The nanoencapsulation of thyme essential oil has been greatly important in food science, given its remarkable antioxidant and antimicrobial capacity. However, its analysis in storage has not been established in terms of physical stability, antioxidant capacity, and release studies. In this paper, chitosan-thyme oil nanocapsules were prepared by the ionic gelation method. These were characterized for differential calorimetry, release kinetic, and infrared spectroscopy. The chitosan-thyme oil nanocapsules were stored at 4 and 25 °C for 5 weeks, the changes in particle size, zeta potential, stability (diffuse reflectance), and antioxidant capacity were analyzed and associated with nanocapsules' functionality. The results show that the storage time and temperature significantly modify the particle size (keeping the nano-size throughout the storage), the release of the bioactive was Fickian with t according to Korsmery & Peppas and best described by Higuchi model associated with changes in the zeta potential from 8 mV to -11 mV at 4 °C. The differential scanning calorimetry and infrared spectroscopy results confirm the good integration of the components. The antioxidant capacity revealed a direct relationship with residual oil concentration with a decrease in the ABTS test of 15% at 4 °C and 37% at 25 °C. The residual bioactive content was 77% at 4 °C and 62% at 25 °C, confirming nanoencapsulation effectiveness. The present investigation provides helpful information so that these systems can be applied in food conservation.
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http://dx.doi.org/10.3390/gels7040212 | DOI Listing |
Carbohydr Polym
March 2025
School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China; Institute of Advanced Materials, China University of Petroleum (East China), Qingdao 266580, China.
Research on stimuli-responsive micro-nanocontainers has gained attention for targeted corrosion inhibition and controlled emulsification-demulsification in oil recovery. However, existing nanocontainers face issues like irreversible drug release and limited functionality. This study presents a multi-functional nanocontainer design with reversible drug release and emulsification-demulsification capabilities.
View Article and Find Full Text PDFPharmaceutics
December 2024
Unit Operations Lab, School of Technology, Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga 6681-Prédio 30, Bloco F, Sala 208, Porto Alegre 90619-900, Brazil.
Degradation by physical and chemical agents affects the properties of essential oils; therefore, this study aimed to protect the volatile compounds present in essential oils through biopolymer encapsulation. The (Lam) DC. essential oil was obtained by steam distillation at 2.
View Article and Find Full Text PDFAnim Sci J
December 2024
Department of Animal Science, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Exp Parasitol
December 2024
Department of Pathobiology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran. Electronic address:
Background/objective: The primary treatment for cysts is surgery, including removing the cyst and administering the appropriate chemical drugs. Herbal remedies have gained popularity as a viable and secure alternative to conventional pharmaceuticals. It may be advantageous to use nanocapsules to overcome the bioavailability challenges associated with herbal remedies like curcumin.
View Article and Find Full Text PDFNanoscale Adv
September 2024
Department of Chemistry, School of Sciences & Engineering, The American University in Cairo AUC Avenue, SSE # 1184, P.O. Box 74 New Cairo 11835 Egypt
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