NUTRITIONAL AND FUNCTIONAL PROPERTIES OF REGIONAL FRUITS

CARDOZO, MARÍA LUZ; ORDÓÑEZ, ROXANA MABEL; ISLA, MARÍA INÉS

Tucuman

Congreso; BIOCELL; 2008

Asociacion de Biologia de Tucuman

Consumption of fruits and vegetables helps prevent numerous chronic diseases. This property might be caused by antioxidant phytochemicals present in their composition. The specific aim of this study was to determine the nutritional and functional properties of fruit ethanolic and aqueous extracts of four plant species that grow in northwestern Argentina. This study shows that all fruits analyzed accumulate glucose and fructose. Zisyphus mistol aqueous extracts exhibit the highest amounts of soluble proteins (133 mg/g) and total phenolic compounds (27.42mg/g) followed by extracts exhibit the highest amounts of soluble proteins (133 mg/g) and total phenolic compounds (27.42mg/g) followed by Zisyphus mistol aqueous extracts exhibit the highest amounts of soluble proteins (133 mg/g) and total phenolic compounds (27.42mg/g) followed by Cereus forbesii, Morus nigra and Cyphomandra betacea. The DPPH scavenging ability of all fruit extracts was higher than that of synthetic antioxidants. Another antioxidant activity screening method applicable to both lipophilic and hydrophilic antioxidants, ABTS?+ scavenging ability of all fruit extracts was higher than that of synthetic antioxidants. Another antioxidant activity screening method applicable to both lipophilic and hydrophilic antioxidants, ABTS?+ and Cyphomandra betacea. The DPPH scavenging ability of all fruit extracts was higher than that of synthetic antioxidants. Another antioxidant activity screening method applicable to both lipophilic and hydrophilic antioxidants, ABTS?+?+ (ABTS radical cation) assay, showed results similar to those obtained with DPPH. The aqueous extract of Z. mistol scavenged both radicals at a weak rate (50%) at 53 ìg/mL while the SC50 values for the other extracts ranged between 5 and 8 ìg/mL. the other extracts ranged between 5 and 8 ìg/mL. radicals at a weak rate (50%) at 53 ìg/mL while the SC50 values for the other extracts ranged between 5 and 8 ìg/mL. the other extracts ranged between 5 and 8 ìg/mL. Z. mistol scavenged both radicals at a weak rate (50%) at 53 ìg/mL while the SC50 values for the other extracts ranged between 5 and 8 ìg/mL. the other extracts ranged between 5 and 8 ìg/mL. ìg/mL while the SC50 values for the other extracts ranged between 5 and 8 ìg/mL.ìg/mL.