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Hu C, Dou W, Ma X, An Y, Wang D, Ma Y. AMP-activated protein kinase mediates (-)-epigallocatechin-3-gallate (EGCG) to promote lipid synthesis in mastitis cows. Anim Biotechnol 2024; 35:2381080. [PMID: 39087503 DOI: 10.1080/10495398.2024.2381080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2024]
Abstract
Mastitis, a serious threat to the health and milk production function of dairy cows decreases milk quality. Blood from three healthy cows and three mastitis cows were collected in this study and their transcriptome was sequenced using the Illumina HiSeq platform. Differentially expressed genes (DEGs) were screened according to the |log2FoldChange| > 1 and P-value < 0.05 criteria. Pathway enrichment and functional annotation were performed through KEGG and GO analyses. Finally, the mechanism of the AMP-activated protein kinase (AMPK) mediation of (-)-epigallocatechin-3-gallate (EGCG) to promote lipid metabolism in mastitis cows was analyzed in bovine mammary epithelial cells (BMECs). Transcriptome analysis revealed a total of 825 DEGs, with 474 genes showing increased expression and 351 genes showing decreased expression. The KEGG analysis of DEGs revealed that they were mainly linked to tumour necrosis factor, nuclear factor-κB signalling pathway, and lipid metabolism-related signalling pathway, whereas GO functional annotation found that DEGs were enriched in threonine and methionine kinase activity, cellular metabolic processes, and cytoplasm. AMPK expression, which is involved in several lipid metabolism pathways, was downregulated in mastitis cows. The results of in vitro experiments showed that the inhibition of AMPK promoted the expression of lipid synthesis genes in lipopolysaccharide-induced BMECs and that EGCG could promote lipid synthesis by decreasing the expression of AMPK and downregulating the expression of inflammatory factors in inflammatory BMECs. In conclusion, our study demonstrated that AMPK mediated EGCG to inhabit of inflammatory responses and promote of lipid synthesis in inflammatory BMECs.
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Affiliation(s)
- Chunli Hu
- Key Laboratory of Ruminant Molecular and Cellular Breeding of Ningxia Hui Autonomous Region, College of Animal Science and Technology, Ningxia University, Yinchuan, China
| | - Wenli Dou
- Key Laboratory of Ruminant Molecular and Cellular Breeding of Ningxia Hui Autonomous Region, College of Animal Science and Technology, Ningxia University, Yinchuan, China
| | - Xuehu Ma
- Key Laboratory of Ruminant Molecular and Cellular Breeding of Ningxia Hui Autonomous Region, College of Animal Science and Technology, Ningxia University, Yinchuan, China
| | - Yanhao An
- Key Laboratory of Ruminant Molecular and Cellular Breeding of Ningxia Hui Autonomous Region, College of Animal Science and Technology, Ningxia University, Yinchuan, China
| | - Dezhi Wang
- Ningxia Borui Ruminant Nutrition Research Center Co., Ltd, Yinchuan, China
| | - Yanfen Ma
- Key Laboratory of Ruminant Molecular and Cellular Breeding of Ningxia Hui Autonomous Region, College of Animal Science and Technology, Ningxia University, Yinchuan, China
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2
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Li M, Sun L, Du X, Zhao Y, Ren W, Man L, Zhu M, Liu G, Khan MZ, Wang C. Characterization and discrimination of donkey milk lipids and volatiles across lactation stages. Food Chem X 2024; 23:101740. [PMID: 39253014 PMCID: PMC11381815 DOI: 10.1016/j.fochx.2024.101740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2024] [Revised: 07/31/2024] [Accepted: 08/12/2024] [Indexed: 09/11/2024] Open
Abstract
The lipid and flavor in milk are key factors that affect its quality, which profiles during donkey lactation are not yet clear. In this study, the lipids and volatile compounds (VOCs) in donkey milk from stages of lactation were analyzed by using LC-MS and GC-IMS. A total of 1774 lipids were identified in donkey milk, spanning over 6 major categories and attributed to 30 subclasses. The 233 differentially expressed lipids were identified between donkey colostrum and mature milk, which participate in 20 metabolic pathways, including glycerophospholipid, linoleic acid, and sphingolipid. Additionally, 35 VOCs in donkey milk were identified, including 28.57% aldehydes, 28.57% ketones, 25.71% esters, and 8.57% alcohols. Of these VOCs, 15 were determined to be characteristic flavors in donkey milk, mainly including methyl 2-methylbutanoate, 2-pentanone, and butyl acetate. 11 significantly different VOCs were found between the groups. Acetone, 2-heptanone, and ethyl acetate-m were considered potential discriminatory markers.
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Affiliation(s)
- Mengmeng Li
- School of Agriculture and Biology, School of Materials Science and Engineering, Liaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng 252000, China
| | - Lingyun Sun
- School of Agriculture and Biology, School of Materials Science and Engineering, Liaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng 252000, China
| | - Xinyi Du
- School of Agriculture and Biology, School of Materials Science and Engineering, Liaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng 252000, China
| | - Yan Zhao
- School of Agriculture and Biology, School of Materials Science and Engineering, Liaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng 252000, China
| | - Wei Ren
- School of Agriculture and Biology, School of Materials Science and Engineering, Liaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng 252000, China
| | - Limin Man
- School of Agriculture and Biology, School of Materials Science and Engineering, Liaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng 252000, China
| | - Mingxia Zhu
- School of Agriculture and Biology, School of Materials Science and Engineering, Liaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng 252000, China
| | - Guiqin Liu
- School of Agriculture and Biology, School of Materials Science and Engineering, Liaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng 252000, China
| | - Muhammad Zahoor Khan
- School of Agriculture and Biology, School of Materials Science and Engineering, Liaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng 252000, China
| | - Changfa Wang
- School of Agriculture and Biology, School of Materials Science and Engineering, Liaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng 252000, China
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3
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Gu JY, Li XB, Liao GQ, Wang TC, Wang ZS, Jia Q, Qian YZ, Zhang XL, Qiu J. Comprehensive analysis of phospholipid in milk and their biological roles as nutrients and biomarkers. Crit Rev Food Sci Nutr 2024:1-20. [PMID: 38556904 DOI: 10.1080/10408398.2024.2330696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/02/2024]
Abstract
Phospholipids (PL) have garnered significant attention due to their physiological activities. Milk and other dairy products are important dietary sources for humans and have been extensively used to analyze the presence of PL by various analytical techniques. In this paper, the analysis techniques of PL were reviewed with the eight trigrams of phospholipidomics and a comprehensive fingerprint of 1295 PLs covering 8 subclasses in milk and other dairy products, especially. Technology is the primary productive force. Based on phospholipidomics technology, we further review the relationship between the composition of PL and factors that may be involved in processing and experimental operation, and emphasized the significance of the biological role played by PL in dietary supplements and biomarkers (production, processing and clinical research), and providing the future research directions.
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Affiliation(s)
- Jing-Yi Gu
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, China
- Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Xia-Bing Li
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, China
- Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Guang-Qin Liao
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, China
- Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Tian-Cai Wang
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, China
- Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Zi-Shuang Wang
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, China
- Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Qi Jia
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, China
- Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Yong-Zhong Qian
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, China
- Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Xing-Lian Zhang
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, China
- Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Jing Qiu
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, China
- Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture and Rural Affairs, Beijing, China
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4
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Ivanova E, Hue-Beauvais C, Castille J, Laubier J, Le Guillou S, Aujean E, Lecardonnel J, Lebrun L, Jaffrezic F, Rousseau-Ralliard D, Péchoux C, Letheule M, Foucras G, Charlier M, Le Provost F. Mutation of SOCS2 induces structural and functional changes in mammary development. Development 2024; 151:dev202332. [PMID: 38391249 DOI: 10.1242/dev.202332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 02/15/2024] [Indexed: 02/24/2024]
Abstract
Lactation is an essential process for mammals. In sheep, the R96C mutation in suppressor of cytokine signaling 2 (SOCS2) protein is associated with greater milk production and increased mastitis sensitivity. To shed light on the involvement of R96C mutation in mammary gland development and lactation, we developed a mouse model carrying this mutation (SOCS2KI/KI). Mammary glands from virgin adult SOCS2KI/KI mice presented a branching defect and less epithelial tissue, which were not compensated for in later stages of mammary development. Mammary epithelial cell (MEC) subpopulations were modified, with mutated mice having three times as many basal cells, accompanied by a decrease in luminal cells. The SOCS2KI/KI mammary gland remained functional; however, MECs contained more lipid droplets versus fat globules, and milk lipid composition was modified. Moreover, the gene expression dynamic from virgin to pregnancy state resulted in the identification of about 3000 differentially expressed genes specific to SOCS2KI/KI or control mice. Our results show that SOCS2 is important for mammary gland development and milk production. In the long term, this finding raises the possibility of ensuring adequate milk production without compromising animal health and welfare.
