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Milk phosphate

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https://www.readbyqxmd.com/read/28915420/determination-of-eight-quinolones-in-milk-using-immunoaffinity-microextraction-in-a-packed-syringe-and-liquid-chromatography-with-fluorescence-detection
#1
Xinda Zhang, Cuicui Wang, Linyan Yang, Wei Zhang, Jing Lin, Cun Li
We have established a new, highly selective, and sensitive method for the determination of eight quinolones (QNs) in milk: danofloxacin, enrofloxacin, orbifloxacin, norfloxacin, ofloxacin, lomefloxacin, fleroxacin, and ciprofloxacin. The method uses immunoaffinity microextraction in a packed syringe and liquid chromatography with fluorescence detection (IA-MEPS-LC-FLD). Traditionally, QN residues are determined by liquid-liquid extraction (LLE) and solid phase extraction (SPE) sample preparation techniques; however, these methods are time-consuming and require large quantities of organic solvents...
September 8, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28912505/biomimetic-silica-nanoparticles-prepared-by-a-combination-of-solid-phase-imprinting-and-ostwald-ripening
#2
Elena Piletska, Heersh Yawer, Francesco Canfarotta, Ewa Moczko, Katarzyna Smolinska-Kempisty, Stanislav S Piletsky, Antonio Guerreiro, Michael J Whitcombe, Sergey A Piletsky
Herein we describe the preparation of molecularly imprinted silica nanoparticles by Ostwald ripening in the presence of molecular templates immobilised on glass beads (the solid-phase). To achieve this, a seed material (12 nm diameter silica nanoparticles) was incubated in phosphate buffer in the presence of the solid-phase. Phosphate ions act as a catalyst in the ripening process which is driven by differences in surface energy between particles of different size, leading to the preferential growth of larger particles...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28888611/comparison-of-mammary-lipid-metabolism-in-dairy-cows-and-goats-fed-diets-supplemented-with-starch-plant-oil-or-fish-oil
#3
L Bernard, P G Toral, Y Chilliard
A direct comparison of cow and goat performance and milk fatty acid (FA) responses to diets known to induce milk fat depression in the bovine has suggested interspecies differences in rumen and mammary lipid metabolism. Thus, this study was conducted to infer some potential mechanisms responsible for the differences in mammary lipogenesis due to diet and ruminant species. To meet this objective, 12 cows and 15 goats were fed a basal diet (control), a similar diet supplemented with 2.2% fish oil (FO), or a diet containing 5...
September 6, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28880045/-factors-influencing-first-colostrum-calcium-concentration-in-holstein-friesian-cows-and-the-relationship-to-postpartum-calcium-concentration
#4
Maria Karl, Rudolf Staufenbiel
OBJECTIVE: To investigate the factors that affect the calcium content of the first colostrum (milk exclusively of the first withdrawal) and the relationship to the blood calcium concentration. We tested the hypotheses that the lactation number is the main influence factor and that there is a relationship to the postpartum serum calcium concentration. MATERIAL AND METHODS: An observational study was conducted from April 2012 to March 2013 at a commercial dairy farm (2278 Holstein-Friesian cows)...
September 5, 2017: Tierärztliche Praxis. Ausgabe G, Grosstiere/Nutztiere
https://www.readbyqxmd.com/read/28839490/effects-of-prenatal-consumption-of-caprine-milk-oligosaccharides-on-mice-mono-associated-with-bifidobacterium-bifidum-agr2166
#5
Caroline Thum, Kikuji Itoh, Wayne Young, Adrian Cookson, Warren McNabb, Nicole Roy
BACKGROUND: Prenatal consumption of oligosaccharides are associated with changes in the maternal gastrointestinal tract (GIT) microbiota with health consequences for the offspring. It has previously been demonstrated that caprine milk oligosaccharides (CMO) stimulate the growth and fermentation rate of Bifidobacterium bifidum AGR2166. OBJECTIVE: The objective of this study was to examine the effects of B. bifidum AGR2166 and prenatal consumption of CMO, alone or in combination, on the dam's large intestine, foetal development and ability of B...
