铝的生物学作用研究概况

除茶叶等某些天然食品中铝含量较高外 ,大多数主要食品中铝含量较低 ,一般不超过 10mg kg。而在加有含铝添加剂的食品中铝含量较高。经含铝混凝剂处理后的饮用水铝浓度升高。我国居民从铝制炊具摄入的铝为 4mg (capit·d)。成人一般摄铝量在 10mg (capit·d)左右 ,而摄入高铝性食品或含铝药品摄铝量可增至每人每天数十至数百毫克。铝主要在十二指肠吸收 ,主要经肾排出。铝的蓄积与中枢神经系统损害、骨损害和造血系统损害有关 ,尤其与阿尔茨海默氏病关系密切。本文就铝在食品中的含量、铝在体内代谢、铝的生物毒性及其某些未解决的问题等进行综述

Current researches on biological effect of aluminum

Aluminum content is generally not high (less that 10 mg/kg) in most foods with the exception of a few such as tea, spinach, and so on, that contain more amounts of it. However, aluminum content is much high in foods in those aluminum-containing food additives are used. After drinking water is treated with aluminum-containing coagulant agent, it's aluminum concentration increases. The aluminum intake of residents from cookware in our country is 4 mg/(capit.d). The aluminum intake in adults is usually 10 mg/(capit.d), but it will rise up to tens to hundreds mg/(capit.d) when residents consume foods with a high aluminum concentration or aluminum-containing drugs. Aluminum is absorbed mainly via a duodenum, and this can be influenced by multiple factors. Absorbed aluminum is discharged primarily by renal excretion. Aluminum accumulation in human body might harm central nervous system, bone lesions, and hemopoietic system, and is a suspected causal factor to Alzheimer's disease.