It is practical significant to improve oil extraction efficiency by selecting suitable pretreatment and the squeezing process according to rapeseed inherent characteristics.

根据油菜籽的这些固有特性，选择适宜的预处理方法和压榨工艺对改善油脂的提取效率具有实际意义。

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And rapeseed oil pitch which is the residual mixture in the extraction process to produce 45% sinapinic acid from refined (four-removing) rapeseed oil.

及精炼四脱莱油提取45％的芥酸后的下余物—菜油沥青。

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And rapeseed oil pitch which is the residual mixture in the extraction process to produce 45% sinapinic acid from refined (four-removing) rapeseed oil.

及精炼四脱莱油提取45％的芥酸后的下余物—菜油沥青。

youdao