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J Adv Dairy Res. 2013 Jul 24;1(2):104.

Coupling Mass Spectrometry-Based "Omic" Sciences with Bioguided Processing to Unravel Milk's Hidden Bioactivities.

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1
Department of Food Science & Technology, University of California, One Shields Avenue, Davis, CA 95616, USA ; Foods for Health Institute, University of California, One Shields Avenue, Davis, CA 95616, USA.
2
Department of Food Science & Technology, University of California, One Shields Avenue, Davis, CA 95616, USA.

Abstract

Many of milk's functional molecules could not be discovered until the right concordance of novel separation and analytical technologies were developed and applied. Many health-promoting components still await discovery due to technical challenges in their identification, isolation and testing. As new analytical technologies are assembled, new functional milk molecules will be discovered. Bovine milk is a source of a wide array of known bioactive compounds from a variety of molecular classes, including free glycans, lipids, glycolipids, peptides, proteins, glycoproteins, stem cells and microRNA. Because milk is such a complex mixture, when analyzed without fractionation or purification, many components mask the analytical signal of others, so some components cannot be detected. Modern analytics allow for the discovery and characterization of hundreds of novel milk compounds with high-resolution and high-accuracy. Liquid chromatography paired with electrospray ionization allows the separation of peptides, glycans and glycolipids for improved mass spectrometric detection. Target proteins and glycoproteins can now be purified from intact milk or other dairy streams by chromatography in order to better characterize these proteins for new bioactivities. The combination of advanced analytics with the new engineering capabilities will allow for high molecular resolution and separation techniques that can be scaled-up to semi-industrial and industrial scale for translation of lab-based discoveries. Bioguided analysis and design of dairy processing side streams will result in the transformation of waste into isolated functional ingredients to add value to dietary products.

KEYWORDS:

Bioactive Molecules; Bioguided Processing; Glycan; Glycolipid; Glycoprotein; Mass Spectrometry; Milk; Oligosaccharide; Peptide; Purification

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