以丝氨酸(Ser)和脯氨酸(Pro)为例,采用带回流的多级连续电渗析实验研究近等电点氨基酸的分离,探讨了回流级数、回流氨基酸流量、电流强度对分离性能的影响.结果表明:增加回流级数能在保持脯氨酸产品纯度基本不变的前提下提高丝氨酸产品的纯度.在4级回流时,脯氨酸产品纯度和丝氨酸产品纯度(摩尔分数)分别可以达到94.9%和90.9%.在相同的回流级数和电流强度下,增大回流氨基酸流量,可以提高丝氨酸产品纯度,但会降低脯氨酸产品纯度.在相同回流条件下,增大电流可以提高脯氨酸产品纯度,但会降低丝氨酸产品纯度.
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