Method for rapidly measuring content of five saponins in radix-notoginseng medicinal materials with near infrared spectroscopy method and application
A near-infrared spectroscopy and near-infrared spectroscopy technology, which is applied in the field of traditional Chinese medicine research, can solve time-consuming and labor-intensive problems, achieve efficient technical methods, save manpower and material resources, and shorten test time.
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[0043] 1 Sample collection: 173 groups of different parts of Panax notoginseng (including notches, main roots, tendons, fibrous roots, etc.), different origins (including Wenshan Prefecture, Honghe Prefecture, Kunming City, Yuxi City, etc.), different sizes and specifications The notoginseng samples were vacuum-dried, crushed and passed through a 280 μm sieve.
[0044] 2 methods
[0045] 2.1 Determination of the contents of five medicinal saponins in samples by HPLC
[0046] 2.1.1 Preparation of the test solution: Accurately weigh 0.5 g of Panax notoginseng powder, extract with 70% methanol water (v / v) 40 mL, and ultrasonically (working frequency 53 kHz) for 1 hour. Filter and wash the residue well with 70% methanol to allow complete transfer. Rotary evaporate to dryness at 60°C. Transfer to a 5.0mL volumetric flask with 70% methanol, and dilute to volume with the same solvent. Pass through a 0.22μm nylon filter membrane to obtain it.
[0047] 2.1.2 Chromatographic condit...
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