Organic Extraction Method
Organic Extraction Method - Related Videos
04:33
Circulating miRNA Extraction: A Method to Isolate miRNA from Plasma Samples Via Organic Extraction and Small RNA Enrichment
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2023
This video describes the extraction of circulating microRNA from plasma samples of colorectal cancer patients using organic extraction followed by glass-fiber column enrichment. miRNAs are stable in biological fluids such as serum and plasma, which renders them ideal circulating biomarkers for cancer diagnosis, prognosis, and treatment decision-making and monitoring. This method will help identify new circulating biomarkers capable of predicting clinical outcomes in patients.
06:30
Efficient Purification of Elastin-Like Polypeptides (ELPs) from E. coli Using an Organic Solvent-based Extraction and Precipitation Method
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2026
This protocol describes a rapid, reproducible organic solvent-based extraction and precipitation method for purifying elastin-like polypeptide (ELP) from Escherichia coli, providing a potentially scalable alternative to conventional ELP purification methods.
11:03
A Method for Extracting Pigments from Squid Doryteuthis pealeii
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Cited by 4 •
2016
A protocol for the extraction of pigments from the nanostructured granules in squid Doryteuthis pealeii chromatophores is presented.
03:59
miRNA Extraction: A Method to Extract miRNA from Plasma Sample
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2023
MicroRNAs (miRNAs) are tissue specific, small, non-coding RNAs regulating gene expression, and could represent ideal candidates for early detection of lung cancer. In the featured protocol, we will isolate microRNA from patient blood samples for early lung cancer screening.
00:56
Extraction: Advanced Methods
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2024
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is formed in...
FAQs
Polarity and solubility determine how strongly each compound favors the organic phase or the other liquid phase. When a sample contacts an immiscible organic solvent, molecules distribute between the layers according to these properties. This behavior allows compounds with different chemical characteristics to become enriched in separate fractions, improving the suitability of each fraction for later chemical or biological analysis.
Immiscibility creates distinct solvent layers that can be separated after the sample is mixed. Without this separation, compounds would remain in a combined liquid mixture, making it difficult to recover an enriched extract. The resulting layers provide a practical basis for isolating selected chemical components from complex biological or natural-product samples before downstream characterization.
Different compound classes show different solubility and polarity preferences, so they do not partition identically between the phases. This selective distribution can enrich lipids, metabolites, or candidate bioactive substances in an extract. The separated material can then be examined by chromatography or compound-characterization methods, helping researchers study chemical composition rather than the original complex mixture as a whole.
A typical workflow begins by combining the sample with an immiscible organic phase. After mixing, the liquid phases are allowed to separate, and the relevant layer is collected. The extract may then be dried or concentrated before analysis. These preparation steps convert material from cells, tissues, or natural products into a form more suitable for chemical and biological investigation.
Cancer researchers can apply the method to cells, tissues, or natural products when they need to examine extracted lipids, metabolites, or potential bioactive compounds. The resulting fractions support chromatography, compound characterization, and biomarker studies. It can also prepare samples for evaluating substances that may show anticancer activity, while keeping chemical analysis focused on selected extractable components.
Prepared extracts can reveal chemical features of a sample through chromatography and compound characterization, and they can support comparisons relevant to biomarker research. In studies of natural products or biological material, extracts also provide a basis for evaluating substances with possible anticancer activity. Their value lies in connecting separated chemical fractions with analytical or biological questions in cancer research.