Disorder in milk proteins: adipophilin and TIP47, important constituents of the milk fat globule membrane

2019 ◽  
Vol 38 (4) ◽  
pp. 1214-1229 ◽  
Author(s):  
Elrashdy M. Redwan ◽  
Saleh A. Alkarim ◽  
Amr A. El-Hanafy ◽  
Yasser M. Saad ◽  
Hussein A. Almehdar ◽  
...  
Keyword(s):  
Milk Fat ◽  
Milk Proteins ◽  
Milk Fat Globule Membrane ◽  
Milk Fat Globule ◽  
Fat Globule

Interactions between the bovine milk fat globule membrane and skim milk components on heating whole milk

1992 ◽  
Vol 59 (2) ◽  
pp. 187-195 ◽  
Author(s):  
Avis V. Houlihan ◽  
Philippa A. Goddard ◽  
Stephen M. Nottingham ◽  
Barry J. Kitchen ◽  
Colin J. Masters
Keyword(s):  
Milk Fat ◽  
Bovine Milk ◽  
Skim Milk ◽  
Milk Proteins ◽  
Raw Milk ◽  
Membrane Lipid ◽  
Milk Fat Globule Membrane ◽  
Whole Milk ◽  
Milk Fat Globule ◽  
Fat Globule

SummaryHeating raw milk at 80 °C for 2·5–20 min was found to result in compositional changes in the milk fat globule membrane (MFGM). The yield of protein material increased with the duration of heating, owing to incorporation of skim milk proteins, predominantly β-lactoglobulin, into the membrane. Lipid components of the MFGM were also affected, with losses of triacylglycerols on heating.

Identification of lipid synthesis and secretion proteins in bovine milk

2014 ◽  
Vol 81 (1) ◽  
pp. 65-72 ◽  
Author(s):  
Jing Lu ◽  
Toon van Hooijdonk ◽  
Sjef Boeren ◽  
Jacques Vervoort ◽  
Kasper Hettinga
Keyword(s):  
Dairy Cows ◽  
Milk Fat ◽  
Bovine Milk ◽  
Lipid Synthesis ◽  
Milk Proteins ◽  
Milk Fat Globule Membrane ◽  
Milk Serum ◽  
Milk Fat Globule ◽  
Fat Globule ◽  
Secretion Pathways

Lactation physiology is a process that is only partly understood. Proteomics techniques have shown to be useful to help advance the knowledge on lactation physiology in human and rodent species but have not been used as major tools for dairy cows, except for mastitis. In this paper, advanced non-targeted proteomics techniques (Filter aided sample preparation and NanoLC-Orbitrap-MS/MS) were applied to study the milk fat globule membrane and milk serum fraction, resulting in the identification of 246 proteins. Of these, 23 transporters and enzymes were related to lipid synthesis and secretion in mammary gland and their functions are discussed in detail. The identification of these intracellular transporters and enzymes in milk provides a possibility of using milk itself to study lipid synthesis and secretion pathways. This full-scale scan of milk proteins by using non-targeted proteomic analysis helps to reveal the important proteins involved in lipid synthesis and secretion for further examination in targeted studies.

scholarly journals Changes in structure of the bovine milk fat globule membrane on heating whole milk

1992 ◽  
Vol 59 (3) ◽  
pp. 321-329 ◽  
Author(s):  
Avis V. Houlihan ◽  
Philippa A. Goddard ◽  
Barry J. Kitchen ◽  
Colin J. Masters
Keyword(s):  
Milk Fat ◽  
Density Gradient Centrifugation ◽  
Gradient Centrifugation ◽  
Skim Milk ◽  
Milk Proteins ◽  
Milk Fat Globule Membrane ◽  
Whole Milk ◽  
Milk Fat Globule ◽  
Fat Globule ◽  
Membrane Components

SummaryThe effects of heat-induced interactions between milk fat globule membrane components and skim milk proteins in whole milk on the structure of the membrane were examined by isopycnic sucrose density gradient centrifugation and by using Triton X-100 as a membrane probe. Skim milk components were incorporated into all the lipoprotein fractions separated by density gradient centrifugation. High density complexes, higher in density than those found in the natural milk fat globule membrane, were formed during the heat treatment. Losses of natural membrane polypeptides from the medium and low density lipoproteins were observed on heating. Heating whole milk also altered the rate of release of membrane components by detergent, with decreases in protein released and an increase in phospholipid constituents released. Studies on washed cream indicated that some of the changes in the membrane on heating whole milk occurred due to the heat treatment alone, independent of the interactions with skim milk proteins.

