Comparative Analysis of Antioxidant Activity in Almond and Pistachio Seeds
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In order to compare the antioxidant activity of almond and pistachio seeds, total flavonoid content, total polyphenol content, ABTS free radical scavenging activity, and DPPH electron donating activity were measured. In case of almond seed, the highest value of the total flavonoid content and the total polyphenol content was observed from hot water extracts, while the highest values were observed from 100% methanol extracts in pistachio seed. Total flavonoid content was higher in almond than in pistachio seed, and the total polyphenol content was higher in pistachio seed. ABTS free radical scavenging activity of both almond and pistachio seeds were observed to be highest from hot water extracts, and it is higher in pistachio than in almond seed for all solvent extracts. Higher DPPH free radical scavenging activity was observed from hot water extracts rather than other solvent extracts in both almond and pistachio seeds. DPPH free radical scavenging activity was higher than ABTS free radical scavenging activity. In consequence, almond and pistachio seeds showed antioxidant activity, and these two nuts are worth being utilized as natural antioxidants in many fields.
Abstract
In order to compare the antioxidant activity of almond and pistachio seeds, total flavonoid content, total polyphenol content, ABTS free radical scavenging activity, and DPPH electron donating activity were measured. In case of almond seed, the highest value of the total flavonoid content and the total polyphenol content was observed from hot water extracts, while the highest values were observed from 100% methanol extracts in pistachio seed. Total flavonoid content was higher in almond than in pistachio seed, and the total polyphenol content was higher in pistachio seed. ABTS free radical scavenging activity of both almond and pistachio seeds were observed to be highest from hot water extracts, and it is higher in pistachio than in almond seed for all solvent extracts. Higher DPPH free radical scavenging activity was observed from hot water extracts rather than other solvent extracts in both almond and pistachio seeds. DPPH free radical scavenging activity was higher than ABTS free radical scavenging activity. In consequence, almond and pistachio seeds showed antioxidant activity, and these two nuts are worth being utilized as natural antioxidants in many fields.
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