¶ … growing demand for functionally superior protein gives us an excellent opportunity for endeavoring to improve the foaming properties of whey protein isolates (WPI) is dairy companies. There are several factors that effect the foaming properties of whey protein isolate. These include the following:
internal elements amino acid composition and sequence other structures inherent to the WPI
hydrophobic / hydrophilic character of the WPI surface the overall charge and the distribution of the charge the flexibility or rigidity of the protein itself
External elements ionic strength ph (i..e level of the acidity or basicity of the solution)
temperature its interaction with other food components
Reviews of attempted improvements of the WPI show that they have been affected by isolation (Ludwig et al., 1995). When Morr and Ha (1993) studied the foaming properties of WPI, he distinguished them into four kinds and found differences . His four kinds were (a) pasteurized acid casein whey (b) non-pasteurized acid casein whey © Cheddar cheese whey using ultra filtration and (d) Cheddar cheese using spray-drying process. The differences that he discovered in the foaming properties, he concluded, were due to the differences in their protein and non-protein structure as well as to differences in the structural state of the protein.
There are also studies (reviewed by Zhu & Damodaran, 1994) that show that WPI boiled at moderate temperature shows better and improved foaming than it does at intense temperatures. The studies were condensed and brief with no explanation given for the outcome. Rather, it seems to have been intuitively understood that changes seen were due to the internal and...
Christian Biotechnology: Not a Contradiction in Terms Presented with the idea of "Bioethics" most people in the scientific community today immediately get the impression of repressive, Luddite forces wishing to stifle research and advancement in the name of morality and God. Unfortunately, this stereotype too often holds true. If one looks over the many independent sites on the Internet regarding bioethics, reads popular magazines and publications, or browses library shelves for
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