Protocol detail

Physicochemical Characterization of Freeze-Dried Products

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The physical-chemical properties of all the freeze-dried products have been investigated as reported in [7 (link)]. In detail, the IR spectra in transmittance mode were obtained by a Spectrum One Perkin-Elmer spectrophotometer equipped with a MIRacle™ ATR device in the spectral region of 650–4000 cm⁻¹. Differential Scanning Calorimetry (DSC) analysis was performed by Mettler STARe system equipped with a DSC821e Module and an Intracooler device (Julabo FT 900) for sub-ambient temperature. The residual humidity was investigated by Thermo Gravimetric Analysis (TGA) with a Mettler STARe system equipped with a TGA/DSC1.

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Bari E., Ferrarotti I., Di Silvestre D., Grisoli P., Barzon V., Balderacchi A., Torre M.L., Rossi R., Mauri P., Corsico A.G, & Perteghella S. (2019). Adipose Mesenchymal Extracellular Vesicles as Alpha-1-Antitrypsin Physiological Delivery Systems for Lung Regeneration. Cells, 8(9), 965.

Publication 2019

Spectrum One Perkin-Elmer spectrophotometer MIRacle™ ATR device DSC821e Module FT 900 Mettler STARe system TGA/DSC1

Device Differential scanning calorimetry Freeze Humidity Ir spectra Physical Properties of chemical Thermo gravimetric

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Variable analysis

independent variables

None explicitly mentioned

dependent variables

Physical-chemical properties of freeze-dried products
IR spectra in transmittance mode
Differential Scanning Calorimetry (DSC) analysis
Residual humidity investigated by Thermo Gravimetric Analysis (TGA)

control variables

Spectrum One Perkin-Elmer spectrophotometer equipped with a MIRacle™ ATR device (for IR spectra)
Mettler STARe system equipped with a DSC821e Module and an Intracooler device (Julabo FT 900) (for DSC analysis)
Mettler STARe system equipped with a TGA/DSC1 (for TGA)

positive controls

None mentioned

negative controls

None mentioned

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