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首页> 外文期刊>Journal of the Science of Food and Agriculture >Preparation and growth-promoting effect of selenium nanoparticles capped by polysaccharide-protein complexes on tilapia
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Preparation and growth-promoting effect of selenium nanoparticles capped by polysaccharide-protein complexes on tilapia

机译：多糖 - 蛋白复合物对罗非鱼裂解硒纳米粒子的制备及生长促进作用

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BACKGROUND Compared with traditional inorganic and organic selenium compounds, nano-selenium exhibited higher biological safety and nutritional potency. However, the biological efficacy of nano-selenium has not been comprehensively and accurately evaluated due to its dispersion instability. RESULTS In this study, novel selenium nanoparticles (SeNPs) with high dispersion stability were successfully prepared using a polysaccharide-protein complex (PSP) as the capping agent. This was isolated from abalone viscera. The average particle size and zeta potential of polysaccharide-protein complex selenium nanoparticles (PSP-SeNPs) were 63.33 nm, and -37.1 mV, respectively. The SeNPs were firmly capped by PSP through Se-O and Se-N bonds, as demonstrated by X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and transmission electron microscopy. Due to this capping, the dispersion of PSP-SeNPs remained stable for 12 months at 4 degrees C, as evidenced by visual inspection and multiple light scattering. Furthermore, PSP-SeNPs imparted an excellent growth-promoting effect on tilapia. The FBW, WGR, and SGR values of tilapia juveniles fed with PSP-SeNPs supplemented diets (0.5-4.5 mg/kg) were significantly higher than those of the control (P< 0.05). A weight gain rate of 4.1%-43.4% and specific growth rate of 0.15%-1.74% were obtained in tilapia during 45-day feeding. CONCLUSIONS The use of marine viscera polysaccharides is a promising, green method for the synthesis of selenium nanoparticles. There are good opportunities for the application of the synthesized PSP-SeNPs in the life sciences. (c) 2020 Society of Chemical Industry
机译：背景与传统的无机和有机硒化合物相比，纳米硒具有更高的生物安全性和营养价值。然而，由于纳米硒的分散不稳定，其生物功效尚未得到全面、准确的评价。结果以多糖-蛋白质复合物（PSP）为封端剂，成功制备了具有高分散稳定性的新型硒纳米颗粒（SENP）。这是从鲍鱼内脏中分离出来的。多糖-蛋白质复合物硒纳米颗粒（PSP-SeNPs）的平均粒径和zeta电位分别为63.33nm和-37.1mV。X射线光电子能谱、傅里叶变换红外光谱和透射电子显微镜表明，SENP通过Se-O和Se-N键被PSP牢牢地封端。由于这种封顶，PSP SeNPs的分散在4摄氏度下保持稳定12个月，这可以通过目视检查和多次光散射来证明。此外，PSP SeNPs对罗非鱼具有良好的促生长作用。添加PSP-SeNPs（0.5-4.5 mg/kg）饲料的罗非鱼幼鱼的FBW、WGR和SGR值显著高于对照组（P<0.05）。在45天的饲养过程中，罗非鱼的增重率为4.1%-43.4%，比生长率为0.15%-1.74%。结论利用海洋内脏多糖制备硒纳米粒是一种有前途的绿色方法。合成的PSP-SeNPs在生命科学中有很好的应用前景。（c） 2020年化学工业学会

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