摘要
草酸是植物体内一种简单的二元酸,在植物中广泛分布,具有重要的生理功能。然而草酸作为一种抗营养素,大量食用含草酸的蔬菜可以显著影响矿物元素的吸收和增加患肾结石的风险。植物中草酸的合成有三条途径,即乙醛酸/乙醇酸途径、抗坏血酸途径和草酰乙酸合成途径;草酸的降解也有三种方式,即经过氧化、脱羧和乙酰化作用最终生成CO2。植物草酸的积累受品种和施肥及种植季节等农艺管理技术的影响。
Oxalic acid （OA）, the smallest （two-carbon） dicarboxylic acid, is broadly distributed in plants and has various physiological functions. However, oxalic acid is an antinutrient, and excessive consumption of oxalate-rich foods inhibits mineral absorption and increases risk of some diseases such as kidney stones in the digestive system. It has been proposed that oxalic acid is biosynthesized via three pathways, namely glyoxylate/ glycolate, ascorbate and oxaloacetate. The degradation of oxalate occurs through oxidation, decarboxylation and acetylation. Besides, the accumulation of oxalic acid is affected by varieties and agronomic measurements.
出处
《植物生理学报》
CAS
CSCD
北大核心
2015年第3期267-272,共6页
Plant Physiology Journal
基金
上海市协同创新中心项目(ZF1205)
关键词
植物
草酸
乙醛酸
草酰乙酸
农艺技术
plant
oxalic acid
glyoxylate
oxaloacetate
agronomic techniques
