L-乳酸钙间歇结晶粒度的研究  

Size of batch crystallization of L-calcium lactate

作　　者：景晓华[1] 王学魁[1] 杨立斌[1] 王彦飞[1] 马凯哥 刘哲 

机构地区：[1]天津科技大学海洋资源与化学重点实验室,天津300457 [2]河南金丹乳酸科技有限公司,河南郸城477150

出　　处：《中国酿造》2010年第3期73-75,共3页China Brewing

摘　　要：研究了十二烷基苯磺酸钠作为添加剂对L-乳酸钙间歇结晶晶体粒度的影响,研究结果表明:十二烷基苯磺酸钠的加入增大了L-乳酸钙结晶过程的界面能,从而抑制自发成核过程的发生,促进晶体的生长,改善晶体的粒度。以十二烷基苯磺酸钠作为添加剂,在添加剂量为80mg/kg时,晶体的平均粒径分别为236μm,结晶温度对L-乳酸钙晶体的粒度有重要影响,正交试验的最佳结晶控制条件为:添加剂加入量80mg/kg、结晶温度39℃,搅拌速率220r/min,晶种加入量为溶液质量的2.5‰,降温速率10℃/h。The effect of additives on the control o f crystal size for L-calcium lactate was discussed in this paper. The additives was chosen to be sodium dodecyl benzene sulfonate. And the results showed that the crystallization interfacial energy of L-calcium lactate was increased after adding sodium dodecyl benzene sulfonate as additive. Therefore the crystal nucleus formation was inhibited and the crystal growth was improved. The average diameter is 236 μm, the concentration of additive is 80 mg/kg. The optimal conditions were srudied using orthogonal test design and the results were shown as follows： the concentration of additive is 80 mg/kg, the crystallization temperature is 39 ℃, the stirring rate is 220 r/min, the amount of crystal seed is 2.5‰ of the solution quality, the cooling rate is 10 ℃/h.

关 键 词：L-乳酸钙 添加剂 结晶 平均粒径 

分 类 号：TS202.3[轻工技术与工程—食品科学]