نتایج جستجو برای: total phenolic compounds and antioxidant activity

تعداد نتایج: 17036370  

2012
Patricia Diaz Sang Chul Jeong Samiuela Lee Cheang Khoo Sundar Rao Koyyalamudi

UNLABELLED BACKGROUND This study aims to determine the relationship between the antioxidant and anti-inflammatory activities of the thirteen herbs and two fungi extracts, and their total phenolic and flavonoid contents. METHODS Antioxidant activities were evaluated by four assays: an antioxidant activity assay using Saccharomyces cerevisiae, a DPPH ((2, 2-diphenyl-1-picrylhydrazyl) assay t...

Journal: :the iranian journal of pharmaceutical research 0
aytaç güder department of chemistry, faculty of arts and sciences, ondokuz mayis university, samsun, turkey. halil korkmaz department of chemistry, faculty of arts and sciences, ondokuz mayis university, samsun, turkey.

the study was aimed at evaluating the antioxidant activity of hydroalcoholic solution extracts of urtica dioica l. (ud), malva neglecta wallr. (mn) plants and their mixture. in this study, flower (udf), root (udr), seed (uds) and leaf (udl) parts of ud and flower (mnf) and leaf (mnl) parts of mn were used. the antioxidant properties of hydroalcoholic extracts and their mixture were evaluated us...

Hadjiakhoondi , A, Khanavi , M, Mahrokh, A, Nabavi , SMB, Sadati , N, Sohrabipour, J ,

Background: Marine algae, especially brown species, produce a wide range of metabolites with various biological activities. Objective: Since marine algae are rich source of dietary fibers, minerals, proteins, vitamins and phenolic components with antioxidant effect, in addition to the rule of oxidative stress in pathogenesis of chronic diseases, the aim of this study was to investigate possib...

Journal: :Asian Pacific journal of cancer prevention : APJCP 2013
Supakit Khacha-ananda Khajornsak Tragoolpua Panuwan Chantawannakul Yingmanee Tragoolpua

Antioxidant activity, total phenolic, total flavonoid compounds and cytotoxicity to cancer cell lines of propolis extracts from two extraction methods were investigated in this study. Propolis was collected from Phayao province and extracted with 70% ethanol using maceration and sonication techniques. The antioxidant activity was evaluated by DPPH assay. Total phenolic and flavonoid compounds w...

Ficus carica is a worldwide important crop. Its different parts such as leaves, stem barks, fruit and roots are used in traditional medicine from ancient age to treat the various diseases. In this research, total phenolic content, antioxidant activity, yield of extract and profiling of phenolic compounds of maturated leaves of different cultivars of F. carica were investigated by using two diff...

Journal: :Natural product research 2007
Feras Q Alali Khaled Tawaha Tamam El-Elimat Maha Syouf Mosa El-Fayad Khaled Abulaila Samara Joy Nielsen William D Wheaton Joseph O Falkinham Nicholas H Oberlies

As part of an International Cooperative Biodiversity Groups (ICBG) program to study Jordan's biodiversity, the relative levels of antioxidant activity and the total phenolic content of aqueous and methanolic extracts of a total of 95 plant species, all of Jordanian origin and those collected at random, have been measured. The total phenolic content of aqueous and methanolic extracts of the inve...

2012
Ricardo Gómez-García Guillermo C. G. Martínez-Ávila Cristóbal N. Aguilar

Agro-industrial byproducts represent a serious environmental problem and the industries producing these residual materials have incurred expenses for their proper disposal and generally increase the pollution due to the high content of organic substances and might represent legal problems. However, the residues such as grape wastes are potential source of phenolic compounds which are widely kno...

Journal: :Journal of food science 2011
George E Inglett Diejun Chen

Miracle Fruit (Synsepalum dulificum) has been studied because of its unique taste modifying properties. This study investigated contents of phenolics, flavonoids, and antioxidant activities in skin, pulp, and seeds of Miracle Fruit. The free phenolic content in skin was almost 3 times of that in pulp and 4 times of that in seeds. Skin contributed 43.96% of free phenolic compounds with 15.91% of...

2016
Mustafa Bener Yixiao Shen Zhimin Xu Reşat Apak

Grape pomace contains high levels of valuable antioxidants such as anthocyanins and phenolic compounds that help prevent chronic diseases such as cardiovascular problems and cancers. In this study, Concord grape pomace was soaked in acidic solutions at different time intervals and pHs in a water bath at 80 o C. Five kinds of anthocyanins were released and identified in the pomace after acid hyd...

Journal: :Journal of the Chinese Medical Association : JCMA 2014
Tarik Mohammed Chaouche Farah Haddouchi Riadh Ksouri Fouzia Atik-Bekkara

BACKGROUND Phytochemicals are found in abundance at different levels in many medicinal plants. It is important to measure the total phenolic compounds correctly in such medicinal plants, the better to assess their antioxidant capacity. METHODS Our study sought to evaluate the total phenolic, flavonoid, and tannin contents of three Algerian medicinal plants: Echium pycnanthum Pomel, Haloxylon ...

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