Gadusols are efficient nature UV sunscreens with antioxidant capacity. The kinetics of the quenching reactions of singlet oxygen O₂(¹∆_g) by gadusol species was evaluated in aqueous solution as well as in the presence of direct charged micelles. Time-resolved phosphorescence detection of O₂(¹∆_g) indicated that gadusolate, the main species under biological pH, is a more efficient quencher than the enol form with a rate constant of ca. 1.3 × 10⁸ L mol⁻¹ s⁻¹. The deactivation proceeds via a collisional mechanism with clear dominance of chemical pathways, according to the rates of gadusol and oxygen consumptions, and typical photooxidation quantum yields of ca. 7%. The relative contributions of the chemical and physical quenching steps were not affected by the presence of anionic or cationic micelles emulating simple pseudo-biological environments. The products of the photo-oxidative quenching support a type II mechanism initiated by the addition of O₂(¹∆_g) to the C-C double bond of gadusolate. These results point to the relevance of considering the role of sacrifice antioxidant along with the UV-screening function for gadusol, particularly in the context of potential biotechnological applications of this natural molecule.

Gadusols是具有抗氧化能力的高效自然紫外线防晒霜。在水溶液中以及在直接带电的胶束存在下，评估了gadusol物种对单线态氧O ₂（¹ ∆ _g）猝灭反应的动力学。时间分辨的O ₂（¹ ∆ _g）磷光检测表明，gadusolate是生物pH值下的主要物质，它比烯醇形式的猝灭剂更有效，速率常数为。1.3×10 ⁸  L mol ^-1  s ^-1。停用过程通过根据gadusol和氧气消耗的速率，以及ca的典型光氧化量子产率，得出一种具有明显化学路径优势的碰撞机理。7％。化学和物理猝灭步骤的相对贡献不受模拟简单的伪生物环境的阴离子或阳离子胶束的存在的影响。光氧化淬灭的产物支持通过添加O ₂（¹ ∆ _g）到Gadusolate的CC双键上。这些结果表明考虑牺牲抗氧化剂的作用以及对gadusol的紫外线屏蔽功能的相关性，特别是在该天然分子的潜在生物技术应用中。