摘要
采用微波辐照从山苍子中提取柠檬醛 ,精油的得率较传统的直接水蒸气蒸馏法平均提高2 48%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 ,获得的山苍子精油柠檬醛质量分数为 6 8 6 4% ,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 ,而且操作较内标法和GB 1142 4— 89法更为方便。
By microwave irradiation, citral was obtained from Litsea cubeba fruits, the yield being in average 2.48% higher than that by traditional distillation in a current of steam. Gas chromatographic determination of the components of Litsea cubeba oil and citral was conducted in capillary column with temperature programming and FID by internal normalization. Experimental results showed that the content of citral in Litsea cubeba oil was 68.64%, the recovery was 101.3%, coefficient of variation was 0.28%, and linear correlation was 0.9997. This method is as accurate as that using acetophenone as the internal standard. This method is simpler, more accurate and has better reproducibility than GB 11424 - 89.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2001年第7期398-400,共3页
Fine Chemicals
基金
江西省科委重点科技计划资助项目 (0 5 14 )
