Milk Lipids

Gordon, Michael H.

doi:10.1002/9781118534168.ch4

Cited by 5 publications

(2 citation statements)

References 85 publications

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“…Avoidance of dairy products is evident globally ( 1 , 2 ), where perceived or actual intolerance to bovine (cow) milk (CM) ( 3 ) impacts consumption behaviors ( 4 , 5 ). Dairy products are recognized as an important source of nutrients ( 6 ), including calcium and high-quality protein, which are essential for growth and development. Milk and dairy products are also an important source of dietary lipids, although there is continued debate on the impact of these lipids on cardiometabolic health risks ( 7 ).…”

Section: Introductionmentioning

confidence: 99%

Postprandial lipemic response in dairy-avoiding females following an equal volume of sheep milk relative to cow milk: A randomized controlled trial

et al. 2023

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BackgroundSheep milk (SM) is an alternate dairy source, which despite many similarities, has both compositional and structural differences in lipids compared to cow milk (CM). Studies are yet to examine the apparent digestibility of SM lipids, relative to CM, and the potential impact on the plasma lipidome.ObjectiveTo determine the response of the circulatory lipidome to equal volume servings of SM and CM, in females who avoid dairy products.MethodIn a double-blinded, randomized, cross-over trial, self-described dairy avoiding females (n = 30; 24.4 ± 1.1 years) drank SM or CM (650 mL; 33.4 vs. 21.3 g total lipid content; reconstituted from spray dried milk powders) following an overnight fast. Blood samples were collected at fasting and at regular intervals over 4 h after milk consumption. The plasma lipidome was analyzed by LC-MS and fatty acids were quantified by GC-FID.ResultsThe overall postprandial triglyceride (TG) response was similar between SM and CM. TG concentrations were comparable at fasting for both groups, however they were higher after CM consumption at 30 min (interaction milk × time p = 0.003), well before any postprandial lipemic response. This was despite greater quantities provided by SM. However, there were notable differences in the postprandial fatty acid response, with SM leading to an increase in short- and medium-chain fatty acids (MCFAs) (C6:0, C8:0, and C10:0) and several long-chain fatty acids (LCFAs) (C18:1 t11, c9, t11-CLA, and C20:0; interaction time × milk p < 0.05). This corresponded to a greater postprandial response for medium chain triglycerides (MCTs) C10:0, including TG(10:0/14:0/18:1), TG(16:0/10:0/12:0), and TG(16:0/10:0/14:0) (interaction time × milk p < 0.05).ConclusionsDespite a higher fat content, SM ingestion resulted in a greater circulating abundance of MCTs, without increasing total postprandial triglyceride response, when compared to CM. The greater abundance and postprandial appearance of MCTs may provide advantageous metabolic responses in children and adults.Unique identifier and registryU1111-1209-7768; https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=375324.

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Section: Introductionmentioning

confidence: 99%

Postprandial lipemic response in dairy-avoiding females following an equal volume of sheep milk relative to cow milk: A randomized controlled trial

et al. 2023

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“…Determination of fat became an important analysis in the dairy industry due to the significant role of MF. MF is presented in the form of triacylglycerols (TAGs), diacylglycerols, monoacylglycerols, cholesterol, free fatty acids, and phospholipids, accounting for 97.5%, 0.36%, 0.02%, 0.31%, 0.02%, and 0.6% of the total fat, respectively (Fox et al., 2015; Jensen, 2002; Gordon et al., 2013). TAGs are a main molecular form of MF containing 3 fatty acids (FAs) esterified to a glycerol backbone.…”

Section: Introductionmentioning

confidence: 99%

Effect of fat extraction methods on the fatty acids composition of bovine milk using gas chromatography

Moneeb

Hammam

Ahmed

et al. 2021

Food Science & Nutrition

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Milk fat is a complex natural fat and contains around 400 fatty acids. The objectives of this study were to extract fat from bovine milk using two different methods, including Bligh and Dyer and Mojonnier, and to determine the fatty acid content in the extracted fats using gas chromatography (GC). No differences (p > .05) were detected in the fat content and fatty acids content as a percentage of total fat (FA%TF) extracted using both methods. No differences (p > .05) were detected in some saturated fatty acids (SFAs) and unsaturated fatty acids (USFAs) extracted from both methods, such as C11:0 (undecylic acid), C16:0 (palmitic acid), C18:0 (stearic acid), C14:1 (myristoleic acid), and C16:1 (palmitoleic acid). However, the majority of SFAs were different (p < .05) in Mojonnier method as compared to Bligh and Dyer method and vice versa for USFAs. The short (6.54% vs. 5.95%) and medium (21.86% vs. 20.73%) chains FAs determined by GC were high in Mojonnier fat as compared to Bligh and Dyer fat, while the long‐chain FAs were higher in the last (66.61%) relative to Mojonnier fat (65.51%). This study found that Mojonneir method has resulted in fewer errors. In contrast, the Bligh and Dyer extraction method has more experimental error, which led to decreasing the total fat, as well as was not able to detect C9:0.

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Increased Dairy Product Intake Alters Serum Metabolite Profiles in Subjects at Risk of Developing Type 2 Diabetes

O’Connor

Leclercq

Julien

et al. 2019

Molecular Nutrition Food Res

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Scope Metabolomics is increasingly used to identify biomarkers of diet or chronic diseases, such as type 2 diabetes. Yet, metabolite signatures following dairy intake in hyperinsulinemic subjects have not been identified. The objective is to evaluate the effects of a high dairy diet (HD) for 6 weeks (4 servings or more per day), compared with an adequate dairy diet (AD) (2 servings or less per day), on serum metabolite profiles in hyperinsulinemic adults. Methods and results In this crossover trial, subjects are randomized to HD or AD for 6 weeks. Serum metabolites are assessed using GC/MS. Twenty‐six subjects completed the study. Levels of pentadecanoic acid, tyrosine and lathosterol are increased in HD, while 1,5‐anhydrosorbitol, myo‐inositol, 3‐aminoisobutyric acid and beta‐sitosterol are decreased (p < 0.05). Sorbitol levels are increased after AD, while hexanoic acid, lauric acid, l‐kynurenine, methionine, and benzoic acid levels are reduced (p < 0.05). Histidine, caprylic acid, nonanoic acid, decanoic acid, lauric acid, heptadecanoic acid, and benzoic acid levels are increased in HD compared to AD, while malic acid levels are increased in AD compared with HD (p < 0.05). Conclusion Higher dairy products intake modifies metabolite profiles in hyperinsulinemic subjects.

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Milk Lipids

Cited by 5 publications

References 85 publications

Postprandial lipemic response in dairy-avoiding females following an equal volume of sheep milk relative to cow milk: A randomized controlled trial

Postprandial lipemic response in dairy-avoiding females following an equal volume of sheep milk relative to cow milk: A randomized controlled trial

Effect of fat extraction methods on the fatty acids composition of bovine milk using gas chromatography

Increased Dairy Product Intake Alters Serum Metabolite Profiles in Subjects at Risk of Developing Type 2 Diabetes

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