Fermented whey preparation and method for producing the same

A - Human Necessities – 23 – C

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A23C 21/02 (2006.01) A23C 9/123 (2006.01)

Patent

CA 2741679

This invention provides a fermented whey preparation produced by carrying out of high-temperature sterilization of an aqueous whey protein solution having a solid content of 11 to 35% by weight and a pH value adjusted to 6.5 to 8.0, then subjecting the sterilized aqueous whey protein solution to lactic acid fermentation, and homogenizing the resultant fermentation liquor. In this case, lactose contained in the sterilized aqueous whey protein solution after the high-temperature sterilization is enzymatically degraded with lactase at a stage before the lactic acid fermentation, during the lactic acid fermentation and/or after the lactic acid fermentation to enhance sweetness. The fermented whey preparation of the present invention has a good flavor provided by imparting unique sourness produced by fermentation and natural sweetness and, at the same time, has a refreshed and invigorating flavor and further has a velvety texture. Further, the fermented whey preparation has excellent thermal stability and safety.

L'invention concerne une préparation de lactosérum fermentée qui est obtenue en soumettant une solution aqueuse de protéines de lactosérum, dont la concentration en matières solides est de 11 à 35 % en poids et dont le pH est ajusté entre 6,5 et 8,0, à une stérilisation à haute température, puis à une fermentation lactique et en homogénéisant le bouillon fermenté ainsi obtenu, le lactose contenu dans la solution aqueuse de protéines de lactosérum après stérilisation à haute température étant enzymatiquement dégradé par une lactase avant, pendant, et/ou après fermentation lactique, ce qui augmente le goût sucré. La préparation de lactosérum fermentée selon l'invention présente une saveur agréable avec un goût aigre distinct dû à la fermentation et un goût sucré naturel, ainsi qu'une saveur vive et rafraîchissante, et en outre, sa texture est veloutée et lisse. De plus, la préparation de lactosérum fermentée est excellente en termes de résistance à la chaleur et de sécurité alimentaire.

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