RESUMO
OBJECTIVE: To establish a near-infrared qualitative analysis model to identify the authenticity of Polygonum multiflo- rum and distinguish processed products Polygoni Multiflori Radix. METHOD: The NIR spectra were peformed on over 30 batches of P. multiflorum and Polygoni Multiflori Radix samples and the adulterants Cynanchum bungei, Pteroxygonum giraldii, Polygonum cillinerve to establish the qualitative discriminant model and the conformity test model of Polygonum multifiorum , and cluster analysis was used to analyze the samples from different origins. RESULT: The model is able to identify correctly P. multiflorum with its counterfeit, and distinguish between P. multiflorum and Polygoni multiflori Radix. CONCLUSION: Near-infrared spectroscopy can be applied in the identification of P. multiflorum, which could be used to screen Chinese herbal medicine preliminarily.
Assuntos
Polygonum/química , Medicamentos de Ervas Chinesas/química , Raízes de Plantas/química , Espectroscopia de Luz Próxima ao Infravermelho/métodosRESUMO
OBJECTIVE: To establish a method for the determination of eighteen elements (Be, Al, Cr, Mn, Ni, Cu, As, Se, Mo, Ag, Cd, Sn, Sb, Ba, Dy, Hg, Tl and Pb) in Serratulae Chinensis Radix by inductively coupled plasma-mass spectrography (ICP-MS). METHODS: After microwave digestion, 18 elements in the samples were determined by ICP-MS and the method was validated. RESULTS: A good linearity of calibration curves was obtained, the mean recovery met the analytical requirement. CONCLUSION: This method is simple, accurate and effective. It provides basis for the research of Serratulae Chinensis Radix.
Assuntos
Asteraceae/química , Espectrometria de Massas/métodos , Oligoelementos/análise , Asteraceae/crescimento & desenvolvimento , Limite de Detecção , Micro-Ondas , Raízes de Plantas/química , Controle de Qualidade , Reprodutibilidade dos Testes , Sensibilidade e EspecificidadeRESUMO
OBJECTIVE: To study the contents of cadmium in Cortex Ilicis Rotundae and provide evidence for establishing the detection limit of cadmium in its quality standard. METHODS: ICP-MS was used to determine the contents of cadmium in 18 batches of Ilex L. RESULTS: The contents of cadmium in 10 batches of Cortex Ilex Rotunda ranged from 3.4 to 10.4 mg/kg,and the contents of cadmium in Ilex asprella and Ilex pubescents were more than 0.3 mg/kg. CONCLUSION: The contents of cadmium of Cortex Ilicis Rotundae, Ilex asprella and Ilex pubescents have particular characterise, and this study provides a basic for the analysis of cadmium in Cortex Ilicis Rotundace and other plants of this genus.
Assuntos
Aquifoliaceae/química , Cádmio/análise , Espectrometria de Massas/métodos , Plantas Medicinais/química , Aquifoliaceae/classificação , Arsênio/análise , Ilex/química , Casca de Planta/química , Raízes de Plantas/química , Plantas Medicinais/classificação , Controle de Qualidade , Zinco/análiseRESUMO
OBJECTIVE: To establish a method for content determination of indirubin and indigo in Baphicacanthus cusia (Nees) Bremek. METHOD: HPLC was used with C18 column, methanol-water (75:25) as mobile phase and detecting wavelength 289 nm. RESULTS: The range linear curve was 3.875 approximately 23.25 microg/ml (indirubin), 3.05 approximately 18.3 microg/ml (indigo). The average recovery was 96.9%, RSD =3.5%, n =5 (indirubin); 96.9% RSD = 2.8%, n = 5 (indigo). CONCLUSION: The method is proper for the quality control of Baphicacanthus cusia (Nees) Bremek.