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Cow milk protein

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https://www.readbyqxmd.com/read/28071015/the-changes-of-proteins-fractions-shares-in-milk-and-fermented-milk-drinks
#1
Genowefa Bonczar, Maria Walczycka, Iwona Duda
BACKGROUND: The aim of this research was to observe the changes which take place in the electrophoretic picture of milk proteins after pasteurisation and inoculation with different starter cultures (both traditional and probiotic). After incubation, the yoghurt, kefir, acidified milk, fermented Bifidobacterium bifidum drink and Lactobacillus acidophillus drink were chilled for 14 days to observe the changes which occurred. METHODS: The research materials were raw and pasteurised milk, as well as fermented milk- based drinks...
October 2016: Acta Scientiarum Polonorum. Technologia Alimentaria
https://www.readbyqxmd.com/read/28052885/a-micronutrient-fortified-young-child-formula-improves-the-iron-and-vitamin-d-status-of-healthy-young-european-children-a-randomized-double-blind-controlled-trial
#2
Marjolijn D Akkermans, Simone Rbm Eussen, Judith M van der Horst-Graat, Ruurd M van Elburg, Johannes B van Goudoever, Frank Brus
BACKGROUND: Iron deficiency (ID) and vitamin D deficiency (VDD) are common among young European children because of low dietary intakes and low compliance to vitamin D supplementation policies. Milk is a common drink for young European children. Studies evaluating the effect of milk fortification on iron and vitamin D status in these children are scarce. OBJECTIVE: We aimed to investigate the effect of a micronutrient-fortified young-child formula (YCF) on the iron and vitamin D status of young European children...
January 4, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28052802/characteristics-of-children-with-food-protein-induced-enterocolitis-and-allergic-proctocolitis
#3
Ebru Arik Yilmaz, Ozge Soyer, Ozlem Cavkaytar, Betul Karaatmaca, Betul Buyuktiryaki, Umit M Sahiner, Bulent E Sekerel, Cansin Sackesen
BACKGROUND: The aim of this study was to determine and compare the clinical and laboratory features of food protein-induced enterocolitis syndrome (FPIES) and food protein-induced allergic proctocolitis (FPIAP), and to provide information about the short-term prognoses. METHOD: Children diagnosed with FPIES or FPIAP between 2010 and 2015 were enrolled in this study. RESULTS: Overall, 64 infants (37 FPIAP, 27 FPIES) were evaluated, with the average age at the onset of symptoms being significantly lower in the patients with FPIAP than in the patients with FPIES (2 months [1-3 months] versus 4 months [1...
January 1, 2017: Allergy and Asthma Proceedings:
https://www.readbyqxmd.com/read/28052193/distribution-of-animal-drugs-among-curd-whey-and-milk-protein-fractions-in-spiked-skim-milk-and-whey
#4
Nancy W Shappell, Weilin L Shelver, Sara J Lupton, Wendy Fanaselle, Jane M Van Doren, Heldur Hakk
It is important to understand the partitioning of drugs in processed milk and milk products, when drugs are present in raw milk, in order to estimate the potential consumer exposure. Radioisotopically labelled erythromycin, ivermectin, ketoprofen, oxytetracycline, penicillin G, sulfadimethoxine, and thiabendazole were used to evaluate the distribution of animal drugs among rennet curd, whey, and protein fractions from skim cow milk. Our previous work reported the distribution of these same drugs between skim and fat fractions of milk...
January 4, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28041740/effects-of-dry-period-length-and-concentrate-protein-content-in-late-lactation-on-body-condition-score-change-and-subsequent-lactation-performance-of-thin-high-genetic-merit-dairy-cows
#5
A J Dale, P J Purcell, A R G Wylie, A W Gordon, C P Ferris
Improving body condition score of thin cows in late lactation is necessary, as cows that are thin at drying off exhibit decreased fertility postpartum and are at increased risk of disease and of being culled in the subsequent lactation. Offering a diet low in crude protein (CP) content in late lactation may offer potential to improve body condition score (BCS) at drying off, whereas imposing an extended dry period (EDP) has been advocated as another way to increase BCS at calving. To test these hypotheses, 65 thin cows (mean BCS 2...
