Abstract: The factors were studied which influenced elution curves of amino nitrogen on LSI-1010 cation exchange resin.Theoptimum conditions were determined. It was shown that the eluat especially its concentration, flow rate and temperature wouldinfluence elution curves of amino nitrogen on LS-1010 cation exchange resin; The optimum parameters were: 4% HCl,2BV/h and20℃.The aim of saving the eluate could be achieved when it the eluate was regenerated after 4 cycles of treatment. The efficiencyof eluate reclaim was above 80%.18BV of the eluate could be saved.

Key words: apple juice, amino nitrogen, desorption behavior, elution