SCREENING BACTERIAL AND RADICAL SCAVENGING PROPERTIES OF CHOSEN PLANT EXTRACTS USING THIN-LAYER CHROMATOGRAPHY–DIRECT BIOAUTOGRAPHY

2014 ◽  
Vol 37 (20) ◽  
pp. 2882-2891 ◽  
Author(s):  
Wioleta Jesionek ◽  
Irena Maria Choma ◽  
Barbara Majer-Dziedzic ◽  
Irena Malinowska
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Plant Extracts ◽  
Radical Scavenging ◽  
Direct Bioautography ◽  
Radical Scavenging Properties ◽  
Layer Chromatography

scholarly journals Synthesis, Characterization and Antioxidant Activity of 2-Aryl Benzimidazole Derivatives

2020 ◽  
Vol 8 (2) ◽  
pp. 35-44
Author(s):  
Vineet Kumar Singh ◽  
Amrita Parle
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Radical Scavenging ◽  
Aromatic Aldehydes ◽  
Benzimidazole Derivatives ◽  
Benzoic Acids ◽  
Antioxidant Assay ◽  
Layer Chromatography

Objective: To synthesize benzimidazole derivatives, characterize them by 1HNMR and ATIR techniques and evaluate their antioxidant activity. Methods: In the present study 19 benzimidazole derivatives were synthesized by reacting O-phenylenediamine as the primary reactant with different aromatic aldehydes and benzoic acids. Reactions were monitored using thin layer chromatography technique, and the newly synthesized derivatives were characterized by ATIR and 1HNMR techniques. The antioxidant assay was performed using ABTS [2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid)] method and DPPH [2,2-diphenyl-1-picrylhydrazyl] method. Results: Compounds BNZ-1, BNZ-2, BNZ-3, BNZ-9, and BNZ-10 showed comparable antioxidant activity to ascorbic acid at higher dose. Conclusion: The synthesized benzimidazole derivatives have significant radical scavenging potential.    

Thin-Layer Chromatography for Chlorinated Pesticide Residue Analysis without Cleanup

1964 ◽  
Vol 47 (2) ◽  
pp. 306-310
Author(s):  
H V Morley ◽  
M Chiba
Keyword(s):  
Gas Chromatography ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Plant Extracts ◽  
Residue Analysis ◽  
Rapid Screening ◽  
Pesticide Residue Analysis ◽  
Cleanup Procedure ◽  
Layer Chromatography

Abstract Thin-layer chromatography on silica gel may be used for the determination of chlorinated pesticide residues in some plant extracts without prior cleanup, thus eliminating the possible loss of pesticides during the cleanup procedure. Rapid screening of a large number of samples is thus possible with consequent saving of time and labor. When necessary, thin-layer chromatography may be used as a prior cleanup for gas chromatography.

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