نتایج جستجو برای: flavonols
تعداد نتایج: 1622 فیلتر نتایج به سال:
This study investigated the effect of acidified water at different pH values and extraction time on phenolic profile (anthocyanins, hydroxycinnamic acids flavonols), antioxidant activity colour characteristics dried blackcurrant pomaces (DBP) extracts. Extractions were carried out using acetic acid in (pH 1.5, 2.0, 2.5 3.0) for 2 6 h 30 °C. Phenolics concentration DBP extracts influenced by (p ...
Spectrophotometric methods for the determination of total polyphenols and flavonoids are often used because they simple, sensitive, precise. Before using these methods, must be validated to ensure quality obtained data prove that method is suitable its purpose. The aim this study was validate spectrophotometric flavonoids. has been according polyphenol standards, which belong groups phenolic ac...
Chitosan is the main compounds of fungal species cell walls and as biotic elicitors could be used to improve secondary metabolites. In this study, we have verified the time-course of cell growth, phenylpropanoid compounds ( total phenol, flavonols, flavonoids and echinacoside) production in cells treated with chitosan. To study mechanism of chitosan action, expression of p-coumarate 3-hydroxyla...
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