微波法从山苍子中提取柠檬醛及其测定研究(英文)

STUDY ON EXTRACTING CITRAL FROM LITSEA CUBEBA FRUITS BY MICROWAVE RADIATION AND DETERMINATION OF CITRAL

讨论了采用微波辐照从山苍子中提取制备柠檬醛 ,精油的得率较传统的直接水蒸气蒸馏法平均提高 2 .4 8%以上。用程序升温毛细管柱气相色谱归一化法测定山苍子精油中的柠檬醛 ,获得了山苍子精油中柠檬醛含量为 68.64 % ,回收率为 10 1.3 % ,相对标准偏差为 0 .2 8% ,线性相关系数为 0 .9997,准确性与内标法相一致的实验结果 ,而且操作较内标法和GB 1142 4 - 89法更为方便。

Citral is extracted from Litsea cubeba with microwave radiation.Content of essential oil extracted from L.cubeba fruit using microwave radiation is on an average 2.48% higher than that using traditional direct steam distillation.Adopting gas chromatography with temperature programming,citral content in the oil was determined to be 68.46%,at recovery 101.3%,relative standard deviation 0.28%, linear relative coefficient 0.9997,which are in good agreement with those measured by internal standard method,but the operation is simpler than both the internal standard and GB 11424-89 methods.