2017: Open Microbiology Journal
https://www.readbyqxmd.com/read/28837070/mechanisms-of-antimicrobial-action-of-cinnamon-and-oregano-oils-cinnamaldehyde-carvacrol-2-5-dihydroxybenzaldehyde-and-2-hydroxy-5-methoxybenzaldehyde-against-mycobacterium-avium-subsp-paratuberculosis-map
#6
Stella W Nowotarska, Krzysztof Nowotarski, Irene R Grant, Christopher T Elliott, Mendel Friedman, Chen Situ
The antimicrobial modes of action of six naturally occurring compounds, cinnamon oil, cinnamaldehyde, oregano oil, carvacrol, 2,5-dihydroxybenzaldehyde, and 2-hydroxy-5-methoxybenzaldehyde, previously found to inhibit the growth of Mycobacterium avium subsp. paratuberculosis (Map) reported to infect food animals and humans and to be present in milk, cheese, and meat, were investigated. The incubation of Map cultures in the presence of all six compounds caused phosphate ions to leak into the extracellular environment in a time- and concentration-dependent manner...
August 24, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28828525/maternal-consumption-of-quinine-containing-sodas-may-induce-g6pd-crises-in-breastfed-children
#7
S Bichali, D Brault, C Masserot, C Boscher, M L Couec, G Deslandes, S Pissard, G Leverger, C Vauzelle, E Elefant, J C Rozé, A Cortey, Alexis Chenouard
Glucose-6-phosphate dehydrogenase (G6PD) deficiency is the most common human enzyme defect often presenting with neonatal jaundice and/or hemolytic anemia. G6PD hemolytic events are linked with exposure to a pro-oxidant agent. We here report three cases of initial G6PD crises in breastfed children secondary to maternal consumption of a tonic drink which contains quinine. Quinine was found in breast milk of one of the mothers after she consumed tonic water. CONCLUSION: The amount of quinine that is transmitted through breast milk appears to be sufficient to induce G6PD crises in breastfed children...
August 21, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28825541/determination-of-bovine-lactoferrin-in-food-by-hplc-with-a-heparin-affinity-column-for-sample-preparation
#8
Yin Zhang, Fei Lou, Wei Wu, Xin Dong, Jia Ren, Qiuguang Shen
An HPLC method was developed for the quantitative determination of bovine lactoferrin (bLF) in sterilized milk, modified milk, fermented milk, infant formula, adult formula, rice cereal, vitamin function drink, and protein powder products. bLF was first extracted with a phosphate buffer (pH 8), underwent cleanup in a heparin affinity column, and was detected by HPLC with a C4 column and diode-array detector at a wavelength of 280 nm. The proposed method provided a linear detection range of 10.0-1000 μg/mL with an LOD of 0...
January 1, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28756326/bovine-serum-albumin-and-skim-milk-improve-boar-sperm-motility-by-enhancing-energy-metabolism-and-protein-modifications-during-liquid-storage-at-17%C3%A2-%C3%A2-c
#9
Jieli Fu, Yuhua Li, Lirui Wang, Linqing Zhen, Qiangzhen Yang, Peifei Li, Xinhong Li
Both bovine serum albumin (BSA) and skim-milk have been reported to improve sperm quality, primarily by enhancing sperm motility, but the underlying molecular mechanism remains unknown. In this study, boar semen samples were collected and diluted with Androstar(®) Plus extender containing different concentrations (0, 2, 4 g/l) of BSA and skim-milk. On days 0, 3, 5 and 7, the sperm motility parameters were determined using computer-assisted sperm analysis (CASA), and the ATP concentrations, glyceraldehyde-3-phosphate dehydrogenase (GAPDH) activity and mitochondrial membrane potential were evaluated using commercial kits...
July 21, 2017: Theriogenology
https://www.readbyqxmd.com/read/28747832/effects-of-various-calcium-powders-as-replacers-for-synthetic-phosphate-on-the-quality-properties-of-ground-pork-meat-products
#10
Su Min Bae, Min Guk Cho, Jong Youn Jeong
The aim of this study was to identify the optimal and superior type of natural calcium for replacing phosphate in cooked ground pork products. To achieve this, 0.5% eggshell calcium (ESC), oyster shell calcium (OSC), marine algae calcium (MAC), or milk calcium (MC) was added to ground pork meat products. The effect of this substitution was studied by comparing the substituted products with products containing 0.3% phosphate blend (control). ESC was considered an ideal phosphate replacer for minimizing the cooking loss, which likely resulted from the increase in the pH of the product...
