ASE method for extracting isoferulic acid in Rhizoma Cimicifugae
An isoferulic acid and extraction technology, which is applied in the field of laboratory testing, can solve the problems of high requirements for operators' operating skills and complex pharmacopoeia operation process, and achieves the effects of good repeatability, short extraction time and simple operation.
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[0023] Crush Cimicifuga through a pulverizer and pass through No. 3 sieve, about 0.5g, accurately weighed, mix evenly with 1g of quartz sand, set aside, and transfer to a pre-placed glass fiber filter. Add an appropriate amount of quartz sand to the 10ml extraction pool, shake gently to make it on the same level as the pool mouth, and tighten the upper cover of the extraction pool. After the extraction, the extract was transferred to a 50ml volumetric flask, diluted to the mark with 20% methanol, centrifuged at 15000r / min for 3min, and the supernatant was taken for LC determination.
[0024] The extraction conditions (see table 1) are:
[0025] Table 1
[0026]
best practice
Extraction cell volume (ml)
10
extraction solvent
40% Methanol
pressure (psi)
1500
temperature(℃)
120
Static extraction time (min)
5
Static cycle times
4
Flushing volume (%)
60
Purge time (s)
90
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