نتایج جستجو برای: ciocalteu

تعداد نتایج: 948  

2012
Semih Otles Buket Yalcin

Types of nettles (Urtica dioica) were collected from different regions to analyze phenolic compounds in this research. Nettles are specially grown in the coastal part. According to this kind of properties, nettle samples were collected from coastal part of (Mediterranean, Aegean, Black sea, and Marmara) Turkey. Phenolic profile, total phenol compounds, and antioxidant activities of nettle sampl...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2001
T Kujala J Loponen K Pihlaja

The extraction of red beetroot (Beta vulgaris) peel betalains and phenolics was compared with two extraction methods and solvents. The content of total phenolics in the extracts was determined according to a modification of the Folin-Ciocalteu method and expressed as gallic acid equivalents (GAE). The profiles of extracts were analysed by high-performance liquid chromatography (HPLC). The compo...

2015
Racquel Barcelo

This study identified the secondary metabolites present and determined the antioxidant activity of 31 edible wild fruits grown in Benguet province, Cordillera Administrative Region, Philippines. Total polyphenol and flavonoid content were estimated using Folin-Ciocalteu and aluminium chloride method respectively. Antioxidant activity was measured through diphenyl-1-picrylhydrazyl assay. Based o...

Journal: :Journal of pharmacopolium 2022

Kulit buah naga merah merupakan limbah yang jarang dimanfaatkan. Padahal, di dalamnya mengandung banyak kandungan senyawa metabolit sekunder dengan aktivitas farmakologi beragam, antara lain antioksidan. Dalam penelitian ini, dilakukan pengujian antioksidan menggunakan metode Ferric Reducing Antioxidant Power (FRAP) serta penentuan kadar fenol pada kulit diekstraksi maserasi dan Ultrasonic-assi...

Journal: :Croatian journal of food science and technology 2021

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...

Journal: :Journal of Food and Pharmaceutical Sciences 2021

Moringa oleifera L. have good nutritional content including phenolic compounds which can be used as antioxidants and grow in lowlands highlands. The purpose of this study was to determine the total ethanol extract M. leaves with variations area ​​collection. 50% obtained from simplicia by using maceration method. Analysis carried out a spectrophotometer instrument addition reagent Folin-Ciocalt...

Journal: :Acta Alimentaria 2021

Abstract Phenolic compounds provide important quality attributes to red wines interacting with the organoleptic impact of wines. Yeast mannoproteins can interact grape phenolic compounds, responsible for colour and antioxidant activity The aim this work was perform oenological characterisation specific selection Calabrian strains Saccharomyces sensu stricto . Among considered traits, aptitude y...

Objective: Boerhaavia elegans L. (Nyctaginaceae) is a medicinal plant used for the treatment of kidney disorders, urinary tract disorders and blood purification in Baluch tribe. The aim of present study is to evaluate the antioxidant propertyof B. elegans species for the first time. Materials and Methods: Different parts (leaf, stem and fruit) of the plant were extracted by using various solven...

In this present study, an environmentally friendly and rapid method for the synthesis of silver nanoparticles (SNPs) has been reported using Ziziphus Vulgaris (ZV) unripe fruit extract under mild conditions. The synthesized silver nanoparticles have been characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR) and ultravio...

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