December 29, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/28041733/glucose-requirements-of-an-activated-immune-system-in-lactating-holstein-cows
#6
S K Kvidera, E A Horst, M Abuajamieh, E J Mayorga, M V Sanz Fernandez, L H Baumgard
Accurately quantifying activated immune system energy requirements in vivo is difficult, but a better understanding may advance strategies to maximize animal productivity. Study objectives were to estimate whole-body glucose utilization following an i.v. endotoxin challenge. Lactating Holstein cows were jugular catheterized and assigned 1 of 3 bolus treatments: control (CON; 5 mL of saline; n = 6), lipopolysaccharide (LPS)-administered (LPS-C; 1.5 μg/kg of body weight; Escherichia coli 055:B5; n = 6), and LPS + euglycemic clamp (LPS-Eu; 1...
December 29, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/28041732/effect-of-proteolysis-during-cheddar-cheese-aging-on-the-detection-of-milk-protein-residues-by-enzyme-linked-immunosorbent-assay
#7
Katherine O Ivens, Joseph L Baumert, Robert L Hutkins, Steve L Taylor
Cow milk is a common allergenic food, and cow milk-derived cheese retains an appreciable level of allergenicity. The specific and sensitive detection of milk protein residues in foods is needed to protect milk-allergic consumers from exposure to undeclared milk protein residues contained in foods made with milk or milk-derived ingredients or made on shared equipment or in shared facilities with milk or milk-derived ingredients. However, during cheese ripening, milk proteins are degraded by chymosin and milk-derived and bacterial proteases...
December 29, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/28035151/effect-of-concentration-homogenization-and-stabilizing-salts-on-heat-stability-and-rheological-properties-of-cow-skim-milk-ultrafiltered-retentate
#8
Ganga Sahay Meena, Ashish Kumar Singh, Sanket Borad, Narender Raju Panjagari
Ultrafiltration (UF) of skimmed milk altered the composition of UF retentate and decreased the heat stability. Heat stability further reduced upon its subsequent homogenization or diafiltration. Poor heat stability of UF retentate restricts its processing at elevated temperatures. Therefore, this study was aimed to investigate the effect of protein concentration, homogenization and addition of stabilizing salts on the heat stability and rheological properties of UF retentates. Changes in the heat stability of fivefold homogenized UF retentate (5× HUFR) was studied in the pH range of 6...
November 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28012632/hepatic-expression-of-aminoadipate-semialdehyde-synthase-is-unchanged-by-postruminal-lysine-supply-in-lactating-dairy-cows
#9
H A Tucker, M D Hanigan, J Escobar, P H Doane, S S Donkin
Lysine supply is potentially limiting for milk production in dairy cows. The availability of Lys to the mammary gland and other tissues is a function of the quantity of metabolizable Lys supplied and Lys catabolism by the liver. Likewise, Lys catabolism may be influenced by Lys supply. This study evaluated the effect of increased postruminal Lys supply on the expression of aminoadipate semialdehyde synthase (AASS, a committing step in Lys catabolism in the liver) and ornithine transcarbamoylase and argininosuccinate synthase (key urea cycle enzymes that are responsive to protein supply)...
December 21, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/28012629/relationship-between-glucocorticoids-and-prolactin-during-mammary-gland-stimulation-in-dairy-cows
#10
B Ponchon, X Zhao, S Ollier, P Lacasse
The objectives of this study were to determine the role of glucocorticoids in the regulation of prolactin (PRL) release induced by mammary gland stimulation and to investigate whether the milk depression induced by glucocorticoids in dairy cows is due to a decrease in PRL release. In experiment 1, 8 dairy cows were used in a 4 × 4 Latin square design. Four hours after the morning milking, the cows received 1 of the following treatments: (1) a 5-min manual stimulation of the mammary gland; (2) an i.v. injection of 1 mg of dexamethasone; (3) 2 infusions of 2...
