%0 Journal Article %T Ultrasonic-Assisted Extraction of Procyanidins Using Ionic Liquid Solution from Larix gmelinii Bark %A Xiaowei Sun %A Zhimin Jin %A Lei Yang %A Jingwei Hao %J Journal of Chemistry %D 2013 %I Hindawi Publishing Corporation %R 10.1155/2013/541037 %U http://dx.doi.org/10.1155/2013/541037