Department of Animal and Wildlife Science, University of Pretoria, South Africa.
Food Chem. 2013 Oct 1;140(3):520-5. doi: 10.1016/j.foodchem.2012.06.066. Epub 2012 Jun 29.
South Africa embarked on mandatory vitamin and mineral fortification of wheat flour and maize meal in 2003 as part of a multi-faceted approach to alleviate malnutrition. However, it was reported, in 2008, that vitamin A deficiency increased despite the mandatory fortification programme. This motivates an investigation into the absorption of vitamin A as fortificant in the maize meal. Relative absorption, in chickens as the biological model, was determined by evaluating growth and vitamin A status. The weight, cumulative feed intake and liver retinol stores of chickens on different diets were measured over a 6week period. The fortified white maize meal diet was able to maintain the vitamin A status of the chickens. Poor absorption of the fortificant vitamin A is therefore not a constraint in combating vitamin A deficiency. It is in therefore also important to focus on the level of fortification delivered when consumed as a traditional prepared dish. In the traditional diet, maize porridge is often consumed with only a relish. The total fat content of the traditional meal is very low, lacking absorption enhancers.
南非于 2003 年开始强制在小麦面粉和玉米粉中添加维生素和矿物质，作为缓解营养不良的多方面措施的一部分。然而，据报道，尽管实施了强制性强化计划，但维生素 A 缺乏症仍在增加。这促使我们调查维生素 A 作为玉米粉强化剂的吸收情况。相对吸收率通过评估生长和维生素 A 状况来确定，在鸡作为生物模型。在 6 周的时间里，测量了不同饮食的鸡的体重、累计饲料摄入量和肝脏视黄醇储存量。强化白玉米粉饮食能够维持鸡的维生素 A 状态。因此，强化剂维生素 A 吸收不良并不是对抗维生素 A 缺乏症的限制因素。因此，当作为传统制备的菜肴食用时，关注所摄入的强化水平也很重要。在传统饮食中，玉米粥通常只与调味料一起食用。传统膳食的总脂肪含量非常低，缺乏吸收促进剂。
