phytochemical
Determination of phenolics and flavonoids
EGP150.00 – EGP750.00 / sampleFlavonoids and phenolics are among the abundant compounds available in extracts of natural products. We can help you determine the total phenolic and flavonoid content in your sample, and even estimate them qualitatively and quantitatively.
Extraction of natural products
EGP400.00 – EGP650.00 / Kg + cost of your chosen solventsExtraction is the crucial first step in the analysis of medicinal plants, because it is necessary to extract the desired chemical components from the plant materials for further separation and characterization. We can help you extract your target compounds by maceration, ultrasonic-assisted extraction or mechanical extraction.
Total Tannin Content
EGP350.00 / Compound (including calibration curve)Total Tannin Content
Tannins are high molecular weight phenolic compounds having the ability to precipitate proteins. They are class of secondary metabolites that widely distributed in many plants. Two types of tannins are commonly found in natural products: hydrolysable and condensed tannins. Hydrolysable tannins are complex monomeric or oligomeric polyesters of phenolic acids (gallic or ellagic) with D-glucose or related sugars. Hydrolysable tannins include gallo-, ellagi-tannins and tannic acid. While condensed tannins, also named procyanidins, are dimers to polymers of flava-3-ol (such as catechin). Examples of condensed tannins are procyanidin A2 and B2.