December 21, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/28007038/semi-quantitative-method-for-staphylococci-magnetic-detection-in-raw-milk
#11
Carla Margarida Duarte, Carla Carneiro, Susana Cardoso, Paulo Peixeiro Freitas, Ricardo Bexiga
Bovine mastitis is the most costly disease for dairy farmers, hence, control measures to prevent it are crucial for dairy farm sustainability. Staphylococcus aureus is considered a major mastitis pathogen because of its impact on milk quality and low cure rates. Prevention of S. aureus mastitis includes segregation of infected animals, whilst treatment of such animals should be performed for a longer time to improve cure rates. This makes identification of S. aureus infected quarters and animals of significant importance...
December 23, 2016: Journal of Dairy Research
https://www.readbyqxmd.com/read/28002937/effect-of-increasing-dietary-metabolizable-protein-on-nitrogen-efficiency-in-holstein-dairy-cows
#12
Muhammad Imran, Talat Naseer Pasha, Muhammad Qamer Shahid, Imran Babar, Muhammad Naveed Ul Haque
The objective of the study was to determine the effects of increasing levels of metabolizable protein (MP) on lactation performance and nitrogen (N) efficiencies in lactating dairy cows. Nine multiparous cows in mid lactation [113±25 days in milk (DIM)] received three treatments in a 3×3 Latin square design with a period length of 21 days. The treatments were three diets, designed to provide similar energy and increasing supply of MP (g/d)-2371 (low), 2561 (medium), and 2711 (high) with corresponding crude protein (CP) levels (%)-15...
November 24, 2016: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28002520/clinical-immunological-and-pathological-profile-of-infants-suffering-from-cow-s-milk-protein-allergy
#13
Elena Tătăranu, Smaranda Diaconescu, Camelia Geanina Ivănescu, Ioan Sârbu, Maria Stamatin
Cow's milk protein allergy (CMPA) is the most frequently encountered form of food allergy in pediatric patients and occurs secondary to cow's milk proteins (CMP) ingestion. The aim of this study is to define the profile of children suffering from CMPA and to describe the associated pathological findings. The authors performed a retrospective case-control study on 160 infants that presented with CMPA symptoms at "Sf. Maria" Emergency Clinical Hospital for Children, Iassy, Romania, between January 2013 and January 2015...
2016: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/27994970/in-vitro-gastrointestinal-digestion-study-of-a-novel-bio-tofu-with-special-emphasis-on-the-impact-of-microbial-transglutaminase
#14
Guangliang Xing, Xin Rui, Mei Jiang, Yu Xiao, Ying Guan, Dan Wang, Mingsheng Dong
We have developed a novel bio-tofu, made from mixed soy and cow milk (MSCM), using Lactobacillus helveticus MB2-1 and Lactobacillus plantarum B1-6 incorporated with microbial transglutaminase (MTGase) as coagulant. MTGase was added to improve the textural properties and suit for cooking. However, the effect of MTGase on the digestion of mixed-protein fermented by lactic acid bacteria was unclear. This study aimed at evaluating the effect of MTGase on protein digestion of bio-tofu under simulated gastrointestinal digestion condition...
2016: PeerJ
https://www.readbyqxmd.com/read/27992668/extensively-hydrolyzed-casein-formula-alone-or-with-l-rhamnosus-gg-reduces-%C3%AE-lactoglobulin-sensitization-in-mice
#15
Rosita Aitoro, Raffaele Simeoli, Antonio Amoroso, Lorella Paparo, Rita Nocerino, Claudio Pirozzi, Margherita Di Costanzo, Rosaria Meli, Carmen De Caro, Gianluca Picariello, Gianfranco Mamone, Antonio Calignano, Cathryn R Nagler, Roberto Berni Canani
BACKGROUND: Extensively hydrolyzed casein formula (EHCF) has been proposed for the prevention and is commonly used for the treatment of cow's milk allergy (CMA). The addition of the probiotic Lactobacillus rhamnosus GG (LGG) to EHCF may induces faster acquisition of tolerance to cow's milk. The mechanisms underlying this effect are largely unexplored. We investigated the effects of EHCF alone or in combination with LGG on β-lactoglobulin (BLG) sensitization in mice. METHODS: Three-weeks old C3H/HeOuJ mice were sensitized by oral administration of BLG using cholera toxin as adjuvant at weekly intervals for 5 weeks (sensitization period)...
