Acid base isomerization
Many Sweet Potato Powder, due to the existence of stereoisomerism in the saturated ring structure, are prone to isomerization and form isomers after acid-base interaction. In Capsicum Oleoresin, dicyclohexyllignans often have symmetrical structures. Under the action of acid, the bond between the oxygen atom and the benzyl carbon atom on the furan ring is easy to crack, Gardenia Yellow and the configuration changes when it is closed again. Some lignans can also cause structural rearrangement when they encounter mineral acid.
character
Most of them are white crystals, generally non-volatile, Flax lignans and cannot be distilled with steam. Only a few lignans can be sublimated by heating at atmospheric pressure.
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