The conditions for the extraction of flavone by ethanol method from toona sinensis roem old leaves were studied. The results showed that under the room temperature, when extraction time was 1.0 h , ratio of feed and liquid was 1∶20 g/mL, 25 g flavone was extracted from toona sinensis roem old leaves, and the high yield was 12.4 %. The structure of product was characteried by one-dimensional infrared spectroscopy and second-derivative infrared spectroscopy and the main chemical compositions are flavone and little polysaccharides.
赵 雷，张美娟，田 野，韩之峰，戚德丰，李朋欣，田 盼，于宏伟. 香椿老叶中黄酮的提取工艺研究[J]. 煤炭与化工, 2016, 39(8): 60-62，67.
Zhao Lei, Zhang Meijuan, Tian Ye, Han Zhifeng, Qi Defeng, Li Pengxin, Tian Pan, Yu Hongwei. Study on extraction process of flavone from toona sinensis roem old leaves. CCI, 2016, 39(8): 60-62，67.
