نتایج جستجو برای: phenolic antioxidant

تعداد نتایج: 108587  

Journal: :Molecules 2008
Aline Lamien-Meda Charles Euloge Lamien Moussa M Y Compaoré Roland N T Meda Martin Kiendrebeogo Boukare Zeba Jeanne F Millogo Odile G Nacoulma

A total of fourteen (14) species of wild edible fruits from Burkina Faso were analyzed for their phenolic and flavonoid contents, and their antioxidant activities using the DPPH, FRAP and ABTS methods. The data obtained show that the total phenolic and total flavonoid levels were significantly higher in the acetone than in the methanol extracts.Detarium microcarpum fruit had the highest phenoli...

Journal: :Molecules 2010
Ren-You Gan Lei Kuang Xiang-Rong Xu Yuan Zhang En-Qin Xia Feng-Lin Song Hua-Bin Li

In order to find new sources of natural antioxidants, the antioxidant capacities of 50 medicinal plants associated with treatment of rheumatic diseases were systemically evaluated using the ferric-reducing antioxidant power (FRAP) and Trolox equivalent antioxidant capacity (TEAC) assays, and their total phenolic contents were measured by the Folin-Ciocalteu method. Their antioxidant activities ...

2014
Lingxiao Yang Hui Zhang Lilin Cheng Zhonghua Gu Dan Hua Xiguang Qi Haifeng Qian Li Wang

Cereal grains are generally subjected to thermal treatment before consumption. However, few data are available on total phenolic content (TPC), degree of starch gelatinization, phenolic acids, and antioxidant capacity of extruded whole grains based on trolox equivalent antioxidant capacity (TEAC), DPPH radical scavenging activity, and ferric reducing antioxidant potential (FRAP). Four whole gra...

Journal: :Advanced pharmaceutical bulletin 2014
Riaz Uddin Moni Rani Saha Nusrat Subhan Hemayet Hossain Ismet Ara Jahan Raushanara Akter Ashraful Alam

PURPOSE Gardenia jasminoides is a traditional medicinal plant rich in anti-inflammatory flavonoids and phenolic compounds and used for the treatment of inflammatory diseases and pain. In this present study, antioxidant potential of Gardenia jasminoides leaves extract was evaluated by using various antioxidant assays. METHODS Various antioxidant assays such as 1, 1-diphenyl-2-picrylhydrazyl (D...

2012
Faride Hesam Gholam Reza Balali Reza Taheri Tehrani

OBJECTIVES Potato (Solanum tuberosum L.), as a whole food, contains high levels of vitamins and important antioxidants including phenolic acids, carotenoids and flavonoids. The objective of this study was to determine the total phenolic content and antioxidant activities of three common potatoes (Solanum tuberosum) cultivars in Iran i.e., Savalan, Agria and Sante. MATERIALS AND METHODS Phenol...

Journal: :Molecules 2016
Honest N E Kessy Zhuoyan Hu Lei Zhao Molin Zhou

The effects of different treatment methods on the stability and antioxidant capacity of the bioactive phenolic compounds of litchi pericarps were investigated. Fresh litchi pericarps were open air-dried, steam-blanched for 3 min in combination with hot air oven drying at 60 and 80 °C, and unblanched pericarps were dried in a hot air oven at 40, 60, 70 and 80 °C until equilibrium weight was reac...

2017
Syama Hari Priya Nisha Prakasan Jayamurthy Purushothaman

BACKGROUND The medicinally important phytochemicals present in Syzygium cumini seeds probably accounts for its wide use in traditional systems of medicines in India, like Ayurveda, Unani, and Siddha. AIM The aim of the study was to determine the antioxidant potential of three different geographical variants of S. cumini seeds and to compare the phenolic profiling to know the effect of geograp...

2013
V. Upadhya S. R. Pai G. Ankad P. J. Hurkadale H. V. Hegde

Aim of the study was to evaluate antioxidant activity and total phenolic content of Achyranthes coynei; an endemic plant used in treatment of several diseases in the same lines that of Achyranthes aspera by traditional practitioners of Belgaum region. Efficiency of extraction methods was studied for aerial parts (leaves, stem, and inflorescence) extracted in methanol using continuous shaking, m...

2010
Feng-Lin Song Ren-You Gan Yuan Zhang Qin Xiao Lei Kuang Hua-Bin Li

Antioxidant capacities of 56 selected Chinese medicinal plants were evaluated using the Trolox equivalent antioxidant capacity (TEAC) and ferric reducing antioxidant power (FRAP) assays, and their total phenolic content was measured by the Folin-Ciocalteu method. The strong correlation between TEAC value and FRAP value suggested that the antioxidants in these plants possess free radical scaveng...

2010
Érica Weinstein Teixeira Dejair Message Giuseppina Negri Antonio Salatino Paulo César Stringheta

Total phenolic contents, antioxidant activity and chemical composition of propolis samples from three localities of Minas Gerais state (southeast Brazil) were determined. Total phenolic contents were determined by the Folin-Ciocalteau method, antioxidant activity was evaluated by DPPH, using BHT as reference, and chemical composition was analyzed by GC/MS. Propolis from Itapecerica and Paula Câ...

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