摘要
Dietary carotenoid bioavailability is rather low in comparison to other macronutrients. However, they are absorbed and distributed to hepatic and some extrahepatic tissues, including skin.
Co-consumption of dietary fat is essential for carotenoid bioavailability. In contrast, the presence of some other dietary constituents, such as fiber, may reduce carotenoid bioavailability.
Fruits and vegetables contain bioactive agents, including carotenoids, that protect not only plants but also humans against solar ultraviolet (UV) radiation damage. Only recently has the role of dietary bioactive agents in the photoprotection of skin started to be investigated and appreciated.
Systemic photoprotection via a dietary supply of carotenoids may contribute significantly to skin health and complement the use of sunscreens in protecting the skin against the damaging effects of solar UV exposure.
However, the knowledge acquired so far on the role of dietary carotenoids in photoprotection is still in its infancy and needs to be further investigated.
摘要译文
膳食类胡萝卜素的生物利用度是相当低的，相较于其他营养素。然而，它们被吸收并分布到肝和一些肝外组织，包括皮肤。\r
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食物中的脂肪联合消费类胡萝卜素的生物利用度是至关重要的。与此相反，一些其它膳食组分的存在下，如纤维，可以减少类胡萝卜素的生物利用度。\r
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水果和蔬菜中含有生物活性剂，包括类胡萝卜素，这不仅保护植物，而且对人类的太阳紫外线（UV）辐射的伤害。直到最近，膳食生物活性剂在皮肤的光保护作用开始进行调查和赞赏。\r
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经类胡萝卜素的饮食供给全身光保护可显著皮肤的健康促进和补充的使用遮光剂在防止太阳紫外线照射的破坏性影响皮肤。\r
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然而，收购至今膳食类胡萝卜素在光保护中的作用的认识仍然处于起步阶段，需要进一步调查。
Sagar K. Thakkar (1) Angus M. Moodycliffe (1) Myriam Richelle (2). Carotenoids and Skin. Nutrition and Skin[M].DE: springer, 2011: 59-78