摘要
硒是人体生长发育所必需的微量元素,对我国不同地区农作物硒含量及形态的探究将为居民膳食补硒提供科学依据。对我国不同地区水稻及五种常见农作物中的硒含量进行对比研究,发现:富硒地区土壤及水稻硒含量普遍较非富硒地区高,且土壤硒含量对水稻植株硒的组织分布有影响;市售精米经淘洗后,糊粉层硒含量显著高于淘洗后精米;五种常见农作物中硒含量呈现马铃薯 】花生 ≈ 黑豆 】甘薯 】黄豆的趋势。继而对三种富硒农产品进行形态分析,发现有机硒(尤其是硒代蛋氨酸)均为主要形态,且不同农产品的硒形态分布有所不同,富硒稻米中有机硒占总硒的比例显著高于马铃薯和甘薯。
Selenium (Se) is an essential trace element for human growth and development. Studies on Se content and species of crops produced from different regions can provide scientific information to residents for supplement of Se via daily diets. In the present study, firstly, we compared the Se content in rice plant and other five crops growing in different regions. It was observed that soil and rice plant growing in Se-enriched regions were generally higher than in other regions, and the Se content in soil could impact the distribution of Se in rice plant. The Se content in obtained aleurone was significantly higher than in washed commercial rice. The Se content in five common crops showed the trend of potato >peanut ≈ black bean >sweet potato >soybean. We then further investigated the Se species in three Se-enriched crops, and found that organic Se (especially selenomethionine) was the dominant form. Moreover, the Se species varied with different crops and the ratio of organic Se in total Se was significantly higher in Se-enriched rice than in potato and sweet potato.
出处
《环境保护前沿》
2021年第2期329-337,共9页
Advances in Environmental Protection
