The thermal properties of the PECs were evaluated using differential scanning calorimeter (EVO 131, SETARAM Instrumentation, France). The samples were prepared by weighing accurately 5-6 mg of sample and crimped in aluminum crucibles with a pin holed lid and heated in the range of 40–400°C at a heating rate of 10°C min−1 under a purge of nitrogen at rate of 30 mL/min.
Evo 131
Manufactured by Setaram
Sourced in France
The EVO 131 is a multi-functional laboratory instrument designed for thermal analysis. It is capable of performing differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) simultaneously on a single sample. The EVO 131 provides accurate measurement and analysis of thermal properties of materials.
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6 protocols using evo 131
1
Thermal Properties Evaluation of PECs
2
Comprehensive Characterization of Synthesized Powders
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All synthesized powders were analyzed by X-ray powder diffraction (XRPD) in a range of 10–70° (Philips PW 1050); Fourier-transform infrared spectroscopy (FTIR) in the spectral range from 400 to 4000 cm−1 (Nicolet iS10 FTIR Spectrometer, Thermo Scientific, Madison, MI, USA); thermogravimetric analyses (TG/DTA, DSC), up to 500 °C, with a heating rate of 10 °C/min in air atmosphere (SETSYS Evolution 24,000 Setaram Instrumentation, Cailure, France); differential scanning calorimetry up to 250 °C, with heating rate of 10 °C/min in N2 atmosphere (Evo 131 Setaram Instrumentation, Cailure, France); and field-emission scanning electron microscopy (Carl Zeiss ULTRA Plus FESEM, Oberkochen, Germany).
3
Thermal Analysis of Zein-Based Nanoparticles
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A differential scanning calorimeter (EVO 131, Setaram Instrumentation, Savoie, France) was employed to analyze the thermal properties of zein, GA and EGCG-loaded complex nanoparticles. During the experiment, the nitrogen flow was 20 mL/min, the heating rate was 10 °C/min in the range of 30~200 °C.
4
Thermal and Structural Analysis of Whey Protein Complexes
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β-Lg, GA and β-Lg−GA complex powders (2.5 mg) were weighed and used for analysis by DSC (Evo 131, Setaram Instrumentation, France) with an incremental temperature increase of 10 °C/min within the range from 20 °C to 200 °C. An appropriate amount of β-Lg, GA or β-Lg−GA complex solid powders was taken, mixed and grinded with potassium bromide (1/100, w/w) and made into pellets. Then, they were compressed to form transparent slices in the mold. Each sample was scanned for 32 times by an FTIR spectrometer (Nicolet iS5, Thermo Fisher Scientific) at a resolution of 4 cm−1 in the wavelength range of 4000–400 cm−1 at room temperature.
5
Determining SPS Initiation Temperatures
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SPS initiation temperatures were measured using DSC (EVO 131; Setaram Instrumentation, France) for different SPS concentrations (0.1, 0.3, 0.5, 0.7, 1, and 2%) with five repetitions. Samples were sealed in a 120 µl disposable cuvette, heated at 30 °C min−1 to 130°C, and cooled at the same rate. Initiation temperatures were analyzed from the DSC heating thermograms.
6
Thermodynamic and Spectroscopic Analysis of Piperine-Succinic Acid Cocrystal
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The thermodynamic properties of piperine, succinic acid, and the cocrystal were measured using a DSC apparatus (SETARAM Type EVO-131, Lyon, France), which was calibrated using indium. Approximately 5 mg of each sample was placed in an aluminum pan, and the temperature was increased from 50 • C to 250 • C at a rate of 10 • C/min. Fourier Transform-Infrared Spectroscopy Analysis Intermolecular interactions were studied using a FT-IR spectrophotometer (Perkin Elmer FT-IR, USA). The sample was mixed with dry potassium bromide in a weight ratio of 1:100, and this mixture was compressed into pellets. The absorption of samples was recorded between 4000 cm -1 and 600 cm -1 . The analysis was performed for intact piperine, intact succinic acid, and the cocrystal.
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