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Affiliation(s)
- Elitsa Ivanova
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, Jouy-en-Josas 78350, France
| | - Cathy Hue-Beauvais
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, Jouy-en-Josas 78350, France
| | - Johan Castille
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, Jouy-en-Josas 78350, France
| | - Johann Laubier
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, Jouy-en-Josas 78350, France
| | - Sandrine Le Guillou
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, Jouy-en-Josas 78350, France
| | - Etienne Aujean
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, Jouy-en-Josas 78350, France
| | - Jerome Lecardonnel
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, Jouy-en-Josas 78350, France
| | - Laura Lebrun
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, Jouy-en-Josas 78350, France
| | - Florence Jaffrezic
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, Jouy-en-Josas 78350, France
| | - Delphine Rousseau-Ralliard
- Université Paris-Saclay, UVSQ, INRAE, BREED, Jouy-en-Josas 78350, France
- Ecole Nationale Vétérinaire d'Alfort, BREED, Maisons-Alfort 94700, France
| | - Christine Péchoux
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, Jouy-en-Josas 78350, France
| | - Martine Letheule
- Université Paris-Saclay, UVSQ, INRAE, BREED, Jouy-en-Josas 78350, France
- Ecole Nationale Vétérinaire d'Alfort, BREED, Maisons-Alfort 94700, France
| | - Gilles Foucras
- IHAP, Université de Toulouse, INRAE, ENVT, Toulouse 31076, France
| | - Madia Charlier
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, Jouy-en-Josas 78350, France
| | - Fabienne Le Provost
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, Jouy-en-Josas 78350, France
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5
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Argov-Argaman N, Altman H, Janssen JN, Daeem S, Raz C, Mesilati-Stahy R, Penn S, Monsonego-Ornan E. Effect of milk fat globules on growth and metabolism in rats fed an unbalanced diet. Front Nutr 2024; 10:1270171. [PMID: 38274212 PMCID: PMC10808575 DOI: 10.3389/fnut.2023.1270171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 11/23/2023] [Indexed: 01/27/2024] Open
Abstract
We assessed the effects of supplementing milk fat globules (MFG) on the growth and development of the skeleton in rats fed a Western unbalanced diet (UBD). The UBD is high in sugar and fat, low in protein, fiber, and micronutrients, and negatively impacts health. The MFG-a complex lipid-protein assembly secreted into milk-has a unique structure and composition, which differs significantly from isolated and processed dietary ingredients. Rats consuming the UBD exhibited growth retardation and disrupted bone structural and mechanical parameters; these were improved by supplementation with small MFG. The addition of small MFG increased the efficiency of protein utilization for growth, and improved trabecular and cortical bone parameters. Furthermore, consumption of UBD led to a decreased concentration of saturated fatty acids and increased levels of polyunsaturated fatty acids (PUFA), particularly omega-6 PUFA, in the serum, liver, and adipose tissue. The addition of small MFG restored PUFA concentration and the ratio of omega-6 to omega-3 PUFA in bone marrow and adipose tissue. Finally, large but not small MFG supplementation affected the cecal microbiome in rats. Overall, our results suggest that natural structure MFG supplementation can improve metabolism and bone development in rats fed an UBD, with the effects depending on MFG size. Moreover, the benefits of small MFG to bone development and metabolism were not mediated by the microbiome, as the detrimental effects of an UBD on the microbiome were not mitigated by MFG supplementation.
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Affiliation(s)
- Nurit Argov-Argaman
- Department of Animal Sciences, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Hodaya Altman
- School of Nutrition Science, Institute of Biochemistry, Hebrew University of Jerusalem, Jerusalem, Israel
| | | | - Seman Daeem
- Department of Animal Sciences, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Chen Raz
- Department of Animal Sciences, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Ronit Mesilati-Stahy
- School of Nutrition Science, Institute of Biochemistry, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Svetlana Penn
- School of Nutrition Science, Institute of Biochemistry, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Efrat Monsonego-Ornan
- School of Nutrition Science, Institute of Biochemistry, Hebrew University of Jerusalem, Jerusalem, Israel
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6
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Pan Z, Ye A, Fraser K, Li S, Dave A, Singh H. Comparative lipidomics analysis of different-sized fat globules in sheep and cow milks. Curr Res Food Sci 2023; 8:100655. [PMID: 38204877 PMCID: PMC10776417 DOI: 10.1016/j.crfs.2023.100655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 01/12/2024] Open
Abstract
The effect of milk fat globule (MFG) size and species (sheep versus cow) on the lipid and protein compositions of sheep and cow milks was studied. The MFGs in raw cow and sheep milks were separated into six significantly different-sized (1.5-5.5 μm) groups by a gravity-based separation method, and their fatty acids, their lipidomes and the protein compositions of their MFG membranes were determined. The proportions of polar lipids increased but glycoproteins decreased with decreasing MFG size in both sheep milk and cow milk; the fatty acid composition showed few differences among the MFG groups. The average size of each MFG group was comparable between sheep milk and cow milk. Sheep milk contained higher proportions of short-chain fatty acids, medium-chain fatty acids and sphingomyelin than cow milk in all MFG groups. The proportion of glycoproteins was higher in cow MFG membrane than in sheep MFG membrane. The results suggested that the lipid and protein compositions were markedly species and size dependent.
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Affiliation(s)
- Zheng Pan
- Riddet Institute, Massey University, Private Bag 11 222, Palmerston North 4442, New Zealand
| | - Aiqian Ye
- Riddet Institute, Massey University, Private Bag 11 222, Palmerston North 4442, New Zealand
| | - Karl Fraser
- Riddet Institute, Massey University, Private Bag 11 222, Palmerston North 4442, New Zealand
- AgResearch, Private Bag 11 008, Palmerston North 4442, New Zealand
| | - Siqi Li
- Riddet Institute, Massey University, Private Bag 11 222, Palmerston North 4442, New Zealand
| | - Anant Dave
- Riddet Institute, Massey University, Private Bag 11 222, Palmerston North 4442, New Zealand
| | - Harjinder Singh
- Riddet Institute, Massey University, Private Bag 11 222, Palmerston North 4442, New Zealand
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7
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Tzirkel-Hancock N, Sharabi L, Argov-Argaman N. Milk fat globule size: Unraveling the intricate relationship between metabolism, homeostasis, and stress signaling. Biochimie 2023; 215:4-11. [PMID: 37802210 DOI: 10.1016/j.biochi.2023.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 10/02/2023] [Accepted: 10/03/2023] [Indexed: 10/08/2023]
Abstract
Fat is an important component of milk which delivers energy, nutrients, and bioactive molecules from the lactating mother to the suckling neonate. Milk fat consists of a complex mixture of different types of lipids; hundreds of fatty acids, triglycerides, phospholipids, sphingolipids, cholesterol and cholesteryl ester, and glycoconjugates, secreted by the mammary gland epithelial cells (MEC) in the form of a lipid-protein assembly termed the milk fat globule (MFG). The mammary gland in general, and specifically that of modern dairy cows, faces metabolic stress once lactation commences, which changes the lipogenic capacity of MECs directly by reducing available energy and reducing factors required for both lipid synthesis and secretion or indirectly by activating a proinflammatory response. Both processes have the capacity to change the morphometric features (e.g., number and size) of the secreted MFG and its precursor-the intracellular lipid droplet (LD). The MFG size is tightly associated with its lipidome and proteome and also affects the bioavailability of milk fat and protein. Thus, MFG size has the potential to regulate the bioactivity of milk and dairy products. MFG size also plays a central role in the functional properties of milk and dairy products such as texture and stability. To understand how stress affects the structure-function of the MFG, we cover: (i) The mechanism of production and secretion of the MFG and the implications of MFG size, (ii) How the response mechanisms to stress can change the morphometric features of MFGs, and (iii) The possible consequences of such modifications.
