<p>Common and important cosolutes of whey proteins include NaCl, CaCl and NaCl at pH 3.0 and 7.0. In the first study, the dynamic surface tension of at levels up to 0.1 M increased the initial rate of adsorption due to a reduction of the electrostatic barrier to protein adsorption. The effect of lactose concentration was minimal.For the second study, the addition of CaCl when compared to equivalent concentrations of NaCl. At pH 3.0, neither salt at any concentration significantly affected yield stress; however, overrun was generally higher at pH 3.0 as compared to pH 7.0. The relationship between overrun and surface tension with yield stress as predicted by a previously described theoretical model did not hold for this data. Specific divalent cationic effects were thought to be partially responsible for improved yield stress values. Dynamic surface tension measurements of the foaming solutions lent credence to this ion specific hypothesis. <P>
| Identifer | oai:union.ndltd.org:NCSU/oai:NCSU:etd-20020320-182503 |
| Date | 25 March 2002 |
| Creators | Davis, Jack Parker |
| Contributors | E. Allen Foegeding, Brian Farkas, Jan Genzer |
| Publisher | NCSU |
| Source Sets | North Carolina State University |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://www.lib.ncsu.edu/theses/available/etd-20020320-182503 |
| Rights | unrestricted, I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to NC State University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. |
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