摘要
以米糠为原料，对制备植酸钙的各种沉淀条件作了研究。结果表明，沉淀植酸钙的最佳条件是：采用两步中和法，用单一饱和石灰水或配合ＮａＯＨ溶液把提取液的ｐＨ值调至５，静置１５ｍｉｎ再调ｐＨ至７～１０，放置３０ｍｉｎ或３０ｍｉｎ以上，便可过滤、洗涤、烘干、粉碎，得到粗植酸钙。
The conditions for precipitating calcium phytate form rice bran have been studied. The results showed that the optimal method for preciptating calcium phytate was two-step neutralization, The extractive solution was adjusted to pH 5 . by adding saturated lime water or mixture of lime water and HaOH solution,laid up statically for 15 minutes, then the solution was adjusted to pH 7-10, laid up for 30 or more than 30 minutes. After filtrating, washing, drying ang grounding the rude calcium phytate was obtained.
关键词
米糠
植酸钙
沉淀
rice bran
calcium Phytate
condition of sediment
