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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 31 (1983), S. 443-444 
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 47 (1982), 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: Rheological properties of heat-induced gels from egg albumen and bovine plasma proteins were measured using a mechanical loading device. Each protein was tested at 8% protein concentration and heated for 0–120 min at 80°C in an agitating water bath. After heating, the viscosity index, apparent elasticity and initial penetration force of the gels were evaluated. Bovine plasma protein dispersions exhibited a substantially higher viscosity index, apparent elasticity and initial penetration force than egg albumen gels. Bovine plasma proteins produced a gel structure which was strong and elastic. By comparison, heat-induced gels of egg albumen proteins were fragile and somewhat brittle.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 44 (1979), 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: Cow meat and U.S. Choice or Good beef plates were used to make 20 ground beef formulations. One batch contained only beef (control), 9 batches contained beef and TSP (one of three brands at one of three substitution levels), 1 batch contained beef and PPI, and 9 batches contained both TSP and PPI. Brand of TSP affected color of the raw patties and appearance and dimensional shrinkage of cooked patties, with direction and extent of effects on raw patty color and cooked patty dimensions being determined by the interaction of TSP brand with level of TSP substitution and/or use of PPI. Addition of 1% PPI improved (P 〈 0.05) the texture, flavor and palatability of patties and increased (P 〈 0.05) the cohesiveness of cooked patties (as measured by force and area under the deformation curve), irrespective of brand or substitution level of TSP. The effect of addition of 1% PPI on texture and appearance of raw patties and on weight loss and dimensional shrinkage of cooked patties was a function of the combined effects of brand of TSP, percentage of TSP and use of PPI. In general, however, use of 1% PPI was not able to negate most of the undesirable effects of 20% or 30% TSP addition.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 41 (1976), 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 Maillard complex of bovine serum albumin and D-glucose was prepared by equilibrating a freeze-dried mixture of the protein and sugar at 52% relative humidity followed by heating at 55°C for 18 hr. No visible brown pigmentation was observed in the resulting powder. An 80% reduction in free amino groups was measured during the heating period. Solutions of the protein and the protein-sugar complex were heated for 30 min at temperatures ranging from 60–100°C. The heated albumin was insoluble at the isoelectric pH while the albumin-glucose complex maintained solubility over a pH range of l-7. Increases in levorotation due to heat treatment were similar for the protein and the protein-sugar complex. These results indicate that the complexing of bovine serum albumin with D-glucose increases the stability of the protein by protection against precipitation of the denatured molecules rather than protection against changes in internal configuration.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 38 (1973), 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: Blood protein concentrates were prepared from the serum and decolorized hemoglobin fractions of bovine blood. The emulsifying capacity of the concentrates was dependent on protein concentration and was not affected by spray drying. However, when the serum protein fraction was subjected to the decolorization treatment, its emulsifying capacity was reduced. Lactose, when added to the serum proteins prior to spray drying, prevented this reduction.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Ground beef with added beef plasma protein concentrate was evaluated mechanically and organoleptically to measure the effect on the binding forces in the cooked meat. The meat patties were cooked, cooled and tested in a constant loading rate, pneumatically operated testing machine with output fed into an X-Y plotter. From the force-deformation curves, the following values were determined: (1) force, stress and deformation at the bioyield point; (2) area under the curve to represent work performed; (3) initial tangent modulus; (4) tangent modulus; and (5) secant modulus. A special holding device was developed to permit tension loading of the patties at a rate of 5 cm/min until rupture of the meat occurred. Treatments consisted of: (1) all meat (control); (2) addition of 1% plasma protein; (3) 2% plasma protein added; (4) addition of 1% plasma protein rehydrated to equivalent moisture content of control; and (5). addition of 2% plasma protein rehydrated to equivalent moisture content of control. Treatments 2, 3, 4 and 5 were significantly higher (P 〈 0.01) than the control group for force and stress at bioyield and area under the curve. Significant differences (P 〈 0.05) among treatments were obtained for deformation at bioyield and tangent modulus. Companion samples from the above treatments were evaluated for elasticity and toughness by a taste panel. The sensory panel ratings for toughness were significantly and positively correlated (P 〈 0.01) with values obtained in the mechanical tests for force at bioyield point, tangent modulus and area under the curve. Sensory evaluations for the elasticity property of the patties were not significantly influenced by the formulation treatments nor was elasticity (sensory panel rating) sigkcantly associated with the mechanical properties considered in the current study.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 39 (1974), 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
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 40 (1975), 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
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 47 (1982), 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: Two groups of eggs were stored at 15°C for 0, 5 and 10 days. One group was stored, with the shell removed, in sterile Whirl-Pak bags. A second group was stored as intact whole eggs. Viscosity index, apparent elasticity, and initial penetration force were determined for heat-induced (80°C, 80 min) gels of the thick, thin and mixed albumens from each group. The rheological parameters increased with storage time, with the greater increase exhibited by the gels of the albumens that were stored as shell eggs. Solution pH was a major factor controlling these rheological properties of heated egg albumen.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 43 (1978), 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: Changes in rheology during the heating of bovine plasma protein suspensions were examined at temperatures between 50°C and 90°C and for concentrations ranging from 6-12% protein isolate over a 3-hr period. An annular pumping device was used to determine a viscosity index for the suspensions. A model was developed to explain the data. The viscosity index increased exponentially with time at a particular temperature while being linearly dependent upon the concentration. The Arrhenius Equation described the effect of temperature on the rate of change of the viscosity index during heating.
    Type of Medium: Electronic Resource
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