Preparation and characterization of β ‐cyclodextrin–oregano essential oil microcapsule and its effect on storage behavior of purple yam

2020 ◽  
Vol 100 (13) ◽  
pp. 4849-4857 ◽  
Author(s):  
Haohe Huang ◽  
Chongxing Huang ◽  
Cheng Yin ◽  
Muhammad RU Khan ◽  
Hui Zhao ◽  
...  

Molecules ◽  
2016 ◽  
Vol 21 (6) ◽  
pp. 695 ◽  
Author(s):  
Dong Liu ◽  
Hongli Li ◽  
Lin Jiang ◽  
Yongming Chuan ◽  
Minglong Yuan ◽  
...  


2017 ◽  
Vol 110 ◽  
pp. 35-41 ◽  
Author(s):  
Seyed Mohammad Bagher Hashemi ◽  
Amin Mousavi Khaneghah


2020 ◽  
Vol 9 (10) ◽  
pp. e3849108722
Author(s):  
Lara Bueno Coelho ◽  
Robson Maia Geraldine ◽  
Miriam Fontes Araújo Silveira ◽  
Adriana Régia Marques de Souza ◽  
Maria Célia Lopes Torres ◽  
...  

The purpose of this study was to develop active films of low-density polyethylene incorporated with different concentrations of oregano essential oil (1, 2, 3, 4, 5 and 6% w / w). The production of the films was carried out in a modular mono screw extruder and the   antimicrobial activity was evaluated by the agar diffusion test. The films were analyzed for mechanical, optical and gaseous barrier properties to evaluate changes in the films due to the addition of an antimicrobial agent. As a result, it was found that the control film had a higher luminosity, compared to the others. The opacity was not affected. Saturation, however, had a tendency to transform more vivid colors, while the tone had a decrease tendency towards yellow. In terms of mechanical properties, elongation was not affected, Young's modulus decreased and tension increased. The CO2 permeability decreased. There were no inhibition halos around the films.



Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 2880
Author(s):  
Katya M. Aguilar-Pérez ◽  
Dora I. Medina ◽  
Jayanthi Narayanan ◽  
Roberto Parra-Saldívar ◽  
Hafiz M. N. Iqbal

The development of greener nano-constructs with noteworthy biological activity is of supreme interest, as a robust choice to minimize the extensive use of synthetic drugs. Essential oils (EOs) and their constituents offer medicinal potentialities because of their extensive biological activity, including the inhibition of fungi species. However, their application as natural antifungal agents are limited due to their volatility, low stability, and restricted administration routes. Nanotechnology is receiving particular attention to overcome the drawbacks of EOs such as volatility, degradation, and high sensitivity to environmental/external factors. For the aforementioned reasons, nanoencapsulation of bioactive compounds, for instance, EOs, facilitates protection and controlled-release attributes. Nanoliposomes are bilayer vesicles, at nanoscale, composed of phospholipids, and can encapsulate hydrophilic and hydrophobic compounds. Considering the above critiques, herein, we report the in-house fabrication and nano-size characterization of bioactive oregano essential oil (Origanum vulgare L.) (OEO) molecules loaded with small unilamellar vesicles (SUV) nanoliposomes. The study was focused on three main points: (1) multi-compositional fabrication nanoliposomes using a thin film hydration–sonication method; (2) nano-size characterization using various analytical and imaging techniques; and (3) antifungal efficacy of as-developed OEO nanoliposomes against Trichophyton rubrum (T. rubrum) by performing the mycelial growth inhibition test (MGI). The mean size of the nanoliposomes was around 77.46 ± 0.66 nm and 110.4 ± 0.98 nm, polydispersity index (PdI) of 0.413 ± 0.015, zeta potential values up to −36.94 ± 0.36 mV were obtained by dynamic light scattering (DLS). and spherical morphology was confirmed by scanning electron microscopy (SEM). The presence of OEO into nanoliposomes was displayed by attenuated total reflection Fourier-transform infrared (ATR-FTIR) spectroscopy. Entrapment efficiency values of 79.55 ± 6.9% were achieved for OEO nanoliposomes. In vitro antifungal activity of nanoliposomes tested against T. rubrum strains revealed that OEO nanoliposomes exhibited the highest MGI, 81.66 ± 0.86%, at a concentration of 1.5 µL/mL compared to the rest of the formulations. In summary, this work showed that bioactive OEO molecules with loaded nanoliposomes could be used as natural antifungal agents for therapeutical purposes against T. rubrum.



Planta Medica ◽  
2014 ◽  
Vol 80 (16) ◽  
Author(s):  
L Silva ◽  
J Rodilla ◽  
A Gomes


Author(s):  
Aline Krindges ◽  
Vanusca Dalosto Jahno ◽  
Fernando Morisso

Incorporation studies of particles in different substrates with herbal assets growing. The objective of this work was the preparation and characterization of micro/nanoparticles containing cymbopogon nardus essential oil; and the incorporation of them on bacterial cellulose. For the development of the membranes was used the static culture medium and for the preparation of micro/nanoparticles was used the nanoprecipitation methodology. The incorporation of micro/nanoparticles was performed on samples of bacterial cellulose in wet and dry form. For the characterization of micro/nanoparticles were carried out analysis of SEM, zeta potential and particle size. For the verification of the incorporation of particulate matter in cellulose, analyses were conducted of SEM and FTIR. The results showed that it is possible the production and incorporation of micro/nanoparticles containing essential oil in bacterial cellulose membranes in wet form with ethanol.



2016 ◽  
Vol 72 (8) ◽  
Author(s):  
Kiarash Afshar Pour Rezaeieh ◽  
Bunyamin Yildirim ◽  
Ahmet Metin Kumlay


2021 ◽  
Vol 117 ◽  
pp. 106733
Author(s):  
Laleh Almasi ◽  
Mohsen Radi ◽  
Sedigheh Amiri ◽  
David Julian McClements


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