Environmental Processing of Lipids Driven by Aqueous Photochemistry of α-Keto Acids.,ACS Central Science

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Environmental Processing of Lipids Driven by Aqueous Photochemistry of α-Keto Acids.
ACS Central Science ( IF 12.7 ) Pub Date : 2018-04-18 , DOI: 10.1021/acscentsci.8b00124
Rebecca J Rapf ₁ , Russell J Perkins ₁ , Michael R Dooley ₁ , Jay A Kroll ₁ , Barry K Carpenter ₂ , Veronica Vaida ₁

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Sunlight can initiate photochemical reactions of organic molecules though direct photolysis, photosensitization, and indirect processes, often leading to complex radical chemistry that can increase molecular complexity in the environment. α-Keto acids act as photoinitiators for organic species that are not themselves photoactive. Here, we demonstrate this capability through the reaction of two α-keto acids, pyruvic acid and 2-oxooctanoic acid, with a series of fatty acids and fatty alcohols. We show for five different cases that a cross-product between the photoinitiated α-keto acid and non-photoactive species is formed during photolysis in aqueous solution. Fatty acids and alcohols are relatively unreactive species, which suggests that α-keto acids are able to act as radical initiators for many atmospherically relevant molecules found in the sea surface microlayer and on atmospheric aerosol particles.

中文翻译：

α-酮酸的水光化学驱动的脂质的环境加工。

阳光可以通过直接的光解，光敏化和间接过程来引发有机分子的光化学反应，这通常会导致复杂的自由基化学反应，从而增加环境中的分子复杂性。α-酮酸充当本身不具有光活性的有机物质的光引发剂。在这里，我们通过两种α-酮酸，丙酮酸和2-氧辛酸与一系列脂肪酸和脂肪醇的反应证明了这种能力。我们显示了五种不同的情况，即在水溶液中光解过程中在光引发的α-酮酸和非光敏物质之间形成了交叉产物。脂肪酸和醇是相对不活泼的物种，

更新日期：2018-04-18

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