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Affiliation(s)
- Noam Tzirkel-Hancock
- Department of Animal Science, The Robert H Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Israel
| | - Lior Sharabi
- Department of Animal Science, The Robert H Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Israel
| | - Nurit Argov-Argaman
- Department of Animal Science, The Robert H Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Israel.
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8
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Raz C, Shemesh M, Argov-Argaman N. The role of milk fat globule size in modulating the composition of postbiotics produced by Bacillus subtilis and their effect on mammary epithelial cells. Food Chem 2023; 427:136730. [PMID: 37392632 DOI: 10.1016/j.foodchem.2023.136730] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 06/15/2023] [Accepted: 06/24/2023] [Indexed: 07/03/2023]
Abstract
Milk lipids are secreted into the milk collecting ducts as milk fat globule (MFG) where they are exposed to microflora of the udder. We hypothesized that MFG size modulates the metabolic fingerprint of B. subtilis. Accordingly, small and large (2.3 and 7.0 µm, respectively) MFG were isolated from cow milk and used as a substrate for B. subtilis. Small MFG enhanced growth, whereas large MFG enhanced biofilm formation. Bacteria incubated with small MFG had increased concentration of metabolites related to energy production whereas metabolome of the bacteria incubated with large MFG had reduced concentrations of metabolites important for biofilm formation. Postbiotics from bacteria grown on large MFG exacerbated the proinflammatory response of MEC to LPS, and changed the expression of key enzymes involved in lipid and protein synthesis. Our results suggest that MFG size modulate growth trajectories and metabolome of B. subtilis, and consequently the stress response of host cells.
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Affiliation(s)
- Chen Raz
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, the Hebrew University of Jerusalem, Israel; Department of Food Sciences, Institute of Postharvest Technology and Food Sciences, Agricultural Research Organization, The Volcani Institute, Rishon LeZion 7528809, Israel.
| | - Moshe Shemesh
- Department of Food Sciences, Institute of Postharvest Technology and Food Sciences, Agricultural Research Organization, The Volcani Institute, Rishon LeZion 7528809, Israel.
| | - Nurit Argov-Argaman
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, the Hebrew University of Jerusalem, Israel.
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9
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Pan J, Chen M, Li N, Han R, Yang Y, Zheng N, Zhao S, Zhang Y. Bioactive Functions of Lipids in the Milk Fat Globule Membrane: A Comprehensive Review. Foods 2023; 12:3755. [PMID: 37893646 PMCID: PMC10606317 DOI: 10.3390/foods12203755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 09/19/2023] [Accepted: 09/19/2023] [Indexed: 10/29/2023] Open
Abstract
The milk fat globule membrane (MFGM) is a complex tri-layer membrane that wraps droplets of lipids in milk. In recent years, it has attracted widespread attention due to its excellent bioactive functions and nutritional value. MFGM contains a diverse array of bioactive lipids, including cholesterol, phospholipids, and sphingolipids, which play pivotal roles in mediating the bioactivity of the MFGM. We sequentially summarize the main lipid types in the MFGM in this comprehensive review and outline the characterization methods used to employ them. In this comprehensive review, we sequentially describe the types of major lipids found in the MFGM and outline the characterization methods employed to study them. Additionally, we compare the structural disparities among glycerophospholipids, sphingolipids, and gangliosides, while introducing the formation of lipid rafts facilitated by cholesterol. The focus of this review revolves around an extensive evaluation of the current research on lipid isolates from the MFGM, as well as products containing MFGM lipids, with respect to their impact on human health. Notably, we emphasize the clinical trials encompassing a large number of participants. The summarized bioactive functions of MFGM lipids encompass the regulation of human growth and development, influence on intestinal health, inhibition of cholesterol absorption, enhancement of exercise capacity, and anticancer effects. By offering a comprehensive overview, the aim of this review is to provide valuable insights into the diverse biologically active functions exhibited by lipids in the MFGM.
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Affiliation(s)
- Junyu Pan
- Key Laboratory of Quality & Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (J.P.); (M.C.); (N.Z.); (S.Z.)
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; (N.L.); (R.H.); (Y.Y.)
| | - Meiqing Chen
- Key Laboratory of Quality & Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (J.P.); (M.C.); (N.Z.); (S.Z.)
| | - Ning Li
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; (N.L.); (R.H.); (Y.Y.)
| | - Rongwei Han
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; (N.L.); (R.H.); (Y.Y.)
| | - Yongxin Yang
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; (N.L.); (R.H.); (Y.Y.)
| | - Nan Zheng
- Key Laboratory of Quality & Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (J.P.); (M.C.); (N.Z.); (S.Z.)
| | - Shengguo Zhao
- Key Laboratory of Quality & Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (J.P.); (M.C.); (N.Z.); (S.Z.)
| | - Yangdong Zhang
- Key Laboratory of Quality & Safety Control for Milk and Dairy Products of Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (J.P.); (M.C.); (N.Z.); (S.Z.)
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10
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Connolly C, Yin X, Brennan L. Impact of Lactation Stage on the Metabolite Composition of Bovine Milk. Molecules 2023; 28:6608. [PMID: 37764384 PMCID: PMC10535462 DOI: 10.3390/molecules28186608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 09/10/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
Bovine milk is a nutrient-dense food and a major component of the human diet. Therefore, understanding the factors that impact its composition is of great importance. Applications of metabolomics provide in-depth analysis of the metabolite composition of milk. The objective of this research was to examine the impact of lactation stage on bovine milk metabolite levels. Metabolomic analysis of bovine milk powder samples across lactation (N = 18) was performed using nuclear magnetic resonance (1H-NMR) spectroscopy and liquid chromatography-tandem mass spectrometry (LC-MS/MS). Forty-one metabolites were identified and quantified in the 1H-NMR spectra. Statistical analysis revealed that 17 metabolites were significantly different across lactation stages (FDR < 0.05), of which the majority had higher levels in early lactation. In total, 491 metabolites were measured using LC-MS/MS, of which 269 had significantly different levels across lactation (FDR < 0.05). Compound classes significantly affected by lactation stage included phosphatidylcholines (59%) and triglycerides (64%), of which 100% of phosphatidylcholines and 61% of triglycerides increased from early lactation onwards. Our study demonstrates significant differences in metabolites across the stages of lactation, with early-lactation milk having a distinct metabolomic profile. More research is warranted to further explore these compositional differences to inform animal feeding practice.
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Affiliation(s)
- Claire Connolly
- UCD School of Agriculture and Food Science, UCD Institute of Food and Health, University College Dublin, 4 Dublin, Ireland (X.Y.)
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, 4 Dublin, Ireland
| | - Xiaofei Yin
- UCD School of Agriculture and Food Science, UCD Institute of Food and Health, University College Dublin, 4 Dublin, Ireland (X.Y.)
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, 4 Dublin, Ireland
| | - Lorraine Brennan
- UCD School of Agriculture and Food Science, UCD Institute of Food and Health, University College Dublin, 4 Dublin, Ireland (X.Y.)
