The potential health and nutritional benefits of probiotics have boosted the demand for functional probiotic foods. The efficacy of probiotics depends on providing a specific number of viable cells on their consumption. Microencapsulation (ME) has been used to provide protection for probiotics all through food processing and marketing until they reach the target site in the gastrointestinal (GI) tract. The biomaterials and techniques used in ME are the main factors affecting the viability of encapsulated probiotics. Milk proteins offer several advantages in comparison to other biomaterials widely used in ME of probiotics. Several techniques have been developed for the use of whey proteins and casein in ME of several Lactobacillus and Bifidobacterium probiotic strains. Also, the survival of probiotics encapsulated in milk proteins during preparation, storage, and in simulated GI environment has been studied. The present review gives an overview on the use of milk proteins in ME of probiotics with emphasis on the efficiency of the developed techniques.
The aim of this review was to highlight the progress achieved in the use of milk protein as nano vehicles for nutraceuticals. Reassembled casein and β‐casein micelles and core/shell nanoparticles from casein with other biopolymers have been prepared. Also, cross‐linking of casein micelles has developed stable nanoparticles. Nanogels of whey proteins (WP), β‐lactoglobulin (β‐LG) and lactoferrin (Lf) have been prepared by controlled thermal treatment, and several core/shell nanoparticles have been developed from WP or β‐LG with several polysaccharides. The developed caseins and WP nanoparticles have been used as carriers for several nutraceuticals. Examples have been presented and discussed.
Enzymatic hydrolysis of milk proteins has been a subject of numerous research studies and patents. The driving force for these studies has been the increased utilization of milk proteins. The industrial uses of milk proteins are based on their unique composition, functionality, and nutritive values. The diversity of milk protein fraction, the large number of proteinases, and controlled hydrolysis conditions used resulted in the preparation of hydrolysates suitable for several purposes. Enzymatic hydrolysis of milk proteins modifies the techno-functional and biofunctional properties of hydrolysates depending on the enzyme(s) and hydrolysis conditions used. Milk protein hydrolysates (MPH) are used commonly in normal and clinical nutrition and as a functional food ingredient. In the present review, emphasis has been made to highlight methods applied for the preparation of MPH, and the functional properties and utilization of the obtained hydrolysates.
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