超声波分级提取玫瑰精油和色素的工艺优化

Optimization of technology for ultrasound-assisted sequential extraction of rose essential oil and pigment

中文关键词:  超声波  玫瑰精油  玫瑰色素提取

英文关键词:ultrasound  rose essential oil  rose pigment extraction

中文摘要:

      目的 研究超声波技术分级提取玫瑰精油与色素的最佳工艺条件, 在提取玫瑰精油的同时, 增加色素的得率。方法 以平阴玫瑰花瓣为原料, 超声波辅助乙醇水溶液提取玫瑰中的精油与色素。通过pH示差法测定玫瑰色素的粗得率, 气相色谱法确定精油的相对含量。采用乙醚-石油醚混合液萃取玫瑰精油, 并使用大孔树脂纯化色素。结果 最佳工艺参数: 超声功率130 W, 超声时间20 min, 液料比4:30(g/mL), 乙醇浓度50%, 此时玫瑰精油得率为(0.22±0.02) mg/g, 粗提液中色素得率为(0.83±0.02) mg/g。经大孔树脂纯化后的色素得率为(0.74±0.02)mg/g。结论 利用超声技术实现了玫瑰花精油提取, 同时获得较高得率的色素。

英文摘要:

      Objective To optimize the fractionation extraction of rose essential oil and pigment from Pingyin rose by ultrasound technology, not only extracted rose essential oil but also increased the yield of pigment. Methods Pingyin rose petals was used as raw material, the rose essential oil and pigments were extracted by ultrasonic-assisted ethanol aqueous. The rough yield of rose pigment was measured by pH-differential method, and the gas chromatography was used to determine the relative content of essential oils. The ether-petroleum ether mixture was used to extract rose essential oil, and macroporous resin was used in the purification of pigment. Results The optimized best extraction parameters: ultrasonic-assisted extraction time 20 min, ultrasound power 130 W, liquid-solid ratio 4:30 (g/mL), ethanol concentration 50%, then the yield of rose essential oil (0.22±0.02) mg/g, and crude yield of pigment (0.83±0.02) mg/g. The purified yield of pigment (0.74±0.02) mg/g. Conclusion Rose essential oil are extracted using ultrasonic technology, and the high yield of the pigment are achieved.