نتایج جستجو برای: malvidin

تعداد نتایج: 198  

Journal: :Molecules 2010
Daise Lopes-Lutz Judith Dettmann Chamila Nimalaratne Andreas Schieber

The phenolic profile of Amazon grape fruit (Pourouma cecropiifolia Martius) was investigated by high-performance liquid chromatography-electrospray ionization mass spectrometry (HPLC-ESI-MS/MS). For this purpose, suitable extraction and liquid chromatographic methods were developed. Anthocyanins, flavonols and chlorogenic acids were found mainly in the peel. Besides the main anthocyanins, i.e. ...

Journal: :Chemical research in toxicology 2005
Michael Habermeyer Jessica Fritz Hans U Barthelmes Morten O Christensen Morten K Larsen Fritz Boege Doris Marko

In the present study, we investigated the effect of anthocyanidins on human topoisomerases I and II and its relevance for DNA integrity within human cells. Anthocyanidins bearing vicinal hydroxy groups at the B-ring (delphinidin, DEL; cyanidin, CY) were found to potently inhibit the catalytic activity of human topoisomerases I and II, without discriminating between the IIalpha and the IIbeta is...

2009
Vjera Butković Ruđer Bošković

The degradation of the six anthocyanidins (pelargonidin, cyanidin, delphinidin, peonidin, petunidin and malvidin) mediated by the nitroxides: 2,2,6,6-tetramethylpiperidine-1-oxyl (Tempo), 4-hydroxy2,2,6,6-tetramethylpiperidine-1-oxyl (Tempol) and 4-methoxy-2,2,6,6-tetramethylpiperidine1-oxyl (4CH3O-Tempo) at 25 oC in aqueous acid solution was investigated spectrophotometrically and by EPR and H...

Journal: :Genetics 1959
C W Hagen

N earlier studies concerned with the genetic regulation of pigmentation in the I garden balsam, Impatiens balsamina, the genes which determine the nature of anthocyanin pigmentation were found in individual cases to regulate also the structure of leucoanthocyanins (ALSTON and HAGEN 1958) and flavonols (CLEVENGER 1958). Thus the dominant gene H , while increasing the quantity of pelargonidin der...

Journal: :Journal of food science 2011
Balunkeswar Nayak Jose De J Berrios Joseph R Powers Juming Tang

Foods with antioxidant capacity provide protection against cardio-vascular, certain forms of cancers, and Alzheimer's diseases caused by oxidative damages and contribute health benefits. The effect of extrusion cooking on the antioxidant capacity and color attributes of extruded products prepared from 3 selected formulations of purple potato and yellow pea flours using a co-rotating twin screw ...

Journal: :Molecules 2014
Li-Li Sun Wan Gao Meng-Meng Zhang Cheng Li Ai-Guo Wang Ya-Lun Su Teng-Fei Ji

In present study, the anthocyanin composition and content of the fruit of B. heteropoda Schrenk were determined for the first time. The total anthocyanins were extracted from the fruit of B. heteropoda Schrenk using 0.5% HCl in 80% methanol and were then purified using an AB-8 macroporous resin column. The purified anthocyanin extract (PAE) was evaluated by high-performance liquid chromatograph...

Journal: :Molecules 2010
Blaga Radovanović Aleksandra Radovanović

The present study is focused on anthocyanin derivatives characterizing the antioxidant activity of Cabernet Sauvignon wines produced from different vineyard regions in the Balkans. These bioactive compounds were quantified with a high performance liquid chromatography (HPLC)-diode array detection (DAD) method. The antiradical activity was estimated by the ability of the wine to scavenge the sta...

2012
Charlotte Schrader Insa M A Ernst Heike Sinnecker Sebastian T Soukup Sabine E Kulling Gerald Rimbach

A number of cardioprotective effects, including the reduced oxidation of the low-density lipoprotein (LDL) particles, have been attributed to dietary soy isoflavones. Paraoxonase 1 (PON1), an enzyme mainly synthesized in the liver, may exhibit anti-atherogenic activity by protecting LDL from oxidation. Thus, dietary and pharmacological inducers of PON1 may decrease cardiovascular disease risk. ...

Journal: :Molecules 2012
Wu Li Hong Liang Ming-Wei Zhang Rui-Fen Zhang Yuan-Yuan Deng Zhen-Cheng Wei Yan Zhang Xiao-Jun Tang

Litchi fruit pericarp (LFP) contains significant amounts of phenolics which have been found to exhibit diverse biological activities. The purpose of this work was to determine the varietal differences in phenolic profiles and antioxidant activity of LFP from nine commercially available cultivars. The total phenolic and flavonoid contents ranged from 9.39 to 30.16 mg gallic acid equivalents/g fr...

Journal: :The Plant cell 2013
Rita Maria Francisco Ana Regalado Agnès Ageorges Bo J Burla Barbara Bassin Cornelia Eisenach Olfa Zarrouk Sandrine Vialet Thérèse Marlin Maria Manuela Chaves Enrico Martinoia Réka Nagy

Accumulation of anthocyanins in the exocarp of red grapevine (Vitis vinifera) cultivars is one of several events that characterize the onset of grape berry ripening (véraison). Despite our thorough understanding of anthocyanin biosynthesis and regulation, little is known about the molecular aspects of their transport. The participation of ATP binding cassette (ABC) proteins in vacuolar anthocya...

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