Wang, Tong; Guo, Qing; Li, Ping; Yang, Hua published the artcile< Deep-eutectic solvents/ionic liquids/water mixture as a novel type of green thermo-switchable solvent system for selective extraction and separation of natural products from Rosmarinus officinalis leaves>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is Rosmarinus leaf extraction separation natural product deep eutectic solvent; green thermo switchable solvent system; Carnosic acid; Deep-eutectic solvents; Green solvent; Ionic liquid; Rosmarinic acid; Ultrasonic-assisted extraction.
In the present study, we designed a novel type of green thermo-switchable solvent system which is composed of ChCl:LA/[BMIM]PF6/H2O (volume/volume/v, 1/2/1) to extract natural products. When the temperature is 60°C, the system is a homogeneous single-phase system, and when cooling to 25°C, the system is switched into a heterogeneous two-phase system. Based on the thermo-switchable system, an integrated extraction method was developed which could efficiently extract both rosmarinic acid (hydrophilic) and carnosic acid (hydrophobic) from Rosmarinus officinalis leaves at 60°C and in situ sep. the extracted compounds with high recovery yields by cooling the extracts to 25°C. Rosmarinic acid was separated into the upper phase (88.97%) and carnosic acid was separated into the lower phase (97.46%). In addition to enhanced efficiency and no consumption of organic solvents, the method also completed the extraction and separation in a single step which further reduced the operation units.
Food Chemistry published new progress about Deep eutectic solvents. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics