An ionic liquid-based homogenate-ultrasound-synergistic technique was proposed to simultaneously extract dihydroquercetin and arabinogalactan from Larix gmelinii stumps. The appropriate extraction solvent of [C₂mim]Br was screened from thirteen kinds of imidazolium-based ionic liquids. The optimal conditions for the proposed method obtained by response surface methodology were a [C₂mim]Br concentration of 0.87 mol/L, IL-HUSE time of 24 min, liquid/solid ratio of 14 mL/g, and ultrasound power of 240 W. Under these conditions, the satisfied extraction yields were 53.09 ± 2.24 mg/g for dihydroquercetin and 152.48 ± 5.78 mg/g for larch arabinogalactan. Validation studies suggested that the improved method was capable of extraction of dihydroquercetin and arabinogalactan from L. gmelinii stumps. High extraction yields of dihydroquercetin and arabinogalactan obtained from the recycled [C₂mim]Br indicated that the proposed method is a highly efficient technique. The present research indicates that the improved process shows promising prospects for application to the preparation of bioactive substances from plant materials.

提出了一种基于离子液体的匀浆-超声-协同技术同时提取落叶松残肢中的二氢槲皮素和阿拉伯半乳聚糖的技术。从13种咪唑基离子液体中筛选出合适的[C ₂ mim] Br萃取溶剂。通过响应面法获得的拟议方法的最佳条件为[C ₂mim] Br浓度为0.87 mol / L，IL-HUSE时间为24分钟，液/固比为14 mL / g，超声功率为240W。在这些条件下，满意的萃取产率为53.09±2.24 mg / g对于二氢槲皮素而言为152.48±5.78 mg / g，对于落叶松阿拉伯半乳聚糖而言为152.48±5.78 mg / g。验证研究表明，改进的方法能够从甘美乳杆菌残渣中提取二氢槲皮素和阿拉伯半乳聚糖。从回收的[C ₂ mim] Br中获得的二氢槲皮素和阿拉伯半乳聚糖的高提取率表明，该方法是一种高效的技术。目前的研究表明，改进的工艺显示了从植物材料中制备生物活性物质的广阔前景。