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Casein protein

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https://www.readbyqxmd.com/read/28330303/bio-prospecting-of-cuttle-fish-waste-and-cow-dung-for-the-production-of-fibrinolytic-enzyme-from-bacillus-cereus-ind5-in-solid-state-fermentation
#1
Gurupatham Devadhasan Biji, Arumugaperumal Arun, Eswaran Muthulakshmi, Ponnuswamy Vijayaraghavan, Mariadhas Valan Arasu, Naif Abdullah Al-Dhabi
The process parameters governing the production of fibrinolytic enzyme in solid state fermentation employing Bacillus cereus IND5 and using cuttle fish waste and cow dung substrate were optimized. The pH value of the medium, moisture content, sucrose, casein and magnesium sulfate were considered for two-level full factorial design and pH, casein and magnesium sulfate were identified as the important factors for fibrinolytic enzyme production. Central composite design was applied to investigate the interactive effect among variables (pH, casein and magnesium sulfate) and response surface plots were created to find the pinnacle of process response...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330103/profiling-and-production-of-hemicellulases-by-thermophilic-fungus-malbranchea-flava-and-the-role-of-xylanases-in-improved-bioconversion-of-pretreated-lignocellulosics-to-ethanol
#2
Manju Sharma, Chhavi Mahajan, Manpreet S Bhatti, Bhupinder Singh Chadha
This study reports thermophilic fungus Malbranchea flava as a potent source of xylanase and xylan-debranching accessory enzymes. M. flava produced high levels of xylanase on sorghum straw containing solidified culture medium. The optimization of culture conditions for production of hemicellulases was carried out using one factor at a time approach and Box-Behnken design of experiments with casein (%), inoculum age (h) and inoculum level (ml) as process variables and xylanase, β-xylosidase, acetyl esterases and arabinofuranosidase as response variables...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28328035/%C3%AE-elimination-coupled-with-strong-cation-exchange-chromatography-for-phosphopeptide-analysis
#3
Hansuk Buncherd, Winfried Roseboom, Daranee Chokchaichamnankit, Phannee Sawangareetrakul, Amornrat Phongdara, Chantragan Srisomsap, Luitzen de Jong, Jisnuson Svasti
RATIONALE: Since the last decade, mass spectrometry (MS) has become an essential technique for phosphoprotein analysis. Formidable analytical challenges of MS for phosphoprotein study are both the low abundance of phosphopeptides and the lack of an unambiguous diagnostic fragment ion for identification of phospho residues. These challenges can be met by a charge-based isolation of β-elimination products after tryptic digestion using diagonal strong cation-exchange chromatography. METHODS: β-Elimination combined with diagonal strong cation-exchange chromatography (BE/2SCX) was used for the enrichment of phosphorylated peptides prior to a mass spectrometric analysis by liquid chromatography/ion trap tandem mass spectrometry (MS/MS)...
July 30, 2016: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28327777/predicting-and-assessing-rupture-in-protein-gels-under-oscillatory-shear
#4
Brice Saint-Michel, Thomas Gibaud, Sébastien Manneville
Soft materials may break irreversibly upon applying sufficiently large shear oscillations, a process whose physical mechanism remains largely elusive. In this work, the rupture of protein gels made of sodium caseinate under an oscillatory stress is shown to occur in an abrupt, brittle-like manner. Upon increasing the stress amplitude, the build-up of harmonic modes in the strain response can be rescaled for all gel concentrations. This rescaling yields an empirical criterion to predict the rupture point way before the samples are significantly damaged...
