character
Most of them are white crystals, generally non-volatile, Mangiferin and cannot be distilled with steam. Only a few lignans can be sublimated by heating at atmospheric pressure.
solubility
Free Capsicum Oleoresin are lipophilic, generally insoluble in water, but easily soluble in lipophilic organic solvents and ethanol.
Lignans with phenolic hydroxyl groups are also soluble in alkaline aqueous solutions. When lignans combine with sugar to form glycosides, the Ginkgo Biloba Extract and water solubility of lignans increase.
Optical activity
Bitter Melon Extract usually have multiple chiral carbon atoms or chiral centers, so most of them have optical activity. The physiological activity of lignans is often related to the configuration of chiral carbon. Therefore, attention should be paid to the operating conditions in the extraction process to avoid structural changes of the extracted components.
没有评论:
发表评论