Bering found that the micro content interim metals can speedup the oil oxidation. Sorbic acid, glycin and citric acid are used as anti oxidation agents.

• Bering人提出的油脂中存在痕量过渡金属加速氧化的原理 ；利用山梨酸、甘氨酸和柠檬酸为螯合剂 ；对样品的抗氧化性能进行了研究 .