Morphological and chemical studies of artificial Andrographis paniculata polyploids / 中国天然药物

Andrographis paniculata (Burm. f.) Nees (AP) is commonly used for the treatment of many infectious diseases and has been cultivated widely in Asian countries, and has been included in United States Pharmacopoeia as a dietary supplement, but the cultivars of A. paniculata are not abundant due to its self-pollinated. With the aims to enrich AP resources and provide materials for after breeding we explored the polyploidy induction. Different explants, colchicine concentration, and treatment time were tested. After identification by flow cytometry, eleven polyploid plants with different morphologic traits were obtained. The agronomic traits and andrographolide concentration of the polyploids were improved greatly. One of the polyploids (serial 3-7) was chosen for further study. The traits of the second and third generation polyploids (serial 3-7) were stable. Compared with the normal plants, the seeds (2nd generation) weight increased by 31%, and the andrographolide concentration of the leaves increased by 14% (2nd) and 28% (3rd). In conclusion, AP autopolyploids with different morphologic traits were established successfully for the first time, and the polyploids induction might be effective for crop improvement of AP.

Morphological and chemical studies of artificial Andrographis paniculata polyploids / 中国天然药物

Andrographis paniculata (Burm. f.) Nees (AP) is commonly used for the treatment of many infectious diseases and has been cultivated widely in Asian countries, and has been included in United States Pharmacopoeia as a dietary supplement, but the cultivars of A. paniculata are not abundant due to its self-pollinated. With the aims to enrich AP resources and provide materials for after breeding we explored the polyploidy induction. Different explants, colchicine concentration, and treatment time were tested. After identification by flow cytometry, eleven polyploid plants with different morphologic traits were obtained. The agronomic traits and andrographolide concentration of the polyploids were improved greatly. One of the polyploids (serial 3-7) was chosen for further study. The traits of the second and third generation polyploids (serial 3-7) were stable. Compared with the normal plants, the seeds (2nd generation) weight increased by 31%, and the andrographolide concentration of the leaves increased by 14% (2nd) and 28% (3rd). In conclusion, AP autopolyploids with different morphologic traits were established successfully for the first time, and the polyploids induction might be effective for crop improvement of AP.

Determination of Andrographolide and 14-Deoxy-11, 12 - didehydroandrographolide From Herba Andro-graphis in Various Growing Periods / 中药新药与临床药理

Objective To supply the basic research material for the optimal collecting time of Herba Andrographis. Methods A RP - HPLC method was used for the determination of Andrographolide and 14 - Deoxy - 11, 12 - didehy-droandrographolide from the stems and leaves of Herba Andrographis (cultured under GAP) in various growing periods on a Lichrospher RP - C18 (4. 6 mm? 250 mm, 5?m) column. The mobile phase was methanol - water (60:40), and the detection wavelength were set at 226 nm and 254 nm respectively. Results In different growing periods , contents of Andrographolide and 14 - Deoxy-11, 12 - didehydroandrographolide were higher in the sample collected in August and September. And for the same batch of sample, the contents in leaves are higher than those in the stems. Conclusion The phenophase from staminal time to pre - flowering period is the optimal collecting time for this herbal medicine, and leaves as medical part will be better than other parts.

Quality standard for Lixieling Pill / 中成药

AIM: To establish the quality standard for Lixieling Pill(Herba Andrographis; Radix Sophorae flavescentis etc.). METHODS: Herba Andrographis and Radix Sophorae flavescentis in Lixieling Pill were identified by TLC. Andrographolide, dehydroandrographolide, matrine and oxgmatrine of pill were determined by HPLC together. RESULTS: The characteristic identification by TLC was distinct and highly specific. The quantitative evaluation of andrographolide had the linear range of 0.969 -2.422 ?g, The average recovery was 98.45% and RSD was 0.88. The quantitative evaluation of dehydroandrographolide had the linear range of 0.481 -1.204 ?g , The average recovery was 100.53% and RSD was 0.63. The quantitative evaluation of matrine had the linear range of 1.032 -2.064 ?g , The average recovery was 99.06% and RSD was 1.04. The quantitative evaluation of oxgmatrine had the linear range of 1.016 -2.032 ?g , The average recovery was 99.67% and RSD was 1.20. CONCLUSION: The method is reliable, accurate and specific. It can be used for quality control of Lixieling Pill.