نتایج جستجو برای: phenolic and flavonoid compounds

تعداد نتایج: 16856394  

Journal: :Journal of the science of food and agriculture 2012
Thomas J Herald Priyadarshini Gadgil Michael Tilley

BACKGROUND Sorghum possesses phenolic compounds that are health-promoting constituents of the grain. There are approximately 40 000 sorghum accessions, many of which have not been evaluated for the grain's health-promoting potential. Conventional methods for measuring total phenolic content, flavonoid content and 2,2-diphenyl-1-picrylhydrazyl (DPPH)-scavenging capacity are time-consuming and la...

2013
Mohaddese Mahboubi Nastaran Kazempour Ali Reza Boland Nazar

BACKGROUND Scrophularia striata (Scrophulariaceae family) is an herbaceous plant that is traditionally used for treatment of microbial infections. OBJECTIVES Antimicrobial and antioxidant activity of different extracts (methanolic, ethanolic, aqueous and ethyl acetate) from S. striata aerial parts was evaluated. MATERIALS AND METHODS The antimicrobial activity of different extracts from S. ...

2016
Manal Y. Sameeh Amal A. Mohamed Ahmed M Elazzazy

Article history: Received on: 03/04/2016 Revised on: 05/05/2016 Accepted on: 30/06/2016 Available online: 26/09/2016 Marine algae are potential sources of biologically active compounds with antiviral, antimicrobial and anticancer activities. Two species of marine algae, Padina boryana Thivy and Enteromorpha sp were collected from the Red Sea. Both species were extracted with ethanol, acetone, a...

2013
Xiaolan Jiang Yajun Liu Weiwei Li Lei Zhao Fei Meng Yunsheng Wang Huarong Tan Hua Yang Chaoling Wei Xiaochun Wan Liping Gao Tao Xia

Phenolic compounds in tea plant [Camellia sinensis (L.)] play a crucial role in dominating tea flavor and possess a number of key pharmacological benefits on human health. The present research aimed to study the profile of tissue-specific, development-dependent accumulation pattern of phenolic compounds in tea plant. A total of 50 phenolic compounds were identified qualitatively using liquid ch...

2018
Seyedeh Faezeh Taghizadeh Gholamhossein Davarynejad Javad Asili Seyed Hossein Nemati Gholamreza Karimi

Objective In this study, the levels and antioxidant activities of some secondary metabolites isolated from five pistachio (Pistacia vera) cultivars collected from four different geographical regions of Iran, were studied. Materials and Methods Total phenolic compounds levels were determined by Folin-Ciocalteu method. Total flavonoid content was determined as AlCl3 complex and expressed as mg ...

ابوالقاسمی, سیده نرجس, افشارمحمدیان, منصور, شریفی, محسن, محمدی, نرجس,

Dittrichia graveolens (Asteraceae) is an aromatic and annual plant. The aim of this study is the evaluation of total phenolic, flavonoid and flavonol content, the antioxidant activities and other important medicinal secondary metabolites of this plant. According to the results, the total amount of phenols and flavonoid in different plant organs of D. graveolens were different in a way that the ...

2014
Hiba N. Rajha Nada El Darra Zeina Hobaika Nadia Boussetta Eugene Vorobiev Richard G. Maroun Nicolas Louka

The current work concerns the optimization process of phenolic compounds solid liquid extraction from grape byproducts at high temperatures and short incubation times. The effect of five experimental parameters (solidliquid ratio, particle size, time, temperature and solvent mixture) mostly believed to affect the extraction process was undertaken. A first response surface methodology experiment...

Journal: : 2021

Evaluation of functional groups bioactive compounds, antioxidant potential, total phenolic and flavonoid content red bell pepper extracts

F. Rasouli Ghahroudi K. Rezaei M. Bameni Moghadam M. Mizani

The aim of this study is to develop an extraction method for the producing of a safe and efficient source of antioxidant compounds from fresh and pre-treated sweet orange (Citrus sinensis cv shahsavari) peel. Three types of solvents (100% ethanol, 100% water and ethanol-water mixtures at the ratios of 35:65 and 65:35, v/v), three duration times (60, 120 and 240 min) were chosen as the parameter...

2013
Massoumeh Farasat Ramazan-Ali Khavari-Nejad Seyed Mohammad Bagher Nabavi Foroogh Namjooyan

BACKGROUND Ulva genus, an edible seaweed, and an important food source in many south-east Asian countries is also recognized by its synonymous name as Enteromorpha. OBJECTIVES This study was carried out to evaluate antioxidant activity, contents of total phenolics, and flavonoids of methanolic extracts of edible green seaweeds including Ulva clathrata (Roth) C. Agardh and three samples of Ulv...

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