Effective ultrasonic-assisted extraction and solubilization of curcuminoids from turmeric by using natural deep eutectic solvents and imidazolium-based ionic liquids was written by Shekaari, Hemayat;Zafarani-Moattar, Mohammed Taghi;Mokhtarpour, Masumeh. And the article was included in Journal of Molecular Liquids in 2022.SDS of cas: 33171-05-0 The following contents are mentioned in the article:
Curcuminoids (CURs), bioactive and antioxidant polyphenols, are major components of turmeric. Com. available component in CURs are curcumin (C) as the main constituent and the other two demethoxycurcumin (DMC) and bisdemethoxycurcumin (BDMC) as minor components. Extraction and anal. of these components from turmeric may pose specific challenges and yield different results. The organic solvents applied in traditional solvent extraction systems are not eco-friendly owing to their properties such as flammability, toxicity and volatility. For this reason, in this research work, ten deep eutectic solvents (DESs) and three ionic liquids (ILs) were selected to investigate the extraction of CURs from turmeric. Further, DES and ILs-based extraction was performed under ultrasound. Under extraction conditions, the CURs in the turmeric powder was measured by the use of high performance liquid chromatog. (HPLC). The maximum CURs amount of 164.51 mg/g was attained using effective ultrasound-assisted extraction in 50% water content DES or IL at 5% solid loading with 50.8 W/cm2 power intensity at 363 K in 60 min. This improved extraction method can be economical, green and effective alternative to conventional solvent extraction for CURs. On the other hand, the solubility of standard CUR was obtained at 298.15 K using saturation shake flask method. Finally, Hansen solubility parameters (HSP) were applied to identify solvents which were compatible with CURs. All the results were consistent with each other, supporting the validity of our extraction method. This study involved multiple reactions and reactants, such as Bisdemethoxycurcumin (cas: 33171-05-0SDS of cas: 33171-05-0).
Bisdemethoxycurcumin (cas: 33171-05-0) belongs to ethers. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.SDS of cas: 33171-05-0
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem