Abstract: The present invention relates to a new butter and a process for preparing same comprising: (a) grinding and mixing the starting ingredients, and (b) heat treatment at a temperature comprised between 70-150° C., wherein the starting ingredients comprise: (i) a fat selected from among cream, butter, anhydrous milk fat and mixtures thereof and (ii) at least one additive selected from the group of stabilizers, thickeners, texturing agents, emulsifiers and mixtures thereof. The invention also relates to a process for packaging the butter in a package, such as a spray type container, or a tube type container, or a dispensing package with a membrane stopper, as well as the packaged butter obtained.

Abstract: The invention relates to a method and a device for the early detection of the presence of micro-organisms in food, particularly in milk and derivatives thereof. One of the main advantages of the invention lies in the fact that the aforementioned detection method can be performed inside the commercial packaging thereof without the need for said packaging to be opened. The presence of micro-organism is detected, before they can produce drastic changes in the physical properties of the product, according to changes in the propagation of elastic waves (velocity, attenuation and harmonic distortion) through the product and, moreover, different types of micro-organisms can be distinguished. The inventive detection method is performed under dry conditions and requires an environment with controlled humidity and temperature.