scholarly journals Saponin, Antioxidant and Free Radical Scavenging Properties of Blighia sapida Pods

2016 ◽  
Author(s):  
A Goldson-Barnaby ◽  
R Williams
Keyword(s):  
Free Radical ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Radical Scavenging Properties ◽  
Blighia Sapida

scholarly journals Free Radical Scavenging Capacity, Carotenoid Content, and NMR Characterization of Blighia sapida Aril Oil

2018 ◽  
Vol 2018 ◽  
pp. 1-7
Author(s):  
Andrea Goldson Barnaby ◽  
Jesse Clarke ◽  
Dane Warren ◽  
Kailesha Duffus
Keyword(s):  
Free Radical ◽  
Chemical Shifts ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Monounsaturated Fatty Acids ◽  
Free Radical Scavenging ◽  
Carotenoid Content ◽  
Nmr Characterization ◽  
Radical Scavenging Properties ◽  
Blighia Sapida

Blighia sapida aril oil is rich in monounsaturated fatty acids but is however currently not utilized industrially. The oil was characterized utilizing nuclear magnetic resonance (NMR) and Fourier Transform Infrared Spectroscopy (FTIR). A spectrophotometric assay was conducted to determine the free radical scavenging properties and carotenoid content of the oil. Chemical shifts resonating between δ 5.30 and 5.32 in the 1H NMR are indicative of olefinic protons present in ackee aril oil which are due to the presence of oleic acid. A peak at 3006 cm−1 in the FTIR spectra confirms the high levels of monounsaturation. The oil has a free radical scavenging activity of 48%  ± 2.8% and carotenoid content of 21 ± 0.2 ppm.

scholarly journals Chemical Analysis, Toxicity Study, and Free-Radical Scavenging and Iron-Binding Assays Involving Coffee (Coffea arabica) Extracts

Molecules ◽  
2021 ◽  
Vol 26 (14) ◽  
pp. 4169
Author(s):  
Nuntouchaporn Hutachok ◽  
Pimpisid Koonyosying ◽  
Tanachai Pankasemsuk ◽  
Pongsak Angkasith ◽  
Chaiwat Chumpun ◽  
...  
Keyword(s):  
Free Radical ◽  
Mononuclear Cells ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Chemical Compositions ◽  
Coffee Bean ◽  
Dependent Manner ◽  
Roasted Coffee ◽  
Instant Coffee ◽  
Radical Scavenging Properties

We aimed to analyze the chemical compositions in Arabica coffee bean extracts, assess the relevant antioxidant and iron-chelating activities in coffee extracts and instant coffee, and evaluate the toxicity in roasted coffee. Coffee beans were extracted using boiling, drip-filtered and espresso brewing methods. Certain phenolics were investigated including trigonelline, caffeic acid and their derivatives, gallic acid, epicatechin, chlorogenic acid (CGA) and their derivatives, p-coumaroylquinic acid, p-coumaroyl glucoside, the rutin and syringic acid that exist in green and roasted coffee extracts, along with dimethoxycinnamic acid, caffeoylarbutin and cymaroside that may be present in green coffee bean extracts. Different phytochemicals were also detected in all of the coffee extracts. Roasted coffee extracts and instant coffees exhibited free-radical scavenging properties in a dose-dependent manner, for which drip coffee was observed to be the most effective (p < 0.05). All coffee extracts, instant coffee varieties and CGA could effectively bind ferric ion in a concentration-dependent manner resulting in an iron-bound complex. Roasted coffee extracts were neither toxic to normal mononuclear cells nor breast cancer cells. The findings indicate that phenolics, particularly CGA, could effectively contribute to the iron-chelating and free-radical scavenging properties observed in coffee brews. Thus, coffee may possess high pharmacological value and could be utilized as a health beverage.

Free radical scavenging properties and phenolic characterization of some edible plants

2009 ◽  
Vol 114 (1) ◽  
pp. 276-281 ◽  
Author(s):  
Ilkay Orhan ◽  
Murat Kartal ◽  
Mahmoud Abu-Asaker ◽  
F. Sezer Şenol ◽  
Gülderen Yilmaz ◽  
...  
Keyword(s):  
Free Radical ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Edible Plants ◽  
Radical Scavenging Properties

Antihypertensive and free radical scavenging properties of enzymatic rapeseed protein hydrolysates

2013 ◽  
Vol 141 (1) ◽  
pp. 153-159 ◽  
Author(s):  
Rong He ◽  
Adeola Alashi ◽  
Sunday A. Malomo ◽  
Abraham T. Girgih ◽  
Dongfang Chao ◽  
...  
Keyword(s):  
Free Radical ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Protein Hydrolysates ◽  
Rapeseed Protein ◽  
Rapeseed Protein Hydrolysates ◽  
Radical Scavenging Properties

scholarly journals EVALUATION OF ANTIOXIDANT AND FREE RADICAL SCAVENGING ACTIVITIES OF DIFFERENT SOLVENT EXTRACTS OF LEAVES OF PIPER UMBELLATUM

2017 ◽  
Vol 10 (2) ◽  
pp. 274
Author(s):  
Sethupandian Geetha ◽  
Kokkaiah Irulandi ◽  
Palanichamy Mehalingam
Keyword(s):  
Antioxidant Activity ◽  
Free Radical ◽  
Ethyl Acetate ◽  
Methanol Extract ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Free Radical Scavenging ◽  
Frap Assay ◽  
Radical Scavenging Properties

Objective: This study was designed to determine the Total phenol, flavonoid content, antioxidant and free radical scavenging properties of different solvent extracts of Piper umbellatum.  Methods: Different solvent extracts evaluated with DPPH radical scavenging activity and Reducing power activity.Results: The presence of phenol and flavonoid showed highly in the methanol extracts than ethyl acetate and acetone extracts. All the extracts have various level of antioxidant activity. Methanol solvent extract have good extraction and show significant antioxidant activity. The effect of reducing power of methanol extract revealed good antioxidant activity compare with other tested extracts.Conclusion: On the basis of the above results we concluded that methanol extract of Piper umbellatum whole plant extracts shows significant antioxidant activity than ethyl acetate and acetone extracts.Keywords: Piper umbellatum, Antioxidant, DPPH, FRAP assay, Polar, Non polar solvents

Synthesis, Characterization and Free Radical Scavenging Properties of Rosmarinic Acid Fatty Esters

2010 ◽  
Vol 87 (6) ◽  
pp. 615-620 ◽  
Author(s):  
Jérôme Lecomte ◽  
Luis Javier López Giraldo ◽  
Mickaël Laguerre ◽  
Bruno Baréa ◽  
Pierre Villeneuve
Keyword(s):  
Free Radical ◽  
Rosmarinic Acid ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Fatty Esters ◽  
Radical Scavenging Properties

Possible Involvement of Free Radical Scavenging Properties in the Action of Tumor Necrosis Factor-α

1997 ◽  
Vol 22 (4) ◽  
pp. 679-687 ◽  
Author(s):  
Nagahide Matsubara ◽  
Midori Hiramatsu ◽  
Rei Edamatsu ◽  
Kiminao Mizukawa ◽  
Akitane Mori ◽  
...  
Keyword(s):  
Free Radical ◽  
Tumor Necrosis Factor ◽  
Tumor Necrosis ◽  
Tumor Necrosis Factor Α ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Radical Scavenging Properties ◽  
Factor Α ◽  
Necrosis Factor
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