Polyphenols from extra virgin olive oil (EVOO) are bioactive compounds with significant antioxidant properties, but their instability necessitates effective encapsulation for enhanced stability and controlled release. This study prepared water-in-oil-in-water (W1/O/W2) emulsions to encapsulate EVOO using a two-step emulsification technique with varying concentrations of soy protein isolate (SPI) (0-10% /), maltodextrin (MD) (0-20% /), and propylene glycol alginate (PGA) (0-0.5% /). A three-factor central composite design (CCD) combined with response surface methodology (RSM) was employed to establish 20 W1/O/W2 emulsions to analyze the effects of the formulation on emulsion properties. Additionally, the effects of different pH levels on emulsion stability were investigated. The results showed that the ratios of SPI, MD, and PGA significantly influenced particle size distribution, stability, and encapsulation efficiency. PGA enhanced the rigidity of the interfacial membrane, forming stable core-shell structures and reducing EVOO release. The optimal formulation (7.887% SPI, 15.774% MD, 0.395% PGA) achieved superior encapsulation efficiency (97.66%), long-term stability, and viscosity below 300 mPa·s. Cryo-TEM analysis confirmed the formation of core-shell structures, while Zeta potential measurements indicated smaller particle sizes and enhanced stability at pH 11. This optimized W1/O/W2 emulsion system offers a promising food-grade delivery platform for hydrophobic bioactive compounds, enabling enhanced stability and controlled release of EVOO polyphenols for applications in functional foods, nutraceuticals, and other industries.
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http://dx.doi.org/10.3390/molecules30050978 | DOI Listing |
Magn Reson Med
March 2025
Center for Magnetic Resonance Research, Radiology, Medical School, University of Minnesota, Minneapolis, Minnesota, USA.
Purpose: To propose a two-step, nonlocal principal component analysis (PCA) method and demonstrate its utility for denoising complex diffusion MR images with a few diffusion directions.
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Dalton Trans
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Institute of Flow Chemistry and Engineering, School of Chemistry and Materials, Jiangxi Normal University, Nanchang 330022, China.
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College of Textile and Clothing Engineering, National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, 215021, P. R. China.
Hydrogel-based solar interfacial evaporators, featuring various channels such as random, unidirectional, and radial array, are considered effective for seawater desalination owing to their porous structure, lower evaporation enthalpy, and controllable water transport capacity. However, each individual array structure has its own strengths and limitations, influencing water transportation, thermal management, and salt rejection. By combining the benefits of each array configuration into a single evaporator, the evaporation performance can be maximized.
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March 2025
Department of Materials Engineering and Organic Electronics Research Center, Ming Chi University of Technology, New Taipei City, 24301, Taiwan.
Metal halide perovskites are ideal candidates for indoor photovoltaics (IPVs) due to their tunable bandgaps, which allow the active layers to be optimized for artificial light sources. However, significant non-radiative carrier recombination under low-light conditions has limited the full potential of perovskite-based IPVs. To address this challenge, an integration of perylene diimide (PDI)-based sulfobetaines as cathode interlayers (CILs) is proposed and the impact of varying alkyl chain length (from 1,2-ethylene to 1,5-pentylene) between the cationic and the anionic moieties is examined.
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