塩化ベルベリンの再結晶条件の最適化及び高速液体クロマトグラフィーによる純度測定
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Berberine and palmatine are isoquinoline alkaloids contained in "oubaku", Phellodendri Cortex, and their structures are similar. The R_f values of TLC and the retention times (HPLC) of these compounds are dose. Their complete separation is difficult; a small quantity of palmatine chloride exists even in a commercial berberine chloride. Some crystals exist in the Student practice, from gel-type crystals (small needles) to big needles according to the volume of water. These phenomena suggest that a possibility exist to purify berberine chloride only by recrystallization. We recrystallized 3 times crude berberine (10 g, gained from the Student practice) from 140 ml of water per 1 g, and separated pure needles (neally 100%, 2.31 g) which were checked with HPLC.
- 社団法人日本分析化学会の論文
- 2005-01-05
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