

RONG TSAO (1) ; YANG Raymond (1) ; YOUNG J. Christopher (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Food Research Program, Agriculture and Agri-Food Canada, 93 Stone Road West, Guelph, Ontario, N1G 5C9, CANADA

Résumé / Abstract

Recent findings that many human chronic diseases are associated with oxidative stresses have instigated the search for dietary antioxidants. Many phytochemicals, particularly phenolic compounds, have been found to possess strong antioxidant activity and reduce the risks of those diseases. Isoflavones, a special phenolic group found in soybean, have been found to act as antioxidants in some model systems. This study investigated the isoflavone content in a unique nonedible tree fruit, Osage orange [Maclura pomifera (Raf.) Schneid], and methods for the extraction, identification, and quantification of the two major isoflavones, osajin and pomiferin, were developed. The ethyl acetate extract contained 25.7% osajin and 36.2% pomiferin, and the two isoflavones were at 9.5 g kg-1 of fresh Osage orange. Two model systems, FRAP and β-CLAMS, were used to measure the antioxidant activity of these two isoflavones. Pomiferin was found to be a strong antioxidant in both systems, comparable to the antioxidant vitamins C and E and the synthetic antioxidant BHT. Osajin and the two soybean isoflavones (genistein and daidzein) showed no antioxidant activity. Although the Osage orange fruit is not a food source, it is considered to be safe and, therefore, a potentially good source of an antioxidant nutraceutical and functional food ingredient.

Revue / Journal Title

Journal of agricultural and food chemistry    ISSN  0021-8561   CODEN JAFCAU 

Source / Source

2003, vol. 51, no22, pp. 6445-6451 [7 page(s) (article)] (38 ref.)

Langue / Language

Anglais

Editeur / Publisher

American Chemical Society, Washington, DC, ETATS-UNIS  (1953) (Revue)

Mots-clés anglais / English Keywords

Phenol

;

Health food

;

Isoflavone derivatives

;

Pharmacognosy

;

Biological activity

;

Quantization

;

Extraction process

;

Antioxidant

;

Identification

;

Characterization

;

Isolation

;

Chemical composition

;

Mots-clés français / French Keywords

Phénol

;

Pomiferine

;

Maclura pomifera

;

Aliment santé

;

Isoflavone dérivé

;

Pharmacognosie

;

Activité biologique

;

Quantification

;

Procédé extraction

;

Antioxydant

;

Identification

;

Caractérisation

;

Isolement

;

Composition chimique

;

Mots-clés espagnols / Spanish Keywords

Fenol

;

Alimentos sanos

;

Farmacognosia

;

Actividad biológica

;

Cuantificación

;

Procedimiento extracción

;

Antioxidante

;

Identificación

;

Caracterización

;

Aislamiento

;

Composición química

;

Mots-clés d'auteur / Author Keywords

Osage orange

;

Maclura pomifera

;

hedge apple

;

osajin

;

pomiferin

;

isoflavones

;

antioxidant activity

;

Localisation / Location

INIST-CNRS, Cote INIST : 7332, 35400011335222.0120

Nº notice refdoc (ud4) : 15209583



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