Merits and Limitations of Dynamic Vapor Sorption Studies on the Morphology and Physicochemical State of Freeze-Dried Products

2018 ◽  
Vol 107 (8) ◽  
pp. 2179-2191 ◽  
Author(s):  
Claudia Kunz ◽  
Henning Gieseler
Keyword(s):  
Vapor Sorption ◽  
Dynamic Vapor Sorption ◽  
Freeze Dried ◽  
Physicochemical State

scholarly journals Quantification of accessible hydroxyl groups in cellulosic pulps by dynamic vapor sorption with deuterium exchange

Cellulose ◽  
2018 ◽  
Vol 25 (12) ◽  
pp. 6923-6934 ◽  
Author(s):  
Saija Väisänen ◽  
Raili Pönni ◽  
Anna Hämäläinen ◽  
Tapani Vuorinen
Keyword(s):  
Deuterium Exchange ◽  
Hydroxyl Groups ◽  
Vapor Sorption ◽  
Dynamic Vapor Sorption

scholarly journals Effect of Solid Forms on Physicochemical Properties of Valnemulin

Crystals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 675 ◽  
Author(s):  
Jinbo Ouyang ◽  
Jian Chen ◽  
Limin Zhou ◽  
Fangze Han ◽  
Xin Huang
Keyword(s):  
Organic Acids ◽  
Physicochemical Properties ◽  
Excess Enthalpy ◽  
Vapor Sorption ◽  
Dynamic Vapor Sorption ◽  
Scanning Calorimetry ◽  
Intrinsic Dissolution ◽  
X Ray ◽  
Ft Ir ◽  
Scanning Electron

To improve the physicochemical properties of valnemulin (VLM), different solid forms formed by VLM and organic acids, including tartaric acid (TAR), fumaric acid (FUM), and oxalic acid (OXA), were successfully prepared and characterized by using differential scanning calorimetry (DSC), scanning electron microscope (SEM), X-ray powder diffraction (XRPD), and Fourier-transform infrared spectroscopy (FT-IR). The excess enthalpy Hex between VLM and other organic acids was calculated by COSMOthermX software and was used to evaluate the probability of forming multi-component solids between VLM and organic acids. By thermal analysis, it was confirmed that multi-component solid forms of VLM were thermodynamically more stable than VLM itself. Through dynamic vapor sorption (DVS) experiments, it was found that three multi-component solid forms of VLM had lower hygroscopicity than VLM itself. Furthermore, the intrinsic dissolution rate of VLM and its multi-component forms was determined in one kind of acidic aqueous medium by using UV-vis spectrometry. It was found that the three multi-component solid forms of VLM dissolved faster than VLM itself.

Water Dynamics in Egg White Peptide, Asp-His-Thr-Lys-Glu, Powder Monitored by Dynamic Vapor Sorption and LF-NMR

2016 ◽  
Vol 64 (10) ◽  
pp. 2153-2161 ◽  
Author(s):  
Shuailing Yang ◽  
Xuye Liu ◽  
Yan Jin ◽  
Xingfang Li ◽  
Feng Chen ◽  
...  
Keyword(s):  
Egg White ◽  
Water Dynamics ◽  
Vapor Sorption ◽  
Dynamic Vapor Sorption ◽  
Lf Nmr
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