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, 4 Dublin, Ireland
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11
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Characterization of Cow, Goat, and Water Buffalo Milk Fat Globule Lipids by High-Performance Thin Layer Chromatography. DAIRY 2023. [DOI: 10.3390/dairy4010014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023] Open
Abstract
Ruminant milk is an essential part of the human diet and is widely accepted as a major nutrient source in developing countries. However, the polar and neutral lipid content variation in milk fat globules (MFG)among cow, goat, and water buffalo is poorly understood. This study used high-performance thin layer chromatography to identify and quantify five major polar (PL) and three neutral lipids (NL) from the MFG of cow, goat, and water buffalo. Optimal separation was achieved for PLs using chloroform: methanol: water (65:25:4), and hexane: diethyl ether: acetic acid (70:30:1) for NLs. The lower detectable (0.12 to 1.53 μg/mL) and quantification (0.12 to 1.53 μg/mL) limits indicated the high sensitivity of the method. Quantification at 540 nm showed the highest abundance of phosphatidylethanolamine and triglycerides. Fat globules were further characterized for size and microstructural properties, which revealed smaller globules in goats (0.99 ± 0.04 μm) than cows (1.85 ± 0.03 μm) and water buffaloes (2.91 ± 0.08 μm), indicating a negative correlation with PL but a positive correlation with NL. The variation in lipid quantity among different animal species suggests more research to support their selection as a suitable source for developing functional food to impact human health positively.
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12
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Zhang M, Fu T, Huang Q, Xing Z, Yang J, Lu W, Hu M, Han LQ, Loor JJ, Gao TY. Size, number and phospholipid composition of milk fat globules are affected by dietary conjugated linoleic acid. J Anim Physiol Anim Nutr (Berl) 2022. [DOI: 10.1111/jpn.13788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 09/07/2022] [Accepted: 10/14/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Menglu Zhang
- Department of Animal Production and Husbandry, College of Animal Science and Technology Henan Agricultural University Zhengzhou P.R. China
| | - Tong Fu
- Department of Animal Production and Husbandry, College of Animal Science and Technology Henan Agricultural University Zhengzhou P.R. China
| | - Qixue Huang
- Department of Veterinary Biotechnology, College of Veterinary Medicine Henan Agricultural University Zhengzhou P.R. China
| | - Zhiyang Xing
- Department of Veterinary Biotechnology, College of Veterinary Medicine Henan Agricultural University Zhengzhou P.R. China
| | - Jingna Yang
- Department of Veterinary Biotechnology, College of Veterinary Medicine Henan Agricultural University Zhengzhou P.R. China
| | - Wenyan Lu
- Department of Veterinary Biotechnology, College of Veterinary Medicine Henan Agricultural University Zhengzhou P.R. China
| | - Mingyue Hu
- Department of Veterinary Biotechnology, College of Veterinary Medicine Henan Agricultural University Zhengzhou P.R. China
| | - Li Qiang Han
- Department of Veterinary Biotechnology, College of Veterinary Medicine Henan Agricultural University Zhengzhou P.R. China
| | - Juan J. Loor
- Department of Animal Science, Division of Nutritional Sciences University of Illinois Urbana Illinois USA
| | - Teng Yun Gao
- Department of Animal Production and Husbandry, College of Animal Science and Technology Henan Agricultural University Zhengzhou P.R. China
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13
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Raz C, Paramonov MM, Shemesh M, Argov-Argaman N. The milk fat globule size governs a physiological switch for biofilm formation by Bacillus subtilis. Front Nutr 2022; 9:844587. [PMID: 36034896 PMCID: PMC9404525 DOI: 10.3389/fnut.2022.844587] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 07/20/2022] [Indexed: 11/30/2022] Open
Abstract
Milk lipids are organized in the form of milk fat globules (MFG), ranging in size from 0. 1 to 15 μm. The MFG size is closely associated with the composition of fatty acids, polar lipids, sphingolipids, cholesterol and the content of the MFG membrane (MFGM). Also, the MFGM integral proteins and glycoconjugates differ in composition and structure between different MFG size groups. These compositional differences may modulate the functionality of the MFG and its interaction with microbial cells. We report that small (2.3 μm) MFG facilitates the growth of the Gram-positive bacterium Bacillus subtilis whereas induction of biofilm formation was found in the presence of large (7.0 μm) MFG. Attempting to distinguish between the role played by the size from that played by the composition of the MFG, we compared phospholipid composition between treatments. We found that adjusting the phosphatidylethanolamine (PE) level to the concentration found in the small MFG, increased growth but suppressed biofilm formation in the presence of large MFG. The same normalization protocol for phosphatidylinositol (PI) or sphingomyeline (SM) did not exert a similar effect, suggesting a specific role for PE in regulating bacteria proliferation. We suggest that the content of MFGM, affected by MFG size, governs the ability of B. subtilis to utilize lipids from milk fat. This process might affect the bacterial decision-making toward biofilm formation or growth.
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Affiliation(s)
- Chen Raz
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Jerusalem, Israel.,Department of Food Sciences, Institute of Postharvest Technology and Food Sciences, The Volcani Institute, Agricultural Research Organization, Rishon LeZion, Israel
| | - Margarita Maggie Paramonov
- Department of Food Sciences, Institute of Postharvest Technology and Food Sciences, The Volcani Institute, Agricultural Research Organization, Rishon LeZion, Israel
| | - Moshe Shemesh
- Department of Food Sciences, Institute of Postharvest Technology and Food Sciences, The Volcani Institute, Agricultural Research Organization, Rishon LeZion, Israel
| | - Nurit Argov-Argaman
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Jerusalem, Israel
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14
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Tai P, Golding M, Singh H, Everett D. The bovine milk fat globule membrane – Liquid ordered domain formation and anticholesteremic effects during digestion. FOOD REVIEWS INTERNATIONAL 2022. [DOI: 10.1080/87559129.2021.2015773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Patrick Tai
- Riddet Institute, Palmerston North, New Zealand
- School of Food and Advanced Technology, Massey University, Palmerston North, New Zealand
| | - Matt Golding
- Riddet Institute, Palmerston North, New Zealand
- School of Food and Advanced Technology, Massey University, Palmerston North, New Zealand
| | | | - David Everett
- Riddet Institute, Palmerston North, New Zealand
- Grasslands Research Centre, AgResearch, Palmerston North, New Zealand
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15
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Thum C, Roy NC, Everett DW, McNabb WC. Variation in milk fat globule size and composition: A source of bioactives for human health. Crit Rev Food Sci Nutr 2021; 63:87-113. [PMID: 34190660 DOI: 10.1080/10408398.2021.1944049] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Milk fat globules (MFGs) are secreted from the mammalian gland and are composed of a triacylglycerol core surrounded by a triple membrane structure, the milk fat globule membrane (MFGM). The MFGM contains complex lipids and proteins reported to have nutritional, immunological, neurological and digestive functions. Human and ruminant milk are shown to share a similar MFG structure but with different size, profile and abundance of protein and polar lipids. This review summarizes the reported data on human, bovine, caprine and ovine MFG composition and concentration of bioactive components in different MFG-size fractions. A comprehensive understanding of compositional variations between milk from different species and MFG size fractions may help promote various milk sources as targeted supplements to improve human development and health. MFG size and MFGM composition are species-specific and affected by lactation, diet and breed (or maternal origin). Purification and enrichment methods for some bioactive proteins and lipids present in the MFGM have yet to be established or are not scaled sufficiently to be used to supplement human diets. To overcome this problem, MFG size selection through fractionation or herd selection may provide a convenient way to pre-enrich the MFG fraction with specific protein and lipid components to fulfill human dietary and health requirements.
