Effect of the drying temperature of cornhusk on glucose and fructose concentration to control the size distribution of silver nanoparticles

This study reports the effect of two different drying temperatures, 40 °C and 105 °C, on the glucose and fructose concentration in water-soluble materials of cornhusk, which were used to synthetize two different silver nanoparticles, AgNpCH40 and AgNpCH105 respectively. The compositional changes in the cornhusk extracts were investigated by means of high-performance liquid chromatography, UV-vis spectroscopy, and attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) and two different commercial kits for the quantification of glucose and fructose. AgNpCH40 presents particles between 70-650 nm and AgNpCH105 between 25-213 nm. ATR-FTIR and glucose and fructose quantification kits evidenced that both monosaccharides were consumed during the reaction. However, fructose tautomerization was favored in synthesis of AgNpCH105, because of alkaline pH. Fructose has lower reducing capability than glucose and its participation in synthesis of AgNpCH105 allowed the formation of a small portion of stable and monodisperse nanoparticles observed by TEM and Nanotracking analysis.