December 19, 2016: Pediatric Allergy and Immunology
https://www.readbyqxmd.com/read/27988128/pathway-based-genome-wide-association-analysis-of-milk-coagulation-properties-curd-firmness-cheese-yield-and-curd-nutrient-recovery-in-dairy-cattle
#16
C Dadousis, S Pegolo, G J M Rosa, D Gianola, G Bittante, A Cecchinato
It is becoming common to complement genome-wide association studies (GWAS) with gene-set enrichment analysis to deepen the understanding of the biological pathways affecting quantitative traits. Our objective was to conduct a gene ontology and pathway-based analysis to identify possible biological mechanisms involved in the regulation of bovine milk technological traits: coagulation properties, curd firmness modeling, individual cheese yield (CY), and milk nutrient recovery into the curd (REC) or whey loss traits...
December 14, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27988127/the-effect-of-storage-conditions-on-the-composition-and-functional-properties-of-blended-bulk-tank-milk
#17
A O'Connell, A L Kelly, J Tobin, P L Ruegg, D Gleeson
The objective of this study was to investigate the effects of storage temperature and duration on the composition and functional properties of bulk tank milk when fresh milk was added to the bulk tank twice daily. The bulk tank milk temperature was set at each of 3 temperatures (2, 4, and 6°C) in each of 3 tanks on 2 occasions during two 6-wk periods. Period 1 was undertaken in August and September when all cows were in mid lactation, and period 2 was undertaken in October and November when all cows were in late lactation...
December 14, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27988126/effect-of-high-oleic-acid-soybeans-on-production-performance-milk-fatty-acid-composition-and-enteric-methane-emission-in-dairy-cows
#18
J C Lopes, M T Harper, F Giallongo, J Oh, L Smith, A M Ortega-Perez, S A Harper, A Melgar, D M Kniffen, R A Fabin, A N Hristov
The objective of this study was to investigate the effect of 3 soybean sources differing in fatty acid profile and processing method on productivity, milk composition, digestibility, rumen fermentation, and enteric methane emission in lactating dairy cows. The soybean sources were conventional, high-linoleic-acid variety extruded soybean meal (ESBM; 8.7% ether extract with 15% oleic and 54% linoleic acids); extruded Plenish (DuPont Pioneer, Johnston, IA), high-oleic-acid variety soybean meal (EPSBM; 8.4% ether extract with 73% oleic and 8% linoleic acids); and whole, heated Plenish soybeans (WPSB; 20...
December 14, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27988114/lactation-and-body-composition-responses-to-fat-and-protein-supplies-during-the-dry-period-in-under-conditioned-dairy-cows
#19
G Jaurena, J M Moorby
An experiment was designed to study the effect of precalving supplementation with protein (Pr) and rumen-inert fat (F) on body composition and subsequent milk production and composition. Forty Holstein-Friesian dairy cows were allocated to 1 of 4 dietary treatments in the dry period (DP) based on a first-cut ryegrass silage, with 6 mature (in their third or greater pregnancy) and 4 young (in their second pregnancy) cows per treatment. These were low Pr, low F (silage alone); low Pr, high F (silage with 10% rumen-inert fat, mixed on a dry matter basis); high Pr, low F [silage with 5% high-protein corn gluten meal (CGM)]; and high Pr, high F (silage with 5% CGM and 10% rumen-inert fat)...
December 14, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27988113/short-communication-analytical-method-and-amount-of-preservative-added-to-milk-samples-may-alter-milk-urea-nitrogen-measurements
#20
Holley L Weeks, Alexander N Hristov
Milk urea N (MUN) is used by dairy nutritionists and producers to monitor dietary protein intake and is indicative of N utilization in lactating dairy cows. Two experiments were conducted to explore discrepancies in MUN results provided by 3 milk processing laboratories using different methods. An additional experiment was conducted to evaluate the effect of 2-bromo-2-nitropropane-1, 3-diol (bronopol) on MUN analysis. In experiment 1, 10 replicates of bulk tank milk samples, collected from the Pennsylvania State University's Dairy Center over 5 consecutive days, were sent to 3 milk processing laboratories in Pennsylvania...
December 14, 2016: Journal of Dairy Science
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