|
|
|
|
|
| Cardoso,Pollyanna Costa; Della Lucia,Ceres Mattos; Stringheta,Paulo César; Chaves,José Benício Paes; Pinheiro-Sant'Ana,Helena Maria. |
| This study investigated the α- and β-carotene content and provitamin A value of four leafy vegetables sold at local and street markets in Viçosa, MG, Brazil, in the spring and winter of 2002. Carotenoids were analyzed by high-performance liquid chromatography. α-Carotene was detected in all samples sold during spring, but was only present in a few samples of smooth and curly lettuce and kale in winter. β-Carotene was found in marked quantities in all leafy vegetables analyzed. Duncan's test (α = 5%) showed significantly higher α-carotene content in curly lettuce and vitamin A value in large-leaved watercress in the spring. Mean β-carotene content and vitamin A value were 7544, 8751, 2584, 2792, 8193, and 5338 μg/100 g and 666, 760, 227, 238, 698, and 460... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Α-Carotene; Β-Carotene; Leafy vegetables/analysis; Provitamin A. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502009000300019 |
| |
|
| |
|
|
| Almeida-Muradian,Ligia Bicudo; Popp,Veronica; Farias,Marcela Paiva. |
| The purpose of this study was to determine through carotenoid analysis, the provitamin A value of two carrots (Daucus carota L.) cultivars (Brasilia and Beta3), leaves and roots, raw and submitted to two ways of cooking: boiling and microwave. Proximate analysis results are also presented for a better characterization of these vegetables (moisture, ash, lipids, proteins, fiber and total carbohydrates). The main carotenoids sources of provitamin A in this vegetable, both in leaves or roots was β-carotene and α-carotene. α-carotene shows half of the provitamin A value of β-carotene. Samples of the Brasilia cultivar presented the better provitamin A value both for leaves and roots. The results for raw samples of the Brasilia cultivar were 464.48 RE/100g for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carotenoids; Provitamin A; Carrot leaves; Carrots. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20611997000200011 |
| |
|
| |
|
|
|