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Affiliation(s)
- Caroline Thum
- AgResearch, Grasslands Research Centre, Palmerston North, New Zealand.,Riddet Institute, Palmerston North, New Zealand
| | - Nicole C Roy
- AgResearch, Grasslands Research Centre, Palmerston North, New Zealand.,Riddet Institute, Palmerston North, New Zealand.,High-Value Nutrition National Science Challenge, The University of Auckland, Auckland, New Zealand.,Department of Human Nutrition, University of Otago, Dunedin, New Zealand
| | - David W Everett
- AgResearch, Grasslands Research Centre, Palmerston North, New Zealand.,Riddet Institute, Palmerston North, New Zealand
| | - Warren C McNabb
- Riddet Institute, Palmerston North, New Zealand.,High-Value Nutrition National Science Challenge, The University of Auckland, Auckland, New Zealand
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16
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Zhang M, Xing Z, Huang Q, Han L. Effect of conjugated linoleic acid supplementation on fat globule size in raw milk. Int Dairy J 2021. [DOI: 10.1016/j.idairyj.2020.104919] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Lu J, Pickova J, Daniel G, Langton M. The role of key process steps on microstructural organisation of fat globules and lipid profiles in UHT milk processed in a pilot plant unit. Int Dairy J 2020. [DOI: 10.1016/j.idairyj.2020.104741] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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18
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Argov-Argaman N, Glasser T, Muklada H, Hadaya O, Mesilati-Stahy R, Raz C, Landau SY. Lipidome changes, with a focus on phospholipids, due to feeding systems and processing in goat milk. Food Chem 2020; 340:127938. [PMID: 32871356 DOI: 10.1016/j.foodchem.2020.127938] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 08/10/2020] [Accepted: 08/23/2020] [Indexed: 11/16/2022]
Abstract
We evaluated the effects of processing - pasteurization and yoghurt manufacturing - on some health-promoting lipidome components in milk from two feeding treatments - brushland grazing or hay-feeding in confinement - in dairy goats. The contents of fat and protein were higher, and of urea, lower, in grazing goats. Fatty acid composition - at the exception of saturated fatty acids - was affected by dietary management and milk processing. Phospholipid contents was lower in confined goats, with little effect for processing. The phospholipid-to-triglyceride ratio was decreased by pasteurization. Sensitivity to pasteurization of phospholipid composition differed between feeding treatments. The percentage of sphingomyelin increased following pasteurization, with no response for fermentation to yoghurt. These results can be exploited to modulate health-promoting fats in dairy products.
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Affiliation(s)
- Nurit Argov-Argaman
- Department of Animal Science, The Faculty of Agriculture, Food and Environmental Sciences, The Hebrew University of Jerusalem, POB 12, Rehovot 76100, Israel.
| | | | - Hussein Muklada
- Department of Natural Resources, Institute of Plant Sciences, Agricultural Research Organization, The Volcani Center, 68 Hamakabim Road, Rishon Letzion 7505101, Israel.
| | - Oren Hadaya
- Department of Animal Science, The Faculty of Agriculture, Food and Environmental Sciences, The Hebrew University of Jerusalem, POB 12, Rehovot 76100, Israel
| | - Ronit Mesilati-Stahy
- Department of Animal Science, The Faculty of Agriculture, Food and Environmental Sciences, The Hebrew University of Jerusalem, POB 12, Rehovot 76100, Israel
| | - Chen Raz
- Department of Animal Science, The Faculty of Agriculture, Food and Environmental Sciences, The Hebrew University of Jerusalem, POB 12, Rehovot 76100, Israel.
| | - Serge Yan Landau
- Department of Natural Resources, Institute of Plant Sciences, Agricultural Research Organization, The Volcani Center, 68 Hamakabim Road, Rishon Letzion 7505101, Israel.
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19
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20
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Xing ZY, Zhang ML, Wang YY, Yang GY, Han LQ, Loor JJ. Short communication: A decrease in diameter of milk fat globules accompanies milk fat depression induced by conjugated linoleic acid supplementation in lactating dairy cows. J Dairy Sci 2020; 103:5143-5147. [PMID: 32307178 DOI: 10.3168/jds.2019-17845] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 01/09/2020] [Indexed: 11/19/2022]
Abstract
Milk fat is secreted from the mammary gland in the form of milk fat globules (MFG). Although milk fat depression has been studied since the beginning of the last century, the extent to which this phenomenon alters MFG synthesis is not fully understood. The aim of this study was to evaluate the effect of conjugated linoleic acid (CLA) on the size and distribution of MFG during milk fat depression in dairy cows. Twelve Holstein cows in mid lactation (145 ± 31 d in milk, 583 ± 34.6 kg of body weight, and 27.2 ± 2.4 kg of milk/d) were randomly assigned to a control diet or control plus Ca-protected CLA at 15 g/kg of dry matter for a 6-d period. The average diameter and particle size distribution of MFG were measured using a Mastersizer 3000 laser particle size analyzer (Malvern Instruments Ltd., Malvern, UK). Feeding CLA did not affect dry matter intake (16.2 ± 0.4 kg/d), milk production (28.4 ± 0.4 kg/d), milk protein, or lactose, but it decreased milk fat content (3.46 vs. 2.52%). In addition, surface area-related mean diameter of fat globules in cows fed CLA was lower compared with controls (3.02 vs. 3.45 μm). The percentage of large fat globules decreased and that of small fat globules increased in response to CLA. Overall, the data suggest that the milk fat depression induced by CLA is accompanied by a decrease in average diameter of MFG.
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Affiliation(s)
- Z Y Xing
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, P. R. China
| | - M L Zhang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, P. R. China
| | - Y Y Wang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, P. R. China
| | - G Y Yang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, P. R. China
| | - L Q Han
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, P. R. China.
| | - J J Loor
- Department of Animal Sciences and Division of Nutritional Sciences, University of Illinois, Urbana 61801.
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21
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Argov-Argaman N, Raz C, Roth Z. Progesterone Regulation of Milk Fat Globule Size Is VLDL Dependent. Front Endocrinol (Lausanne) 2020; 11:596. [PMID: 33013694 PMCID: PMC7509472 DOI: 10.3389/fendo.2020.00596] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 07/21/2020] [Indexed: 12/23/2022] Open
Abstract
Progesterone plays a pivotal role during mammogenesis and serves as an inhibitor of the secretory activation of mammary cells in the last days of gestation. However, its role during lactogenesis, in particular its involvement in lipid metabolism, and milk fat content and composition, is unknown. Here, we provide new evidence of progesterone's involvement in the regulation of milk fat globule (MFG) synthesis and secretion. Findings from both in vivo and in vitro studies indicated that the concentration and the direction (increase vs. decrease) of progesterone concentration to which the mammary epithelial cells (MECs) are exposed affect MFG size. This was found to be very-low-density lipoprotein (VLDL) dependent: in the presence of VLDL, the proportion of MEC with small lipid droplets (<1 μm) increased 2.4-fold, and the proportion of large lipid droplets (>1 μm) increased 4-fold; in the absence of VLDL, no differences were found. The findings add to our understanding of the mechanism underlying the regulation of MFG size and provide new evidence for progesterone's role in lipid metabolism in the mammary gland during lactogenesis. The fact that the size, synthesis, and composition of MFG are affected by the cyclic pattern of progesterone concentration in the circulation might have physiologically relevant consequences, in particular on milk as a nutritional source.
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22
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23
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Argov-Argaman N, Cohen-Zinder M, Leibovich H, Yishay M, Eitam H, Agmon R, Hadaya O, Mesilati-Stahy R, Miron J, Shabtay A. Dietary pomegranate peel improves milk quality of lactating ewes: Emphasis on milk fat globule membrane properties and antioxidative traits. Food Chem 2019; 313:125822. [PMID: 31931419 DOI: 10.1016/j.foodchem.2019.125822] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 10/24/2019] [Accepted: 10/28/2019] [Indexed: 12/27/2022]
Abstract
Concentrated pomegranate peel extract (CPE) was supplemented to ewes, and milk yield and fat content-fatty acid (FA) and phospholipid (PL) composition-were monitored. CPE-fed ewes had higher milk yield, and fat, protein and lactose contents than controls. Milk PL content-20% higher in the CPE-supplemented group-was regulated by treatment and not by total fat content; milk phosphatidylethanolamine and phosphatidylcholine increased by 22 and 26%, respectively, in CPE-supplemented vs. control ewes. Milk saturated FA concentration was higher, and total polyunsaturated and monounsaturated FA content lower in the CPE vs. control group, regardless of milk total fat content. CPE supplementation increased milk antioxidant capacity, suggesting antioxidant transfer from dietary source to milk, increasing stability and nutritive value. Our study provides first evidence for milk quality improvement in terms of antioxidants and PL enrichment without compromising total milk fat, suggesting strategies to improve dairy animals' milk composition without compromising total production.
