Unverified85% confidenceFactTime unknown
游离型叶黄素可直接被人体吸收,酯化型需经肠道脂肪酶水解才能吸收;酯化型标注含量常为叶黄素酯而非纯叶黄素,实际叶黄素当量约为标注值的50-55%
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Unverified游离型叶黄素分子量小可直接吸收,酯化型(叶黄素酯)需经肠道酯酶分解后吸收,标注含量相同时游离型有效成分更高;酯化型标注的多为叶黄素酯总量需换算(约折损50%实际叶黄素)85% similarUnverified游离型叶黄素无需胃酸分解可直接吸收,生物利用度比叶黄素酯高约20%-30%;叶黄素酯(如FloraGLO常见形式)需要脂肪和酯酶分解,适合随餐服用85% similarUnverified叶黄素酯的生物利用度需经肠道酶水解,游离叶黄素可直接吸收;同等标注量下游离型吸收更直接,但叶黄素酯稳定性更好、标注含量常按酯计算实际叶黄素当量偏低80% similarUnverified叶黄素酯与游离叶黄素是两种形式,标签常混淆——叶黄素酯需在肠道水解为游离态,标注含量常虚高,换算后游离叶黄素约为酯含量的50-55%,比较产品时需换算为等效游离叶黄素76% similarUnverified叶黄素酯需在体内转化为游离叶黄素才能被利用,吸收效率与是否随餐(含油脂)服用有关,空腹吃吸收较差75% similar
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