Glass transition temperature of trehalose
WebThe water-induced glass transition takes place in the range of 6.5–7 wt%, with aw = 0.35–0.4 in both experiments, followed by the hydration of the metastable liquid with the heat effect close to zero. Crystallization occurs … WebThe glass transition temperature (T g ), enthalpic relaxation behavior, and crystallization were studied by differential scanning calorimetry, whereas X-ray diffractometry was used for phase identification. The rate and extent of water uptake at different relative humidity values were also obtained. Results.
Glass transition temperature of trehalose
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WebGlass transition, as expected, occurred at an intermediate temperature for sucrose-trehalose mixtures. Of the dry samples, only those containing less than 16% treha-lose … 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.
WebJan 4, 2001 · The physical properties of aqueous sucrose near the glass transition temperature have been studied using Monte Carlo and molecular dynamics simulations. The sucrose solutions ranged in concentration from 6 to 100 wt% and in temperature from 300 to 600 K. For concentrated solutions (≥ 80 wt%), a parallel tempering Monte Carlo … WebJun 1, 2002 · The curve fit was found to have a value for k of 1.1, with an estimated Tg of 74 °C for pure trehalose and 44 °C for HES. As k was found to be close to unity, this …
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 … WebSep 2, 2006 · The glass transition temperatures of amorphous trehalose-water mixtures and the mobility of water: an experimental and in silico study. Alexandra Simperler, A. Kornherr, R. Chopra, W. Jones, W. Motherwell, G. Zifferer Materials Science Carbohydrate research 2007 25
WebAug 13, 2007 · Isothermal-isobaric molecular dynamics simulations are used to calculate the specific volume of models of trehalose and three amorphous trehalose-water mixtures …
rosemount high school baseballWebOct 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 … stores in ridge mallWebResults: Aggregation increased with time at -20°C but not at -40°C or -10°C. The cause of the instability was the crystallization of freeze-concentrated trehalose from the frozen … stores in ridgmar mallWebLow hygroscopicity (moisture attraction): Trehalose is free-flowing up to 94% relative humidity. Its low hygroscopicity allows for controlling moisture migration in various applications. High glass transition temperature: … stores in ridgetown ontariohttp://www.bushorchimp.com/s-high-glass-transition-temperature-trehalose-food-grade rosemount high school boys lacrosseWebFeb 6, 2007 · The T g of pure dry trehalose was found to be 106 °C, while sucrose had a T g of 60 °C. Glass transition, as expected, occurred at an intermediate temperature for … rosemount high school band websiteWebThe T g of pure dry trehalose was found to be 106 °C, while sucrose had a T g of 60 °C. Glass transition, as expected, occurred at an intermediate temperature for sucrose-trehalose mixtures. Of the dry samples, only those containing less than 16% trehalose showed sucrose crystallization during scanning. stores in ridge hill