Selenium biofortification of broccoli and carrots grown in soil amended with Se-enriched hyperaccumulator Stanleya pinnata
Selenium biofortification of broccoli and carrots grown in soil amended with Se-enriched hyperaccumulator Stanleya pinnata
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DOI：
10.1016/j.foodchem.2014.06.071
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发表时间：
2015-01-01
期刊：
影响因子：
8.8
通讯作者：
Freeman, John L.
中科院分区：
文献类型：
--
作者：
Banuelos, Gary S.;Arroyo, Irvin;Freeman, John L.
利用硒超富集植物源硒改良土壤，可提高世界缺硒地区粮食作物的硒含量。在这项研究中，我们评估了总硒和硒的不同化学形态的西兰花和胡萝卜生长在土壤中修订的硒超富集植物Stanleya羽叶地上部。随着S.羽叶，总植物硒浓度增加到营养理想的水平内可食用的部分。水提取物中的硒化合物进行了分析，SAX-HPLC-ICPMS，并确定为各种主要的有机硒的形式。结合硒的K边X射线吸收近边结构（XANES）分析，对花椰菜小花、胡萝卜根和芽进行了研究。pinnata和种植后的改良土壤中，我们证明了富硒S。pinnata是一种有价值的土壤改良剂，可以使花椰菜和胡萝卜富含健康形式的有机硒。爱思唯尔有限公司出版
Amending soils with Se-hyperaccumulator plant derived sources of selenium (Se) may be useful for increasing the Se content in food crops in Se-deficient regions of the world. In this study we evaluated total Se and the different chemical species of Se in broccoli and carrots grown in soils amended with ground shoots of the Se-hyperaccumulator Stanleya pinnata. With increasing application rates of S. pinnata, total plant Se concentrations increased to nutritionally ideal levels inside edible parts. Selenium compounds in aqueous extracts were analyzed by SAX-HPLC-ICPMS and identified as a variety of mainly organic-Se forms. Together with bulk Se K-edge X-ray absorption near-edge structure (XANES) analysis performed on broccoli florets, carrot roots and shoots, dried ground S. pinnata, and the amended soil at post-plant, we demonstrate that Se-enriched S. pinnata is valuable as a soil amendment for enriching broccoli and carrots with healthful forms of organic-Se. Published by Elsevier Ltd.