scholarly journals Measurement of Antioxidant Activity and Structural Elucidation of Chemical Constituents from Aglaia oligophylla Miq.

2016 ◽  
Vol 95 ◽  
pp. 1-7 ◽  
Author(s):  
Yunie Yeap Soon Yu ◽  
◽  
Nur Kartinee Kassim ◽  
Khalid Hamid Musa ◽  
Aminah Abdullah
Keyword(s):  
Antioxidant Activity ◽  
Chemical Constituents ◽  
Structural Elucidation

scholarly journals Determination of Chemical Constituents and Antioxidant Activities of Leaves and Stems from Jatropha cinerea (Ortega) Müll. Arg and Jatropha cordata (Ortega) Müll. Arg

Plants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 212
Author(s):  
Yeimi Cecilia Vega-Ruiz ◽  
Corina Hayano-Kanashiro ◽  
Nohemí Gámez-Meza ◽  
Luis Angel Medina-Juárez
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Biological Effects ◽  
Chemical Constituents ◽  
Weather Conditions ◽  
Antioxidant Compounds ◽  
Leaf Extracts ◽  
Methanolic Extracts ◽  
Northwestern Region ◽  
High Concentrations

Jatropha species have been shown to be an important source of secondary metabolites with different biological effects. Jatropha cinerea (Ortega) Müll. Arg and Jatropha cordata (Ortega) Müll. Arg are distributed in the Northwestern region of Mexico, are adapted to extreme weather conditions and are widely used (stems, leaves, and sap) in traditional medicine. The aim of the present study was to carry out the phytochemical characterization and the evaluation of the antioxidant activity in methanolic extracts of stems and leaves from J. cinerea and J. cordata. The compounds present in the extracts of both species were characterized by ESI-IT-MS/MS and quantified by HPLC-DAD. The results showed that the stem extracts of both species are rich in phenolic acids, while the leaf extracts are rich in flavonoids. Some of the main compounds found were gallic acid, gentisic acid, 3,4-Dihydroxybenzoic acid, vitexin, isovitexin, and catechol. Both species showed high concentrations of phenols and total flavonoids and antioxidant activity. J. cordata showed the highest antioxidant capacity and the highest concentration of phenolic compounds. Overall, both Jatropha species are a natural source of antioxidant compounds with potential biotechnological uses.

Novel Flavonoids from the Leaves ofActinidia valvataDunn: Structural Elucidation and Antioxidant Activity

Planta Medica ◽  
2010 ◽  
Vol 77 (01) ◽  
pp. 70-73 ◽  
Author(s):  
Hai-Liang Xin ◽  
Ying-Chun Wu ◽  
Yong-Hua Su ◽  
Jia-Yu Sheng ◽  
Chang-Quan Ling
Keyword(s):  
Antioxidant Activity ◽  
Structural Elucidation

Structural elucidation and cellular antioxidant activity evaluation of major antioxidant phenolics in lychee pulp

2014 ◽  
Vol 158 ◽  
pp. 385-391 ◽  
Author(s):  
Dongxiao Su ◽  
Huihui Ti ◽  
Ruifen Zhang ◽  
Mingwei Zhang ◽  
Zhengchen Wei ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Structural Elucidation ◽  
Cellular Antioxidant Activity ◽  
Activity Evaluation

scholarly journals Chemical constituents and antioxidant activity of leaves and branches ofEugenia copacabanensisKiaersk (Myrtaceae)

Química Nova ◽  
2014 ◽  
Vol 37 (3) ◽  
Author(s):  
Almir Ribeiro de Carvalho Junior ◽  
Geovany Amorim Gomes ◽  
Rafaela Oliveira Ferreira ◽  
Mário Geraldo de Carvalho
Keyword(s):  
Antioxidant Activity ◽  
Chemical Constituents

scholarly journals Chemical Constituents of Persicaria sagittata (L.) H.Gross: Antioxidant Activity and Chemotaxonomy Significance

2019 ◽  
Vol 15 (1) ◽  
Author(s):  
Idin Sahidin ◽  
Andi Bahrun ◽  
Muhammad Taufik ◽  
Agung W. Mahatva Yodha ◽  
Carla W. Sabandar ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Chemical Constituents

scholarly journals Phytochemical screening and antioxidant activity of Melastoma malabathricum and Chromolaena odorata by DPPH radical scavenging method

Food Research ◽  
2021 ◽  
Vol 5 (S4) ◽  
pp. 30-37
Author(s):  
N.H. Ismail ◽  
Amira N.H. ◽  
S.N.H.M. Latip ◽  
W.Z.W.M. Zain ◽  
S.N.A. Aani ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Nutritive Value ◽  
Chemical Constituents ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Ethanol Extract ◽  
Dpph Radical ◽  
Chromolaena Odorata ◽  
Melastoma Malabathricum ◽  
Dpph Radical Scavenging

Melastoma malabathricum and Chromolaena odorata are classified under broad-leaved weeds that are widely spread in the open land area. Melastoma malabathricum is commonly known as ‘‘senduduk’’, and C. odorata is locally known as “Pokok Kapal Terbang”. Both weeds are categorized as potential weeds as they have high nutritive value and are rich in chemical compounds. This study aimed to determine their chemical constituents and possible potential for antioxidant activity as these weeds have been reported to possess antioxidant properties. Screening of the plants was performed using standard methods and revealed the existence of various secondary metabolites such as saponins, terpenoids, phenols, tannins, and flavonoids of both weed extracts. Antioxidant activity was validated by the DPPH radical scavenging assay of M. malabathricum and C. odorata crude ethanol extract. The IC50 values for the percentage radical scavenging effects for the extracts were determined. The IC50 value of M. malabatrichum extract was 81.116 μg/mL, C. odorata was 312.903 μg/mL, Vitamin C was 31.023 μg/mL and BHA was 71.521 μg/mL respectively. The study showed that the antioxidant activity of M. malabatrichum was more potent and better than C. odorata.

scholarly journals Chemical constituents and antioxidant activity of Garcinia madruno (Kunth) Hammel

2019 ◽  
Vol 31 (4) ◽  
pp. 1283-1289 ◽  
Author(s):  
Cesar Ramirez ◽  
Jesús H. Gil ◽  
J. Camilo Marín-Loaiza ◽  
Benjamín Rojano ◽  
Diego Durango
Keyword(s):  
Antioxidant Activity ◽  
Chemical Constituents

scholarly journals Chemical Constituents and Antioxidant Activity of Ficus callosa

2011 ◽  
Vol 6 (2) ◽  
pp. 1934578X1100600 ◽  
Author(s):  
Phan Van Kiem ◽  
Nguyen Xuan Cuong ◽  
Nguyen Xuan Nhiem ◽  
Dan Thi Thuy Hang ◽  
Nguyen Hoai Nam ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Column Chromatography ◽  
Methanol Extract ◽  
Antioxidant Activities ◽  
Chemical Constituents ◽  
Oxygen Radical ◽  
Oxygen Radical Absorbance Capacity ◽  
Chemical Evidence

One new megastigmane glycoside, ficalloside (1), and eleven known compounds, were isolated from methanol extract of Ficus callosa leaves by repeated column chromatography. Their structures were established on the basis of spectral and chemical evidence. The antioxidant activities of these compounds were measured using the oxygen radical absorbance capacity (ORAC) assay. Compound 8 exhibited potent antioxidant activity of 10.6 μM trolox equivalents at the concentration of 2 μM. At this concentration, compounds 4-7 and 9-12 showed significant antioxidant activity with ranging of 2.1~6.1 μM trolox equivalents.

Sign in / Sign up

Export Citation Format

Share Document