Biosynthesis of metal nanoparticles and their testing on flax seeds

N. Lyubimova, G. Rabinovich
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Abstract

This work sets out to investigate a green-synthesized biopreparation produced by introducing iron or copper nanoparticles into a microbial liquid-phase biological product (LBP). The obtained nanoparticles were analyzed by diffuse reflectance IR spectroscopy and introduced into the LPB at the stage of its ripening in the LPB:particle solution volume ratio of 50:1. As a result, two new biopreparations – LPB-Fe and LPB-Cu – were obtained. All LPB samples, as well as iron and copper nanoparticles, underwent laboratory testing on flax seeds of Tverskaya variety. Iron or copper nanoparticles in the composition of biological preparations were found to affect positively the process of seed germination. In the LPB-Fe variant, seed germination ranged between 86–91%, which exceeded that in the control by 3–12%. In the LPB-Cu variant, seed germination ranged between 86–93%, which exceeded that in the control by 3–11%. However, in the latter variant, the maximum average length per seedling was 14.5–14.8 cm. The average length per seedling was significantly affected by watering the seeds with a solution containing only iron nanoparticles, with the maximum value of this parameter reaching 16.1±1.2 cm. According to the results obtained, this research direction has good prospects and requires additional experiments by varying the nanoparticle concentration in LBPs.
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金属纳米粒子的生物合成及其在亚麻籽上的试验
本研究旨在通过将铁或铜纳米颗粒引入微生物液相生物制品(LBP)来研究一种绿色合成的生物修复材料。采用漫反射红外光谱对制备的纳米颗粒进行分析,并在LPB与颗粒溶液体积比为50:1的条件下将其引入成熟阶段的LPB中。结果得到了两种新的生物修复材料——LPB-Fe和LPB-Cu。所有LPB样品以及铁和铜纳米颗粒都在特维尔卡亚品种的亚麻种子上进行了实验室测试。铁或铜纳米颗粒在生物制剂组成中被发现对种子萌发过程有积极的影响。在LPB-Fe变异中,种子发芽率在86-91%之间,比对照高3-12%。LPB-Cu变异的种子发芽率在86 ~ 93%之间,比对照高3 ~ 11%。而后者的最大平均幼苗长度为14.5 ~ 14.8 cm。仅含铁纳米粒子的溶液对幼苗的平均长度有显著影响,该参数的最大值为16.1±1.2 cm。根据所获得的结果,该研究方向具有良好的前景,需要通过改变lbp中纳米颗粒的浓度来进行进一步的实验。
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