玫瑰浸膏及精油提取设备

玫瑰精油的提取方法有蒸馏法、冷吸法、亚临界萃取法等，蒸馏法因加工温度高，组分变性及轻组分损失，精油的气味会发生变化，不够纯正，冷吸法效率低、成本高，目前应用较少。

亚临界低温萃取技术可以提取玫瑰鲜花和干花中的精油成分，其低温萃取的特性，使挥发性精油成分损失小，热敏性成分基本不变性，生产规模达到每天30t鲜花。亚临界萃取得到的产品为淡黄色浸膏，经过脱蜡或分子蒸馏处理可进一步得到精油。

Subcritical Extraction for Rose Essential Oil

The extraction methods for rose essential oil include distillation, enfleurage (cold absorption), and subcritical extraction, among others.

Distillation: Due to its high processing temperature, distillation causes component denaturation and the loss of volatile compounds. This alters the oil's aroma, resulting in a product that lacks purity.

Enfleurage (Cold Absorption): This method suffers from low efficiency and high costs, making it less commonly used nowadays.

Subcritical Low-Temperature Extraction: This technology can extract essential oil components from both fresh and dried rose flowers. Its low-temperature extraction characteristic minimizes the loss of volatile oil constituents, and thermosensitive components largely retain their original state. The production scale reaches a daily processing capacity of 30 metric tons of fresh flowers. The product obtained through subcritical extraction is a pale yellow, wax-containing extract. This extract can be further processed via dewaxing or molecular distillation to yield the essential oil.