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Affiliation(s)
- Nurit Argov-Argaman
- The Animal Science Department, The Robert H Smith Faculty of Agriculture, Food and Environmental Sciences, The Hebrew University of Jerusalem, Israel.
| | - Miri Cohen-Zinder
- Agricultural Research Organization, Institue of Animal Sciences, Newe Ya'ar Research Center, Israel.
| | - Haim Leibovich
- Agricultural Research Organization, Institue of Animal Sciences, Newe Ya'ar Research Center, Israel
| | - Moran Yishay
- Agricultural Research Organization, Institue of Animal Sciences, Newe Ya'ar Research Center, Israel
| | - Harel Eitam
- Agricultural Research Organization, Institue of Animal Sciences, Newe Ya'ar Research Center, Israel.
| | - Rotem Agmon
- Agricultural Research Organization, Institue of Animal Sciences, Newe Ya'ar Research Center, Israel.
| | - Oren Hadaya
- The Animal Science Department, The Robert H Smith Faculty of Agriculture, Food and Environmental Sciences, The Hebrew University of Jerusalem, Israel
| | - Ronit Mesilati-Stahy
- The Animal Science Department, The Robert H Smith Faculty of Agriculture, Food and Environmental Sciences, The Hebrew University of Jerusalem, Israel.
| | - Joshua Miron
- Agricultural Research Organization, Institute of Animal Sciences, Bet Dagan, Israel.
| | - Ariel Shabtay
- Agricultural Research Organization, Institue of Animal Sciences, Newe Ya'ar Research Center, Israel.
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24
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Walter L, Shrestha P, Fry R, Leury BJ, Logan A. Lipid metabolic differences in cows producing small or large milk fat globules: Fatty acid origin and degree of saturation. J Dairy Sci 2019; 103:1920-1930. [PMID: 31759596 DOI: 10.3168/jds.2019-16775] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 09/10/2019] [Indexed: 11/19/2022]
Abstract
This study compared cows that consistently produce milk with small (volume-weighted mean diameter of 2.92-3.83 µm, with an average diameter of 3.29 µm) or large (volume-weighted mean diameter of 4.58-5.67 µm, with an average diameter of 4.92 µm) milk fat globule (MFG) size distributions in terms of the fatty acid (FA) composition of the MFG core. Selected cows fell into the respective size group over at least 3 independent measurements, including an observation period before the experiment. Further selection criteria were similar milk production traits between cows (milk yield, fat yield, fat/protein ratio) and established lactation (>50 d in milk). However, the selected groups differed in parity (parity 1-3 and 3-5 in the small and large MFG groups, respectively), and the small MFG group was an average of 25 d in milk later in their lactation period. All cows were under the same nutritional management and environmental conditions. Here, we show that cows with the small or large MFG phenotype differed in their lipid metabolism in terms of the FA composition of the MFG core. Our results indicate that cows with the small MFG phenotype produced milk with higher concentrations of unsaturated FA despite being fed the same diet. We suggest that this characteristic of the small MFG phenotype is the result of increased uptake of long-chain FA from the blood circulation. A relationship between the degree of unsaturation and MFG size was also identified in preliminary studies across other species-namely, camels, sheep, and goats. These findings show the potential for on-farm selection of cows (and potentially other dairy species) based on MFG size to produce milk with improved nutrient composition. This could lead to purpose-specific separation of milk based on MFG size and FA profile, both known to alter the technological properties of milk.
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Affiliation(s)
- L Walter
- Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Victoria, Australia 3010; CSIRO Agriculture and Food, Werribee, Victoria, Australia 3030
| | - P Shrestha
- CSIRO Agriculture and Food, Black Mountain, Canberra, Australia 2601
| | - R Fry
- Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Victoria, Australia 3010
| | - B J Leury
- Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Victoria, Australia 3010
| | - A Logan
- CSIRO Agriculture and Food, Werribee, Victoria, Australia 3030.
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25
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Wei W, Jin Q, Wang X. Human milk fat substitutes: Past achievements and current trends. Prog Lipid Res 2019; 74:69-86. [DOI: 10.1016/j.plipres.2019.02.001] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/01/2019] [Accepted: 02/19/2019] [Indexed: 01/16/2023]
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26
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Luo J, Wang Z, Li Y, Chen C, Ren F, Guo H. The simulated in vitro infant gastrointestinal digestion of droplets covered with milk fat globule membrane polar lipids concentrate. J Dairy Sci 2019; 102:2879-2889. [DOI: 10.3168/jds.2018-15044] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 12/07/2018] [Indexed: 12/30/2022]
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27
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Le Guillou S, Laubier J, Péchoux C, Aujean E, Castille J, Leroux C, Le Provost F. Defects of the endoplasmic reticulum and changes to lipid droplet size in mammary epithelial cells due to miR-30b-5p overexpression are correlated to a reduction in Atlastin 2 expression. Biochem Biophys Res Commun 2019; 512:283-288. [PMID: 30879769 DOI: 10.1016/j.bbrc.2019.03.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 03/03/2019] [Indexed: 10/27/2022]
Abstract
During lactation, mammary epithelial cells secrete fat in the form of milk fat globules that originate from intracellular lipid droplets. These droplets may form de novo from the endoplasmic reticulum or be derived from existing lipid droplets; they then either grow because enzymes of triacylglycerol synthesis relocate from the reticulum to their surface, or due to fusion and fission with other droplets. The overexpression of miR-30b-5p in the developing mouse mammary gland impairs lactation, which includes an increase in lipid droplet size. This study was performed to understand the origin of this defect affecting lipid droplets observed in transgenic mice. Electron microscopy analyses revealed a fragmented and discontinued tubular network of endoplasmic reticulum in the mammary epithelial cells of transgenic mice. The milk fatty acid composition was modified, with lower levels of medium-chain saturated fatty acids and a proportional increase in long-chain monounsaturated fatty acids in transgenic versus wild-type mice. Further, investigations of microRNA targets revealed a significant downregulation of ATLASTIN 2 (a GTPase described as playing a key role in lipid droplet formation) due to miR-30b-5p overexpression. Our results suggest that the increase in lipid droplet size observed in the mammary epithelial cells of transgenic mice might result from changes to lipid droplet formation and secretion because of direct modifications to Atl2 expression and indirect changes to endoplasmic reticulum morphology resulting from the overexpression of miR-30b-5p.
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Affiliation(s)
- Sandrine Le Guillou
- GABI, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France.
| | - Johann Laubier
- GABI, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France.
| | - Christine Péchoux
- GABI, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France.
| | - Etienne Aujean
- GABI, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France.
| | - Johan Castille
- GABI, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France.
| | - Christine Leroux
- INRA, UMR1213 Herbivores, F-63122, Saint Genès Champanelle, France; UC Davis, Food Science and Technology Department, Davis, CA, 95616, USA.
| | - Fabienne Le Provost
- GABI, INRA, AgroParisTech, Université Paris-Saclay, 78350, Jouy-en-Josas, France.
