中国农业科学 ›› 2005, Vol. 38 ›› Issue (01): 140-144 .

• 园艺 • 上一篇    下一篇

超临界二氧化碳二次梯度结晶穿心莲内酯的研究

张文成,潘见   

  1. 农产品生物化工教育部重点实验室
  • 收稿日期:2003-12-02 修回日期:2004-03-24 出版日期:2005-01-10 发布日期:2005-01-10
  • 通讯作者: 张文成

Study on Purifying Technology of Andrographolide by Supercritical Carbon Dioxide Secondary Gradient Crystallization

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  1. 农产品生物化工教育部重点实验室
  • Received:2003-12-02 Revised:2004-03-24 Online:2005-01-10 Published:2005-01-10

摘要: 探讨超临界CO2二次梯度结晶压力、温度、时间对穿心莲内酯纯度、结晶率的影响,并借助扫描电镜进行晶体形貌考察,利用高效液相色谱进行纯度检测。结果表明,超临界CO2二次梯度结晶穿心莲内酯的适宜工艺参数为压力14 MPa、温度55℃、时间60 min、CO2流量15 L·min-1,该工艺条件下得到的穿心莲内酯晶体形貌更加细小,在结晶板上呈絮状分布,纯度>90%,最高达92.5%,结晶率为48.9%。

关键词: 超临界二氧化碳, 二次梯度结晶, 穿心莲内酯, 扫描电镜, 高效液相色谱

Abstract: The effect of secondary gradient crystallizing pressure, temperature and time on the purity and the crystallization ratio of andrographolide was investigated via single factor experiments. The shape of crystal was observed with scanning electron microscopy (SEM). The purity of andrographolide was determined by high pressure liquid chromatography (HPLC). The result showed that the optimum parameters were pressure 14 MPa, temperature 55℃, time 60 min, and under these conditions the particle of andrographolide was much smaller, the crystal of andrographolide was distributed in floccule on crystal board, the purity of andrographolide was 92.5%, the crystallization ratio was 48.9%.

Key words: Supercritical carbon dioxide, Secondary gradient crystallization, Andrographolide, Scanning electron microscopy(SEM), High pressure liquid chromatography(HPLC)