ISSN:
1750-3841
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Copper activity was measured by a cupric electrode in 0.1 M sodium acetate-acetic acid buffered (pH 3.2, 4.5, 6.0) and unbuffered sucrose solutions (10% w/v) using the standard addition technique (l–10 ppm of Cu++). In water, the measured copper concentration (activity) was linearly related to the added copper concentration with a slope of unity. The slope decreased in acetate buffer solutions as pH increased indicating that Cu++ was complexed with acetate and to a greater extent at higher pH. In the presence of sucrose, copper activity increased approximately 16% in all solutions. Results suggest that the bulking effect of sucrose and the decreased water activity in solutions produced increased copper activity in sucrose solutions.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2621.1987.tb06653.x
Permalink