Biomass Effects and Selenium Accumulation in Sprouts of Three Vegetable Species Grown in Selenium-enriched Conditions
Biomass Effects and Selenium Accumulation in Sprouts of Three Vegetable Species Grown in Selenium-enriched Conditions
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DOI：
10.21273/hortsci.47.4.497
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发表时间：
2012-04-01
期刊：
影响因子：
1.9
通讯作者：
Goldman, Irwin
中科院分区：
文献类型：
--
作者：
Arscott, Sara;Goldman, Irwin
有助于预防疾病的食物越来越受到关注。某些实验性富硒蔬菜以硒-甲基硒代半胱氨酸（MeSeCys）的形式积累硒，这是一种具有上级化学预防特性的非蛋白质氨基酸。以硫（S）为对照，研究了不同浓度硒对花椰菜（Brassica oleracea）、绿豆（Vigna radiata）和洋葱（Allium cepa 'Red creole'）芽生物量和总硒含量的影响。试验1包括127 μ molL（-1）和1270 μ molL（-1）的硒酸盐-Se和硫酸盐-S处理。试验2对花椰菜和绿豆使用635 μ molL（-1）的附加处理，对洋葱使用12，700 μ molL（-1）的附加处理。西兰花和绿豆在第3天和第5天收获芽，洋葱在第5天和第7天收获芽。西兰花是最敏感的硒，在635亩硒GIB减少约45%。绿豆GIB在1，270 μ M Se时降低23%，洋葱GIB在12，700 μ M Se时小幅降低16%，表明硒耐受性高。这些数据清楚地表明，在芽生产过程中的耐受性和硒的吸收物种的变化。最低的治疗水平，127亩M硒酸硒，导致硒浓度超过了新鲜的芽消费所需的水平，这表明硒生物强化芽生产新鲜消费可以很容易地完成，对生长速度或产量的影响不大。所用化学名称：硒酸盐（SeO 42-）硫酸盐（SO 42-）。
Foods that can aid in prevention of disease are of increasing interest. Some vegetables experimentally enriched with selenium (Se) accumulate selenium as Se-methylselenocysteine (MeSeCys), a non-protein amino acid implicated with superior chemopreventive properties. The effects of increasing concentrations of Se on the gain in biomass (GIB) and total Se concentration of broccoli (Brassica oleracea), mung bean (Vigna radiata), and onion (Allium cepa 'Red creole') sprouts were evaluated against sulfur (S) as control. Trial 1 included treatments of selenate-Se and sulfate-S at levels of 127 mu molL(-1) and 1270 mu molL(-1). Trial 2 used additional treatments of 635 mu molL(-1) for broccoli and mung beans and 12,700 mu molL(-1) for onion. Sprouts were harvested at 3 and 5 days for broccoli and mung bean and at 5 and 7 days for onion. Broccoli was the most sensitive to Se, showing approximate to 45% GIB reduction at 635 mu M Se. Mung bean GIB was 23% lower at 1,270 mu M Se and onion GIB showed a small 16% reduction at 12,700 mu M Se, suggesting high Se tolerance. These data clearly demonstrated species variation in tolerance to and uptake of Se during sprout production. The lowest treatment level, 127 mu M selenate-Se, resulted in Se concentrations that exceeded the level desirable for fresh sprout consumption, suggesting that Se-biofortified sprout production for fresh consumption could be easily accomplished with little effect on growth rate or yield. Chemical name used: selenate (SeO42-) sulfate (SO42-).