Effect of alkyl chain length on one-electron oxidation of bis(alkyl carboxylic acid) selenides: implication on their antioxidant ability

RSC Advances ◽  
2015 ◽  
Vol 5 (82) ◽  
pp. 66621-66627 ◽  
Author(s):  
B. G. Singh ◽  
S. A. Nadkarni ◽  
V. K. Jain ◽  
K. I. Priyadarsini
Keyword(s):  
Carboxylic Acid ◽  
Chain Length ◽  
Alkyl Chain ◽  
Peroxyl Radical ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Alkyl Chain Length ◽  
Propanoic Acid ◽  
Scavenging Activity ◽  
Antioxidant Ability

Formation of a stable five membered transient in seleno bis(propanoic acid) reduces its radiolytic degradation and enhances its peroxyl radical scavenging activity.

scholarly journals Responsive Polyesters with Alkene and Carboxylic Acid Side-Groups for Tissue Engineering Applications

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1636
Author(s):  
Stella Afroditi Mountaki ◽  
Maria Kaliva ◽  
Konstantinos Loukelis ◽  
Maria Chatzinikolaidou ◽  
Maria Vamvakaki
Keyword(s):  
Carboxylic Acid ◽  
Chain Length ◽  
Main Chain ◽  
Alkyl Chain ◽  
Click Reaction ◽  
Irradiation Time ◽  
Alkyl Chain Length ◽  
Polymer Chains ◽  
Condensation Polymerization ◽  
L929 Fibroblast

Main chain polyesters have been extensively used in the biomedical field. Despite their many advantages, including biocompatibility, biodegradability, and others, these materials are rather inert and lack specific functionalities which will endow them with additional biological and responsive properties. In this work, novel pH-responsive main chain polyesters have been prepared by a conventional condensation polymerization of a vinyl functionalized diol with a diacid chloride, followed by a photo-induced thiol-ene click reaction to attach functional carboxylic acid side-groups along the polymer chains. Two different mercaptocarboxylic acids were employed, allowing to vary the alkyl chain length of the polymer pendant groups. Moreover, the degree of modification, and as a result, the carboxylic acid content of the polymers, was easily tuned by varying the irradiation time during the click reaction. Both these parameters, were shown to strongly influence the responsive behavior of the polyesters, which presented adjustable pKα values and water solubilities. Finally, the difunctional polyesters bearing the alkene and carboxylic acid functionalities enabled the preparation of cross-linked polyester films by chemically linking the pendant vinyl bonds on the polymer side groups. The biocompatibility of the cross-linked polymers films was assessed in L929 fibroblast cultures and showed that the cell viability, proliferation, and attachment were greatly promoted on the polyester surface, bearing the shorter alkyl chain length side groups and the higher fraction of carboxylic acid functionalities.

Anti-hemolytic and Peroxyl Radical Scavenging Activity of Organoselenium Compounds: An In Vitro Study

2010 ◽  
Vol 140 (2) ◽  
pp. 127-138 ◽  
Author(s):  
B. Santhosh Kumar ◽  
Amit Kunwar ◽  
Beena G. Singh ◽  
Adeel Ahmad ◽  
K. Indira Priyadarsini
Keyword(s):  
Peroxyl Radical ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
In Vitro Study ◽  
Vitro Study ◽  
Scavenging Activity ◽  
Organoselenium Compounds

Peroxyl radical scavenging activity of Ginkgo biloba extract EGb 761

1995 ◽  
Vol 49 (11) ◽  
pp. 1649-1655 ◽  
Author(s):  
Indrani Maitra ◽  
Lucia Marcocci ◽  
Marie Therese Droy-Lefaix ◽  
Lester Packer
Keyword(s):  
Ginkgo Biloba ◽  
Peroxyl Radical ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Ginkgo Biloba Extract ◽  
Scavenging Activity ◽  
Egb 761

scholarly journals Peroxyl Radical-Scavenging Activity of Plasma Determined by Electron Paramagnetic Resonance.

1999 ◽  
Vol 27 (2) ◽  
pp. 103-112 ◽  
Author(s):  
Takaaki FUJII ◽  
Toshikazu YOSHIKAWA ◽  
Yuji NAITO ◽  
Toru TANIGAWA ◽  
Motoharu KONDO ◽  
...  
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Peroxyl Radical ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Scavenging Activity ◽  
Paramagnetic Resonance ◽  
Electron Paramagnetic

Alkyl peroxyl radical-scavenging activity of catechins

1998 ◽  
Vol 49 (8) ◽  
pp. 2379-2382 ◽  
Author(s):  
Mayumi Nakao ◽  
Susumu Takio ◽  
Kanji Ono
Keyword(s):  
Peroxyl Radical ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Scavenging Activity
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