Hydroperoxides are formed as the primary product during lipid oxidation, being analyzed as the peroxide value to detect the degradation level of oils and fats. As an alternative to the classical titration method according to Wheeler, a ¹H‐{³¹P} decoupled NMR method is developed using triphenylphosphine (TPP) as a tagging agent. TPP reacts with peroxides to form TPP oxides. The quantification of the peroxide value is performed by comparing the amount of reacted TPP oxide and non‐reacted TPP. This approach eliminates the requirement for an additional internal standard. Low‐oxidized oils (peroxide value < 3 meq/kg) and high‐oxidized oils with peroxide values of 150 meq/kg are precisely quantified with an relative standard deviation (RSD) of 4.90% and 0.16%, respectively. A total number of 108 oil samples are examined using the newly‐developed ¹H‐{³¹P} decoupled NMR method, indicating the applicability for vegetable oils and krill oils.

中文翻译：

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NMR光谱：使用三苯膦作为标记试剂测定蔬菜和磷虾油中的过氧化物值

氢过氧化物是脂质氧化过程中的主要产物，被分析为过氧化物值以检测油脂的降解水平。作为惠勒的经典滴定方法的替代方法，¹ H- { ³¹利用三苯膦（TPP）作为标记剂开发了P}解耦NMR方法。TPP与过氧化物反应形成TPP氧化物。通过比较已反应的TPP氧化物和未反应的TPP的量进行过氧化物值的定量。这种方法消除了对附加内部标准的需求。分别以4.90％和0.16％的相对标准偏差（RSD）精确定量了低氧化油（过氧化物值<3 meq / kg）和过氧化值为150 meq / kg的高氧化油。使用新开发的¹ H- { ³¹ P}解耦NMR方法检查了总共108个油样，表明其适用于植物油和磷虾油。