Biocatalytic Synthesis of a Novel Polyaniline Derivative and Its Usage for Polypropylene Stabilization

Bi̇li̇ci̇, Ali̇; Geçibesler, İbrahim Halil; Çogal, Yunus; Kaya, İsmet

doi:10.1021/acs.iecr.7b00555

Cited by 10 publications

(1 citation statement)

References 61 publications

(113 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, it is used to prepare polymer antioxidants. Bilici and co-workers reported an oxidative polymerization reaction induced by horseradish peroxidase (HRP) for the preparation of novel polyaniline derivatives (PHCA) and 5-aminosalicylic acid. , The results of the antioxidant potential measurement indicate that PHCA possesses a good DPPH free radical scavenging capability and excellent metal ion chelating ability. However, 5-aminosalicylic acid exhibits only moderate antioxidant capability and fails to chelate metal ions.…”

Section: Enhancement Of Molecular Weightmentioning

confidence: 99%

Antimigration Polypropylene Antioxidants: A Review

Li,

Zhang,

Jiang

et al. 2024

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Hindered phenolic antioxidants have been extensively recognized and applied to boost the heat resistance and oxidative aging performance of poly(propylene) (PP) composites. Low-molecular-weight antioxidants are easy to volatilize, migrate, and be extracted from PP or PP-based products, which can directly reduce the antithermal oxidative aging effect of PP and its composites, and it can contaminate food or drugs under its packaging. The design of an efficient and durable antioxidant with antimigration performance has drawn the attention of researchers. Currently, three main approaches are explored: (I) enhancement of molecular weight, that is, high molecular weight of antioxidants can stimulate the structure stability and the resistance toward migration; (II) inorganic immobilization, which involves immobilizing the antioxidants on inorganic substrate to enhance the dispersion and the antimigration performance; and (III) intercalation-mediated assembly, which involved intercalating low-molecular-weight antioxidants into the interlayer region of a layered host to boost antimigration performance based on the host–guest interaction.

show abstract

Section: Enhancement Of Molecular Weightmentioning

confidence: 99%

Antimigration Polypropylene Antioxidants: A Review

Li,

Zhang,

Jiang

et al. 2024

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

Polymer Synthesis by Enzymatic Catalysis

Loos¹

2022

Macromolecular Engineering

View full text Add to dashboard Cite

Enzymatic polymerizations are defined as in vitro enzyme‐catalyzed syntheses of polymers that do not follow biosynthetic pathways. Polymer synthesis using biocatalytic pathways holds enormous promise in the fields of science. Use of enzymes for polymer synthesis can have tremendous environmental benefits as chemical approaches require large scale use of hazardous chemical solvents and substantial energy input. Enzymatic reactions can be carried out at ambient temperature, and reaction medium in many cases is water, which is a green solvent. Moreover, it also reduces the waste generated by chemical processes. Thus, enzymatic approaches to polymer synthesis are socially, environmentally, and economically superior to chemical approaches.

show abstract

Phytochemical Profiling, Antioxidants, Antimicrobial and Anti‐Proliferative Effect of Senna hirsuta against PC‐3 Human Prostate Cancer Cells

et al. 2022

View full text Add to dashboard Cite

The phytochemical profile, antioxidant, antibacterial, and cytotoxicity of Senna hirsuta (MÀ Sh) leaf extracts were investigated in human prostate cancer PC-3 cell lines. Antioxidant bioactive components like phenolics, tannins, and flavonoids were measured at 15.36 � 0.19, 2.97 � 0.11, and 19.77 � 0.51, respectively. An intense dose-dependent radical scavenging activity was observed for MÀ Sh with 83 % in 500 μg/mL for DPPH. MÀ Sh boosted ABTS radical inhibition from 35 % at 100 μg/ml to 70 % at 500 μg/ml, whereas hydroxyl radical scavenging was 96 % at 500 μg/ml, significantly greater than butylated hydroxytoluene (91.91 %). The maximum NO scavenging activity of MÀ Sh was 83 %, and the lipid peroxidation inhibition was 87 % at 500 μg/ml. The MÀ Sh exhibited antibacterial efficacy against Escherichia coli (25 mm), Bacillus subtilis (24 mm), and Staphylococcus aureus (21 mm). The MTT assay was used to study anti-proliferative activity, which inhibited PC-3 cell growth with an IC50 of 257.13 μg/mL over 24 hours. These results demonstrate that MÀ Sh inhibits PC-3 cell proliferation by shedding from the surface and assuming a spherical shape. Additionally, the morphology of PC-3 cells showed shrinkage, blebbing membrane condensation, and nuclear chromatin margination, indicating that MÀ Sh was cytotoxic to PC-3 Cells.

show abstract

Biocatalytic Synthesis of a Novel Polyaniline Derivative and Its Usage for Polypropylene Stabilization

Cited by 10 publications

References 61 publications

Antimigration Polypropylene Antioxidants: A Review

Antimigration Polypropylene Antioxidants: A Review

Polymer Synthesis by Enzymatic Catalysis

Phytochemical Profiling, Antioxidants, Antimicrobial and Anti‐Proliferative Effect of Senna hirsuta against PC‐3 Human Prostate Cancer Cells

Contact Info

Product

Resources

About