scholarly journals Conjugation Length Dependence of Free Radical Scavenging Efficiency of Retinal and Retinylisoflavonoid Homologues

ACS Omega ◽  
2020 ◽  
Vol 5 (23) ◽  
pp. 13770-13776
Author(s):  
Yang-Lin Jiang ◽  
Bai-Ling Chen ◽  
Xiao-Kun Yan ◽  
Yi Xu ◽  
Chen-Chen Zhao ◽  
...  
Keyword(s):  
Free Radical ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Conjugation Length ◽  
Length Dependence ◽  
Scavenging Efficiency

Free radical scavenging efficiency of Nano-Se in vitro

2003 ◽  
Vol 35 (7) ◽  
pp. 805-813 ◽  
Author(s):  
Bo Huang ◽  
Jinsong Zhang ◽  
Jingwu Hou ◽  
Chang Chen
Keyword(s):  
Free Radical ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Scavenging Efficiency

scholarly journals Complexes of 1,3-Diisobutyl Thiourea with Copper(I), Zinc(II) and Mercury(II): Their Antioxidant and Antibacterial Evaluation

Crystals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 989
Author(s):  
Adnan Shahzad ◽  
Ezzat Khan ◽  
Muhammad Said ◽  
Gul Shazada Khan ◽  
Mian Gul Syed ◽  
...  
Keyword(s):  
Free Radical ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Free Radical Scavenging Activity ◽  
Scavenging Activity ◽  
Data Set ◽  
Standard Drug ◽  
E Coli ◽  
Scavenging Efficiency

The reaction of 1,3-Diisobutyl thiourea (Tu) with metal salts, {[CuX (X = Cl, I)], [ZnCl2] and [HgI2] in an appropriate stoichiometric ratio afforded the corresponding metal complexes [Tu2CuCl] (1), [Tu3CuI] (2), [Tu2ZnCl2] (3) and [Tu2HgI2] (4) in good yields. The FT-IR data show typically broad signals (3278–3288 cm−1) attributed to the involvement of NH bonds in extensive hydrogen bonding. The structures of complexes were proposed based on a spectroscopic data set. Compounds 1 and 2 were additionally characterized by single-crystal X-ray analysis. Complexes 1–4 were tested for their free radical scavenging efficiency using 2,2-diphenyl-1-picrylhydrazyl free radical (hereafter abbreviated as DPPH). The free radical scavenging activity was a function of decrease in the resultant absorption of DPPH solution after the mixing of an appropriate concentration of the respective complex. The activity of complexes was determined to be dose dependent and increased concentration of the complex resulted in improved antioxidant activity. Compound 1 was found to be the most efficient, with 79.9% free radical scavenging activity. Complexes were also tested for their efficiency against selected strains of bacteria (E. coli, S. flexneri, S. typhi, and P. aeruginosa) and the activities were compared to commercially available standard drug cephradine. Compound 1 was more active against P.aeruginosa (ZI 13.25), while compound 4 was found to be more active against E. coli (ZI 11.0), S. flexneri (ZI 11.2), and S. typhi (ZI 10.5).

scholarly journals FREE RADICAL SCAVENGING POTENCY OF FIVE DATE PALM (PHOENIX DACTYLIFERA L.) FRUIT VARIETIES CULTIVATED IN KHAIRPUR MIR’S

2021 ◽  
Vol 36 (2) ◽  
pp. 101-105
Author(s):  
Z. A. Mahar ◽  
G. Q. Shar ◽  
A. R. Shaikh
Keyword(s):  
Free Radicals ◽  
Free Radical ◽  
Date Palm ◽  
Water Solution ◽  
Radical Scavenging ◽  
Phoenix Dactylifera ◽  
Free Radical Scavenging ◽  
Mature Stage ◽  
Phoenix Dactylifera L ◽  
Scavenging Efficiency

The fruit of date palm (Phoenix dactylifera L.) is well-known for its several health blessings and dietary values and its wonderful supply of phenolics compounds and holds relatively exquisite antioxidant capacity. Therefore, the goal of this study is to investigate the free radical scavenging efficiency of the five-date types Aseel, Kupro, Karbala Wari, Asul Khurmo and Gajar Wari cultivated in district Khairpur Mir’s. These date varieties were screened with the help of DPPH assay to evaluate their free radical scavenging efficiency in different solvents. From the statistics, it turned into scrutinize that each extract has interesting antioxidant functionality against free radicals. The methanolic extract has more potential to incline the free radicals.  It was concluded that the date variety Asul Khumro is shown excellent activity because it possesses lowest IC50 value 17.823µg/mL, followed by Gajar Wari 20.679 µg/mL in methanolic solution while Kupro 20.937µg/mL in Methanol + Water solution then relaxation of different date varieties at their mature Tamar level. It is concluded from the results that all dates fruit varieties at their final mature stage holds higher antioxidant potency and indicated that these date fruits have natural antioxidants.

Synthetic Aspects and Free-Radical Scavenging Efficiency of Polyhydroxylated C60

1997 ◽  
Vol 5 (7) ◽  
pp. 1407-1421 ◽  
Author(s):  
Chi Yu ◽  
Jayandra B. Bhonsle ◽  
Lee Y. Wang ◽  
Jao G. Lin ◽  
Bao-Ji Chen ◽  
...  
Keyword(s):  
Free Radical ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Scavenging Efficiency
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