2017: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/28712055/potential-of-casein-as-a-carrier-for-biologically-active-agents
#11
REVIEW
Tomasz Konrad Głąb, Janusz Boratyński
Casein is the collective name for a family of milk proteins. In bovine milk, casein comprises four peptides: αS1, αS2, β, and κ, differing in their amino acid, phosphorus and carbohydrate content but similar in their amphiphilic character. Hydrophilic and hydrophobic regions of casein show block distribution in the protein chain. Casein peptides carry negative charge on their surface as a result of phosphorylation and tend to bind nanoclusters of amorphous calcium phosphate. Due to these properties, in suitable conditions, casein molecules agglomerate into spherical micelles...
August 2017: Topics in Current Chemistry (Journal)
https://www.readbyqxmd.com/read/28690057/effects-of-depleting-ionic-strength-on-31-p-nuclear-magnetic-resonance-spectra-of-micellar-casein-during-membrane-separation-and-diafiltration-of-skim-milk
#12
Mattia Boiani, Padraig McLoughlin, Mark A E Auty, Richard J FitzGerald, Phil M Kelly
Membrane separation processes used in the concentration and isolation of micellar casein-based milk proteins from skim milk rely on extensive permeation of its soluble serum constituents, especially lactose and minerals. Whereas extensive literature exists on how these processes influence the gross composition of milk proteins, we have little understanding of the effects of such ionic depletion on the core structural unit of micellar casein [i.e., the casein phosphate nanocluster (CPN)]. The (31)P nuclear magnetic resonance (NMR) is an analytical technique that is capable of identifying soluble and organic forms of phosphate in milk...
September 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28651380/utilization-of-acid-pre-treated-coconut-dregs-as-a-substrate-for-production-of-detergent-compatible-lipase-by-bacillus-stratosphericus
#13
Nur Bainun Mohd Zin, Busyra Mohamad Yusof, Siti Nurbaya Oslan, Helmi Wasoh, Joo Shun Tan, Arbakariya B Ariff, Murni Halim
In recent years, many efforts have been directed to explore the methods to reduce the production costs of industrial lipase by improving the yield and the use of low-cost agricultural wastes. Coconut dregs, which is a lignocellulosic by-product from coconut oil and milk processing plants, is rich in cellulose (36%) and crude fat (9%). A newly isolated Bacillus stratosphericus has been demonstrated to perform cellulose hydrolysis on coconut dregs producing fermentable sugars. The highest extracellular lipase activity of 140 U/mL has been achieved in submerged fermentation with acid pre-treated coconut dregs...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28647329/structural-changes-induced-by-high-pressure-processing-in-micellar-casein-and-milk-protein-concentrates
#14
Lee Cadesky, Markus Walkling-Ribeiro, Kyle T Kriner, Mukund V Karwe, Carmen I Moraru
Reconstituted micellar casein concentrates and milk protein concentrates of 2.5 and 10% (wt/vol) protein concentration were subjected to high-pressure processing at pressures from 150 to 450 MPa, for 15 min, at ambient temperature. The structural changes induced in milk proteins by high-pressure processing were investigated using a range of physical, physicochemical, and chemical methods, including dynamic light scattering, rheology, mid-infrared spectroscopy, scanning electron microscopy, proteomics, and soluble mineral analyses...
September 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28628402/calcium-bioavailability-from-mineral-waters-with-different-mineralization-in-comparison-to-milk-and-a-supplement
#15
Theresa Greupner, Inga Schneider, Andreas Hahn
OBJECTIVE: The aim of the present study was to compare the bioavailability of calcium from 3 mineral waters with different concentrations of minerals with that of milk and a calcium supplement. METHODS: A single-center, randomized controlled trial with a crossover design with 21 healthy men and women was conducted at the Institute of Food Science and Human Nutrition, Leibniz University Hannover. The participants consumed the 5 test products providing 300 mg of calcium each on 5 examination days with 1-week wash-out phases in between...
