Abstract
ABSTRACT As an addition to analytical methods, food preference tests represent a new approach in the investigation of food quality. This method was put to a test with common beets from biological and conventional farming systems and with different kinds of bread containing improving or debasing substances (milk thistle, ground sunflower seeds, ergot, undigestible roughages) and different proportions of wheat and rye. Laboratory rats were used as test animals because of their versatile feeding behaviour: rather than restricting themselves to one known food, they will sample every food offered to gather experience and to form optimal feeding habits. For this trial two groups of animals were used: one consisting of rats fed with biologically cultivated products (group A) and one fed with conventionally cultivated products (group B). Animals of both groups significantly preferred biologically grown common beets, but rats of group A exhibited a higher sensitivity in their choice of food. The preference tests w...
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