Chemical and morphological characterization of Costa Rican papaya (Carica papaya L.) hybrids and lines with particular focus on their genuine carotenoid profiles.
J Agric Food Chem
; 60(10): 2577-85, 2012 Mar 14.
Article
em En
| MEDLINE
| ID: mdl-22243655
ABSTRACT
Papaya (Carica papaya L.) F1 hybrids and inbred lines grown in Costa Rica were screened for morphological and nutritionally relevant fruit traits. The qualitative composition of carotenoids showed great similarity, being mostly composed of free and esterified ß-cryptoxanthins accompanied by ß-carotene, lycopene, and biosynthetic precursors. High levels of (all-E)-lycopene and its isomers were distinctive for red-fleshed hybrids, whereas yellow-fleshed fruits were virtually devoid of lycopenes. Because carotenoid levels among the investigated hybrids and lines differed significantly, this study supports the hypothesis of an exploitable genetic variability, and a potential heterotic effect regarding carotenoid expression may be instrumental in papaya-breeding programs. Due to significantly higher levels of provitamin A carotenoids and coinciding high levels of total lycopene, particularly red-fleshed hybrids might represent prospective sources of these compounds. Furthermore, the nutritional value of some genotypes was boosted by substantial amounts of ascorbic acid (up to 73 mg/100 g of fresh weight), which correlated to total soluble solids (R(2) = 0.86).
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Carotenoides
/
Carica
Tipo de estudo:
Qualitative_research
País/Região como assunto:
America central
/
Costa rica
Idioma:
En
Revista:
J Agric Food Chem
Ano de publicação:
2012
Tipo de documento:
Article