scholarly journals Milk Fat Globule Membrane Proteome and Micronutrients in the Milk Lipid Fraction: Insights into Milk Bioactive Compounds

Dairy ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 202-217
Author(s):  
Michele Manoni ◽  
Donata Cattaneo ◽  
Sharon Mazzoleni ◽  
Carlotta Giromini ◽  
Antonella Baldi ◽  
...  
Keyword(s):  
Milk Fat ◽  
Lipid Fraction ◽  
Value Added ◽  
Milk Lipid ◽  
Milk Fat Globule Membrane ◽  
Fat Globules ◽  
Milk Fat Globules ◽  
Milk Fat Globule ◽  
Fat Globule ◽  
Value Added Products

Milk lipids are composed of milk fat globules (MFGs) surrounded by the milk fat globule membrane (MFGM). MFGM protects MFGs from coalescence and enzymatic degradation. The milk lipid fraction is a “natural solvent” for macronutrients such as phospholipids, proteins and cholesterol, and micronutrients such as minerals and vitamins. The research focused largely on the polar lipids of MFGM, given their wide bioactive properties. In this review we discussed (i) the composition of MFGM proteome and its variations among species and phases of lactation and (ii) the micronutrient content of human and cow’s milk lipid fraction. The major MFGM proteins are shared among species, but the molecular function and protein expression of MFGM proteins vary among species and phases of lactation. The main minerals in the milk lipid fraction are iron, zinc, copper and calcium, whereas the major vitamins are vitamin A, β-carotene, riboflavin and α-tocopherol. The update and the combination of this knowledge could lead to the exploitation of the MFGM proteome and the milk lipid fraction at nutritional, biological or technological levels. An example is the design of innovative and value-added products, such as MFGM-supplemented infant formulas.

PROTEOME OF MILK FAT GLOBULE MEMBRANE AND MAMMARY GLAND TISSUE IN GOAT FED DIFFERENT LIPID SUPPLEMENTATION

2021 ◽  
pp. 106378
Author(s):  
Iolly Tábata Oliveira Marques ◽  
Fábio Roger Vasconcelos ◽  
Juliana Paula Martins Alves ◽  
Assis Rubens Montenegro ◽  
César Carneiro Linhares Fernandes ◽  
...  
Keyword(s):  
Mammary Gland ◽  
Milk Fat ◽  
Milk Fat Globule Membrane ◽  
Mammary Gland Tissue ◽  
Gland Tissue ◽  
Milk Fat Globule ◽  
Lipid Supplementation ◽  
Fat Globule

Production and characterization of monoclonal antibodies directed against bovine milk fat globule membrane (MFGM)

1994 ◽  
Vol 1199 (1) ◽  
pp. 87-95 ◽  
Author(s):  
Naohito Aoki ◽  
Hidenori Kuroda ◽  
Miho Urabe ◽  
Yoshimi Taniguchi ◽  
Takahiro Adachi ◽  
...  
Keyword(s):  
Monoclonal Antibodies ◽  
Milk Fat ◽  
Bovine Milk ◽  
Milk Fat Globule Membrane ◽  
Milk Fat Globule ◽  
Fat Globule

Chemical changes in bovine milk fat globule membrane caused by heat treatment and homogenization of whole milk

2002 ◽  
Vol 69 (4) ◽  
pp. 555-567 ◽  
Author(s):  
SUNG JE LEE ◽  
JOHN W. SHERBON
Keyword(s):  
Heat Treatment ◽  
Membrane Proteins ◽  
Milk Fat ◽  
Whey Proteins ◽  
Bovine Milk ◽  
Chemical Changes ◽  
Milk Fat Globule Membrane ◽  
Whole Milk ◽  
Milk Fat Globule ◽  
Fat Globule

The effects of heat treatment and homogenization of whole milk on chemical changes in the milk fat globule membrane (MFGM) were investigated. Heating at 80 °C for 3–18 min caused an incorporation of whey proteins, especially β-lactoglobulin (β-lg), into MFGM, thus increasing the protein content of the membrane and decreasing the lipid. SDS-PAGE showed that membrane glycoproteins, such as PAS-6 and PAS-7, had disappeared or were weakly stained in the gel due to heating of the milk. Heating also decreased free sulphydryl (SH) groups in the MFGM and increased disulphide (SS) groups, suggesting that incorporation of β-lg might be due to association with membrane proteins via disulphide bonds. In contrast, homogenization caused an adsorption of caseins to the MFGM but no binding of whey proteins to the MFGM without heating. Binding of caseins and whey proteins and loss of membrane proteins were not significantly different between milk samples that were homogenized before and after heating. Viscosity of whole milk was increased when milk was treated with both homogenization and heating.

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