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  • 1
    Electronic Resource
    Electronic Resource
    Interaction of alkaline earth metal ions with polyphosphates and citrate in the presence and absence of casein (1967)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 15 (1967), S. 403-407 
    Details
    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
    URL: http://dx.doi.org/10.1021/jf60151a001
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The Ionization Behavior of Some Poly (Meta) Phosphates Used in Food Products (1965)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 30 (1965), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The degree of ionization of some sodium polyphosphates used in the food industry was determined with sodium ion electrodes. The effect of the presence of the calcium ion on the ionization of these phosphates was also studied. Sodium orthophosphate completely dissociated in solution, with the degree of dissociation of the polyphosphates inversely proportional to the number of P atoms in the chain or the ring. The addition of calcium enhanced the dissociation of the polyphosphate and lowered the pH in each case.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1965.tb01783.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The complexing of calcium by citrate, ortho- and polyphosphates (1965)
    Springer
    European journal of nutrition 5 (1965), S. 183-186 
    Details
    ISSN: 1436-6215
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Notes: Summary The calcium ion complexing ability of orthophosphates, polyphosphates and citrate was determined by measuring free calcium ions in mixtures of these salts and calcium chloride. Primary and secondary orthophosphates showed no calcium complexing ability; sodium citrate, sodium hexametaphosphate, sodium tripolyphosphate and sodium tetra phosphate were effective calcium complexing agents and the pK values in the presence of sodium chloride and of tetraethylammonium bromide were determined. All pK values were higher in the absence of sodium ions indicating a competitive effect of the sodium ion. The lack of calcium complexing ability of ortho-phosphate could also be demonstrated by a cryoscopic technique.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02021223
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    Paper (German National Licenses)
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