نتایج جستجو برای: flavonols

تعداد نتایج: 1622  

2006
Sam Sik KANG Jae - Gyu KIM Tae - Hoon LEE Ki - Bong OH

molecules with important functions, such as adherence, invasion, signaling, and interaction with the host immune system or the environment. In Gram-positive bacteria, many surface proteins are anchored to the cell wall envelope by an enzyme called sortase, which recognizes a conserved carboxylic sorting motif. Two sortase isoforms, sortase A (SrtA) and sortase B (SrtB), have been identified in ...

Journal: :Journal of food research 2022

The study aimed to evaluate the technological suitability of incorporating jamun extracts into Yoghurt. light focused on effect extraction method and rate addition flavonols profiles, antioxidant activity sensorial characteristics final Yoghurt product. Jamun fruit was subjected either mechanical cold or steam introduced milk at rates 5 10%. results indicated that technique had no values protei...

Journal: :Applied sciences 2022

Dalmatian vineyards host many autochthonous varieties. The phenolic profile, defined by the relative proportions of different compounds, is specific for each grape variety. aim this study was to determine and analyze flavonoid compounds twenty rare red Nineteen represented anthocyanins, flavanols, flavonols, were detected quantified using HPLC in three consecutive vintages. content skin anthocy...

2003
R. J. GRIESBACH K. K. KAMO

-In the flavonol biosynthetic pathway of Petunia 'Mitchell', polyploidy has a differential effect increasing the relative concentration of the major metabolite quercetin-3-sophoroside and decreasing the relative concentration of the minor metabolite quercetin-3,7-diglucoside. It has no effect on the total concentration or on the concentration of the other four minor flavonols.

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2000
A Rumbero F J Arriaga-Giner E Wollenweber

A new oxyprenyl coumarin was isolated from the lipophilic exudate of Ozothamnus lycopodioides. Its structure was established as 7-(3,3'-dimethylallyloxy)-5-hydroxy-6-methoxycoumarin from its UV, MS and NMR spectral data, especially two dimensional experiments. In addition to six earlier reported flavonols, we found four highly substituted flavones, including two rare methylenedioxyflavones.

Journal: :Bioscience, biotechnology, and biochemistry 2003
Nobuyoshi Nakajima Manabu Sugimoto Hiroshi Yokoi Hideaki Tsuji Kohji Ishihara

The acylated plant pigments synthesized by lipase-catalyzed transesterification with aromatic acids were compared in respect of their light-resistance and radical-scavenging ability. With both the flavonols and anthocyanins, their acylated derivatives were more stable against illumination with fluorescent light than their non-acylated glucosides. Their radical-scavenging ability partially decre...

اشرفی, کورش, رفیعیان کوپایی, محمود, شرافتی چالشتری, رضا, شرافتی چالشتری, فرهاد,

Introduction: Food-borne pathogens are causes of poisoning and gastrointestinal infections. In recent years, it is recommended to use natural materials like plant extracts and essences instead of chemical preservatives in food industry. Therefore, the aim of this study was to identify the phenolic compounds of ethanolic walnut kernel and its antimicrobial effect on some food-borne pathogens. M...

2014
Romain Meeusen

Accumulating evidence suggests that diet and lifestyle can play an important role in delaying the onset or halting the progression of age-related health disorders and can improve cognitive function. Exercise has been promoted as a possible prevention for neurodegenerative diseases. Exercise will have a positive influence on cognition and it increases the brain-derived neurotrophic factor, an es...

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