作　　者： ; ; ; ;

机构地区： 暨南大学生命科学技术学院生物工程学系

出　　处： 《食品科学》 2005年第5期248-252,共5页

摘　　要： 铁是人体必需的微量营养元素。然而机体缺铁是全世界,特别是发展中国家最主要的营养问题之一。本文综述了利用基因工程提高植物铁含量和增加铁的生物有效度的方法。这些方法主要包括导入乳铁蛋白、铁蛋白和豆血红蛋白等金属结合蛋白基因以及植物吸收、转运铁元素的基因例如铁还原酶基因以提高植物的铁含量;通过降低植酸等铁吸收抑制因子以及增加氨基酸和维生素等铁吸收促进因子以提高铁的生物有效度。 Iron is the micronutrient essential for human body. Iron deficiency is the major nutrition problem all over the world, especially in the developing counties. Plant gene engineering can be used to increase the content and its bioavailability of iron in plant. This may be achieved by introduction of genes that can code iron-binding proteins and increase expression of proteins responsible for iron absorption and transport in plants. For genetically modifyied plants, their contents of inhibitors, such as phytate would substantially reduced iron absorption as another approach. Increasing the expression of compounds such asβ- carotene and vitamin E would enhance iron absorption as also a possibility.

关 键 词： 植物基因工程 铁营养 生物有效度

领　　域： [轻工技术与工程] [轻工技术与工程] [生物学]