Glass transition temperature of trehalose
WebJun 1, 1998 · In addition, we estimated the following parameters of the mannitol glass from the width of glass transition using the results of Moynihan ( J. Am. Ceram. Soc. 1993, 76 ,1081) and Angell ( J. Phys. Chem. 1994, 98 ,13780): Δ H * (at Tg onset) = 103 kcal/mol, D = 11, and T0 = 222 K. WebNotably, the glass transition temperature for trehalose is significantly higher than other disaccharides such as sucrose, with a difference of ∼50° C in T g between the two. (26) Several molecular mechanisms have been proposed to explain the extraordinary …
Glass transition temperature of trehalose
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WebSep 12, 2024 · At the glass transition temperature, the physical nature of the material changes subtly. It goes from being a rubbery, flexible material at higher temperature, above the glass transition, to a glassy, harder material at a lower temperature. The material is still a solid either way, but there is a definite change in how it responds to stimuli. WebPurpose. To address the lack of fundamental thermophysical data for trehalose and its aqueous systems by measuring equilibrium and non-equilibrium properties of such systems. Methods/Results. Differential scanning calorimetry (DSC) and dynamic mechanical analysis were used to measure glass transition temperatures of trehalose and its solutions. X …
WebJan 1, 1994 · The lower Fw of the BaAFP-1 dough also confirmed the speculation that the higher Capp of the post-frozen BaAFP-1 dough may be caused by its higher unfreezable water content. The glass transition temperature is the point at which the maximally freeze-concentrated matrix was formed (Reid, Kerr, & Hsu, 1994). Tg″ plays a decisive role in … WebThe glass transition temperature of mixtures of trehalose and hydroxyethyl starch. download . FREE Custom List . Kol stands for Key Opinion Leader. Therapeutic areas. …
WebDec 1, 2013 · The effects of trehalose and ultrasound-assisted osmotic dehydration on the glass transition temperature (T g ′) and the state of water in broccoli were analyzed by … WebJan 1, 2024 · The glass transition temperature is lower in Lys + Sucr (25°C) than in Lys + Treh (30°C) sample, as we would expect considering the lower T g of sucrose (T g = 75°C) relatively to T g of trehalose (118°C). 42, 43, 44 The difference between T g of Lys + Sucr and Lys + Treh matrixes, however, is very low (5°C) regarding the difference ...
WebOct 28, 1999 · The glass transition temperature (Tg) and viscosity of aqueous trehalose and its mixtures with either NaCl or Na2B4O7 (borax) have been measured over a wide …
Webeffective in vitro cryoprotectant than trehalose (Crowe et al., 1994). A wide range of glass transition temper-atures of amorphous trehalose has been reported (79 C eka beka kori boi juwa noditeakpeak metall 3d modelWebAug 13, 2007 · Isothermal-isobaric molecular dynamics simulations are used to calculate the specific volume of models of trehalose and three amorphous trehalose-water mixtures … teakoreWebTrehalose is a white, odorless powder with relative sweetness 45% that of sucrose. It is a bisacetal, nonreducing homodisaccharide in which two glucose units are linked together in a α-1,1-glycosidic linkage (α-d-glucopyranosyl-α-d-glucopyranoside; mycose, mushroom sugar). Some of the properties of trehalose are listed in Table I. teakplankorWebSep 2, 2010 · Trehalose is a naturally occurring disaccharide consisting of two α-glucose units. Due to its exceptional physical and chemical stability, trehalose is a popular lyoprotectant. In contrast to other disaccharides, amorphous trehalose is characterized by a high glass transition temperature (~117°C) (14,15). teakrooWebSep 1, 2005 · The Tg of pure dry trehalose was found to be 106 °C, while sucrose had a Tg of 60 °C. Glass transition, as expected, occurred at an intermediate temperature for … eka bilvam shivarpanamWebJul 8, 2016 · Among the lyo-protective sugars, trehalose is the most commonly used due to its high glass transition temperature (T g) and the exceptional capability of hydrogen-bonding with biomacromolecules 2. eka boga inti ciracas