A novel dammarane-type triterpene oligoglycoside, named ginsenoside-Rg6 3, was isolated from the stem-leaves of Panax ginseng C. A. Mey., together with two known ones, 20(S)-ginsenoside-Rg2 1 and 20(R)-ginsenoside-Rg2...A novel dammarane-type triterpene oligoglycoside, named ginsenoside-Rg6 3, was isolated from the stem-leaves of Panax ginseng C. A. Mey., together with two known ones, 20(S)-ginsenoside-Rg2 1 and 20(R)-ginsenoside-Rg2 2. On the basis of chemical and physicochemical evidence , the structure of ginsenoside-Rg6 have been elucidated as 6-O-(-L-rhamnosyl-(1?2)-(-D-glucopyranosyl-dammarane-(E)-20(22), 24-diene-3(, 6(, 12(-triol.展开更多
A water-soluble pectin SB_~1-1 was isolated and purified from the root of Panax ginseng C. A. Mey. The HPLC analysis indicates that SB_~1-1 is homogenous. Its molecular weight was estimated via gel filtration to be 10...A water-soluble pectin SB_~1-1 was isolated and purified from the root of Panax ginseng C. A. Mey. The HPLC analysis indicates that SB_~1-1 is homogenous. Its molecular weight was estimated via gel filtration to be 10000. The GC analysis indicated that it contains the monosaccharides of GalA, Gal, Ara and Rha. Their molar ratio is 2.10∶1.00∶0.12∶0.13. Partial hydrolysis with acid, pectinase treatment, periodate oxidation, Smith degradation, methylation analyses, GC/MS analyses and NMR analyses were used for the structure analyses of SB_~1-1 . The results reveal that SB_~1-1 has a lower branched structure. The main chain is composed of GalA and Gal; the inner part is α-1,4-linked-GalA; the border is 1,4-linked-Gal. Some of the 1,4-linked-GalA and 1,4-linked-Gal residues are substituted at O6. On an average, there is one branch for every ten hexose residues. The side chain is composed of 1,6-linked-Gal and 1,3,6-linked-Gal. The nonreduced end is composed of Rha, Ara and Gal. The main glycosidic link of SB_~1-1 has an α configuration.展开更多
A high performance liquid chromatography（HPLC） with UV detection was established for simultaneous determination of saponins in the leaf of Panax ginseng C. A. Mey. Nine ginsenosides（Rbl, Rb2, Rb3, Rc, Rd, F1, F2, F...A high performance liquid chromatography（HPLC） with UV detection was established for simultaneous determination of saponins in the leaf of Panax ginseng C. A. Mey. Nine ginsenosides（Rbl, Rb2, Rb3, Rc, Rd, F1, F2, F3, F5） and notoginsenoside Fe（NFe） were studied. Among the saponins, the ginsenosides F1, F2, F3, F5 and NFe were determined by HPLC-UV method for the first time. The determination of the ginsenosides via the HPLC-UV method was performed on a reversed-phase C18 column with gradient elution in 40 min. The linearity, precision, accuracy, and detection limit for determining the saponins were studied and the samples from different areas in China were analyzed. The HPLC-ESI-MS was used to identify the saponins. The results indicate that the HPLC-UV provided a good accuracy, reproducibility and sensitivity for the determination of the ten saponins.展开更多
Saponins,the major bioactive components of Panax ginseng C.A.Mey.,are gradually emerging as research hotspots owing to the possession of various pharmacological activities.This review updates the ginsenosides list fro...Saponins,the major bioactive components of Panax ginseng C.A.Mey.,are gradually emerging as research hotspots owing to the possession of various pharmacological activities.This review updates the ginsenosides list from P.ginseng and the steam-processed ginseng(red ginseng and black ginseng)up to 271 by June of 2024,encompassing 243 saponins from different parts of P.ginseng(roots,stems,leaves,flowers,berries,and seeds),103 from red ginseng,and 65 from black ginseng,respectively.Among 271 saponins,there are a total of 249(1–249)dammarane type(with a–z subtypes)tetracyclic triterpene saponins reported from each part of P.ginseng and steam-processed ginseng,two(250–251)lanostane type tetracyclic triterpene saponins identified from red ginseng,18(252–269)oleanane type pentacyclic triterpenoid saponins discovered from each part of P.ginseng and steam-processed ginseng,and two(270–271)ursane type pentacyclic triterpenoid saponins reported from red ginseng.Overall,this review expounds on the chemical diversity of ginsenosides in various aspects,such as chemical structure,spatial distribution and subtype comparison,processed products,and transformation.This facilitates more indepth research on ginsenosides and contributes to the future development of ginseng.展开更多
Using ginseng (Panax ginseng C. A. Mey.) hairy roots as a bioreactor, exogenous hydroquinone (HQ) was added aseptically to suspension of hairy roots on 22 d. Twenty-four hours after the addition of HQ, the hairy roots...Using ginseng (Panax ginseng C. A. Mey.) hairy roots as a bioreactor, exogenous hydroquinone (HQ) was added aseptically to suspension of hairy roots on 22 d. Twenty-four hours after the addition of HQ, the hairy roots were separated from the medium. Through identification of TLC and HPLC,it was proved that hydroquinone has been bioconversed into arbutin, and arbutin from hairy root of P. ginseng was isolated and identified.展开更多
基金The Ninth 5-year Plan" Key Science and Technique R & D Programme Foundation of China (96-901-01-12A).
