Limonene needed in recycling foamed polystyrene was extracted from the ear of schizonepeta tenuifolia using ligroin.

本文研究从荆芥穗提取回收聚苯乙所需的柠,其方法是溶剂萃取。

Moreover, those impurities, as menthone, isomenthone, limonene, 1, 8-cineol and bata-pinene contents of Hai-Xuan mint are lower than that of 73-8mint.

原荷酮、异荷酮、柠、1,8-叶素、β-蒎等均低于“73～8”。

The oils were analyzed by GC-MS and percentages were obtained by normalized peak areas, where main components are nootkatone, D-limonene, osthole, cis-linaloloxide, furfural, and trans.

用气相色谱-质谱(GC-MS)联用技术分析,鉴定出主要成分为圆柚酮、D-柠、王草素、顺式-芳樟醇氧化物、糠醛、反式-芳樟醇氧化物。