Results 151 to 160 of about 1,996 (182)

Efecto del estrés por nitrógeno y salinidad en el contenido de b-caroteno de la microalga Dunaliella tertiolecta//Effect of nitrogen and salinity stress on the β-carotene content of the microalgae Dunaliella tertiolecta

Biotecnia, 2020
Las microalgas del genero Dunaliella son cultivadas con la finalidad de obtener compuestos antioxidantes, principalmente carotenoides. En este estudio se analizo el crecimiento, biomasa y contenido de β-caroteno de Dunaliella tertiolecta cultivada en ...
J. García Morales, J. López-Elías, Diana Medina-Félix, Norma García Lagunas, Diana Fimbres Olivarría   +4 more
exaly   +2 more sources

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Caroteno-Protein Complexes in Four Species of Echinodermata From the Adriatic

Biochemical Systematics and Ecology, 1983
Abstract Caroteno-proteins containing astaxanthin, canthaxanthin, zeaxanthin and isozeaxanthin were purified from three species of starfish ( Astropecten aurantiacus, A. spinulosus and Echinaster sepositus ) and one species of sea-urchin ( Paracentrotus lividus ) from the Adriatic.
B Czeczuga
exaly   +2 more sources

Extração de β -caroteno por cromatografia em coluna em cenouras (daucus carota l.).

Cadernos UniFOA, 2017
O presente estudo teve como objetivo determinar os valores de carotenoides totais e β -caroteno em cenouras (Daucus carota L.). As amostras de cenoura foram submetidas a extracao eter de petroleo 40-60o a fim de extrairmos os carotenoides.
P. Esteves, A. C. Esteves, Valéria Calmeto Noronha Barleta   +2 more
exaly   +4 more sources

Aplicação do Método de Monte Carlo na Estimativa da Taxa de Degradação Térmica do β-Caroteno

E-xacta, 2018
A compreensão dos parâmetros de reações químicas é essencial para o desenvolvimento de processos industriais mais eficazes. O presente trabalho apresenta a aplicação do método estocástico de Monte Carlo com Cadeias de Markov, utilizando a abordagem de ...
P. Valério, Mariane de Carvalho Sabarense   +1 more
exaly   +2 more sources

[Caroteno-protein complexes in Axinella verrucosa (Porifera: Demospongae)].

Bollettino della Societa italiana di biologia sperimentale, 1989
Carotenoproteins are common to a wide variety of animals, most notably invertebrates although other animal groups have been shown to have these complexes as well. In a previous paper alpha-carotene, renieratene, isorenieratene and an unknown isomer of renieratene were isolated, but at present nothing is known about nature of the carotenoid-protein ...
P, Santoro, G, Parisi, V, Guerriero
openaire   +2 more sources

Avaliação da Atividade Antioxidante do β-Caroteno Extraído do Pimentão Vermelho (Capsicum Anuum L.) em Cremes Pelo Método DPPH

Educação Ciência E Saúde, 2015
Os pigmentos carotenoides presentes no pimentao vermelho apresentam um grande potencial antioxidante e representam uma perspectiva promissora na prevencao do fotoenvelhecimento.
A. Duarte, Maria da Glória Batista de Azevedo, Juliana de Souza Alencar Falcão   +2 more
exaly   +2 more sources

Relatedness of Caroteno-Chlorophyll Antenna Complexes in Algae and Plants

1998
A great variety of pigment-protein complexes has evolved over time in oxygenic organisms whose primary function is the absorption of light and the transfer of energy to reaction centers within the thylakoid membranes. Phycobilisomes (PBS) are the predominant antennae in rhodophytes and cyanophytes (10, 27). PBS are located within the stromal space, and
E. Gantt, F. X. Cunningham, B. Grabowski, S. Tan   +3 more
openaire   +1 more source

Quercetin and daidzeinβ-apo-14’-carotenoic acid esters as membrane antioxidants

Free Radical Research, 2013
Esterification by β-apo-14'-carotenoic acid was found to have opposite effects on antioxidant activity of quercetin (at B4', B3' hydroxyl) as of daidzein (at A7 hydroxyl) in phosphatidylcholine liposomes. The daidzein ester had increased activity, while quercetin had a significant decreased activity.
Hu, F., Bu, Y.Z., Liang, R., Duan, R.M., Wang, S., Han, R.M., Wang, P., Ai, X.C., Zhang, J.P., Skibsted, Leif Horsfelt   +9 more
openaire   +3 more sources

Forgotten fatty acids—Surface properties supply conclusive evidence for including carotenoic acids

Chemistry and Physics of Lipids, 2018
The term "fatty acids" is conceptually well defined with regard to fats, whose extent of saturation or unsaturation is precisely indicated in the content description of foodstuff. In contrast, the term "fatty acid" gives no hint of being associated with "soap" (Na and K salts of fatty acids).
Asma Zaidi, Inger Lise Alsvik, Christer L. Øpstad, Daniel Martin, Eduard Rebman, Georg Voss, Hans-Richard Sliwka, Vassilia Partali   +7 more
openaire   +2 more sources

β‐Apo‐8′‐Carotenoic acid and its esters in sunflower oil oxidation

Journal of the American Oil Chemists' Society, 2001
AbstractThe oxidation kinetics of sunflower oil (SO) and pure triacylglycerols of sunflower oil (TGSO) in the presence of different concentrations (0.0008–0.02%, 1.9–32.7×10−5 M) of β‐apo‐8′‐carotenoic acid (CA), ethyl β‐apo‐8′‐carotenoate (EC), and β‐apo‐8′‐carotenoylglycerol (CG) were studied.
N. V. Yanishlieva, E. M. Marinova, V. G. Raneva, V. Partali, H. ‐R. Sliwka   +4 more
openaire   +1 more source