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| Carvalho,Lucia Maria Jaeger de; Smiderle,Lara de Azevedo Sarmet Moreira; Carvalho,José Luiz Viana de; Cardoso,Flavio de Souza Neves; Koblitz,Maria Gabriela Bello. |
| Carotenoids have antioxidant activity, but few are converted by the body into retinol, the active form of vitamin A. Among the 600 carotenoids with pro-vitamin A activity, the most common are α- and β-carotene. These carotenoids are susceptible to degradation (e.g., isomerization and oxidation) during cooking. The aim of this study was to assess the total carotenoid, α- and β-carotene, and 9 and 13-Z- β-carotene isomer contents in C. moschata after different cooking processes. The raw pumpkin samples contained 236.10, 172.20, 39.95, 3.64 and 0.8610 µg.g- 1 of total carotenoids, β-carotene, α-carotene, 13-cis-β-carotene, and 9-Z-β-carotene, respectively. The samples cooked in boiling water contained 258.50, 184.80, 43.97, 6.80, and 0.77 µg.g- 1 of total... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pro-vitamin A; Carotenoids; Pumpkin landraces; C. moschata; Pumpkin meals; Α-carotene; Β-carotene; Β-carotene isomers. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612014000200022 |
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| Pacheco,Sidney; Peixoto,Fernanda Marques; Borguini,Renata Galhardo; Nascimento,Luzimar da Silva de Mattos do; Bobeda,Claudio Roberto Ribeiro; Santiago,Manuela Cristina Pessanha de Araújo; Godoy,Ronoel Luiz de Oliveira. |
| In order to generate simple, efficient analytical methods that are also fast, clean, and economical, and are capable of producing reliable results for a large number of samples, a micro scale extraction method for analysis of carotenoids in vegetable matrices was developed. The efficiency of this adapted method was checked by comparing the results obtained from vegetable matrices, based on extraction equivalence, time required and reagents. Six matrices were used: tomato (Solanum lycopersicum L.), carrot (Daucus carota L.), sweet potato with orange pulp (Ipomoea batatas (L.) Lam.), pumpkin (Cucurbita moschata Duch.), watermelon (Citrullus lanatus (Thunb.) Matsum. & Nakai) and sweet potato (Ipomoea batatas (L.) Lam.) flour. Quantification of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Β-carotene; Α-carotene; Lycopene. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000500011 |
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