Ethyl cellulose particles loaded with α-tocopherol for inhibiting thermal oxidation of soybean oil. (15th January 2021)

• Record Type: Journal Article
• Authors: Ma, Xin; Liu, Ying; Fan, Liuping; Yan, Weiqiang
• Is Part Of: Carbohydrate polymers. Volume 252(2021)
• Publication Date: 2021-01-15
• Subjects: EC M9 ethyl cellulose with viscosity of 9 cP -- EC M70 ethyl cellulose with viscosity of 70 cP -- EC M200 ethyl cellulose with viscosity of 200 cP -- TBHQ tert-butylhydroquinone -- ADIs acceptable daily intake -- PDI polydispersity index -- DLVO Derjaguin–Landau–Verwey–Overbeek theory -- EE encapsulation efficiency -- LC loading capacity -- CLSM confocal laser scanning microscope -- SEM scanning electron microscope -- DSC differential scanning calorimetry -- Tg glass transition temperature -- TGA thermogravimetric analysis -- XRD X-ray diffraction -- FTIR Fourier transformed infrared -- CAC Codex Alimentarius Commission -- TPC total polar compound -- CV carbonyl value; Frying oil -- Antioxidant -- Viscosity -- Nanoparticles -- Oxidative stability; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2020.117169
• Languages: English
• ISSNs: 0144-8617

Abstract

Graphical abstract: Highlights: Ethyl cellulose particles loaded with α-tocopherol were successfully fabricated. Particle size decreased with increased viscosity of ethyl cellulose. Ethyl cellulose significantly improved thermal stability of α-tocopherol. The obtained particles had good dispersibility in soybean oil. Loaded particles effectively inhibited thermal oxidation of soybean oil. Abstract: Most endogenous antioxidants degrade and lose efficiency during frying. The study aimed to inhibit thermal oxidation of soybean oil by fabricating α-tocopherol loaded particles with ethyl cellulose (EC) of different viscosity grades (M9, M70 and M200) via anti-solvent method. As the viscosity of ethyl cellulose increased, particle size decreased from micrometer to nanometer. Confocal laser scanning microscope confirmed successful encapsulation and uniform distribution of α-tocopherol in the loaded particles. Differential scanning calorimetry and thermogravimetric analysis demonstrated that loaded particles protected α-tocopherol from oxidation and degradation. Meanwhile, Fourier transformed infrared demonstrated that α-tocopherol interacted with EC through hydrogen bond and hydrophobic effects. With excellent dispersibility in soybean oil, loaded particles effectively inhibited thermal oxidation of soybean oil and loaded M200 nanoparticles was the most effective, which performed far better than tert-butylhydroquinone (TBHQ). Therefore, the nanoparticles offered a promising way to enhance oxidative stability of oils during thermal processing.