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Abstract：
In this study, we analysed the potential use of dried strawberry leaves and calyces for the production of nanoparticles using inorganic iron compounds. We used the following iron precursors FeCl3 × 6H2O, FeCl2 × 4H2O, Fe(NO3)3 × 9H2O, Fe2(SO4)3 × H2O, FeSO4 × 7H2O, FeCl3 anhydrous. It was discovered that the content of polyphenols and flavonoids in dried strawberries and their antioxidant activity in DPPH and FRAP were 346.81 µM TE/1 g and 331.71 µM TE/1 g, respectively, and were similar to these of green tea extracts. Microimages made using TEM techniques allowed for the isolation of a few nanoparticles with dimensions ranging from tens of nanometres to several micrometres. The value of the electrokinetic potential in all samples was negative and ranged from -21,300 mV to -11,183 mV. XRF analyses confirmed the presence of iron ranging from 0.13% to 0.92% in the samples with a concentration of 0.01 mol/dm3. FT-IR spectra analyses showed bands characteristic of nanoparticles. In calorimetric measurements, no increase in temperature was observed in any of the tests during exposure to the electromagnetic field. In summary, using the extract from dried strawberry leaves and calyxes as a reagent, we can obtain iron nanoparticles with sizes dependent on the concentration of the precursor.
摘要：
在这项研究中,我们分析了使用无机铁化合物生产纳米颗粒的潜在用途。我们使用以下铁前体FeCl3×6H2O，FeCl2×4H2O,Fe(NO3)3×9H2O,Fe2(SO4)3×H2O,FeSO4×7H2O,无水FeCl3。发现干草莓中多酚和类黄酮的含量及其在DPPH和FRAP中的抗氧化活性分别为346.81µMTE/1g和331.71µMTE/1g，分别,与绿茶提取物相似。使用TEM技术制作的显微图像允许分离一些尺寸从几十纳米到几微米的纳米颗粒。所有样品中的电动电势的值是负的并且范围从-21,300mV至-11,183mV。XRF分析证实在浓度为0.01mol/dm3的样品中存在0.13%至0.92%的铁。FT-IR光谱分析显示了纳米颗粒的特征带。在量热测量中，在暴露于电磁场的任何测试中都没有观察到温度升高。总之,使用草莓干叶子和花萼的提取物作为试剂，我们可以获得尺寸取决于前体浓度的铁纳米颗粒。
