Hibiscus sabdariffa is an edible flower, known as jamaica flower or roselle, with known health-promoting properties and used as a refreshing beverage. The objective was to compare total polyphenols and nutraceutical properties of powder and liquid Hibiscus extracts (HE) and Hibiscus-containing commercial teas. Hibiscus powder contained 23 mg equivalents of gallic acid (GA)/g, 40 mg (+) catechin (CA)/g, and 43 mg protocatechuic acid (PCA)/g, and the concentrated liquid extract 0.38 mg GA/mL, 0.70 mg CA/mL, and 0.78 mg PCA/mL. Fresh tea had 0.047 mg GA/mL, 0.27 mg CA/mL and 0.29 mg PCA/mL. PCA in commercial tea products ranged from 24 to 59 mg equivalent/g DL depending on its origin. Commercial teas contained 102-180 mg PCA/cup and when other herbs were added, formulation had higher concentration of PCA (58.55 mg/g DL) than fresh tea. Results suggest that Hibiscus tea is a rich source of flavonoids with potential nutraceutical properties.

Phytochemical composition and nutraceutical properties of <i>Hibiscus sabdariffa</i> products

243rd National Meeting (2012)

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Phytochemical composition and nutraceutical properties of Hibiscus sabdariffa products