Suzhou Key Laboratory of Green Chemical Engineering, School of Chemical and Environmental Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
State Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
Int J Biol Macromol. 2022 Jan 1;194:17-23. doi: 10.1016/j.ijbiomac.2021.11.091. Epub 2021 Nov 22.
Selenium (Se) is an essential trace element for human beings and animals. Traditional plant Se enrichment technology suffers from selenium pollution. Herein, environmentally friendly Se-agarose (Se-Agar) hybrid hydrogels are prepared by simply mixing agar with different Se species including selenocarrageenan (SeCA), selenite and Se yeast under heating and stirring for 0.5 h without any other reagent. Such Se-Agar hybrid hydrogels with excellent biocompatibility were used as natural substrates for the cultivation of Se-enriched mung bean sprouts. Compared with Se yeast, SeCA and selenite show a better Se enrichment effect on mung bean sprouts. Furthermore, the growth indices including plant weight and plant height of mung bean sprouts were investigated with different concentrations and sources of Se. Notably, the Se-Agar hybrid hydrogels could be easily regenerated and reused for multiple cycles. The results indicated that Se-Agar hybrid hydrogels as recyclable natural substrates offer a simple, sustainable and affordable strategy for plant Se enrichment.
硒（Se）是人类和动物必需的微量元素。传统的植物富硒技术存在硒污染的问题。本研究通过加热搅拌 0.5 h 将琼脂与不同硒物种（包括硒卡拉胶（SeCA）、亚硒酸盐和硒酵母）简单混合，无需任何其他试剂，制备了环保的硒琼脂（Se-Agar）杂化水凝胶。这种具有良好生物相容性的 Se-Agar 杂化水凝胶可用作富硒绿豆芽的天然基质。与硒酵母相比，SeCA 和亚硒酸盐对绿豆芽的富硒效果更好。此外，还研究了不同浓度和来源的硒对绿豆芽生长指标（包括植物重量和株高）的影响。值得注意的是，Se-Agar 杂化水凝胶可轻松再生并重复使用多次。结果表明，作为可回收的天然基质的 Se-Agar 杂化水凝胶为植物富硒提供了一种简单、可持续和经济实惠的策略。
