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吃进去的脂肪哪去了
更新时间: 2020-10-29 00:00:00  

吃进去的脂肪经过消化水解后成为甘油、短链和中链脂肪酸等小分子,最后直接经吸收入血液。食物中的油性物质主要是油和脂肪,一般把常温下是液体的称作油,而把常温下是固体的称作脂肪。进入口腔后,唾液腺分泌的脂肪酶可水解部分实物的脂肪,但是这种消化能力比较弱。脂肪的消化在胃里也有限,主要消化场所是在小肠里。来自胆囊中的胆汁首先将脂肪乳化,胰腺和小肠分泌的脂肪酶将甘油三酯水解成游离脂肪酸、甘油单酯和苷油,最后吸收入血液。

关键词: 进去 脂肪

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