缓释型石膏微粒豆腐凝固剂制备工艺研究Study on Preparation Technology of Slow-Release Gypsum Particle Tofu Coagulant
马勇,柏亚萱,高子鑫,杨柳莺,杨金玉,陈志豪,盘赛昆
摘要(Abstract):
文章研究了石膏豆腐凝固剂的改性,通过单因素试验与正交试验分析得到最佳制备工艺:以生石膏为原料,将其配制成浓度为5%的料液,用食品级烧碱调节pH值至10,设置反应釜转速为400 r/min,在130℃条件下反应20 min,经100 MPa高压均质后离心去除上层水,使用浓度为3.34 g/L的(NaPO_3)_6溶液在30℃条件下将微粒化后的凝固剂浸泡30 min,然后经喷雾干燥即可制备出Ca~(2+)释放速度慢且颗粒更细小的缓释型石膏微粒豆腐凝固剂。将生石膏与改性后的石膏在相同条件下进行pH值动态测定与动态流变特性对比分析,结果表明缓释型石膏微粒豆腐凝固剂的凝胶特性比生石膏强。
关键词(KeyWords): 石膏豆腐凝固剂;改性;正交试验;(NaPO_3)_6;pH值;流变特性
基金项目(Foundation): 江苏省普通高校自然科学研究计划项目(KQ12009)
作者(Author): 马勇,柏亚萱,高子鑫,杨柳莺,杨金玉,陈志豪,盘赛昆
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