广西野生茸毛黎豆为豆科Stizol obium deeringianum(Small)Bort.的种子,民间认为有微毒,经用含0.15%醋酸和0.1%亚硫酸钠的40%醇溶液于室温浸泡3次,滤液减压浓缩后析出沉淀物。沉淀物用4倍量1N盐酸液溶解后,再加入0.1%活性炭和0.1%维生素C,搅拌后过滤。滤液用2N氢氧化铵液调 The wild velvet Mutton in Guangxi is the seed of the Leguminosae Stizol obium deeringianum (Small) Bort. It is considered to be slightly toxic by people. It is soaked in a 40% alcohol solution containing 0.15% acetic acid and 0.1% sodium sulfite at room temperature three times, and the filtrate is concentrated under reduced pressure. After precipitation precipitated. The precipitate was dissolved with 4 times amount of 1N hydrochloric acid solution, then 0.1% activated carbon and 0.1% vitamin C were added, and the mixture was stirred and filtered. The filtrate was adjusted with 2N ammonium hydroxide solution