小决明挥发油的提取及其化学成分的GC-MS分析(英文)

The Extraction and GC-MS Analysis of the Volatile Oil Constituents from Cassia tora L.

分别采用超临界CO2萃取法和水蒸气法提取决明子中的挥发性成分,并用气相色谱、气质联用(GC-MS)测定和分析其化学组分。结果显示:超临界CO2萃取法得到的挥发油的主要成分分别是(Z,Z)-9,12-十八碳二烯酸(26.74%)、油酸(24.15%)、n-十六烷酸(13.99%)、大黄根酚(7.26%)、(E)-9-十八碳烯酸(4.52%)和硬脂酸(4.44%),挥发油中主要含有脂肪酸(75.88%)和蒽醌(7.26%),得率高于水蒸气法,其决明挥发油在保持较高的亚油酸和油酸含量同时含有更多其它成分,超临界CO2萃取法比水蒸气法更适于提取决明挥发油。

In this research, the volatile oil was recovered from seeds of Cassia tora L. by employing supercritical fluid extraction（SFE） using carbon dioxide and hydrodistillation methods and analyzed by capillary GC and GC-MS. The main components in volatile oil of the SFE were elucidated as （Z, Z）-9,12-octadecadienoic acid （26.74%）, oleic acid （24.15%）, n-hexadecanoic acid （13.99%）, chrysophanol （7.26%）, （E）-9-octadecenoic acid （4.52%）, and octadecanoic acid （4.44%）. This volatile oil was characterized by a high content of aliphatic acids （75.88%） and anthraquinones（7. 26%）. SFE was superior to the hydrodistillation method.