Abstract

ROJANO, Benjamín Alberto et al. Polyphenols and Antioxidant Activity of the Freeze-Dried Palm Naidi (Colombian Açai) (Euterpe oleracea Mart). Rev. Fac. Nac. Agron. Medellín [online]. 2011, vol.64, n.2, pp.6213-6220. ISSN 0304-2847.

Euterpe oleracea Mart is a native palm tree native of South America. The fruit known as açaí in Brazil and naidi palm in Colombia and is of great economic value to the native peoples. For the analysis was used freeze-dried pulp, from the Colombian Pacific. This fruit has a high percentage of minerals (6.94%), specifically sodium, potassium and iron. Naidi palm is rich in polyphenolic compounds, especially anthocyanins (268.5 mg cyanidin-3-glucoside per 100 g of freeze dried) and phenolic acid as ferulic (10.27 mg/100 g of freeze dried) , caffeic (7.06 mg/100 g of freeze dried), p-Coumaric (2.81 mg/100 g of freeze dried) and fewer chlorogenic (0.30 mg/100 g of freeze dried); which provides high antioxidant activity by the techniques ABTS, DPPH and FRAP and specifically H-ORAC value (Hydrophilic Oxygen Radical Absorbance Capacity) of 98142.0 Micromol Tx /100 g of freeze dried and L-ORAC value (Lipophilic Oxygen Radical Absorbance Capacity) was 3194.1 Micromol Tx /100 g of freeze dried. Total ORAC 101336.1 Micromol Tx /100 g of freeze dried.

Keywords : Free radicals; phytogenetic resources; functional foods; nutraceutical foods; ORAC's value.

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