Predicting the Relationship Between Unfrozen Water Fraction and Temperature During Food Freezing Using Freezing Point Depression

1974 ◽  
Vol 17 (1) ◽  
pp. 0063-0066 ◽  
Author(s):  
D. R. Heldman
Keyword(s):  
Freezing Point ◽  
Unfrozen Water ◽  
Freezing Point Depression ◽  
Water Fraction ◽  
Food Freezing ◽  
The Relationship

THE FREEZING POINT OF MILK PRODUCED IN FOUR MARKETS IN TENNESSEE

1966 ◽  
Vol 29 (10) ◽  
pp. 319-322 ◽  
Author(s):  
B. J. Demott
Keyword(s):  
High Temperatures ◽  
Freezing Point ◽  
Weather Conditions ◽  
Vapor Pressures ◽  
Freezing Point Depression ◽  
Seasonal Differences ◽  
High Vapor ◽  
Early Fall ◽  
The Relationship

Summary Seasonal differences occur in the freezing point depression (Δ) of milk produced in Tennessee, A larger Δ occurred in the colder months of the year than in the summer and early fall of 1963 and 1964. Weather conditions were of more significance in the fall and spring than in winter and summer. High temperatures and high vapor pressures were associated with smaller Δ's. The Δ between herds was statistically different, but this difference could not be attributed to the breed of cow in the herd. Producers whose milk had a small average Δ had, in many cases, a great deal of variation in their Δ's. The relationship between quantity of milk sold per producer and Δ is, at most, very slight.

scholarly journals Application of the Generalized Clapeyron Equation to Freezing Point Depression and Unfrozen Water Content

2018 ◽  
Vol 54 (11) ◽  
pp. 9412-9431 ◽  
Author(s):  
Jiazuo Zhou ◽  
Changfu Wei ◽  
Yuanming Lai ◽  
Houzhen Wei ◽  
Huihui Tian
Keyword(s):  
Water Content ◽  
Freezing Point ◽  
Unfrozen Water ◽  
Freezing Point Depression ◽  
Clapeyron Equation ◽  
Unfrozen Water Content

Remember the water - a comment on EPS colligative properties

2001 ◽  
Vol 43 (6) ◽  
pp. 17-23 ◽  
Author(s):  
K. Keiding ◽  
L. Wybrandt ◽  
P. H. Nielsen
Keyword(s):  
Activated Sludge ◽  
Freezing Point ◽  
Published Data ◽  
Freezing Point Depression ◽  
Swelling Properties ◽  
Charged Polymers ◽  
Drying Rates ◽  
The Relationship ◽  
Colligative Properties

The relationship between water and activated sludge components was examined. Reevaluation of published data on freezing point depression, drying rates and dewatering has been performed. The basis of this has been the assumption that the water/sludge relationship is considered to be a colligative effect. Since the results indicate this to be the case, we suggest that the published concepts of “pools of water” are false. Data on swelling properties of EPS as a function of pH suggests that the colligative properties are largely determined by the counterions of charged polymers and surfaces.

scholarly journals Effect of maltodextrin on the freezing point and thermal conductivity of uvaia pulp (Eugenia piriformis Cambess)

2012 ◽  
Vol 36 (1) ◽  
pp. 78-85 ◽  
Author(s):  
Harvey Alexander Villa-Vélez ◽  
Javier Telis-Romero ◽  
Diana Maria Cano Higuita ◽  
Vânia Regina Nicolletti Telis
Keyword(s):  
Experimental Data ◽  
Thermal Conductivity ◽  
Data Acquisition ◽  
Freezing Point ◽  
Data Acquisition System ◽  
Polynomial Equations ◽  
Freezing Point Depression ◽  
Water Fraction ◽  
Initial Freezing ◽  
Simple Equations

The freezing point depression (FPD) of uvaia pulp with and without additives - 10, 16, 22 and 28% of maltodextrin (MD), was measured using a simple apparatus consisting of two major sections: a freezing vessel and a data acquisition system. The thermal conductivity of the pulps was also investigated as a function of the frozen water fraction and temperature using a coaxial dual-cylinder apparatus. Above the initial freezing point, thermal conductivity fitted the polynomial equations well. Below the freezing point, thermal conductivity was strongly affected by both the frozen water fraction and the temperature. Simple equations in terms of the frozen water fraction and temperature could be fitted to the experimental data for freezing point depression and thermal conductivity.

The relationship in the cow between the osmotic pressure of milk and of blood

1965 ◽  
Vol 32 (1) ◽  
pp. 79-88 ◽  
Author(s):  
J. V. Wheelock ◽  
J. A. F. Rook ◽  
F. H. Dodd
Keyword(s):  
Mammary Gland ◽  
Osmotic Pressure ◽  
Freezing Point ◽  
Venous Blood ◽  
Milk Composition ◽  
Milk Secretion ◽  
Freezing Point Depression ◽  
Short Period ◽  
The Relationship ◽  
Slight Alteration

SummarySimilar, marked variations in the freezing-point depressions of jugularvenous blood and of milk throughout a day were observed in cows when drinkingwater was offered for a single, short period each day. Values for milk were found to agree more closely, however, with those for mammary-venous blood than with those for jugular-venous blood. It appears that milk is in osmotic equilibrium with the blood flowing through the udder continuously throughout the period the milk remains within the udder and not only during its formation, and that milk secretion causes a slight alteration in the osmotic pressure of fluids within the immediate locality of the mammary gland. Changes in the milk composition that occurred in association with the observed changes in freezing-point depression were consistent with a movement of water into or out of the udder in response to any change in the osmotic pressure of blood.

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