Tlc Analysis
Tlc Analysis - Related Videos
12:04
Thin-layer Chromatographic (TLC) Separations and Bioassays of Plant Extracts to Identify Antimicrobial Compounds
0 Views •
Cited by 52 •
2014
Methods are described for thin-layer chromatographic (TLC) separation of plant extracts and contact bioautography to identify antibacterial metabolites. The methods are applied to the screening of red clover phenolic compounds inhibiting hyper ammonia-producing bacteria (HAB) native to the bovine rumen.
01:11
Thin-Layer Chromatography (TLC): Overview
0 Views •
2025
Thin-layer chromatography (TLC) is a chromatography technique that separates compounds based on their polarity. TLC typically uses polar silica gel, a form of silicon dioxide, as the stationary phase. The silica gel contains hydroxyl (OH) groups on its surface, which form hydrogen bonds with polar compounds, influencing their adhesion to the stationary phase. To begin the analysis, a mixture of compounds is spotted on the starting line on the TLC plate using a thin capillary. The bottom of the...
13:02
Arabidopsis thaliana Polar Glycerolipid Profiling by Thin Layer Chromatography (TLC) Coupled with Gas-Liquid Chromatography (GLC)
0 Views •
Cited by 102 •
2011
Composition of polar lipid extracts and the fatty acid composition of individual glycerolipids are determined in a simple and robust lipid profiling experiment. For this purpose, glycerolipids are isolated by thin layer chromatography and subjected to transmethylation of their acyl groups. Fatty acyl methylesters are quantified by gas-liquid chromatography.
06:14
Estimating the Yield of Compounds on the TLC Plate via the Blue-LED Illumination Technique
0 Views •
Cited by 1 •
2022
The present protocol developed a method to estimate the yield of compounds on the TLC plate using the blue-LED illumination technique. The advantages of this approach are that it is safe, effective, inexpensive, and allows the researcher to measure multiple samples simultaneously.
15:04
A Neuronal and Astrocyte Co-Culture Assay for High Content Analysis of Neurotoxicity
0 Views •
Cited by 46 •
2009
This article describes a novel protocol and reagent set designed for sensitive measurement of neurotoxic effects of compounds and treatments on co-cultures of neurons and astrocytes using high content analysis. Results demonstrate that high content analysis represents an exciting novel technology for neurotoxicity assessment.
FAQs
Separation reflects how strongly each compound interacts with the silica gel or other stationary phase compared with the moving solvent. Compounds that interact more strongly with the stationary phase travel a shorter distance, whereas those favored by the mobile phase move farther. These differences produce distinct spot positions that help distinguish components within the same biochemical mixture.
The stationary phase provides the surface that temporarily retains compounds, while the mobile phase carries them across the plate by capillary action. Their relative interactions control migration and therefore the observed separation. Changing the solvent can alter how far components travel, making phase selection important when comparing mixture components or monitoring a biochemical reaction.
An Rf value records the relative migration of a spot on the plate, providing a concise way to describe its position. Comparing Rf values among separated spots supports qualitative assessment of sample composition and reaction progress. Because the value reflects interactions with both phases, it is interpreted in relation to the separation conditions rather than as an absolute compound measurement.
Compounds with different polarity or different affinities for the stationary and mobile phases migrate by different distances. A mixture can therefore produce multiple spots rather than a single band, revealing compositional differences. In biochemical samples, this behavior helps track distinct metabolites, lipids, amino acids, or reaction products during qualitative analysis.
Apply a small amount of sample to a plate coated with silica gel or another stationary phase. Place the plate so the solvent can move upward through the stationary material by capillary action, allowing components to separate according to their phase interactions. After migration produces separated spots, examine their positions and Rf values for interpretation.
TLC is useful when researchers need a rapid view of biochemical reaction progress or sample composition. It can help track metabolites, lipids, amino acids, and reaction products, while the resulting separation can inform qualitative assessments and purification decisions. The method is especially relevant when identifying whether distinct components are present rather than obtaining a full quantitative analysis.