title: Effect of fortification of milk with omega-3 fatty acids, phytosterols and soluble fibre on the sensory, physicochemical and microbiological properties of milk.
abstract: BACKGROUND
  The effect of the addition of flaxseed oil (FO), phytosterols (PS) and polydextrose (PDX) on the physicochemical and sensory properties of milk was investigated, as they are known to impart health benefits.
  
  
  RESULTS
  For incorporating PS, a hydrophobic substance, FO and milk fat (MF) as an oil source, an emulsifier (DATEM) and PDX solution as an aqueous medium were used for the preparation of emulsion. Three emulsion formulations A (8 g PS, 8 g FO, 20 g PDX, 6 g MF), B (10 g PS, 10 g FO, 20 g PDX, 4 g MF) and C (12 g PS, 12 g FO, 20 g PDX, 2 g MF) were prepared and added individually to milk at a level of 50 g kg-1. Based on sensory evaluation, formulation B was selected for fortification of milk. The fortified milk kept well at refrigerated temperature for 1 week, and changes in sensory, physicochemical and microbiological properties were comparable to those of control milk. The level of fortificants did not decrease in the milk after 1 week of storage.
  
  
  CONCLUSIONS
  An emulsion containing FO, PS and PDX could successfully serve as a potential delivery system for enhancing the nutritional and therapeutic potential of milk. © 2017 Society of Chemical Industry.
authors.affiliation: Dairy Chemistry Department, National Dairy Research Institute, Southern Regional Station, Bengaluru, India.|Dairy Chemistry Department, College of Dairy Science and Technology, GADVASU, Ludhiana, India.
authors.forename: Veena
authors.initials: V
authors.lastname: Nagarajappa
authors.affiliation: Dairy Chemistry Department, National Dairy Research Institute, Southern Regional Station, Bengaluru, India.
authors.forename: Surendra Nath
authors.initials: SN
authors.lastname: Battula
mesh_terms: D000818:Animals; D002417:Cattle; D015525:Fatty Acids, Omega-3 / Q000032:analysis* / Q000378:metabolism; D005260:Female; D005503:Food Additives / Q000032:analysis / Q000378:metabolism; D005527:Food, Fortified / Q000032:analysis* / Q000382:microbiology*; D006801:Humans; D008043:Linseed Oil / Q000032:analysis / Q000378:metabolism; D008892:Milk / Q000737:chemistry* / Q000378:metabolism / Q000382:microbiology*; D010840:Phytosterols / Q000032:analysis* / Q000378:metabolism; D013649:Taste
chemical_list: D015525:Fatty Acids, Omega-3; D005503:Food Additives; D010840:Phytosterols; D008043:Linseed Oil
keywords: milk; oil-in-water emulsion; omega-3 fatty acids; phytosterols; soluble fibre