Calcium fortified yogurt and methods of preparation

A - Human Necessities – 23 – C

Patent

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Details

A23C 9/13 (2006.01) A23C 9/133 (2006.01)

Patent

CA 2283445

Nutritionally improved yogurt products are provided that include a calcium phosphate salt of reduced particle size. The calcium fortification provides yogurts containing a total calcium content of 500 to 1500 mg per 170 g of yogurt. The calcium phosphate has a particle size of less than 150 µm in the product. A method for producing the calcium fortified yogurt is also provided wherein an insoluble calcium salt is admixed with a yogurt base subsequent to fermentation with minimal shear. The yogurt base is prepared by conventional fermentation to have a thickness of at least 1500 cps (at 5 ~C). Separately, a concentrated slurry of a calcium phosphate is prepared having a pH of 4.0 to 4.6. The pH is adjusted by adding an edible organic or mineral acid. The slurry can be subjected to a size reduction step such as homogenization. Sufficient amounts of calcium phosphate slurry are admixed with the yogurt base to provide desired levels of calcium content (native plus supplemental).

L'invention concerne des yogourts à valeur nutritionnelle accrue, qui comprennent un sel de phosphate de calcium à taille de particule réduite. L'enrichissement en calcium permet de produire des yogourts ayant une teneur totale en calcium de 500 à 1 500 mg pour 170 g de yogourt. Le phosphate de calcium présente une taille de particule de moins de 150 µm dans le produit. L'invention porte aussi sur un procédé de production dudit yogourt enrichi en calcium, qui consiste à mélanger un sel de calcium insoluble avec une base de yogourt après sa fermentation, avec un cisaillement minimum. La base de yogourt se prépare par fermentation classique de sorte qu'une épaisseur d'au moins 1 500 cps (à 5 ·C) soit obtenue. Une bouillie liquide concentrée de calcium de phosphate, ayant un pH de 4,0 à 4,6, est préparée séparément. Le pH est ajusté par l'addition d'un acide organique ou minéral comestible. La bouillie peut être soumise à une phase de réduction comme, par exemple, l'homogénéisation. Des quantités suffisantes de bouillie de phosphate de calcium sont mélangées à la base de yogourt de sorte que les teneur voulues en calcium (d'origine et supplémentaire) soient atteintes.

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