University of La Rochelle, Transfer Phenomena and Instantaneity in Agro-industry and Building-Pole Science and Technology, Avenue Michel Crepeau, 17042 La Rochelle cedex 01, France.
J Chromatogr A. 2010 Oct 29;1217(44):6807-15. doi: 10.1016/j.chroma.2010.08.050. Epub 2010 Oct 1.
Détente Instantanée contrôlée (DIC), French for Instant Controlled Pressure Drop, was performed on laboratory apparatus as well as on a pilot plant for proving its feasibility, and identifying the optimized processing conditions and recognizing the energy consumption and the quantity of water used for such an operation. GC-MS and SPME analysis of the extracts and residue material were carried out to assess the extracts and solid residues. The lavandin essential oils obtained by using the new DIC extraction process was studied, modeled and quantitatively and qualitatively compared to the conventional hydrodistillation method. The most important differences between the two essential oils were reflected in the yields, with 4.25 as against 2.3 g EO/100 g of raw matter, and in the extraction time, with 480 s as against some hours for respectively the DIC and the hydrodistillation operations. These differences have been previewed through the fundamental analysis. They can normally explain the great decreasing of energy consumption to be 662 kWh/t of raw material. The amount of water to be added was about 42 kg water/t of raw material.
瞬时减压提取（DIC），法语为Instantanée contrôlée pression chute，在实验室设备和中试工厂进行了实验，以证明其可行性，并确定优化的加工条件，同时确定这种操作的能耗和用水量。对提取物和残余物进行了 GC-MS 和 SPME 分析，以评估提取物和固体残余物。对采用新的 DIC 提取工艺获得的薰衣草精油进行了研究、建模和定量定性比较，与传统的水蒸馏法进行了比较。两种精油之间最重要的差异体现在产量上，新方法的精油产量为 4.25g/100g 原料，而传统水蒸馏法的精油产量为 2.3g/100g 原料；在提取时间上，新方法为 480 秒，而传统水蒸馏法需要几个小时。这些差异通过基础分析可以预见。它们通常可以解释为每处理 1 吨原料可节约 662kWh 的能源。所用水量约为每处理 1 吨原料 42kg 水。
