Results 41 to 50 of about 809 (172)

Key to Xenobiotic Carotenoids [PDF]

Molecules, 2012
A listing of carotenoids with heteroatoms (X = F, Cl, Br, I, Si, N, S, Se, Fe) directly attached to the carotenoid carbon skeleton has been compiled. The 178 listed carotenoids with C,H,X atoms demonstrate that the classical division of carotenoids into hydrocarbon carotenoids (C,H) and xanthophylls (C,H,O) has become obsolete.
Sliwka, Hans-Richard, Partali, Vassilia
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Enhancement of carotenoid-to-chlorophyll singlet energy transfer by carotenoid-carotenoid interaction

Biophysical Journal, 1992
The apparent quantum yield of singlet-singlet spirilloxanthin-to-bacteriochlorophyll a energy transfer increases linearly with the residual spirilloxanthin content in Rhodospirillum rubrum membrane vesicles from which this carotenoid has been partially removed.
Zurdo, J., Fernández-Cabrera, C., Ramírez, J.M.   +2 more
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Carotenoides em grãos de milho verde após a aplicação de herbicidas pós-emergentes Carotenoids in green corn grains after post-emergence herbicide application

Pesquisa Agropecuária Brasileira, 2010
O objetivo deste trabalho foi avaliar o efeito da aplicação de herbicidas pós-emergentes no teor de carotenoides em grãos de milho verde. Utilizou-se o delineamento inteiramente casualizado com cinco tratamentos - sem aplicação; foramsulfuron ...
Sara de Almeida Rios, Maria Cristina Dias Paes, Décio Karam, Aluízio Borém, Wilton Soares Cardoso   +4 more
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Contenido de carotenoides y color extractable de nuevos cultivares en chile pimiento

Revista Chapingo Serie Horticultura, 2005
Se evaluaron, seis cultivares de chile pimiento: ‘CHR 9802’; ‘CHR MURZUCH’; ‘CHR 9002’; ‘CHR 9801’; ‘CHR 9803’ y ‘CHR INV’, las cuales fueron sometidas a 75 ºC por 8 horas.
V. Méndez-Trujillo, D. González-Mendoza, F. A. Gutiérrez-Miceli   +2 more
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Vitamina C, carotenoides, fenólicos totais e atividade antioxidante de goiaba, manga e mamão procedentes da Ceasa do Estado de Minas Gerais - doi: 10.4025/actascihealthsci.v33i1.8052

Acta Scientiarum. Health Sciences, 2011
Este estudo teve como objetivo analisar o conteúdo de compostos antioxidantes (ácido ascórbico - AA, ácido desidroascórbico - ADA, vitamina C total, licopeno, β-caroteno, β-criptoxantina e estimativa de compostos fenólicos) e avaliar a atividade ...
Daniela da Silva Oliveira, Priscila Peixoto Aquino, Sônia Machado Rocha Ribeiro, Rossana Pacheco da Costa Proença, Helena Maria Pinheiro-Sant'Ana   +4 more
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Carotenoid composition and antioxidant activity of the raw and boiled fruit mesocarp of six varieties of Bactris gasipaes

Archivos Latinoamericanos de Nutrición
Se determinó la concentración y composición de carotenoides a seis variedades de Bactris gasipaes, mediante espectrofotometría y HPLC con un detector de arreglo de diodos.
Sorel Jatunov, Silvia Quesada, Cecilia Díaz, Enrique Murillo   +3 more
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La pigmentación amarilla del tejido adiposo de bovinos finalizados en pastoreo y su relación con su concentración de carotenoides y el perfil de ácidos grasos

Revista Mexicana de Ciencias Pecuarias, 2012
Dos grupos de bovinos alimentados en pastoreo fueron muestreados al sacrificio: 52 animales en la primavera de 1999, y 60 animales el siguiente verano.
Saúl Barrón Gutierrez, Ofelia Mora Izaguirre, Víctor Castaño Meneses, Armando Shimada Miyasaka   +3 more
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OBTENCIÓN DE BETACAROTENO A PARTIR DEL CAMOTE TOQUECITA (IPOMOEA BATATA)

Revista Centro Azúcar, 2023
Introduction: Beta-carotene is a carotenoid present in fruits, and vegetables; it is a precursor of vitamin A. The sweet potato variety "Toquecita" with orange flesh from the Instituto Nacional de Investigaciones Agropecuarias de Portoviejo, Ecuador ...
Cinthia Moreira Buenaventura, Andrea Muñoz García, Francisco Sánchez Plaza, Wilmer Hernán Ponce Saltos, Gabriel Alfonso Burgos Briones   +4 more
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Low temperature impact on photosynthetic parameters of coffee genotypes Impacto de baixas temperaturas em parâmetros fotossintéticos de genótipos de cafeeiro

Pesquisa Agropecuária Brasileira, 2009
The objective of this work was to evaluate photoprotective mechanisms related to low positive temperatures in Coffea canephora (Conilon clones 02 and 153) and C. arabica ('Catucaí' IPR 102) genotypes, involved in cold temperature tolerance. To accomplish
Fábio Luiz Partelli, Henrique Duarte Vieira, Alexandre Pio Viana, Paula Batista-Santos, Ana Paula Rodrigues, António Eduardo Leitão, José Cochicho Ramalho   +6 more
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Carotenoids.

Chimia, 2011
This short review intends to present some key facts on carotenoids in a popular scientific language on the occasion of the International Year of Chemistry. Carotenoids have a characteristic C40H56 structure and represent a market value of several hundred million Euros. Their chemical synthesis is still a demanding challenge for chemists.
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