文摘A novel dammarane-type triterpene oligoglycoside, named ginsenoside-Rg6 3, was isolated from the stem-leaves of Panax ginseng C. A. Mey., together with two known ones, 20(S)-ginsenoside-Rg2 1 and 20(R)-ginsenoside-Rg2 2. On the basis of chemical and physicochemical evidence , the structure of ginsenoside-Rg6 have been elucidated as 6-O-(-L-rhamnosyl-(1?2)-(-D-glucopyranosyl-dammarane-(E)-20(22), 24-diene-3(, 6(, 12(-triol.
文摘A water-soluble pectin SB_~1-1 was isolated and purified from the root of Panax ginseng C. A. Mey. The HPLC analysis indicates that SB_~1-1 is homogenous. Its molecular weight was estimated via gel filtration to be 10000. The GC analysis indicated that it contains the monosaccharides of GalA, Gal, Ara and Rha. Their molar ratio is 2.10∶1.00∶0.12∶0.13. Partial hydrolysis with acid, pectinase treatment, periodate oxidation, Smith degradation, methylation analyses, GC/MS analyses and NMR analyses were used for the structure analyses of SB_~1-1 . The results reveal that SB_~1-1 has a lower branched structure. The main chain is composed of GalA and Gal; the inner part is α-1,4-linked-GalA; the border is 1,4-linked-Gal. Some of the 1,4-linked-GalA and 1,4-linked-Gal residues are substituted at O6. On an average, there is one branch for every ten hexose residues. The side chain is composed of 1,6-linked-Gal and 1,3,6-linked-Gal. The nonreduced end is composed of Rha, Ara and Gal. The main glycosidic link of SB_~1-1 has an α configuration.
文摘A high performance liquid chromatography（HPLC） with UV detection was established for simultaneous determination of saponins in the leaf of Panax ginseng C. A. Mey. Nine ginsenosides（Rbl, Rb2, Rb3, Rc, Rd, F1, F2, F3, F5） and notoginsenoside Fe（NFe） were studied. Among the saponins, the ginsenosides F1, F2, F3, F5 and NFe were determined by HPLC-UV method for the first time. The determination of the ginsenosides via the HPLC-UV method was performed on a reversed-phase C18 column with gradient elution in 40 min. The linearity, precision, accuracy, and detection limit for determining the saponins were studied and the samples from different areas in China were analyzed. The HPLC-ESI-MS was used to identify the saponins. The results indicate that the HPLC-UV provided a good accuracy, reproducibility and sensitivity for the determination of the ten saponins.
基金funded by the Innovation Platform(base)and Talent Special Project(No.20210502005ZP)Key Research and Development Program of Jilin Province(No.20230204038YY,20240305052YY,20210204149YY)。
文摘Saponins,the major bioactive components of Panax ginseng C.A.Mey.,are gradually emerging as research hotspots owing to the possession of various pharmacological activities.This review updates the ginsenosides list from P.ginseng and the steam-processed ginseng(red ginseng and black ginseng)up to 271 by June of 2024,encompassing 243 saponins from different parts of P.ginseng(roots,stems,leaves,flowers,berries,and seeds),103 from red ginseng,and 65 from black ginseng,respectively.Among 271 saponins,there are a total of 249(1–249)dammarane type(with a–z subtypes)tetracyclic triterpene saponins reported from each part of P.ginseng and steam-processed ginseng,two(250–251)lanostane type tetracyclic triterpene saponins identified from red ginseng,18(252–269)oleanane type pentacyclic triterpenoid saponins discovered from each part of P.ginseng and steam-processed ginseng,and two(270–271)ursane type pentacyclic triterpenoid saponins reported from red ginseng.Overall,this review expounds on the chemical diversity of ginsenosides in various aspects,such as chemical structure,spatial distribution and subtype comparison,processed products,and transformation.This facilitates more indepth research on ginsenosides and contributes to the future development of ginseng.
文摘Using ginseng (Panax ginseng C. A. Mey.) hairy roots as a bioreactor, exogenous hydroquinone (HQ) was added aseptically to suspension of hairy roots on 22 d. Twenty-four hours after the addition of HQ, the hairy roots were separated from the medium. Through identification of TLC and HPLC,it was proved that hydroquinone has been bioconversed into arbutin, and arbutin from hairy root of P. ginseng was isolated and identified.
