Method and plant for treating biological liquids, particularly milk and its derivates
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United States of America Patent
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Issued Date -
Nov 17, 2005
app pub date -
Dec 6, 2004
filing date -
Jul 24, 2002
priority date (Note) -
Abandoned
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Abstract
Method for treating unpackaged biological liquids, particularly milk or its derivatives, having a microbacterial and spore content, comprising the following operative steps: a) separating the biological liquid into a fatty fraction having a higher concentration of fatty matter and a non-fatty fraction having a lower concentration of fatty matter compared to the initial concentration; b) heat treating the non-fatty fraction; c) cooling the non-fatty fraction to a temperature close to the storage temperature (Tc); d) preheating the fatty fraction to a predefined temperature (Ts); irradiating the fatty fraction with electromagnetic radiation for a predefined time (t.sub.irr); f) cooling the fatty fraction to a temperature close to the storage temperature (Tc); g) mixing the individually treated fractions so as to reconstitute said biological liquid. The electromagnetic radiation is in the range of radio-frequencies having frequencies of less than 1 GHz.
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