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  • 1990-1994  (6)
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Biotechnology progress 10 (1994), S. 220-224 
    ISSN: 1520-6033
    Source: ACS Legacy Archives
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of food science & technology 27 (1992), S. 0 
    ISSN: 1365-2621
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: The phase diagram of the water-sucrose-sodium chloride system was computed from published thermodynamic data. The parameters for modelling the excess Gibbs free energy of the liquid phase in equilibrium with solid pure substances of the water-sucrose-sodium chloride system were evaluated. Published experimental equilibrium data were employed to adjust the parameters of the binary and the ternary systems. The projection of the liquid surface (representing the equilibrium conditions between liquid and ice) on the composition triangle of the ternary system was obtained and the points of the invariant (quasi-peritectic and eutectic) transformations calculated.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 56 (1991), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Fick's second law for unsteady-state, one-dimensional diffusion in solid media from a well stirred solution of limited volume was used to develop mathematical equations for modeling the mass transfer of NaCl in cheeses during salting. A computational method was employed to solve the equations and analyze the suitable conditions for salt penetration in finite cylindrical cheeses. Various volume ratios of solution and solid were considered to determine the variation of NaCl concentration in cheeses. Experimental results were predicted by the proposed mathematical model with less than 10% error.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 59 (1994), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: In a model study we assumed that the cheese is a homogeneous solid with nonuniform initial concentration distributions, cheese surfaces are rendered impermeable after brining, and the generalized Fick's law form is valid for expressing the diffusive fluxes of solutes. NaCl and KCl concentrations at selected positions during distribution in Fynbo cheese kept at 12°C, after salting 10 hr in a brine of 100 g NaCl/L and 100 g KCl/L at the same temperature, were determined experimentally and compared with predicted values with the model at different storage times up to 30 days. Homogeneous distribution of solutes was reached at 20 days ripening, as predicted by the model and verified experimentally.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 59 (1994), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A model considering a ternary diffusion in axial and radial directions of a finite cylindrical solid was developed for predicting NaCl and KCl concentrations in cheese during brining. The generalized Fick's law form, negligible external mass transfer resistance, and an equilibrium between cheese and brine solution were assumed. Cheese samples (12 × 6 cm) were salted in a KCl-NaCl) brine solution. NaCl and KCl concentrations were determined experimentally and theoretically at 5, 10 and 15 hr. The average relative error of the model was higher for KCl than for NaCl and increased with brining time. The model can be applied to systems of similar geometry and conditions provided diffusion constants are known.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food processing and preservation 14 (1990), S. 0 
    ISSN: 1745-4549
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Differential scanning calorimetry (DSC) was employed to determine the freezing and thawing behavior of two strawberry cultivar, Tioga and Florida, since reported thermophysic values for them were not found. Supercooling, complete solidification, minimum incipient melting, maximum incipient melting, and onset temperatures with a reliable range of accuracy were evaluated from DSC curve. the cryoscopic temperature, the most difficult determination from the thermograms, was calculated following a method that used only experimental DSC data. This temperature was dependent on the unbound water and soluble solids concentration, therefore the value obtained for each cultivar was different: -0.78°C for Florida cultivar with 89% of water and -1.41°C for Tioga cultivar with 87% of water. Temperatures were compared with literature values for other strawberry cultivars to analyze the validity of the results.
    Type of Medium: Electronic Resource
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