Laboratory of experimental Biology and Pharmacology, University of Medea, Nouveau pole urbain, Medea University, 26000 Medea, Algeria; Faculty of Sciences, University of Medea, Nouveau pole urbain, Medea University, 26000 Medea, Algeria.
Faculty of Sciences, University of Medea, Nouveau pole urbain, Medea University, 26000 Medea, Algeria; Materials and Environmental Laboratory (LME), University of Medea, Nouveau pole urbain, Medea University, 26000 Medea, Algeria.
Carbohydr Polym. 2022 Jun 15;286:119310. doi: 10.1016/j.carbpol.2022.119310. Epub 2022 Mar 3.
This research reported on the synthesis and the evaluation of new octenyl succinate (OS) kappa-carrageenan (KC) esterified derivatives (KC-OS). Two derivatives were synthesized using microwave (KC-OSMM) and conventional heating (KC-OSCM). The FT-IR and H NMR demonstrated the KC-OS esters formation with a higher degree of substitution for KC-OSMM (0.85) than KC-OSCM (0.62). The SEM testing showed the non-deteriorated morphology of KC after modification. The amphiphilic properties and surface activity of KC-OSs investigated by the conductivity method confirmed the formation of self-assembled aggregates beyond a critical aggregation concentration of 0.08% for KC-OSMM and 0.12% for KC-OSCM. Stable oil-in-water emulsions were formulated based on KC-OSs at the concentrations of 0.75% and 1%. Lower globule sizes were observed for KC-OSMM emulsions at 0.75% (12.30 μm) and 1% (08.86 μm), compared to KC-OSCM at 0.75% (32.75 μm) and 1% (19.6 μm). All results demonstrated that microwave synthesis resulted in obtaining novel derivatives with superior properties.
本研究报告了新型辛烯基琥珀酸（OS）角叉菜胶（KC）酯化衍生物（KC-OS）的合成与评价。使用微波（KC-OSMM）和常规加热（KC-OSCM）合成了两种衍生物。FT-IR 和 H NMR 表明 KC-OS 酯的形成具有更高的取代度，KC-OSMM（0.85）高于 KC-OSCM（0.62）。SEM 测试表明 KC 在修饰后形态没有恶化。通过电导率法研究了 KC-OS 的两亲性质和表面活性，证实了自组装聚集体的形成，超过 0.08% KC-OSMM 和 0.12% KC-OSCM 的临界聚集浓度。基于 KC-OS 以 0.75% 和 1%的浓度配制了稳定的油包水乳液。在 0.75%（12.30 μm）和 1%（08.86 μm）时，KC-OSMM 乳液的液滴尺寸较小，而在 0.75%（32.75 μm）和 1%（19.6 μm）时，KC-OSCM 乳液的液滴尺寸较大。所有结果表明，微波合成得到了具有优异性能的新型衍生物。
