Synthesis of new polyethoxylated tertiary amines and their use as Switchable Hydrophilicity Solvents
作者:Chiara Samorì、Laura Pezzolesi、Diego López Barreiro、Paola Galletti、Andrea Pasteris、Emilio Tagliavini
DOI:10.1039/c3ra47144f
日期:——
New polyethoxylated tertiary amines were synthesised and applied as Switchable Hydrophilicity Solvents (SHS) in the extraction and recovery of lipids from algal cultures, bypassing harvesting and de-watering steps. The eco-toxicological profile of the new amines was explored by evaluating their potential in inhibiting algal growth, and deepened by measuring the acute toxicity towards the crustacean Daphnia magna and the ready biodegradability in water. Among the synthesised amines, the one bearing two ethoxy units, named amine 2, showed the best combination in terms of lipids' extractive performances and toxicity; therefore it could be considered as a good alternative to N,N-dimethylcyclohexylamine (DMCHA), at the moment the most studied and effective SHS.
研究人员合成了新型聚乙氧基化叔胺,并将其作为可转换亲水性溶剂(SHS)用于从藻类培养物中提取和回收脂质,从而绕过了收获和脱水步骤。通过评估新胺抑制藻类生长的潜力,并通过测量其对甲壳动物大型蚤的急性毒性和在水中的可生物降解性,探索了新胺的生态毒理学特征。在合成的胺类中,含有两个乙氧基单元的胺类(名为胺 2)在脂质萃取性能和毒性方面表现出最佳组合;因此,它可被视为 N,N-二甲基环己胺(DMCHA)的良好替代品,而 N,N-二甲基环己胺是目前研究最多、最有效的 SHS。