Eight new dammarane-type triterpenoid saponins from .

Phytochemical investigation of led to the purification of five novel dammarane-type triterpene isolates, gypenosides B1 - B5 (-). Their structures were determined through comprehensive 1D and 2D NMR spectroscopic analyses and HRESIMS data. Of note, are inseparable mixtures of epimers due to their unstable nature, and a total of eight dammarane-type triterpene saponins were identified.

Dammarane-type saponins from Gynostemma pentaphyllum and their anti-aging activities via up-regulating mitochondria related proteins.

The importance of mitochondria in regulation of aging has been extensively recognized and confirmed. Gynostemma pentaphyllum (Thunb.) Makino, a homology of medicine and food, has been widely utilized as dietary supplement.

An effective and high-throughput sample preparation method involving demalonylation followed by an ultrahigh-performance liquid chromatography-charged aerosol detector for analyzing gypenoside XLIX and gypenoside A in Gynostemma longipes.

Gypenosides (Gps) are the major bioactive components in Gynostemma species. They include neutral Gps and acidic malonylgypenosides (MGps). MGps are abundant in Gynostemma species and can be transformed into corresponding Gps via extraction, concentration, and drying.