Alkaloids, flavanoids, reducing sugars will get solublized in ethanol extracts while terpenes, terpenoids, saponin, steroids will get solublized in hexane.
As ethanol is a polar solvent so all polar compounds might be dissolved easily in ethanol like phenolic acid compounds and flavonoids. While hexan is a non-polar solvent that may dissolve all non-polar and lipophilic compounds such as carotenoids (lycopene, beta-carotene). For more soecific details about the name of compounds and its chemical formula you may test your sample through the liquid chromatography mass spectrometry (LC-MSMS) and gas chromatography mass spectrometry (GC-MS) also you can quantify the known compounds through HPLC technique.
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Some solvents used for the extraction of different classes of compounds are:
1. Water is used for the extraction of anthocyanins, starches, tannins, saponins, terpenoids, polypeptides and lectin.
2. Ethanol is used for the extraction of tannins, polyphenols, polyacetylenes, flavonols, terpenoids, sterols and alkaloids.
3. Methanol is used for the extraction of anthocyanins, terpenoids, saponins, tannins, xanthoxylene, totarol, quassinoids, lactones, flavones, phenones, and polyphenols.
4. Chloroform is used for the extraction of terpenoids and flavonoids
5. Ether is used for the extraction of alkaloids, terpenoids, coumarins and fatty acids.
6. Acetone is used for the extraction of phenol and flavonols.