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Biologically active composite based on fumed silica and Anoectochilus formosanus Hayata extract

机译：生物活性复合基于熏提取

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摘要

Biologically active extract was obtained from the leaves of Anoectochilus formosanus Hayata plants grown in vitro, and the composite was prepared by adsorption/precipitation of this extract components on the fumed silica surface under fluidized bed conditions. The composite was characterized by means of ultraviolet–visible and Fourier transform infrared spectroscopy, thermogravimetric analysis–derivative thermogravimetric analysis, scanning electron microscopy, and nitrogen adsorption method. Antioxidant properties of the extract and the composite were studied using Folin–Ciocalteu method and 2,2-diphenyl-1-picrylhydrazyl (DPPH) test; nitric oxide radical and hydroxyl radical scavenging activities of the extract and the composite were also evaluated. It was shown that adsorption/precipitation of phytochemicals does not significantly affect the texture of silica powder, while the presence of silica does not reduce the antioxidant ability of the extract components. At the same time, inclusion in the composite was found to provide bioactive substances with elongated effect and enhanced storage stability; caking resistance of silica particles was improved, as well.
机译：生物活性提取得到的生长在体外,复合制备吸附/沉淀提取气相法白炭黑表面的组件流化床条件。通过紫外和特点傅里叶变换红外光谱学热重量analysis-derivative热重分析、扫描电子显微镜和氮吸附法。抗氧化剂的提取和属性使用Folin-Ciocalteu复合材料进行了研究方法2,2-diphenyl-1-picrylhydrazyl (DPPH)测试;的提取和净化活动复合材料也被评估。吸附/沉淀的植物化学物质不明显影响硅的纹理粉,硅的存在并不减少提取物的抗氧化能力组件。提供生物活性复合材料被发现物质与细长的效应和增强贮存稳定性;提高粒子。

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