测量已加工好的饲料中DL—蛋氨酸含量的方法如下: 根据预期的DL—蛋氨酸含量,精确称取1～2克研细的样品放入250ml烧杯内,加入30ml、0.1N盐酸后,将该悬浮液在室下搅拌15分钟。然后,用折叠滤纸过滤器或压滤器将该悬浮液过滤于一个园底烧瓶内,滤渣用蒸馏 The method of measuring the DL-methionine content of the processed feed is as follows: According to the expected DL-methionine content, accurately weighed 1 to 2 grams of the finely ground sample into a 250 ml beaker, add 30 ml of 0.1N hydrochloric acid, The suspension is stirred for 15 minutes at room temperature. The suspension is then filtered through a folded filter paper filter or pressure filter in a round bottom flask and the residue is distilled