Abstract
ABSTRACTThree instrumental techniques, cone penetrometry, probe penetration and Instron TPA, were compared as means to describe butter spreadability. A factorial experiment was set up to examine the consistency of winter and summer butter, mechanically worked and unworked, before and after storage and at two measurement temperatures, 5° C and 15° C. Probe penetration provided useful information on the relaxation behavior of butter, as well as contributing to the fundamental knowledge of butter structure. The Instron TPA has the advantage of a link with an internationally recognized system of texture analysis. The technique was also found to show greatest potential as a method to assess the effectiveness of mechanical treatment of butter. Cone penetrometry results were converted to yield values and in conjunction with Haighton's ready reckoner scale of assessment provided a simple and rapid method to describe butter spreadability.
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