Abstract

Lipophilic constituents of sea buckthorn leafy shoots, which is a large-scale waste product of sea buckthorn oil production and rejuvenating pruning of cultivated sea buckthorn plants, is investigated. Methyl tert-butyl ether (MTBE) is used as an extraction solvent. It features all the advantages of diethyl ether while lacking its disadvantages: it is not prone to peroxide formation and is not a significant air pollutant due to its higher boiling point. The chemical composition of MTBE extract of sea buckthorn leafy shoots is studied by gas chromatography mass spectrometry and high-performance liquid chromatography. Seventy-four neutral and 38 acidic components, including polyprenols, dolichols, triterpene alcohols and acids, and sterols are identified. In comparison to hexane, MTBE, as an extraction solvent, provides higher yields of bioactive triterpene acids and diols, including uvaol, eritrodiol, and betulin. The presence of these compounds in the prepared extract may enhance its beneficial properties.

中文翻译：

---

沙棘绿色废物甲基叔丁基醚提取物的生物活性成分。

摘要

研究沙棘叶类枝条的亲脂性成分，沙棘叶类枝条是沙棘油生产和栽培沙棘植物再生修整的大规模废品。甲基叔丁基醚（MTBE）用作萃取溶剂。它具有乙醚的所有优点，但没有缺点：它不易形成过氧化物，并且由于其较高的沸点而不会成为重要的空气污染物。通过气相色谱质谱法和高效液相色谱法研究了沙棘叶梢MTBE提取物的化学成分。鉴定出74种中性和38种酸性成分，包括聚戊二烯醇，三元醇，三萜醇和酸以及固醇。与己烷相比，MTBE作为萃取溶剂，可提供更高的生物活性三萜酸和二醇（包括丁香酚，铜，和白桦林）的产率。这些化合物在制备的提取物中的存在可以增强其有益性能。