The Composition and Structure of Milk Lipids

Christie, William W.

doi:10.1007/978-94-010-9231-9_1

Cited by 89 publications

(95 citation statements)

References 169 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the bovine, the proportion of C16:0, C16:1 cis, and C18:2 was higher at the sn-2 position than in the total FA content, with C16:1 cis and C18:2 being the highest. This conforms to previous observations [1], where the affinity of the human LPAAT alpha was C16:0~C16:1~C18:2 > C18:3 > C20:4. However, the affinity changed with the substrate availability.…”

Section: Discussionsupporting

confidence: 93%

“…In general, the total FA compositions of milk fat from bovine and ovine agree with previous reports [1,9]. However, these reports did not contrast animals fed the same diet and therefore it is difficult to make comparisons on the nature of the differences between species.…”

Section: Discussionsupporting

confidence: 87%

“…Bovine and ovine milks have been reported to differ in the proportions of FA at the sn-2 position [1,9], with bovine milk fat having a higher percentage of C16:0 and a lower percentage of unsaturated FA, such as C18:2 and C18:3, than ovine milk fat. To evaluate differences in stereochemistry of milk fat, nine Holstein cows and eight Suffolk ewes were fed a similar diet for a period of ten days, and milk samples were collected and analyzed for total FA and sn-2 FA composition.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparative composition of total and sn-2 fatty acids in bovine and ovine milk fat

Mistry

DePeters

Medrano

2002

Lait

View full text Add to dashboard Cite

-Similar diets were fed to cattle and sheep to compare the total and the sn-2 fatty acid (FA) composition of milk fat. The study confirmed that substrate availability in the bovine and ovine mammary gland is a determining factor in the sn-2 FA composition. The acyltransferase that esterifies the FA at the sn-2 position is specific for FA of chain length C14 to C18 and has a reduced affinity for short chain FA in cattle and sheep. fatty acid / sn-2 / triglyceride composition / lysophosphatidic acid acyltransferase Résumé -Comparaison de la composition du lait en acides gras totaux et sn-2 chez les bovins et les ovins. L'étude a confirmé que la disponibilité du substrat dans la glande mammaire des bovins et des ovins est un facteur déterminant de la composition en acide gras en position sn-2 des matières grasses du lait. L'acyltransférase qui estérifie les acides gras à la position sn-2 agit surtout sur les acides gras de type C14 à C18, et n'a qu'une action réduite sur les acides gras à chaîne courte, chez les bovins et les ovins.acide gras / sn-2 / composition en triglycéride / lysophosphatidique acide acyltransférase

show abstract

Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Comparative composition of total and sn-2 fatty acids in bovine and ovine milk fat

Mistry

DePeters

Medrano

2002

Lait

View full text Add to dashboard Cite

show abstract

“…), milk has special characteristics, i.e. composition and structure of the constituents [2,3]. Although milk is an important product, regarding the high nutritive value of its constituents, mammals usually do not consume it post weaning.…”

Section: Introductionmentioning

confidence: 99%

“…The size of natural milk fat globules ranges from 0.2 to 15 µm with a volume-weighted diameter of about 4 µm depending on cow breed and season [5]. They are composed mainly of 98% triacylglycerols, at least 200 of which have been identified [3,6]. Natural milk fat globules are surrounded by a biological membrane, the milk fat globule membrane (MFGM).…”

Section: Introductionmentioning

confidence: 99%

Focus on the supramolecular structure of milk fat in dairy products

Lopez¹

2005

Reprod. Nutr. Dev.

116

View full text Add to dashboard Cite

-Bovine fat is dispersed in raw milk as natural milk fat globules, with an average diameter of 4 µm, which are enveloped in a biological membrane, the milk fat globule membrane (MFGM). However, dairy processes modify the supramolecular structure and the surface composition of milk fat. Thus, milk fat is present in many dairy products under various forms. In this study, we focused on the fact that natural milk fat globules are rarely consumed in their native state, i.e. in fresh raw milk. In most drinking milks, fat globules are homogenised in order to avoid their rising at the surface of the products. Furthermore, fat globules are heat treated to avoid the growth of micro-organisms. As a consequence of the technological process applied, the volume-weighted average diameter of fat globules in drinking milks is in the range 0.2-0.5 µm. Homogenisation of fat globules led to the partial disruption of the MFGM and to the adsorption of milk proteins. Moreover, this study showed that in cheeses, milk fat can be dispersed as (i) fat globules with the MFGM, (ii) aggregates of fat globules, (ii) homogenised fat globules, (iii) free fat and (iv) a combination of different phases and structures. The knowledge of the supramolecular structure of milk fat in dairy products is of primary importance regarding its technological, sensorial and nutritional properties. milk fat / microstructure / confocal laser scanning microscopy

show abstract

Maternal touch and feed as critical regulators of behavioral and stress responses in the offspring

Walker

2010

Developmental Psychobiology

View full text Add to dashboard Cite

For half a century, Seymour Levine's pioneering work on the interactions between mother and infant have helped us understand the critical early factors that shape physiology and behavior in the adult offspring. The work from my laboratory described in this review was based on many experiments by Levine and coworkers demonstrating that the quantity and quality of maternal milk and of maternal-infant contact influence different aspects of the hypothalamus-pituitary-adrenal (HPA) activity in the neonate. We have extended this work by showing that maternal high-fat feeding during the prenatal and lactational period blunts stress responsiveness in neonatal pups, in part mediated by increased circulating leptin levels in the offspring. The blunting of stress responses during this specific neonatal period might be beneficial to prevent the negative effects of exaggerated glucocorticoid secretion on the developing brain. In line with Levine's previous work, we found that maternal licking of the pups reduced stress responsiveness and inflammation in pups subjected to modest repeated pain during the first weeks of life and that it also blunted adult sensitivity to thermal pain. These studies have important implications for human infants as mechanisms aimed at reducing stress responsiveness can be considered protective to the developing brain from exaggerated and untimely neuroendocrine and sympathetic stimulation. Non-invasive interventions targeted at maternal nutrition and maternal care are relatively easy to implement and might have a significant effect on the health outcome of the offspring, particularly in a vulnerable population of term and pre-term babies.

show abstract

The Composition and Structure of Milk Lipids

Cited by 89 publications

References 169 publications

Comparative composition of total and sn-2 fatty acids in bovine and ovine milk fat

Comparative composition of total and sn-2 fatty acids in bovine and ovine milk fat

Focus on the supramolecular structure of milk fat in dairy products

Maternal touch and feed as critical regulators of behavioral and stress responses in the offspring

Contact Info

Product

Resources

About