Dent R G
J Assoc Off Anal Chem. 1977 Jan;60(1):117-21.
An improved method has been developed for the extraction of light filth from 5 ground spices, ginger, white pepper, coriander, celery seed, and cardamom. The method, a modification of 44.120, utilizes a cold isopropanol defatting, followed by wet sieving and flotation of light filth from 40% isopropanol with HCl and mineral oil-heptane (85 + 15). Collaborative results show that the proposed method is more rapid to perform than the present official first action methods, 44.116 and 44.120, and yields better recoveries. The method has been adopted as official first action.
已开发出一种改进方法，用于从5种磨碎的香料（姜、白胡椒、香菜、芹菜籽和小豆蔻）中提取轻质杂质。该方法是对44.120的改进，采用冷异丙醇脱脂，然后进行湿筛，并从含盐酸和矿物油-庚烷（85 + 15）的40%异丙醇中浮选轻质杂质。协同结果表明，该方法比现行官方首次采用的方法44.116和44.120执行起来更快，回收率更高。该方法已被采用为官方首次采用的方法。
