Pressurized Hot Water Extraction of Anthraquinones from the Roots of Morinda citrifolia
Pressurized Hot Water Extraction of Anthraquinones from the Roots of Morinda citrifolia
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DOI：
10.1021/bp049779x
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发表时间：
2004
影响因子：
2.9
通讯作者：
A. Shotipruk;Jirapat Kiatsongserm;P. Pavasant;M. Goto;M. Sasaki
中科院分区：
文献类型：
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作者：
A. Shotipruk;Jirapat Kiatsongserm;P. Pavasant;M. Goto;M. Sasaki
本研究考察了从干燥的桑葚根中加压热水提取蒽醌的方法。测定了水温（110、170和220℃）和水流（2、4和6 mL min - 1）等不同操作条件对提取率和提取率的影响。220°C时提取率最高，约为43.6 mg g−1。在4 mL min - 1或更高的亚临界水萃取条件下，即使在170°C下，也能在提取后3小时内回收根部中存在的所有蒽醌类物质。在研究的温度范围内，压力对结果没有显著影响。6 mL min - 1的萃取率最高，但以单位体积水提取蒽醌的量衡量，萃取效率低于4 mL min - 1的萃取率。测定了蒽醌类化合物在高压热水中的溶解度。结果表明，萃取过程中存在传质限制。
This study examines pressurized hot water extraction of anthraquinones from dried roots of Morinda citrifolia (Noni). The effects of various operating conditions such as water temperature (110, 170, and 220 °C), and water flow rate (2, 4, and 6 mL min−1) on extraction yield and extraction rate were determined. At 220 °C, the extraction yield was the highest and was approximately 43.6 mg g−1. Subcritical water extraction at 4 mL min−1 or higher was found to be able to recover all the antraquinones present in the roots within 3 h of extraction, even at 170 °C. Pressure had no significant effect on the results for the range of temperatures studied. The flow rate of 6 mL min−1 resulted in the highest extraction rate, but the extraction efficiency, as measured by the amount of anthraquinones extracted per unit volume of water was lower than that of 4 mL min−1. Anthraquinones solubility in pressurized hot water was determined. The results indicate a presence of a mass transfer limitation in the extraction process from solid matrix.