Institute of Physical Chemistry, Bulgarian Academy of Sciences, 1113, Sofia, Bulgaria; Institut für Biology und Biotechnologie der Pflanzen, Westfälische Wilhems-Universität Münster, Schlossgarten 3, Münster, 48149, Germany.
Carbohydr Polym. 2021 Aug 1;265:118072. doi: 10.1016/j.carbpol.2021.118072. Epub 2021 Apr 16.
The present study was focused on investigation of electrokinetic behaviour of lecithin-stabilized oil/water emulsions in the presence of chitosan oligosaccharides (COS). The oligosaccharides give unique opportunity for precisely characterization of the properties of chitosan as a function of the degree of acetylation (DA) and degree of polymerization (DP) of the polymer. For the study were chosen well characterized ultra pure COS molecules with completely acetylated monomers and mixture of COS molecules with acetylated and deacetylated monomers. The obtained results confirmed experimentally for the first time, the suggestion for the predominant contribution of hydrophobic (at high DA) and electrostatic (at low DA) interactions between chitosan monomers and the lecithin-covered droplet surface.
本研究专注于在壳寡糖（COS）存在下，对卵磷脂稳定的油/水乳液的电动行为进行研究。这些寡糖为准确表征壳聚糖的性质提供了独特的机会，其性质与聚合物的乙酰化度（DA）和聚合度（DP）有关。本研究选择了具有完全乙酰化单体的超纯 COS 分子和具有乙酰化和脱乙酰化单体的 COS 分子混合物。实验结果首次证实了壳聚糖单体与卵磷脂覆盖的液滴表面之间主要存在疏水（在高 DA 时）和静电（在低 DA 时）相互作用的假设。
