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首页> 外文期刊>Separation and Purification Technology >Separation of bioactives from seabuckthorn seeds by supercritical carbon dioxide extraction methodology through solubility parameter approach
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Separation of bioactives from seabuckthorn seeds by supercritical carbon dioxide extraction methodology through solubility parameter approach

机译：溶解度参数法超临界二氧化碳萃取法从沙棘种子中分离生物活性物质

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摘要

Seabuckthorn {Hippophae rhamnoids L.) seed oil having high nutraceutical, cosmeceutical and therapeutic activity has been extracted from dried seabuckthorn (SBT) seed powder using supercritical carbon dioxide (SC-CO2). The solubility parameter of SBT actives (tocopherols, lycopene and p-carotene), CO2, and entrainer solvents was calculated and validated with experimental results. The free radical scavenging activity of the extract was evaluated in terms of DPPH' assay. Theoretically, pressure and temperature had significant effect on extraction of SBT actives. A maximum recovery of 77.2% tocopherol, 75.5% carotene and an EC_(50) of 49.9 mg/mL (from DPPH· assay) was obtained after SC-CO2 extraction at 35 °C, 400 bar and run time of 60 min. Further optimization of the extraction conditions by Box-Behnken design increased the extraction efficiency. Use of 2-propanol as an entrainer at 30% v/w of dried SBT seed powder at optimized conditions showed a recovery of tocopherols and carotenes of 91.1% and 69.6%, respectively, while it showed EC_(50) of 38.9 mg/mL. The optimized conditions were a temperature of 35 °C, pressure of 305 bar and run time of 90 min.
机译：已经使用超临界二氧化碳（SC-CO2）从干燥的沙棘（SBT）种子粉末中提取了具有高营养，药妆和治疗活性的沙棘（Hippophae rhamnoids L.）种子油。计算并验证了SBT活性物质（生育酚，番茄红素和对-胡萝卜素），CO2和夹带剂溶剂的溶解度参数，并用实验结果进行了验证。提取物的自由基清除活性通过DPPH'测定法评估。从理论上讲，压力和温度对SBT活性物质的提取有重要影响。在35°C，400 bar和60分钟的运行时间下进行SC-CO2萃取后，最大回收率达到77.2％生育酚，75.5％胡萝卜素和49.9 mg / mL的EC_（50）（来自DPPH·测定）。通过Box-Behnken设计进一步优化提取条件，提高了提取效率。在最佳条件下，以干燥的SBT种子粉末的30％v / w使用2-丙醇作为夹带剂，生育酚和胡萝卜素的回收率分别为91.1％和69.6％，而EC_（50）值为38.9 mg / mL 。优化的条件是温度为35°C，压力为305 bar，运行时间为90分钟。

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