利用乙醇作为共溶剂的 CO₂ 超临界流体萃取技术从红色相微藻中提取虾青素和叶黄素。
Extraction of Astaxanthin and Lutein from Microalga in the Red Phase Using CO₂ Supercritical Fluid Extraction Technology with Ethanol as Co-Solvent.
机构信息
ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development. Department of Sustainability-CR Portici. P. Enrico Fermi, 1, 80055 Portici (NA), Italy.
Department of Engineering, University of Campania "Luigi Vanvitelli", Real Casa dell'Annunziata, Via Roma 29, 81031 Aversa (CE), Italy.
出版信息
Mar Drugs. 2018 Nov 3;16(11):432. doi: 10.3390/md16110432.
Astaxanthin and lutein, antioxidants used in nutraceutics and cosmetics, can be extracted from several microalgal species. In this work, investigations on astaxanthin and lutein extraction from () in the red phase were carried out by means of the supercritical fluid extraction (SFE) technique, in which CO₂ supercritical fluid was used as the extracting solvent with ethanol as the co-solvent. The experimental activity was performed using a bench-scale reactor in semi-batch configuration with varying extraction times (20, 40, 60, and 80 min), temperatures (50, 65, and 80 °C) and pressures (100, 400, and 550 bar). Moreover, the performance of CO₂ SFE with ethanol was compared to that without ethanol. The results show that the highest astaxanthin and lutein recoveries were found at 65 °C and 550 bar, with 18.5 mg/g dry weight (92%) astaxanthin and 7.15 mg/g dry weight (93%) lutein. The highest astaxanthin purity and the highest lutein purity were found at 80 °C and 400 bar, and at 65 °C and 550 bar, respectively.
虾青素和叶黄素是营养保健品和化妆品中使用的抗氧化剂，可以从几种微藻物种中提取。在这项工作中，通过超临界流体萃取（SFE）技术对（）在红色相中虾青素和叶黄素的提取进行了研究，其中 CO₂ 超临界流体用作提取溶剂，乙醇用作共溶剂。实验活性在半分批配置的台式反应器中进行，提取时间（20、40、60 和 80 分钟）、温度（50、65 和 80°C）和压力（100、400 和 550 巴）有所不同。此外，还比较了 CO₂ SFE 加乙醇和不加乙醇的性能。结果表明，在 65°C 和 550 巴下，虾青素和叶黄素的最高回收率分别为 18.5mg/g 干重（92%）和 7.15mg/g 干重（93%）。在 80°C 和 400 巴下，虾青素的最高纯度和在 65°C 和 550 巴下，叶黄素的最高纯度。
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