摘要
本文研究探讨了谷氨酸晶体在乙醇—水混合溶剂中 ,温度区间为 5～ 5 0℃的溶解度和过饱和度曲线 ,确定了其生长介稳区范围 ,拟合出了溶解度随温度、乙醇浓度变化的经验方程式为S =(0 84 4 - 0 30 6mm)× 2 831× 10 - 2 8T11.10 8- 0 4 89m - 9 73× 10 - 2 ,并讨论了溶液的稳定性。研究结果表明以混合溶剂代替纯水作溶剂使溶液的介稳区变宽 ,因此有望改善晶体生长条件 。
The solubilities of glutamic acid crystal in ethanol-water solvents were determined in the temperature range 5～50 ℃.An empirical formula S=(0 844-0 306 m)×2 831×10 -28 T 11 108 -0 489 m-9 73×10 -2 was obtained by curve fitting.The supersaturation curve and metastabe region of glutamic acid were given.The metastable regions of glutamic acid solutions in ethanol-water solvents were wider than that in pure water,so that it can be probably hoped to improve the condition of crystal growth.
出处
《中国调味品》
CAS
北大核心
2001年第11期21-23,共3页
China Condiment
基金
广东省自然科学基金资助项目 (980 5 47)
