辣椒红色素的超临界萃取

为了制备高质量的辣椒红色素,用正交实验设计对有机溶剂浸提辣椒油树脂及超临界CO2流体技术提纯辣椒红色素的工艺条件进行优化筛选。结果表明,制备辣椒油树脂的最佳工艺条件为：丙酮作有机溶剂,辣椒粉末细度为40目,固液比为1∶6,浸提时间40min;辣椒油树脂提纯辣椒红色素的超临界萃取条件为：萃取釜温度35℃,萃取压力30MPa,时间2.0h。有机溶剂浸提和超临界萃取结合使用可有效地提高辣椒红色素的色价与质量。

Extraction of Capsicum Red Pigment with Supercritical CO2 Fluid

In order to produce high quality of capsicum red pigment, the experimental orthogonal designs were used to select the optimum conditions of organic solvent extraction capsicum oleoresin and supercritical CO2 extraction technique to purify capsicum red pigment. The result indicated that, the optimum parameters of organic solvent extraction pepper oil are acetone to organic solvent, chili powder fineness of 40 meshes, solid-liquid ratio of 1：6, the extraction time is 40 min. Moreover, supercritical CO2 technique was extraction temperature 35 ℃, extraction pressure 30 MPa and extraction time 2.0 h. The combined using of organic solvent extraction and supercritical fluid extraction effectively raised the color price and quality of capsicum red pigment.