نوع مقاله : مقاله کامل علمی پژوهشی
نویسندگان
1 گروه علوم و صنایع غذایی آموزشکده فنی دختران ارومیه، دانشگاه فنی و حرفهای، آذربایجان غربی.
2 گروه علوم و صنایع غذایی آموزشکده فنی دختران ارومیه، دانشگاه فنی و حرفهای، آذربایجان غربی
3 گروه علوم و صنایع غذایی، موسسه آموزش عالی صبا، آذربایجان غربی
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Background and purpose: Today, contaminants from synthetic polymers have drawn attention to the use of biodegradable materials. Over the past two decades, the study of biodegradable materials derived from proteins and carbohydrates has expanded widely. These macromolecules can be a good alternative to synthetic polymers derived from petroleum derivatives. Films based on these natural materials, due to their biodegradability, can be a promising solution to the environmental problems caused by synthetic polymers. In addition to biodegradability, these films have good mechanical properties and poor permeability to water vapor, and it is necessary to take measures to improve their impermeability. Therefore, the aim of this study was to investigate the effect of adding titanium oxide nanoparticles and grape seed oil essential oil to sodium caseinate as a factor that enhances its properties.
Materials and Methods: Sodium caseinate-based nanocomposite films were prepared at different levels of titanium oxide nanoparticles (zero to 1.5%) and grape seed oil at different levels (0 to 500 ppm) based on the central composite experimental design (CCD). The effects of these variables on the physical and mechanical properties, water vapor permeability, antioxidant properties and microstructure of the produced films were investigated.
Results: The results showed that the addition of titanium oxide nanoparticles improved the mechanical properties of sodium caseinate films. In this regard, sodium caseinate films prepared from 1.5% titanium nanoxide and 500 ppm grape seed essential oil have the highest tensile strength. The results of electron microscopy test showed that the addition of titanium oxide nanoparticles and increasing its concentration led to the indirect penetration of water, which reduced the permeability of the films to water vapor to 4.89 kg / m. The addition of grape seed oil essential oil also caused antioxidant effects in the produced films. So that the films containing 250 ppm of grape seed oil essential oil showed 74.86% antioxidant activity.
Conclusion: Overall, the results showed that the addition of titanium oxide nanoparticles and grape seed oil essential oil can have positive effects on the physical and Structural properties of sodium caseinate and help improve its properties. Overall, the results showed that the addition of titanium oxide nanoparticles and grape seed oil essential oil can have positive effects on the physical and Structural properties of sodium caseinate and help improve its properties. Overall, the results showed that the addition of titanium oxide nanoparticles and grape seed oil essential oil can have positive effects on the physical and Structural properties of sodium caseinate and help improve its properties.
کلیدواژهها [English]