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Selected dairy-related News Updates*

 

Upcoming meetings:

 

The 2018 annual meeting of the American Dairy Science Association will be held in Knoxville, Tennessee, USA (June 24-27).

 

The 2018 annual meeting of the NZ Institute of Food Science and Technology will be held in Hamilton, New Zealand (July 3-5).

 

 

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On 25 February 2015 Scilactis Ltd and James & Wells (intellectual property lawyers) held a an interactive workshop covering IP and R&D aspects of developing high-value products from raw materials, by-products, and waste: DEVELOPING VALUE ADDED PRODUCTS. The workshop was aimed at SMEs and held at the Waikato Innovation Park, Hamilton, NZ.

 

 

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Recent SciLactis science publications:


• Singh, K., K. Swanson, H. Henderson, R. Erdman and K. Stelwagen. 2014. The effect of milking reinitiation following extended non-milking periods on lactation in primiparous dairy cows. Journal of Dairy Science (in press).
• Murney, R., K. Stelwagen, T. T. Wheeler, J. K. Margerison and K. Singh. 2015. The effects of milking frequency on insulin-like growth factor I signaling within the mammary gland of dairy cows. Journal of Dairy Science 98: 5422-5428.
• Murney, R. K. Stelwagen, T. T. Wheeler, J. K. Margerison and K. Singh. 2015. Activation of signal transducer and activator of transcription 5 (STAT5) is linked to β1 integrin protein abundance in unilaterally milked bovine mammary glands. Journal of Dairy Science 98: 3133-3142.
• Murney, R., K. Stelwagen, T. T. Wheeler, J. K. Margerison and K. Singh. 2015. The effects of milking frequency in early lactation on milk yield, mammary cell turnover and secretory activity in grazing dairy cows. Journal of Dairy Science 98: 305-311.
• Smolenski, G. A., M. K. Broadhurst, K. Stelwagen, B. J Haigh and T. T. Wheeler. 2014. Host defence related responses in bovine milk during an experimentally induced Streptococcus uberis infection. Proteome Science 12: 19 (14 pages).
• Stelwagen, K. and K. Singh. 2014. The role of tight junctions in mammary gland function. Journal of Mammary Gland Biology and Neoplasia 19: 131-138.
• Reis, M.G., N. Roy, E.Bermingham, L. Ryan, R. Bibiloni, W. Young, L. Krause, B. Berger, M. North, K. Stelwagen and M.Reis. 2013. Impact of dietary dairy polar lipids on lipid metabolism in mice fed high-fat a diet. Journal of Agriculture and Food Chemistry 61:2729-2738
• Stelwagen, K., C. V. C. Phyn, S. R. Davis, J. Guinard-Flament, D. Pomiès, J. R. Roche, J. K. Kay. 2013. Reduced milking frequency: milk production and management implications. Journal of Dairy Science 96: 3401-3413.
• Guinard-Flament, J., P.G. Marnet, I. Verdier-Metz, C. Hurtaud, M.C. Montel, K. Stelwagen and D. Pomiès. 2013. La traite, un outil de pilotage du système et de maîtrise de la qualité du lait en élevage bovin laitier [Milking, a tool for herd and milk quality management in dairy farms]. Productions Animales, 26: 193-205.

 

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Research published in the scientific journal Plos One shows that seizures in autistic infants were 2.6-fold more frequent when they were fed a soy-based infant formula, compared to a dairy-based infant formula. This is likely related to the high levels of phytoestrogens present in soybeans. Unless, your baby does not tolerate a dairy-based formula, we recommend against feeding a soy-based formula. Moreover, the complex protein profile in dairy is much closer to that of human milk than soy protein.

 

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Milk is a truly unique biological fluid! Fat, including milk fat, consists of large fat molecules that often group together. These lipid complexes are broken down by enzymes (lipases) into free fatty acids and monoglyceridel. But here lies a problem. The water soluble lipase can only “nibble away” on the outside of the fat complexes, because fat repels water. This is where bile from the gall bladder comes in, by breaking down the larger lipid complexes into small ones, thus increasing the surface area for the lipase enzymes to attack. Now, Australian Research (Salantinig et al. 2013. ACS Nano 7: 10904-10911) has shown that milk fat complexes upon entering the digestive tract self-assemble into smaller units (nano structures). Thus greatly increasing the surface area and facilitating lipid breakdown by lipases. Especially in the neonate, which has suboptimal bile production, this is indeed a very handy trick from Mother Nature.


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SciLactis Ltd is now a member of Natural Products New Zealand (NPNZ), the national industry organisation representing the natural products, functional foods, complementary medicines, cosmeceuticals and nutraceuticals industries.

 

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Animal Ethics Applications: SciLactis Ltd is now registered with the Ministry of Primary Industries of New Zealand (MPI) to apply for Animal Ethics Approval for trials. This means that we can handle all the paper work for clients that want conduct field studies.

 

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Dr Stelwagen of SciLactis was an invited speaker at the 2013 Annual Conference of Natural Products New Zealand in Auckland, NZ, and high-lighted the bioactive properties and value-add opportunities of milk and colostrum in a speech entitled: "Milk: Mother Nature's ready-to-eat meal (RTM)".

 

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In December 2012 Dr Stelwagen of SciLactis Ltd gave an invited talk on "Milk removal and the innate immune system" at the Lactation Research in Mammals and Humans: The Mammary Gland in Health and Disease Symposium at Uppsala University in Sweden.

 

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Dr Kerst Stelwagen of SciLactis Ltd is now an Editor of the prestigious international scientific journal Journal of Dairy Science.

 

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In August 2010 the 10th International Symposium on the Biology of Lactation in Farm Animals was held in Heraklion, on the Greek isle of Crete. The symposium was chaired by Dr Kerst Stelwagen (SciLactis Ltd) and featured a range of international speakers covering topics ranging from epigenetic regulation of lactation to management of lactation in dairy cows and milk-derived bioactives. Full papers are published in the March 2012 issue of the journal Animal.

 

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The milk whey protein lactoferrin has an amazing range of biological activities, including iron binding and transport, antibacterial and immune stimulating properties. Now anti-carcinogenic activity can be added to the list. Portuguese researchers found that lactoferrin decreased cell viability and by approx. 50% and cell proliferation by 40 to 64% in human breast cancer cell lines (Duarte et al. 2011. J.Dairy Sci. 94:66-76)
 


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It is commonly understood that saturated fats are adversely related to cardiovascular health (CVD). Whilst milk is high in saturated fats, their effect on CVD is at best inconclusive, after the results of a series of international studies were reviewed. Interestingly, it may be of importance at which position fatty acids are attached to the glycerol backbone. The sn-2 position of palmitic acid (16:0) in dairy triglycerides, means that the formation of adverse insoluble calcium soaps in the intestines are prevented (German et al. 2009. Eur J Nutr 38: 191-203)
 


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Calcium is an essential mineral involved in many biological processes in the body. Its role in bone formation and maintenance is undeniable and dietary intake of calcium is critical. In a recent study in rats, by Purdue university researchers, it was shown that calcium derived from dairy products was significantly more effective that that supplied as a calcium carbonate supplement., highlighting the higher bioavailability of dairy-derived calcium (Weaver et al. 2009. J Bone Miner Res 24: 1411-1419)
 


* Every effort is made to accurately report the information appearing on this page, however SciLactis Ltd is not liable for: 1) any inadvertent inaccuracies presented on this page, 2) how this information is used, for any purpose whatsoever, by any other party, and 3) any consequences, regardless of their nature, as a result of any other party utilizing or acting upon the information provided on this page.