超临界CO_2流体萃取南瓜籽油的质量研究

Study on Pumpkin Seed Oil Extraction by Supercritical CO_2 Fluid

以南瓜籽为试验材料,采用二氧化碳超临界流体萃取(SFE)技术从南瓜籽中提取南瓜籽油,进行得率和质量研究表明,SFE法较索氏萃取法提高了不饱和脂肪酸的含量。以得率为标准,SFE-CO2萃取的适宜条件为:时间为120min、压力为35MPa、温度为35℃、二氧化碳流量为2ml/min。

using the pumpkin seed as material, The pumpkin seed oil respectively was extracted by supercritical fluid extraction (SFE) technology and the soxhlet's extraction methods(SEM). The content of unsaturated fat acid was increa sed in CO2 SFE. As a reference of the yield of the pumpkin seed oil, the suitable extracting conditions of CO2 SFE of pumpkin seed oil were 35Mpa extracting pressure, 35℃ extracting temperature, 2ml/min carbon dioxide flow rate and 120min extracting time.