Tlc Plate Yield
Tlc Plate Yield - Related Videos
06:14
Estimating the Yield of Compounds on the TLC Plate via the Blue-LED Illumination Technique
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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.
12:04
Thin-layer Chromatographic (TLC) Separations and Bioassays of Plant Extracts to Identify Antimicrobial Compounds
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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.
01:31
ATP Yield
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2019
Cellular respiration produces 30 - 32 ATP per glucose molecule. Although most of the ATP results from oxidative phosphorylation and the electron transport chain (ETC), 4 ATP are gained beforehand (2 from glycolysis and 2 from the citric acid cycle). The ETC is embedded in the inner mitochondrial membrane and is comprised of four main protein complexes and an ATP synthase. NADH and FADH2 pass electrons to these complexes, which pump protons into the intermembrane space. This distribution of...
01:11
Thin-Layer Chromatography (TLC): Overview
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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...
02:22
Reaction Yield
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2020
The theoretical yield of a reaction is the amount of product estimated to form based on the stoichiometry of the balanced chemical equation. The theoretical yield assumes the complete conversion of the limiting reactant into the desired product. The amount of product that is obtained by performing the reaction is called the actual yield, and it may be less than or (very rarely) equal to the theoretical yield. Percent Yield In the case of chemical reactions, the actual yield of the product is...
FAQs
Separation depends on how each compound partitions between the adsorbent coating and the moving solvent. As the solvent rises by capillary action, compounds with different affinities travel different distances, producing separated spots. Their positions provide a basis for comparing sample components with reference materials and judging whether the expected product appears.
Standards provide a reference for interpreting a sample’s spots. By comparing position, researchers can assess whether a sample contains a compound with the expected chromatographic behavior. Comparing intensity can support an approximate estimate of recovery. This reference-based approach is useful when judging product formation or purity rather than relying on an isolated spot alone.
Spot intensity can be compared with the intensity of a standard to support an approximate assessment of recovery. A stronger or weaker visual signal provides comparative evidence, while spot presence and position help confirm that the relevant compound is present. Because the result is approximate, intensity should support, not replace, interpretation of the full plate pattern.
The plate provides visual evidence based on spot presence, position, and intensity, so it supports an approximate assessment of compound amount or recovery. It does not, from the information provided, establish an exact recovered quantity. Researchers therefore use the comparison with standards to interpret product formation, purity, or recovery without treating the plate alone as a precise measurement.
Researchers spot the biological sample or reaction product onto the adsorbent-coated plate, allow the solvent to move through the layer by capillary action, and then examine the resulting spots. They compare each spot’s presence, position, and intensity with standards. This sequence provides evidence for product formation, purity, or approximate recovery.
A spot in the expected position provides evidence that the relevant compound may be present, while its intensity can support an approximate recovery comparison with a standard. The overall spot pattern also helps assess purity. These observations let researchers monitor whether a biological reaction or preparation produced the intended outcome, while recognizing that the evidence remains approximate.
In biology, this approach can support analysis of lipids, pigments, metabolites, and other small molecules. It is useful when researchers need rapid visual evidence of product formation, purity, or approximate recovery after separating components. Comparing sample spots with standards helps connect the observed plate pattern to the compound or biological material under investigation.