Siew W L
Palm Oil Research Institute of Malaysia, Bandar Baru Bangi, Kajang, Selangor.
J AOAC Int. 1996 Jan-Feb;79(1):80-2.
A method for determining shell in palm kernel cake (PKC) is described. This simple and rapid method requires little pretreatment compared with the method currently used in PKC trade, in which the sample undergoes defatting, acid and alkali digestion, and washing, before a chloroform-alcohol solution is used to separate the shells. In the proposed method, only defatting the sample is required. The shells are separated by the density difference between the shell and PKC in a potassium iodide solution. Recoveries of at least 93% were obtained, and the correlation coefficient between the actual shell content and the determined shell content was 0.999, with gradients of 0.97 and 0.98 for fine and coarse shell, respectively.
本文描述了一种测定棕榈仁粕（PKC）中壳含量的方法。与PKC贸易中目前使用的方法相比，这种简单快速的方法几乎不需要预处理。在目前使用的方法中，样品在使用氯仿 - 酒精溶液分离壳之前，要经过脱脂、酸碱消化和洗涤。在所提出的方法中，只需要对样品进行脱脂。壳通过壳与PKC在碘化钾溶液中的密度差异来分离。回收率至少为93%，实际壳含量与测定壳含量之间的相关系数为0.999，细壳和粗壳的梯度分别为0.97和0.98。
