After column chromatographic separation, re-crystallization treatment and supercritical fluid precipitation treatment, the purity of lutein is improved.
粗提物经柱层析分离，重结晶，再经过超临界流体沉淀处理后，可提高叶黄素的纯度。
First, the separation of L-Valine on a single chromatographic column was investigated.
本文首先研究了缬氨酸在单根色谱柱上的分离情况。
Several factors affecting the column performances in the preparation procedure were investigated and the chromatographic separation conditions were optimized.
考察了柱制备过程中影响柱性能的主要因素，优化了色谱分离条件。
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