Method and application for rapidly detecting mother chrysanthemum medicinal materials by utilizing near infrared spectroscopy
A near-infrared spectroscopy and near-infrared spectroscopy technology, which is applied in the direction of material analysis, measuring devices, and analysis materials through optical means, can solve the problems of single, time-consuming, and labor-intensive quality indicators of medicinal materials, and achieve simple operation and accuracy High quality and safe effect
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Embodiment 1
[0044] Example 1 Determination of the content of chrysanthemum glucoside in the wild chrysanthemum medicinal material by near-infrared spectrometry
[0045] The present embodiment Menghuaside assay comprises the following steps:
[0046] (1) Select 45 batches of wild chrysanthemum medicinal materials whose content of chrysanthemum glycosides is known, and pass through an 80-mesh sieve after crushing to obtain said wild chrysanthemum medicinal material powder.
[0047] Take about 0.25g of wild chrysanthemum medicinal material powder, add 50mL of 70% methanol into a stoppered Erlenmeyer flask, ultrasonicate for 1.5h, cool to room temperature, and extract for later use.
[0048] The extract sample was filtered with a 0.45 μm filter membrane and injected into HPLC for analysis. The chromatographic conditions are: the mobile phase is 0.5% phosphoric acid aqueous solution and acetonitrile (V / V 70:30), the chromatographic column is Agilent Zorbax SB-C18 (4.6*250mm, 5μm), the column ...
Embodiment 2
[0073] Example 2 Determination of the moisture content of the wild chrysanthemum medicinal material by near-infrared spectroscopy
[0074] The present embodiment moisture content determination comprises the following steps:
[0075] (1) Select 45 batches of wild chrysanthemum medicinal materials whose content of chrysanthemum glycosides is known, and pass through an 80-mesh sieve after crushing to obtain said wild chrysanthemum medicinal material powder.
[0076] Adopt drying method to measure the moisture content in described wild chrysanthemum medicinal material as standard content. Take 2-5g of wild chrysanthemum medicinal material powder and place it in a weighing bottle dried to constant weight, dry at 105°C for 6h, move to a desiccator to cool for 30min, accurately weigh, then dry at the above temperature for one hour, cool down, and weigh Weight, until the difference between two consecutive times does not exceed 5mg, calculate the moisture content.
[0077] (2) Carry ...
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