Polyphenols, Anthocyanins, Ascorbic Acid, and Radical Scavenging Activity of Rubus, Ribes, and Aronia |
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| Authors: | S BENVENUTI F PELLATI M MELEGARI D BERTELLI |
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| Affiliation: | Authors Benvenuti, Pellati, Melegari, and Bertelli are with the Dept. of Pharmaceutical Sciences, Univ. of Modena and Reggio Emilia, Via Campi 183, 41100 Modena, Italy. Direct inquiries to author Benvenuti (E-mail: benvenuti.stefania@unimo.it). |
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| Abstract: | ABSTRACT: Total polyphenols, total anthocyanins, and reduced ascorbic acid were evaluated in berries belonging to the genera Rubus, Ribes, and Aronia by means of spectrophotometric and high-performance liquid chromatography (HPLC) techniques. The 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity of the fruit extracts was tested. Total polyphenols ranged from 140.6 to 888.5 mg/100 g fresh weight (FW), total anthocyanins ranged from 22.0 to 460.5 mg/100 g FW, and reduced ascorbic acid ranged from 12.4 to 153.8 mg/ 100 g FW. The average EC50 values for Aronia melanocarpa, Ribes nigrum, Ribes rubrum, Rubus fruticosus, and Rubus idaeus were 1.8, 2.8, 5.3, 6.4, and 8.2 mg FW, respectively. The results indicate that the fruits tested are good sources of natural antioxidants. |
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| Keywords: | polyphenols anthocyanins ascorbic acid radical scavenging antioxidant |
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