Departament de Biologia Vegetal, Universitat de Barcelona, Facultat de Biologia, Avinguda Diagonal 645, E-08028 Barcelona, Spain.
Trends Plant Sci. 2010 Oct;15(10):582-92. doi: 10.1016/j.tplants.2010.07.003. Epub 2010 Aug 21.
Plant-derived vitamins are of great interest because of their impact on human health. They are essential for metabolism because of their redox chemistry and role as enzymatic cofactors, not only in animals but also in plants. Several vitamins have strong antioxidant potential, including both water-soluble (vitamins B and C) and lipid-soluble (vitamins A, E and K) compounds. Here, we review recent advances in the understanding of antioxidant roles of vitamins and present an overview of their occurrence within the plant kingdom, different organs and subcellular location; their major biosynthetic pathways, including common precursors and competitive pathways; and their antioxidant function. In particular, we discuss novel evidence for, as well as evidence against, a role of B vitamins as important antioxidants.
植物源性维生素因其对人类健康的影响而备受关注。由于其氧化还原化学性质和作为酶辅因子的作用，它们不仅在动物中，而且在植物中对新陈代谢都是必不可少的。一些维生素具有很强的抗氧化潜力，包括水溶性（维生素 B 和 C）和脂溶性（维生素 A、E 和 K）化合物。在这里，我们综述了近年来对维生素抗氧化作用的理解进展，并概述了它们在植物界、不同器官和亚细胞定位中的存在情况；它们的主要生物合成途径，包括常见的前体和竞争途径；以及它们的抗氧化功能。特别是，我们讨论了 B 族维生素作为重要抗氧化剂的作用的新证据以及反证。
