Making dry coffee aroma gas with improved aroma characteristics

A - Human Necessities – 23 – F

Patent

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A23F 5/48 (2006.01)

Patent

CA 2175890

Disclosed is a method for making dry coffee aroma gas with improved aroma characteristics, A stream of moisture-containing coffee aroma gas is passed through and allowed to exit a desiccant bed of calcium sulfate granules, wherein said granules initially contain less than about 0.5 % adsorbed moisture by dry weight of said granules. The stream of moisture-containing coffee aroma gas is discontinued after the adsorbed moisture content of the calcium sulfate granules increases from less than about 0.5 % to at least about 4.3 % by dry weight of said granules, but before the moisture content of the stream of desiccant-treated coffee aroma gas exiting the desiccant bed exceeds about 1000 ppm. All of the desiccant-treated coffee aroma gas which exits the desiccant bed is collected and combined until the stream of moisture-containing coffee aroma gas is dicontinued. The desiccant-treated coffee aroma gas contains between about 10 and about 200 ppm of moisture and does not exhibit an unbalanced and excessively musty aroma. The dessicant-treated coffee aroma gas can be used to aromatize food substrates, e.g., instant coffee.

L'invention se rapporte à un procédé de fabrication d'un extrait sec de café doté d'un meilleur arôme. On fait passer un flux d'extrait de café humide sur un lit de dessiccation à base de granulés de sulfate de calcium, ces granulés contenant initialement moins d'environ 0,5 % d'humidité absorbée par poids sec des granulés, et on laisse ce flux sortir. On stoppe l'arrivée du flux d'extrait de café humide lorsque la teneur en eau absorbée par les granulés de sulfate de calcium augmente d'un pourcentage inférieur à environ 0,5 pour atteindre un pourcentage d'environ 4,3 par poids sec desdits granulés, mais avant que la teneur en eau du flux d'extrait de café traité par dessiccation et sortant du lit de dessication n'excède environ 1000 ppm. On recueille tout l'extrait de café traité par dessiccation qui sort du lit de dessiccation, puis on le combine à une autre substance jusqu'à ce qu'on stoppe l'arrivée du flux d'extrait de café humide. L'extrait de café traité par dessiccation a une teneur en eau d'environ 10 à environ 200 ppm, et ne présente pas un arôme déséquilibré et à trop forte odeur de moisi. On peut utiliser cet extrait de café pour aromatiser des aliments, par exemple du café instantané.

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