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Title

Antioxidant profile of oepper (Capsicum annuum L.) fruits containing diverse levels of capsaicinoids

AuthorsPalma Martínez, José Manuel CSIC ORCID; Terán, Fátima; Contreras Ruiz, Alba CSIC; Rodríguez-Ruiz, Marta CSIC ORCID; Corpas, Francisco J. CSIC ORCID
KeywordsAscorbate
Ascorbate-glutathione cycle
Capsaicin
Catalase
Dihydrocapsaicin
Glutathione
NADP-dehydrogenases
Superoxide dismutase
Issue Date2020
PublisherMultidisciplinary Digital Publishing Institute
CitationAntioxidants 9(9): 878 (2020)
AbstractCapsicum is the genus where a number of species and varieties have pungent features due to the exclusive content of capsaicinoids such as capsaicin and dihydrocapsaicin. In this work, the main enzymatic and non-enzymatic systems in pepper fruits from four varieties with different pungent capacity have been investigated at two ripening stages. Thus, a sweet pepper variety (Melchor) from California-type fruits and three autochthonous Spanish varieties which have different pungency levels were used, including Piquillo, Padrón and Alegría riojana. The capsaicinoids contents were determined in the pericarp and placenta from fruits, showing that these phenyl-propanoids were mainly localized in placenta. The activity profiles of catalase, total and isoenzymatic superoxide dismutase (SOD), the enzymes of the ascorbate–glutathione cycle (AGC) and four NADP-dehydrogenases indicate that some interaction with capsaicinoid metabolism seems to occur. Among the results obtained on enzymatic antioxidants, the role of Fe-SOD and the glutathione reductase from the AGC is highlighted. Additionally, it was found that ascorbate and glutathione contents were higher in those pepper fruits which displayed the greater contents of capsaicinoids. Taken together, all these data indicate that antioxidants may contribute to preserve capsaicinoids metabolism to maintain their functionality in a framework where NADPH is perhaps playing an essential role.
Description© 2020 by the authors.
Publisher version (URL)https://doi.org/10.3390/antiox9090878
URIhttp://hdl.handle.net/10261/220283
DOI10.3390/antiox9090878
E-ISSN2076-3921
Appears in Collections:(EEZ) Artículos
(IATA) Artículos




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