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<p>Effects of aldehydes on the oxidative stability and physicochemical properties including oxygen solubility, surface tension, interfacial tension, and droplet sizes were evaluated in an oil-in-water (O/W) emulsion matrix. As amphiphilic aldehydes including propanal, hexanal, and nonanal added in O/W emulsion, headspace oxygen depletion and formation of conjugated diene and lipid hydroperoxides increased significantly (<i>p</i> &lt; 0.05) compared to O/W emulsion without the addition of aldehydes, which implies added aldehydes acted as pro-oxidants in O/W emulsion. Oxygen solubility was increased in nonanal added O/W emulsion whereas surface tension and interfacial tension decreased significantly in nonanal added groups (<i>p</i> &lt; 0.05), which implies that added aldehydes induced the internal environmental changes of the O/W emulsion. No significant differences were observed in droplet size and zeta potential, irrespective of the addition of aldehyde. Amphiphilic aldehydes could partly play prooxidative roles in O/W emulsion due to the increasing oxygen solubility and decreasing surface and interfacial tension.</p>

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Prooxidative properties of aldehydes in oil-in-water emulsion on the aspects of physicochemical properties

  • 期刊论文

  • 发表日期：

    2025年6月19日

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  • KeunCheol Yoo,
  • ChanHyung Kim,
  • Won Young Oh,
  • JaeHwan Lee

摘要

Effects of aldehydes on the oxidative stability and physicochemical properties including oxygen solubility, surface tension, interfacial tension, and droplet sizes were evaluated in an oil-in-water (O/W) emulsion matrix. As amphiphilic aldehydes including propanal, hexanal, and nonanal added in O/W emulsion, headspace oxygen depletion and formation of conjugated diene and lipid hydroperoxides increased significantly (p < 0.05) compared to O/W emulsion without the addition of aldehydes, which implies added aldehydes acted as pro-oxidants in O/W emulsion. Oxygen solubility was increased in nonanal added O/W emulsion whereas surface tension and interfacial tension decreased significantly in nonanal added groups (p < 0.05), which implies that added aldehydes induced the internal environmental changes of the O/W emulsion. No significant differences were observed in droplet size and zeta potential, irrespective of the addition of aldehyde. Amphiphilic aldehydes could partly play prooxidative roles in O/W emulsion due to the increasing oxygen solubility and decreasing surface and interfacial tension.