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28
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Lopez C, Cauty C, Guyomarc'h F. Unraveling the Complexity of Milk Fat Globules to Tailor Bioinspired Emulsions Providing Health Benefits: The Key Role Played by the Biological Membrane. EUR J LIPID SCI TECH 2018. [DOI: 10.1002/ejlt.201800201] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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29
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Thermotropic phase behavior of milk sphingomyelin and role of cholesterol in the formation of the liquid ordered phase examined using SR-XRD and DSC. Chem Phys Lipids 2018; 215:46-55. [DOI: 10.1016/j.chemphyslip.2018.07.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 07/18/2018] [Accepted: 07/31/2018] [Indexed: 01/14/2023]
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30
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Cais-Sokolińska D, Rudzińska M. Short communication: Cholesterol oxidation products in traditional buttermilk. J Dairy Sci 2018; 101:3829-3834. [DOI: 10.3168/jds.2017-13942] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 01/03/2018] [Indexed: 01/22/2023]
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Cheng K, Ropers MH, Lopez C. The miscibility of milk sphingomyelin and cholesterol is affected by temperature and surface pressure in mixed Langmuir monolayers. Food Chem 2017; 224:114-123. [DOI: 10.1016/j.foodchem.2016.12.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 11/12/2016] [Accepted: 12/12/2016] [Indexed: 12/30/2022]
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33
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Karlsson MA, Langton M, Innings F, Wikström M, Lundh ÅS. Short communication: Variation in the composition and properties of Swedish raw milk for ultra-high-temperature processing. J Dairy Sci 2017; 100:2582-2590. [DOI: 10.3168/jds.2016-12185] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 12/21/2016] [Indexed: 11/19/2022]
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34
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Lipid domains in the milk fat globule membrane: Dynamics investigated in situ in milk in relation to temperature and time. Food Chem 2017; 220:352-361. [DOI: 10.1016/j.foodchem.2016.10.017] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 09/29/2016] [Accepted: 10/04/2016] [Indexed: 11/24/2022]
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Verardo V, Gómez-Caravaca AM, Arráez-Román D, Hettinga K. Recent Advances in Phospholipids from Colostrum, Milk and Dairy By-Products. Int J Mol Sci 2017; 18:ijms18010173. [PMID: 28106745 PMCID: PMC5297805 DOI: 10.3390/ijms18010173] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 12/31/2016] [Accepted: 01/10/2017] [Indexed: 02/07/2023] Open
Abstract
Milk is one of the most important foods for mammals, because it is the first form of feed providing energy, nutrients and immunological factors. In the last few years, milk lipids have attracted the attention of researchers due to the presence of several bioactive components in the lipid fraction. The lipid fraction of milk and dairy products contains several components of nutritional significance, such as ω-3 and ω-6 polyunsaturated fatty acids, CLA, short chain fatty acids, gangliosides and phospholipids. Prospective cohort evidence has shown that phospholipids play an important role in the human diet and reinforce the possible relationship between their consumption and prevention of several chronic diseases. Because of these potential benefits of phospholipids in the human diet, this review is focused on the recent advances in phospholipids from colostrum, milk and dairy by-products. Phospholipid composition, its main determination methods and the health activities of these compounds will be addressed.
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Affiliation(s)
- Vito Verardo
- Department of Chemistry and Physics (Analytical Chemistry Area), Research Centre for Agricultural and Food Biotechnology (BITAL), Agrifood Campus of International Excellence, ceiA3, University of Almería, Carretera de Sacramento s/n, 04120 Almería, Spain.
| | - Ana Maria Gómez-Caravaca
- Department of Analytical Chemistry, University of Granada, c/Fuentenueva s/n, 18071 Granada, Spain.
- Research and Development of Functional Food Centre (CIDAF), Health Science Technological Park (PTS) Granada, Avda. del Conocimiento s/n, EdificioBioregión, 18007 Granada, Spain.
| | - David Arráez-Román
- Department of Analytical Chemistry, University of Granada, c/Fuentenueva s/n, 18071 Granada, Spain.
- Research and Development of Functional Food Centre (CIDAF), Health Science Technological Park (PTS) Granada, Avda. del Conocimiento s/n, EdificioBioregión, 18007 Granada, Spain.
| | - Kasper Hettinga
- Dairy Science and Technology, Food Quality and Design Group, Wageningen University, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands.
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36
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Relationships between milks differentiated on native milk fat globule characteristics and fat, protein and calcium compositions. Animal 2017; 11:507-518. [DOI: 10.1017/s1751731116001646] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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37
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Wolanciuk A, Barłowska J, Brodziak A, Topyła B. Effect of stage of lactation and production season on
fat dispersion in the milk of cows of different breeds. ROCZNIKI NAUKOWE POLSKIEGO TOWARZYSTWA ZOOTECHNICZNEGO 2016. [DOI: 10.5604/01.3001.0013.5418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The aim of the study was to evaluate the effect of the stage of lactation and production season on fat
dispersion in the milk of cows of different breeds. A total of 738 milk samples were analysed, including
196 from Polish Black-and-White Holstein-Friesian cows, 168 from Jersey cows, 185 from Polish Red
cows, and 189 from White-Backed cows. Milk samples were collected individually from each cow in
two production seasons, i.e. spring/summer (May-July) and autumn/winter (December-March). Three
stages of lactation were distinguished: ≤120 days, 121 to 200 days, and >200 days. The percentage
content of fat and its dispersion (expressed as the mean surface area, circumference and mean diameter
of fat globules) were determined. The stage of lactation and the production season (linked to the
feeding season) were found to strongly influence the content and dispersion of milk fat. As lactation
progressed, the fat content of the milk and its dispersion increased. A significant (p≤0.01) decrease was
noted in the mean diameter and surface area of the fat globules. The fat globules obtained in the initial
stage of lactation were the largest (≤120 days – 2.90 μm). The milk produced in the autumn/winter
season had higher fat content and the mean size of the fat globules was significantly (p≤0.01) greater.
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Affiliation(s)
- Anna Wolanciuk
- University of Life Sciences in Lublin Faculty of Biology, Animal Science and Bioeconomy Department of Commodity Science and Processing of Raw Animal Materials
| | - Joanna Barłowska
- University of Life Sciences in Lublin Faculty of Biology, Animal Science and Bioeconomy Department of Commodity Science and Processing of Raw Animal Materials
| | - Aneta Brodziak
- University of Life Sciences in Lublin Faculty of Biology, Animal Science and Bioeconomy Department of Commodity Science and Processing of Raw Animal Materials
| | - Barbara Topyła
- University of Life Sciences in Lublin Faculty of Biology, Animal Science and Bioeconomy Department of Commodity Science and Processing of Raw Animal Materials
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38
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Argov-Argaman N, Hadaya O, Glasser T, Muklada H, Dvash L, Mesilati-Stahy R, Landau SY. Milk fat globule size, phospholipid contents and composition of milk from purebred and Alpine-crossbred Mid-Eastern goats under confinement or grazing condition. Int Dairy J 2016. [DOI: 10.1016/j.idairyj.2015.12.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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39
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Yao Y, Zhao G, Yan Y, Chen C, Sun C, Zou X, Jin Q, Wang X. Effects of freeze drying and spray drying on the microstructure and composition of milk fat globules. RSC Adv 2016. [DOI: 10.1039/c5ra22323g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Freeze drying and spray drying are conventional methods for converting milk into powder in the dairy industry.
