Journal
ANTIOXIDANTS
Volume 9, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/antiox9060556
Keywords
biodiversity; Capsicum annuumL; antioxidant activity; beta-carotene; ascorbic acid; polyphenols; statistical analysis
Funding
- Campania regional Project SALVE PSR 2007-2013
- Campania regional Project AGRIGENET PSR 2007-2013
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Bioactive compounds of different Campania native sweet pepper varieties were evaluated. Polyphenols ranged between 1.37 mmol g(-1)and 3.42 mmol g(-1), beta-carotene was abundant in the red variety Cazzone (7.05 mu g g(-1)). Yellow and red varieties showed a content of ascorbic acid not inferior to 0.82 mg g(-1), while in some green varieties the presence of ascorbic acid was almost inconsistent. Interrelationships between the parameters analyzed and the varieties showed that ascorbic acid could represent the factor mostly influencing the antioxidant activity. Polyphenol profile was different among the varieties, with a general prevalence of acidic phenols in yellow varieties and of flavonoids in red varieties. Principal Component Analysis, applied to ascorbic acid, total polyphenols and beta-carotene, revealed that two of the green varieties (Friariello napoletano and Friariello Sigaretta) were well clustered and that the yellow variety Corno di capra showed similarity with the green varieties, in particular with Friariello Nocerese. This was confirmed by the interrelationships applied to polyphenol composition, which let us to light on a clustering of several red and yellow varieties, and that mainly the yellow Corno di capra was closer to the green varieties of Friariello.
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