首页> 美国卫生研究院文献>Journal of Food Science and Technology >Optimization of supercritical fluid extraction of essential oils and fatty acids from flixweed (Descurainia Sophia L.) seed using response surface methodology and central composite design
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Optimization of supercritical fluid extraction of essential oils and fatty acids from flixweed (Descurainia Sophia L.) seed using response surface methodology and central composite design

机译:利用响应面法和中心复合设计优化超临界流体萃取从浮萍种子中的精油和脂肪酸

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摘要

Essential oils and fatty acids of Descurainia sophia L. seed were obtained by supercritical CO2 extraction and steam distillation methods. The effect of different parameters such as pressure, temperature, modifier volume, dynamic and static extraction timeon the extraction yield were optimized using a central composite design after a 2 n-1 fractional factorial design. The results showed that under the pressure of 355 bar, temperature of 65 °C, methanol volume of 150 μL, dynamic and static extraction times of 35 and 10 min, respectively, the major components were methyl linoleate (18.2 %), camphor (12.32 %), cis-thujone (11.3 %) and trans-caryophyllene (9.17 %). The results indicated that by using the proper conditions, the supercritical fluid extraction is more selective than the steam distillation method. Extraction yields based on supercritical fluid extraction varied in the range of 0.68 to 17.1 % (w/w), and the extraction yield based on the steam distillation was 0.25 % (v/w).
机译:通过超临界CO 2萃取和水蒸气蒸馏法获得重瓣梭菌种子的精油和脂肪酸。在2 n-1 分数阶乘设计之后,采用中央复合设计优化了压力,温度,改性剂体积,动态和静态萃取时间等不同参数对萃取收率的影响。结果表明,在355 bar的压力,65°C的温度,150μL的甲醇体积,动态和静态萃取时间分别为35和10分钟的条件下,主要成分为亚油酸甲酯(18.2%),樟脑(12.32) %),顺-thujone(11.3%)和反式石竹烯(9.17%)。结果表明,通过适当的条件,超临界流体萃取比蒸汽蒸馏法更具选择性。基于超临界流体萃取的萃取产率在0.68%至17.1%(w / w)的范围内变化,基于蒸汽蒸馏的萃取产率为0.25%(v / w)。

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