Identification and quantification of polyphenolic compounds from okra seeds and skins |
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Authors: | Panagiotis Arapitsas |
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Affiliation: | aDipartimento di Scienze Farmaceutiche, Polo Scientifico e Tecnologico, Università degli Studi di Firenze, Via U. Schiff, 6, 50019 Sesto Fiorentino (FI), Italy |
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Abstract: | The aims of the present work were to identify and quantify the polyphenolic profile of okra (Abelmoschus esculentus), a vegetable almost worldwide consumed. Since the knowledge about the okra polyphenolic compounds is limited, the seeds and the skins of okra were separately analyzed. The seeds, which represent the 17% of the vegetable and are richer in phenolic compounds, were mainly composed by oligomeric catechins (2.5 mg/g of seeds) and flavonol derivatives (3.4 mg/g of seeds). The skins polyphenolic profile was composed principally by hydroxycinnamic and quercetin derivatives (0.2 and 0.3 mg/g of skins). These findings in associations with the high content of okra in carbohydrates and proteins enhance the importance of this foodstuff in the human diet. |
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Keywords: | HPLC/DAD– MS/MS Flavonoids Hydroxycinnamic acid Abelmoschus esculentus Vegetables |
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