Bučko Sandra, Spasojević Ljiljana, Milinković Budinčić Jelena, Fraj Jadranka, Petrović Lidija, Katona Jaroslav, Aidarova Saule, Mussabekov Kuanyshbek, Babayev Alpamys, Sarsembekova Raziya, Sharipova Altynay
Faculty of Technology Novi Sad, University of Novi Sad, Bul. cara Lazara 1, 21000 Novi Sad, Serbia.
Petroleum Engineering Institute "One Belt, One Road", Kazakh-British Technical University, Tole bi str. 59, Almaty 050000, Kazakhstan.
Polymers (Basel). 2025 Aug 29;17(17):2348. doi: 10.3390/polym17172348.
Cutin is a natural plant polyester, a constituent of the cuticle that covers aerial plant surfaces. Following the trends of agricultural and food waste reduction and the growing demand for plant-derived nanomaterials, cutin was extracted from tomato peels, a by-product of tomato processing. Subsequently, dispersions of cutin particles in the nano- and colloidal size range were prepared by pH-dependent precipitation. Four types of the dispersions were obtained, i.e., dispersion from cutin extract-NP E dispersion, dispersions from a solution of different cutin isolates, dialyzed cutin isolate-NP D dispersion, washed cutin isolate-NP W dispersion, and standard cutin isolate-NP S dispersion. Cutin precipitation occurred at lower than 7 and cutin dispersions with final 3-7 were formed. Zeta potential, particle size, and recovery of four cutin dispersions were investigated. All types of cutin particles bear a negative charge which increases on increase from 3 to 7, resulting in decrease in cutin nanoparticle size upon increase. In addition to that, the influence of cutin solution concentration and storage time on cutin dispersion particle size was found to be mitigated at ≥ 6. Among four dispersions, NP S had the highest cutin nanoparticle recovery at all s investigated.
角质是一种天然的植物聚酯，是覆盖植物地上部分表面的角质层的组成成分。随着农业和食品废弃物减少的趋势以及对植物源纳米材料需求的不断增长，角质是从番茄加工的副产品番茄皮中提取的。随后，通过pH依赖性沉淀法制备了纳米和胶体尺寸范围内的角质颗粒分散体。获得了四种类型的分散体，即来自角质提取物的分散体-NP E分散体、来自不同角质分离物溶液的分散体、透析角质分离物-NP D分散体、洗涤角质分离物-NP W分散体和标准角质分离物-NP S分散体。角质沉淀发生在低于7的pH值时，并形成最终pH值为3-7的角质分散体。研究了四种角质分散体的zeta电位、粒径和回收率。所有类型的角质颗粒都带负电荷，随着pH值从3增加到7，负电荷增加，导致角质纳米颗粒尺寸随着pH值的增加而减小。此外，发现在pH≥6时，角质溶液浓度和储存时间对角质分散体粒径的影响会减轻。在所有研究的pH值下，四种分散体中NP S的角质纳米颗粒回收率最高。
