Scanning electron microscopy (Tescan, Mira3XMU, Brno, Czech Republic) was used to evaluate microparticles’ morphology. SD crickets were put onto stubs and sputtered with carbon under vacuum.
Particle size distribution was determined using dynamic light scattering (Mastersizer 3000E granulometer, Malvern Instruments, Milan, Italy). A suspension of SD crickets was prepared in isopropanol and particle size parameters were obtained.
Using a JASCO 6200 (USA) outfitted with a Ge ATR, Fourier-transform infrared (FT-IR) analysis was carried out. All investigations were carried out between 400 and 4000 cm−1 at a resolution of 2 cm−1, and the software Spectra Manager v2 was used to handle the data.
Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were carried out in ambient air, at a temperature range of 25 to 950 °C, and a heating rate of 10 °C/min, using a TGA/DSC1 instrument (Mettler-Toledo GMBH, Madrid, Spain). After this, 20 mg SD crickets were placed in aluminium sample pans and subjected to characterizations.
Particle size distribution was determined using dynamic light scattering (Mastersizer 3000E granulometer, Malvern Instruments, Milan, Italy). A suspension of SD crickets was prepared in isopropanol and particle size parameters were obtained.
Using a JASCO 6200 (USA) outfitted with a Ge ATR, Fourier-transform infrared (FT-IR) analysis was carried out. All investigations were carried out between 400 and 4000 cm−1 at a resolution of 2 cm−1, and the software Spectra Manager v2 was used to handle the data.
Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were carried out in ambient air, at a temperature range of 25 to 950 °C, and a heating rate of 10 °C/min, using a TGA/DSC1 instrument (Mettler-Toledo GMBH, Madrid, Spain). After this, 20 mg SD crickets were placed in aluminium sample pans and subjected to characterizations.