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Technical note: Vitamin D-fortified Cheddar type cheese produced from concentrated milk
Jonathan Boivin-Piché1, Jean-Christophe Vuillemard2, Daniel St-Gelais1
1Food Research and Development Center, Agriculture and Agri-Food Canada, 3600 boul. Casavant Ouest, St-Hyacinthe QC, Canada, J2S 8E2; Institut sur la Nutrition et les Aliments Fonctionnels, Centre de recherche STELA, Université Laval, Quebec City, QC, Canada, G1V 0A6.
Abstract:
The technological challenge related to cheese fortification with vitamin D is the loss of a large proportion of vitamin D during the wheying-off step. The use of ultrafiltration (UF) to concentrate the milk before vitamin D enrichment and cheese manufacturing could be a way to reduce the volume of whey and consequently the vitamin D losses in cheese whey. Control (1.0×) and concentrated milks (1.4× and 1.8×) were fortified with vitamin D at a concentration of 450 IU per gram of milk. The 1.8× cheese milk concentration reduced slightly the vitamin D loss during the draining step (19.8%) compared with the control cheese (25.5%) and vitamin D remained stable during Cheddar cheese processing and ripening.
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