Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, Anillo Envolvente del Pronaf y Estocolmo s/n, Cd. Juárez rez, Chihuahua, CP 32310, México.
Departamento de Posgrado, Tecnológico Nacional de México/I.T. Mérida, Av. Tecnológico Km. 4.5 S/N, Mérida, Yucatán, 97118, México.
Carbohydr Polym. 2020 Dec 15;250:116972. doi: 10.1016/j.carbpol.2020.116972. Epub 2020 Aug 20.
In this study, succinylated nanoparticles from normal (NPS-N), high-amylose (NPS-H), and high-amylopectin corn starch (NPS-W) were synthesized, characterized, and studied for the nanoencapsulation of the Ardisia compressa anthocyanins. The nanoparticle‒anthocyanin interaction was also investigated. The succinylated starch nanoparticles (S-SNPs) had hydrodynamic sizes of 65-390 nm, degrees of substitution (DS) of 0.014-0.032, ζ-potential values of up to -34 mV and a nanocolloid behavior. NPS-N and NPS-W showed the highest (p < 0.05) encapsulation efficiencies (EE) (52 and 49 %, respectively) compared than NPS-H (45 %). Thereby, the lowest DS obtained, and the branched amylopectin structure favored the EE. The nanoparticle-anthocyanin interaction occurred through hydrophobic and electrostatic interactions and influenced significantly (p < 0.05) the hydrodynamic size and surface properties of the resulting nanocapsules. The relative crystallinity (RC) decreased significantly (p < 0.05) in the S-SNPs, but the nanocapsules mostly experimented a structural recrystallization and showed melting temperatures>150 °C.
在这项研究中，合成了来源于普通（NPS-N）、高直链淀粉（NPS-H）和高支链淀粉玉米淀粉（NPS-W）的琥珀酰化纳米颗粒，并对其进行了表征，研究了其对紫金牛花色苷的纳米封装。还研究了纳米颗粒-花色苷的相互作用。琥珀酰化淀粉纳米颗粒（S-SNPs）的水动力粒径为 65-390nm，取代度（DS）为 0.014-0.032，ζ-电位值高达-34mV，表现出纳米胶体行为。与 NPS-H（45%）相比，NPS-N 和 NPS-W 表现出最高的（p<0.05）包封效率（EE）（分别为 52%和 49%）。因此，获得的最低 DS 和支链的支链淀粉结构有利于 EE。纳米颗粒-花色苷的相互作用是通过疏水相互作用和静电相互作用发生的，这显著影响了所得纳米胶囊的水动力粒径和表面性质（p<0.05）。相对结晶度（RC）在 S-SNPs 中显著降低（p<0.05），但纳米胶囊大多经历了结构重结晶，并表现出>150°C 的熔融温度。
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