July 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28620248/relative-gene-expression-of-fatty-acid-synthesis-genes-at-60-days-postpartum-in-bovine-mammary-epithelial-cells-of-surti-and-jafarabadi-buffaloes
#16
Mamta Janmeda, Vishnu Kharadi, Gaurav Pandya, Balkrishna Brahmkshtri, Umed Ramani, Kuldeep Tyagi
AIM: Aim of the study was to study the relative gene expression of genes associated with fatty acid synthesis at 60 days postpartum (pp) in bovine mammary epithelial cells (MECs) of Surti and Jafarabadi buffaloes. MATERIALS AND METHODS: A total of 10 healthy Surti and Jafarabadi buffaloes of each breed were selected at random from Livestock Research Station, Navsari and Cattle Breeding Farm, Junagadh, Gujarat, respectively, for this study. Milk sample was collected from each selected buffalo at day 60 pp from these two breeds to study relative gene expression of major milk fat genes using non-invasive approach of obtaining primary bovine MECs (pBMEC) from milk samples...
May 2017: Veterinary World
https://www.readbyqxmd.com/read/28601327/milk-fat-globule-epidermal-growth-factor-factor-viii-attenuates-sepsis-induced-acute-kidney-injury
#17
Cindy Cen, Monowar Aziz, Weng-Lang Yang, Mian Zhou, Jeffrey M Nicastro, Gene F Coppa, Ping Wang
BACKGROUND: Acute kidney injury (AKI) is most commonly caused by sepsis in critically ill patients, and it is associated with high morbidity and mortality. The pathophysiology of sepsis-induced AKI is generally accepted to include direct inflammatory injury, endothelial cell dysfunction, and apoptosis. Milk fat globule-epidermal growth factor-factor VIII (MFG-E8) is a secretory glycoprotein with a known role in the enhancement of apoptotic cell clearance and regulation of inflammation...
June 1, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28594955/inorganic-salts-and-intracellular-polyphosphate-inclusions-play-a-role-in-the-thermotolerance-of-the-immunobiotic-lactobacillus-rhamnosus-crl-1505
#18
María A Correa Deza, Mariana Grillo-Puertas, Susana Salva, Viviana A Rapisarda, Carla L Gerez, Graciela Font de Valdez
In this work, the thermotolerance of Lactobacillus rhamnosus CRL1505, an immunobiotic strain, was studied as a way to improve the tolerance of the strain to industrial processes involving heat stress. The strain displayed a high intrinsic thermotolerance (55°C, 20 min); however, after 5 min at 60°C in phosphate buffer a two log units decrease in cell viability was observed. Different heat shock media were tested to improve the cell survival. Best results were obtained in the mediumcontaining inorganic salts (KH2PO4, Na2HPO4, MnSO4, and MgSO4) likely as using 10% skim milk...
2017: PloS One
https://www.readbyqxmd.com/read/28559627/physico-chemical-functional-and-rheological-properties-of-milk-protein-concentrate-60-as-affected-by-disodium-phosphate-addition-diafiltration-and-homogenization
#19
Ganga Sahay Meena, Ashish Kumar Singh, Sumit Arora, Sanket Borad, Rajan Sharma, Vijay Kumar Gupta
Ultrafiltration and diafiltration of skim milk altered delicate salt equilibrium and composition of 5× UF retentate (5× UFR), and thus adversely affected the reconstitutional and functional properties of milk protein concentrate (MPC) powders. It might be due to interaction and aggregation of proteins during spray drying. Therefore, this study was envisaged to investigate the effect of disodium phosphate (DSP) addition, diafiltration and homogenization of retentates on physico-chemical, functional and rheological properties of MPC60 powders...
May 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28524011/effects-of-heating-and-calcium-and-phosphate-mineral-supplementation-on-the-physical-properties-of-rennet-induced-coagulation-of-camel-and-cow-milk-gels
#20
Mohammad Kamal, Mohammed Foukani, Romdhane Karoui
The physical properties of rennet-induced coagulation of preheated camel and cow milk gels (50 and 70 °C for 10 min) enriched with calcium chloride (CaCl2) and hydrogen phosphate dihydrate (Na2HPO42H2O) were evaluated using the dynamic low amplitude oscillatory shear analysis. The storage modulus (G') and loss modulus (G") of camel milk gels showed significant (P < 0·05) lower values than those of cow milk gels. The preheating of camel milk at 50 °C affected negatively the gelation properties, while the preheating at 70 °C prevented the formation of rennet-induced milk gels...
May 2017: Journal of Dairy Research
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