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Affiliation(s)
- Yunping Yao
- State Key Laboratory of Food Science and Technology
- Synergetic Innovation Center of Food Safety and Nutrition
- School of Food Science and Technology
- Jiangnan University
- Wuxi 214122
| | - Guozhong Zhao
- State Key Laboratory of Food Science and Technology
- Synergetic Innovation Center of Food Safety and Nutrition
- School of Food Science and Technology
- Jiangnan University
- Wuxi 214122
| | - Yuanyuan Yan
- State Key Laboratory of Food Science and Technology
- Synergetic Innovation Center of Food Safety and Nutrition
- School of Food Science and Technology
- Jiangnan University
- Wuxi 214122
| | - Chen Chen
- State Key Laboratory of Food Science and Technology
- Synergetic Innovation Center of Food Safety and Nutrition
- School of Food Science and Technology
- Jiangnan University
- Wuxi 214122
| | - Cong Sun
- State Key Laboratory of Food Science and Technology
- Synergetic Innovation Center of Food Safety and Nutrition
- School of Food Science and Technology
- Jiangnan University
- Wuxi 214122
| | - Xiaoqiang Zou
- State Key Laboratory of Food Science and Technology
- Synergetic Innovation Center of Food Safety and Nutrition
- School of Food Science and Technology
- Jiangnan University
- Wuxi 214122
| | - Qingzhe Jin
- State Key Laboratory of Food Science and Technology
- Synergetic Innovation Center of Food Safety and Nutrition
- School of Food Science and Technology
- Jiangnan University
- Wuxi 214122
| | - Xingguo Wang
- State Key Laboratory of Food Science and Technology
- Synergetic Innovation Center of Food Safety and Nutrition
- School of Food Science and Technology
- Jiangnan University
- Wuxi 214122
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40
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41
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Logan A, Leis A, Day L, Øiseth SK, Puvanenthiran A, Augustin MA. Rennet gelation properties of milk: Influence of natural variation in milk fat globule size and casein micelle size. Int Dairy J 2015. [DOI: 10.1016/j.idairyj.2014.08.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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42
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Altered concentrate to forage ratio in cows ration enhanced bioproduction of specific size subpopulation of milk fat globules. Food Chem 2015; 179:199-205. [DOI: 10.1016/j.foodchem.2015.01.138] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 01/18/2015] [Accepted: 01/31/2015] [Indexed: 01/22/2023]
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43
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Mare's and cow's milk: promote similar metabolic effects and expression of innate markers in Caco-2 cells? Food Res Int 2015. [DOI: 10.1016/j.foodres.2015.04.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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44
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Cohen BC, Shamay A, Argov-Argaman N. Regulation of lipid droplet size in mammary epithelial cells by remodeling of membrane lipid composition-a potential mechanism. PLoS One 2015; 10:e0121645. [PMID: 25756421 PMCID: PMC4355593 DOI: 10.1371/journal.pone.0121645] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 01/06/2015] [Indexed: 01/16/2023] Open
Abstract
Milk fat globule size is determined by the size of its precursors—intracellular lipid droplets—and is tightly associated with its composition. We examined the relationship between phospholipid composition of mammary epithelial cells and the size of both intracellular and secreted milk fat globules. Primary culture of mammary epithelial cells was cultured in medium without free fatty acids (control) or with 0.1 mM free capric, palmitic or oleic acid for 24 h. The amount and composition of the cellular lipids and the size of the lipid droplets were determined in the cells and medium. Mitochondrial quantity and expression levels of genes associated with mitochondrial biogenesis and polar lipid composition were determined. Cells cultured with oleic and palmitic acids contained similar quantities of triglycerides, 3.1- and 3.8-fold higher than in controls, respectively (P < 0.0001). When cultured with oleic acid, 22% of the cells contained large lipid droplets (>3 μm) and phosphatidylethanolamine concentration was higher by 23 and 63% compared with that in the control and palmitic acid treatments, respectively (P < 0.0001). In the presence of palmitic acid, only 4% of the cells contained large lipid droplets and the membrane phosphatidylcholine concentration was 22% and 16% higher than that in the control and oleic acid treatments, respectively (P < 0.0001). In the oleic acid treatment, approximately 40% of the lipid droplets were larger than 5 μm whereas in that of the palmitic acid treatment, only 16% of the droplets were in this size range. Triglyceride secretion in the oleic acid treatment was 2- and 12-fold higher compared with that in the palmitic acid and control treatments, respectively. Results imply that membrane composition of bovine mammary epithelial cells plays a role in controlling intracellular and secreted lipid droplets size, and that this process is not associated with cellular triglyceride content.
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Affiliation(s)
- Bat-Chen Cohen
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Avi Shamay
- Animal Science Department, The Volcani Center, The Ministry of Agriculture, Rehovot, Israel
| | - Nurit Argov-Argaman
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Jerusalem, Israel
- * E-mail:
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45
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Determination of bioactive compounds in cream obtained as a by-product during cheese-making: Influence of cows' diet on lipid quality. Int Dairy J 2015. [DOI: 10.1016/j.idairyj.2014.11.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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46
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Influence of glucogenic dietary supplementation and reproductive state of dairy cows on the composition of lipids in milk. Animal 2015; 9:1008-15. [DOI: 10.1017/s1751731115000099] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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47
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Argov-Argaman N, Mesilati-Stahy R, Magen Y, Moallem U. Elevated concentrate-to-forage ratio in dairy cow rations is associated with a shift in the diameter of milk fat globules and remodeling of their membranes. J Dairy Sci 2014; 97:6286-95. [DOI: 10.3168/jds.2014-8174] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 06/26/2014] [Indexed: 11/19/2022]
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48
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Interactive Effects of Milk Fat Globule and Casein Micelle Size on the Renneting Properties of Milk. FOOD BIOPROCESS TECH 2014. [DOI: 10.1007/s11947-014-1362-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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49
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Guyomarc'h F, Zou S, Chen M, Milhiet PE, Godefroy C, Vié V, Lopez C. Milk sphingomyelin domains in biomimetic membranes and the role of cholesterol: morphology and nanomechanical properties investigated using AFM and force spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:6516-6524. [PMID: 24835749 DOI: 10.1021/la501640y] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Milk sphingomyelin (MSM) and cholesterol segregate into domains in the outer bilayer membrane surrounding milk fat globules. To elucidate the morphology and mechanical properties of theses domains, supported lipid bilayers with controlled molar proportions of MSM, dioleoylphosphatidylcholine (DOPC) and cholesterol were produced in buffer mimicking conditions of the milk aqueous phase. Atomic force microscopy imaging showed that (i) for T < 35 °C MSM segregated in gel phase domains protruding above the fluid phase, (ii) the addition of 20 mol % cholesterol resulted in smaller and more elongated l(o) phase domains than in equimolar MSM/DOPC membranes, (iii) the MSM/cholesterol-enriched l(o) phase domains were less salient than the MSM gel phase domains. Force spectroscopy measurements furthermore showed that cholesterol reduced the resistance of MSM/DOPC membrane to perforation. The results are discussed with respect to the effect of cholesterol on the biophysical properties of lipid membranes. The combination of AFM imaging and force mapping provides unprecedented insight into the structural and mechanical properties of milk lipid membranes, and opens perspectives for investigation of the functional properties of MSM domains during milk fat processing or digestion.
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50
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Logan A, Auldist M, Greenwood J, Day L. Natural variation of bovine milk fat globule size within a herd. J Dairy Sci 2014; 97:4072-82. [PMID: 24835967 DOI: 10.3168/jds.2014-8010] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 03/24/2014] [Indexed: 11/19/2022]
Abstract
Native milk fat globule (MFG) size, pH, total fat, protein, and lactose composition in milk from individual cows was examined in autumn and spring 2012 and autumn 2013. Mean MFG diameters ranged between 2.5 and 5.7 µm. Some cows were observed to consistently produce small or large MFG throughout the sampling period, though trends were not consistent across all cows. Small-MFG milk contained more total polar lipids; however, the relative proportion of individual polar lipids did not differ with MFG size, with the exception of phosphatidylcholine, which was greater in small-MFG milk. No significant correlation between MFG size and proximate composition, including calculated fat yield or pH, was found. This work revealed a natural cow-to-cow variation in MFG size exists, which could potentially be exploited to improve the functionality of milk for manufacturing and some products.
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Affiliation(s)
- A Logan
- CSIRO Animal, Food and Health Sciences, Werribee, Victoria, Australia 3030.
| | - M Auldist
- Department of Environment and Primary Industries, Ellinbank Centre, Farming Systems Research Division, Ellinbank, Victoria, Australia 3821
| | - J Greenwood
- Department of Environment and Primary Industries, Ellinbank Centre, Farming Systems Research Division, Ellinbank, Victoria, Australia 3821
| | - L Day
- CSIRO Animal, Food and Health Sciences, Werribee, Victoria, Australia 3030
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