نتایج جستجو برای: folin ciocalteu method

تعداد نتایج: 1630675  

In this study, we have examined the antioxidant activity and total phenolic content of different extracts (including water, methanol, water : methanol and acetone) of Nerium oleander L. grown in the north of Iran by employing various in-vitro assay, i.e. DPPH free radical scavenging, reducing power and total antioxidant capacity through the Mo (VI) reduction. The extracts showed different level...

Journal: :Anatolian journal of botany 2022

In this study, it was aimed to determine the total antioxidant capacity and phenolic flavonoid amounts of Lavandula officinalis (lavender), which is an aromatic plant, callus extracts. Combinations Naphthalene Acetic Acid (NAA), Benzylaminopurine (BAP), Kinetin (KIN) 2,4-Dichlorophenoxy (2,4-D) plant growth regulators at different concentrations were used in medium. The specified analyzes carri...

Journal: :Revista de investigaciones altoandinas 2021

Cocoa and its main derivative, chocolate, are an important source of antioxidant compounds for human nutrition. Polyphenols the antioxidants present in chocolate affected by industrialisation processes cocoa beans. In this regard, effect incorporating raw during final stage refining process on capacity phenolic content dark was studied. For purpose, chocolates (70%) were made with incorporation...

Journal: :Coffee and Cocoa Research Journal 2022

Cocoa bean shell is a by-product of processing chocolate products that can be used as tea infusion because it contains bioactive compounds such polyphenols which act antioxidants. Roasting plays very important role in the development aromas and flavors. The temperature commonly roasting about 100 – 150 ºC. Phenolic content formation sensory properties product due to presence interaction with pr...

Journal: :Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi 2021

Radical scavenging activity of the extracts Lathyrus aphaca L. var. pseudoaphaca (Boiss.) Davis, aureus (Stev.) Brandza, cicera L., sphaericus Retz., digitatus (Bieb.) Fiori in & Paol. and setifolius taxa distributed Burdur-Isparta regio was determined. Methanol air dried aerial parts seeds plants were dissolved water chlorophylls lipophilic compounds removed from aqueous extracts. 2,2-...

Journal: :Medfarm: Jurnal Farmasi dan Kesehatan 2023

Daun durian mengandung senyawa fenolik yang berpotensi sebagai antioksidan. Penelitian ini bertujuan untuk membandingkan aktivitas antioksidan ekstrak daun muda dan tua kadar fenol total flavonoid durian. Ekstraksi dilakukan secara maserasi dengan pelarut etanol 70%. Ekstrak diuji antioksidannya terhadap radikal DPPH mengukur absorbansi spektrofotometer UV-Vis, kemudian dihitung persen peredama...

Journal: :Journal of experimental botany 2007
Sandrine Barthod Zoran Cerovic Daniel Epron

The present study assesses light-induced variations in phenolic compounds in leaves of saplings of two co-occurring temperate species (Acer platanoides L., and Fraxinus excelsior L.) along a light gradient using a new non-invasive optical method (Dualex). The Dualex-derived UV absorbance of leaf epidermis (the sum of the adaxial and abaxial faces, AUV) increased significantly with increasing li...

2012
C. V. Sruthi A. Sindhu

BACKGROUND The five kashayams (kwaths - decoctions) Manjishtadi kashayam (MK), Rasna erandadi kashayam (REK), Sahacharadhi kashayam (SK), Maharasnadi (or Rasna dwiguna bhagam) kashayam (MRK) and Dhanwantharam kashayam (DK) are widely used in the management of diseases manifested due to vitiation of vata and vatarakta (mostly diseases of connective tissues, bones, joints and nervous system). Fre...

Journal: :Analytica chimica acta 2012
Xavier Cetó Juan Manuel Gutiérrez Manuel Gutiérrez Francisco Céspedes Josefina Capdevila Santiago Mínguez Cecilia Jiménez-Jorquera Manel del Valle

This work reports the application of a voltammetric electronic tongue system (ET) made from an array of modified graphite-epoxy composites plus a gold microelectrode in the qualitative and quantitative analysis of polyphenols found in wine. Wine samples were analyzed using cyclic voltammetry without any sample pretreatment. The obtained responses were preprocessed employing discrete wavelet tra...

Journal: :Nutricion hospitalaria 2012
L Tejeda M Dębiec L Nilsson J M Peñarrieta J A Alvarado

The objective of this study was to evaluate the proximal composition, as well as Total Antioxidant Capacity (TAC) and Total Phenols (TPH) in meals that represent a complex food matrix, from different hospitals in Bolivia and Sweden. Protein, fat, ash, dietary fiber and carbohydrate contents were measured in 29 samples: 20 from two Bolivian hospitals and 9 from the university hospital in Lund, S...

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