采用气相色谱-质谱联用法(GC/MS)快速分析可可脂(CB)及代可可脂(CBS)的脂肪酸组成,找出两者组分的显著不同,以此作为鉴别可可脂与代可可脂的依据。结果显示:代可可脂(CBS)中月桂酸占脂肪酸总量的49.083%。可可脂(CB)中主要脂肪酸为硬脂酸,占脂肪酸总量的34.488%;油酸,占31.919%;可可脂中无月桂酸成分。月桂酸的检出与否可作为判断代可可脂(CBS)是否存在的定性依据。

Through the quick analysis of the composition of fatty acids in CB and CBS,we found the remarkable differences in composition between CB and CBS.These results are used as evidence to differentiate the CB and CBS.The results indicate that: In CBS,the dodecanoic acid makes up 49.083% of total fatty acid,While in CB,the major fatty acid is octadecanoic acid,which makes up 34.488% of the total fatty acid;and oleic acid was 31.919%.No dodecanoic acid was found in CB.The detection of weather dodecanoic acid was exit can be used as the evidence of CBS.