| 影响USFE萃取海藻EPA和DHA的因素分析 |
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| 引用本文： | 丘泰球,丁彩梅,胡爱军,闫杰.影响USFE萃取海藻EPA和DHA的因素分析[J].华南理工大学学报(自然科学版),2004,32(4):43-47. |
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| 作者姓名： | 丘泰球 丁彩梅 胡爱军 闫杰 |
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| 作者单位： | 华南理工大学,食品与生物工程学院,广东,广州,510640 |
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| 基金项目： | 广州市科技计划项目 (穗科条字 [2 0 0 2 ]2 7号 )~~ |
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| 摘 要： | 研究了萃取温度、压力、时间、CO2流量和超声参数对超声强化超临界流体萃取海藻EPA和DHA的影响，发现与超临界流体萃取相比，超声强化超临界流体萃取过程使CO2流量减小，萃取温度及压力降低，萃取时间缩短，而EPA和DHA的萃取率提高，在单因素实验的基础上进行了正交实验，结果表明，超声强化超临界流体萃取EPA和DHA的最佳工艺条件为：萃取温度35℃，压力25MPa，时间3．0h，CO2流量3L／h。
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| 关 键 词： | 超临界流体萃取 超声 强化 二十碳五烯 二十二碳六烯酸 海藻 |
Analyses of Factors Affecting the Ultrasonically-enhanced Supercritical Fluid Extraction of EPA and DHA from Algae |
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| Abstract.Analyses of Factors Affecting the Ultrasonically-enhanced Supercritical Fluid Extraction of EPA and DHA from Algae[J].Journal of South China University of Technology(Natural Science Edition),2004,32(4):43-47. |
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| Authors: | Abstract |
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| Abstract: | Factors affecting the ultrasonically-enhanced supercritical fluid extraction (USFE) of EPA and DHA from algae were studied, including the temperature, pressure and time of the extraction, CO2 flowrate and ultrasonic parameters. Compared with supercritical fluid extraction ( SFE), USFE makes CO2 flowrate and the temperature, pressure and time of the extraction decrease, while the extration yields of EPA and DHA increase. On the basis of single-factor experiments, an orthogonal experiment was carried out. The results indicate that the extraction undertaken at the extraction temperature of 35℃ and the pressure of 25 MPa for a extraction time of 3.0 h and with a CO2 flowrate of 3 L/h is the optimum technology approach to extract EPA and DHA by USFE. |
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| Keywords: | supercritical fluid extraction ultrasonic enhancement eicosapentaenoic acid docosahexaenoic acid algae |
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