Articles
ANTIOXIDANT CONTENT AND ACTIVITY IN DIFFERENT STRUCTURES OF FIVE APPLE CULTIVARS GROWN IN CHILE
Article number
841_33
Pages
275 – 280
Language
English
Abstract
Apples (Malus × domestica) have been identified as one of the main dietary sources of antioxidants, mainly phenolics.
These compounds vary in their composition among cultivars and differ in their distribution among the fruit tissues.
It is known that the peel can largely differ from the pulp in terms of antioxidants content and activity.
Peels are a secondary product in the dried apple production.
In this research, we determined the relative polyphenols content and antioxidant activity of five apple cultivars commonly used for the production of dried apples.
Comparison of antioxidant content and activity among apple cultivars and apple peel in relation to the whole fruit and other structures, were made.
The antioxidant content was determined with the Folin-Ciocalteau assay and the antioxidant activity was evaluated with the Ferric Reducing Antioxidant Power (FRAP) assay.
Additionally, dry matter, pH, titratable acidity and soluble solids were evaluated.
Results obtained for the peel were compared to those of: a) Peel+Pulp; b) Pulp; and c) Whole fruit.
The results indicated that total phenolic content and the antioxidant activity of the peel are substantially higher than those of Peel+Pulp, Whole fruit and Pulp values for all the cultivars studied.
Among cultivars, peels of Red Delicious have significantly higher content of total phenolics and FRAP value than those of other cultivars studied.
Additionally, we found a high correlation between the total phenolics content and the antioxidant activity, in all the cultivars and structures of the fruits analyzed, except in the pulp where the correlation was weak.
On the other hand, the physical and chemical composition differed among cultivars and structures of the apple fruits.
In summary, our results demonstrated the antioxidant content, activity, the physical, and chemical composition vary considerably depending on the apple cultivars and structures analyzed.
These compounds vary in their composition among cultivars and differ in their distribution among the fruit tissues.
It is known that the peel can largely differ from the pulp in terms of antioxidants content and activity.
Peels are a secondary product in the dried apple production.
In this research, we determined the relative polyphenols content and antioxidant activity of five apple cultivars commonly used for the production of dried apples.
Comparison of antioxidant content and activity among apple cultivars and apple peel in relation to the whole fruit and other structures, were made.
The antioxidant content was determined with the Folin-Ciocalteau assay and the antioxidant activity was evaluated with the Ferric Reducing Antioxidant Power (FRAP) assay.
Additionally, dry matter, pH, titratable acidity and soluble solids were evaluated.
Results obtained for the peel were compared to those of: a) Peel+Pulp; b) Pulp; and c) Whole fruit.
The results indicated that total phenolic content and the antioxidant activity of the peel are substantially higher than those of Peel+Pulp, Whole fruit and Pulp values for all the cultivars studied.
Among cultivars, peels of Red Delicious have significantly higher content of total phenolics and FRAP value than those of other cultivars studied.
Additionally, we found a high correlation between the total phenolics content and the antioxidant activity, in all the cultivars and structures of the fruits analyzed, except in the pulp where the correlation was weak.
On the other hand, the physical and chemical composition differed among cultivars and structures of the apple fruits.
In summary, our results demonstrated the antioxidant content, activity, the physical, and chemical composition vary considerably depending on the apple cultivars and structures analyzed.
Publication
Authors
C. Henríquez, S. Almonacid, B. Escobar, I. Chiffelle, M. Gómez, H. Speisky
Keywords
FRAP assay, Folin-Ciocalteau, Fuji, Granny Smith, Pink Lady, Red Delicious, Royal Gala
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