2-diethylaminoethanol
It is a secondary amine and a alcohol, commonly used as a chemical intermediate in the production of pharmaceuticals, agricultural chemicals, and other industrial products.
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Example 1
In this example, the oligopeptide FTLE in chili pepper seeds was extracted as follows:
1) deseeding: fresh chili peppers were taken, and the flesh was separated from the seeds to obtain chili pepper seeds;
2) pulverizing: the chili pepper seeds were pulverized and sieved by an 80 mesh to obtain chili pepper seed powder ;
3) degreasing: the chili pepper seed powder was mixed with n-hexane at a ratio of 1:10 (g/ml); the mixture was stirred and degreased overnight; n-hexane was removed by suction filtration after the degreasing was completed to obtain a chili pepper seed meal;
4) protein extraction: the degreased chili pepper seed meal was dissolved in water at a ratio of 1:10 (w/v, g/mL); the pH value of the solution was adjusted to 9.5 with a NaOH solution to conduct dissolving for 4 h; then the pH value of the solution was adjusted to 4.5 with HCl to conduct precipitating for 2 h; the reaction solution was centrifuged at 8,000 rpm for 20 min, and the precipitate was collected as a crude protein extract;
5) ultra-high pressure assisted enzymolysis: the protein isolated was dissolved in water, and was subjected to an ultra-high pressure treatment at 300 MPa for 30 min; then the product obtained by the ultra-high pressure treatment was subjected to an enzymolysis treatment, in which the enzyme was Bacillus licheniformis, the mass ratio of the enzyme to the substrate was 1:20 (w/w, g/g), the temperature was 40° C., the pH value was adjusted to 8 with 1 mol/L NaOH, and the enzymolysis treatment was performed for 3 h;
6) enzyme inactivation: at the end of the enzymolysis, the enzyme was inactivated at 90° C. for 10 min to obtain a chili pepper seed zymolyte solution;
7) isolation and purification of zymolyte: the chili pepper seed zymolyte solution was passed through a DEAE anion chromatography column, where the mobile phase included deionized water and NaCl; the eluent in a periodfrom 35 min to 45 min was collected; then, isolation and purification were conducted by an ODS-A reverse phase C18 column (hydrophobic column), where the mobile phase included deionized water and 50% methanol, and the eluent in a periodfrom 75 min to 90 min was collected. The peptide fragments in the obtained eluate were subjected to mass spectrometry identification analysis, and information of multiple peptide sequences was obtained.
Example 2
Chemical systhesis was conducted in accordance with the peptide sequences obtained by mass spectrometry identification analysis of Example 1 to obtain synthetic peptides. The effect of each peptide on HepG2 cell proliferation was studied, and the specific steps were as follows:
1) HepG2 cell culture: hepG2 cells were obtained from the ATCC cell bank and were cultured in a DMEM medium containing 10% FBS at 37° C. in a 5% CO2 cell incubator. Cells were cultured in a 25 cm 2 flask, passaged when cells were grown to a density of 70% to 90%, and seeded in a 96-well plate.
2) Peptide fragment treatment: after 24 hours of cell culture in the 96-well plate, the original DMEM medium was aspirated from the wells. DMEM containing peptide fragments at concentrations of 0.1, 0.3, and 0.6 mM were added to each well to continue culturing for 24 hours.
3) Cell proliferation rate measured by MTT method: MTT at a concentration of 5 mg/mL was added to a 96-well plate in 20 μL per well. After incubation for 4 hours, the liquid was aspirated from each well. 150 μL DMSO was added to each well. The absorbance was measured after reacting for 20 min.
The results are shown in the figure. It can be seen that the oligopeptide FTLE has a better HepG2 cell inhibition rate than other oligopeptides, which is helpful for the prevention or treatment of liver cancer.
In the description of this specification, descriptions with reference to the terms “one embodiment”, “some embodiments”, “example”, “specific examples”, or “some examples”, etc. mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this description, schematic representations of the terms above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. The different embodiments or examples and the features of the different embodiments or examples described in this description can be integrated and combined by a person skilled in the art without contradicting each other.
While embodiments of the present disclosure have been shown and described, it will be understood that the above-described embodiments are illustrative and not restrictive and that changes, modifications, substitutions, and variations may be made to the embodiments by those skilled in the art without departing from the scope of the present disclosure.
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More about "2-diethylaminoethanol"
It is a secondary amine and an alcohol, commonly used as a chemical intermediate in the production of pharmaceuticals, agricultural chemicals, and other industrial products.
DEAE is a key component in various chromatography techniques, such as DEAE Sepharose Fast Flow, DEAE-Sepharose, DEAE Sepharose fast flow column, DEAE filtermat, HiTrap DEAE FF column, and DEAE Sepharose column.
These ion exchange resins are widely used in the purification and separation of biomolecules, including proteins, nucleic acids, and other compounds.
In addition to its industrial applications, DEAE is also used in cell culture media, such as FBS (Fetal Bovine Serum), to maintain cellular growth and differentiation.
The HiTrap DEAE FF column is a popular choice for the purification of recombinant proteins and other biomolecules.
Whether you're working with pharmaceuticals, agricultural chemicals, or biomolecules, PubCompare.ai's AI-driven protocol comparison tool can help you optimize your 2-diethylaminoethanol (DEAE) research.
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