Optimization of Supercritical extraction process for Perilla essential Oil
首发时间:2019-07-05
Abstract:The essential oil of perilla was extracted by supercritical carbon dioxide extraction with perilla as raw material. On the basis of single factor experiment, the optimum conditions for extracting perilla essential oil were obtained.The optimum process parameters are as follows:The perilla seeds were crushed to 50m 100 mesh; supercritical extraction temperature: 45~55℃;extraction pressure: 305Mpa.Extractive time: 4h;refined separation pressureI: 89Mpa.separation pressureII: 5~6.5Mpa. First-order molecular distillation dehydration,deodorization: distilled I temperature: 60~90C, distillation I vacuum: 500~5000Pa, Flow rate: 200~400g/h,scraper speed: 250~350r/min;second order molecular distillation deacidification: distillation II temperature: 150~170℃, distillation II vacuum degree: 5~20 Pa, built-in condensation temperature: 30~60℃, flow rate: 200~400 g/h, scraper speed: 250~350 r/min; freezing dewaxing: freezing temperature: -5~0℃, freezing time: 16~12h. Extraction rate > 39%.
keywords: Perilla Supercritical carbon dioxide Extraction
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紫苏精油超临界萃取工艺的优化
摘要:以紫苏为原料,以超临界二氧化碳萃取法提取紫苏精油。在单因素试验的基础上,得到了紫苏精油的最佳提取条件。最佳工艺参数为:紫苏籽粉碎至50m×100目;超临界萃取温度:45~55℃;萃取压力:305Mpa。萃取时间:4h;精制分离压力I:89Mpa。分离压力II:5~6.5Mpa。一级分子蒸馏脱水,除臭:蒸馏I温度:60~90℃,蒸馏I真空度:500~5000Pa,流速:200~400g / h,刮板速度:250~350r / min;二级分子蒸馏脱酸:蒸馏Ⅱ,温度:150~170℃,蒸馏Ⅱ真空度:5~20 Pa,内置冷凝温度:30~60℃,流速:200~400 g / h,刮板速度:250~350 r / min;冷冻脱蜡:冷冻温度:-5~0℃,冷冻时间:16~12h。提取率> 39%。
关键词: 紫苏; 超临界二氧化碳; 萃取
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