Functional group reaction
Capsicum Oleoresin often have alcohol hydroxyl, phenolic hydroxyl, methoxy, methylene dioxy, carboxyl and lactone groups, so they also have the Sweet Potato Powder and reactions of these functional groups. Ferric chloride or diazotization reagent can be used for the detection of phenolic hydroxyl group, Labat reagent (Bitter Melon Extract concentrated sulfuric acid reagent) or ecgrine reagent (chromotropic acid concentrated sulfuric acid reagent) can be used for the detection of methylene dioxy.
Neolignans
In this kind of Flax lignans, the two phenylpropanoids are usually connected by benzene ring and side chain or by oxygen bond. The γ – carbon atoms of the side chain are mostly non oxidized.
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