Department of Analytical Chemistry and Physical Chemistry, Universidade Federal do Ceará, 60455-760 Fortaleza, CE, Brazil.
Embrapa Agroindústria Tropical, Dra Sara Mesquita St., 2270, 60511-110 Fortaleza, CE, Brazil.
Food Chem. 2022 Mar 15;372:131207. doi: 10.1016/j.foodchem.2021.131207. Epub 2021 Sep 22.
Se is an essential element in mammals. We review how its bioavailability in soil and the ability of plants to accumulate Se in foods depends on the soil Se profile (including levels and formats), besides to describe how the various selenoproteins have important biochemical functions in the body and directly impact human health. Owing to its favorable characteristics, the scientific community has investigated selenomethionine in most nut matrices. Among nuts, Brazil nuts have been highlighted as one of the richest sources of bioavailable Se. We summarize the most commonly used analytical methods for Se species and total Se determination in nuts. We also discuss the chemical forms of Se metabolized by mammals, human biochemistry and health outcomes from daily dietary intake of Se from Brazil nuts. These findings may facilitate the understanding of the importance of adequate dietary Se intake and enable researchers to define methods to determine Se species.
硒是哺乳动物必需的元素。我们综述了土壤中硒的生物可利用性以及植物在食物中积累硒的能力取决于土壤硒的状况（包括含量和形态），并描述了各种硒蛋白在体内具有重要的生化功能，直接影响人类健康。由于其优良的特性，科学界已在大多数营养基质中研究了硒代蛋氨酸。在坚果中，巴西坚果已被突出为生物可利用硒的最丰富来源之一。我们总结了在坚果中测定硒形态和总硒最常用的分析方法。我们还讨论了哺乳动物代谢的硒化学形式、人类生物化学和从巴西坚果日常饮食中摄入硒对健康的影响。这些发现可以帮助人们了解充足的膳食硒摄入的重要性，并使研究人员能够确定测定硒形态的方法。
