Phosphatidylcholine of high purity(PC, content 92.80%) was prepared from market soybean power phospholipids(PC content 14.05%) by using solvent extraction and column chromatography.

采用溶剂提取和柱色谱法分离纯化市售大豆粉末磷脂（卵磷脂含量14.05%），得到高纯度的卵磷脂产品（纯度92.80%）。

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Objection: To investigate the preventive effects of soybean phosphatidylcholine(PC)on spatial learning and memory deficits in rats with vascular dementia(VD).

目的：探讨大豆磷脂酰胆碱对血管性痴呆大鼠学习记忆能力的作用。

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