Biodiesel is an alternative to fossil fuels for diesel engines, yet actual biofuel properties need to be tuned to comply with fuel standards. In particular, fuel stability is required for efficiency and commercial use. Fuel stability varies with the nature and proportion of chemical functional groups of biodiesel. Optimum oxidation stability is required because degradation by oxidation gives products that compromise fuel properties and impair fuel quality and engine performance. For instance, oxidation induces the formation of short-chain corrosive acids and deposits. Here, we review techniques to improve the oxidation stability of biodiesel. For instance, stability is improved by additives such as antioxidants. Factors influencing oxidation stability include composition of fatty acids, acid content, peroxide content, iodine content, viscosity, insoluble impurities, external conditions, and storage material. Antioxidants reduce lipid peroxidation at the beginning of the chain reaction and increase the onset temperatures.

生物柴油是柴油发动机的化石燃料的替代品，但实际的生物燃料特性需要调整以符合燃料标准。特别地，为了效率和商业用途，需要燃料稳定性。燃料稳定性随生物柴油化学官能团的性质和比例而变化。需要最佳的氧化稳定性，因为氧化降解会产生损害燃油性能，损害燃油质量和发动机性能的产品。例如，氧化引起短链腐蚀性酸和沉积物的形成。在这里，我们综述了提高生物柴油氧化稳定性的技术。例如，通过诸如抗氧化剂的添加剂改善了稳定性。影响氧化稳定性的因素包括脂肪酸的组成，酸含量，过氧化物含量，碘含量，粘度，不溶性杂质，外部条件和存储材料。抗氧化剂可在链反应开始时降低脂质过氧化作用，并增加起始温度。