March 22, 2017: Soft Matter
https://www.readbyqxmd.com/read/28324208/the-%C3%AE-subunit-of-%C3%AE-conglycinin-and-various-glycinin-subunits-of-soy-are-not-required-to-modulate-hepatic-lipid-metabolism-in-rats
#5
Cynthia Chatterjee, Jiajie Liu, Carla Wood, Christine Gagnon, Elroy R Cober, Judith A Frégeau-Reid, Stephen Gleddie, Chao-Wu Xiao
PURPOSE: This study examined the effect of soy proteins with depletion of different subunits of the two major storage proteins, β-conglycinin and glycinin, on hepatic lipids and proteins involved in lipid metabolism in rats, since the bioactive component of soy responsible for lipid-lowering is unclear. METHODS: Weanling Sprague Dawley rats were fed diets containing either 20% casein protein in the absence (casein) or presence (casein + ISF) of isoflavones or 20% alcohol-washed soy protein isolate (SPI) or 20% soy protein concentrates derived from a conventional (Haro) or 2 soybean lines lacking the α' subunit of β-conglycinin and the A1-3 (1TF) or A1-5 (1a) subunits of glycinin...
March 21, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28320958/p97-vcp-promotes-degradation-of-crbn-substrate-glutamine-synthetase-and-neosubstrates
#6
Thang Van Nguyen, Jing Li, Chin-Chun Jean Lu, Jennifer L Mamrosh, Gang Lu, Brian E Cathers, Raymond J Deshaies
Glutamine synthetase (GS) plays an essential role in metabolism by catalyzing the synthesis of glutamine from glutamate and ammonia. Our recent study showed that CRBN, a direct protein target for the teratogenic and antitumor activities of immunomodulatory drugs such as thalidomide, lenalidomide, and pomalidomide, recognizes an acetyl degron of GS, resulting in ubiquitylation and degradation of GS in response to glutamine. Here, we report that valosin-containing protein (VCP)/p97 promotes the degradation of ubiquitylated GS, resulting in its accumulation in cells with compromised p97 function...
March 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28318108/neonatal-mono-colonization-of-germ-free-mice-with-lactobacillus-casei-enhances-casein-immunogenicity-after-oral-sensitization-to-cow-s-milk
#7
Matieny Aicha Maiga, Stéphanie Morin, Hervé Bernard, Sylvie Rabot, Karine Adel -Patient, Stéphane Hazebrouck
SCOPE: Food allergy is an increasing global health problem and perinatal administration of probiotic bacteria is currently under investigation in order to prevent the development of allergic diseases. Here, we investigated the impact of neonatal mono-colonization of mice with Lactobacillus casei BL23 on an oral sensitization to cow's milk. METHODS AND RESULTS: Mono-colonized (LC) mice were obtained by inoculating L. casei to germ-free (GF) parents. Nine-week-old GF, LC and conventional (CV) mice were orally sensitized to cow's milk with cholera toxin as adjuvant...
March 20, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28316470/experimental-and-modelling-study-of-the-denaturation-of-milk-protein-by-heat-treatment
#8
Fang Qian, Jiayue Sun, Di Cao, Yanfeng Tuo, Shujuan Jiang, Guangqing Mu
Heat treatment of milk aims to inhibit the growth of microbes, extend the shelf-life of products and improve the quality of the products. Heat treatment also leads to denaturation of whey protein and the formation of whey protein-casein polymer, which has negative effects on milk product. Hence the milk heat treatment conditions should be controlled in milk processing. In this study, the denaturation degree of whey protein and the combination degree of whey protein and casein when undergoing heat treatment were also determined by using the Native-PAGE and SDS-PAGE analysis...
2017: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/28315219/assessment-of-ige-reactivity-of-%C3%AE-casein-by-western-blotting-after-digestion-with-simulated-gastric-fluid
#9
Sara Benedé, Rosina López-Fandiño, Elena Molina
Cow's milk allergy is defined as an immunologically mediated adverse reaction to cow's milk proteins and it is usually, along with hen's egg allergy, the first food allergy identified in childhood.One of the main aspects to consider when evaluating the allergenic potential of food proteins is the effect of gastric digestion. It is known that allergens are usually able to survive the harsh acidic environment of the stomach, tolerate the presence of surfactants, and resist digestion by pepsin. They might also be digested into high molecular weight peptide fragments, which retain the same, or sometimes increased, IgE-binding...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28304022/altering-the-level-of-calcium-changes-the-physical-properties-and-digestibility-of-casein-based-emulsion-gels
#10
Irene McIntyre, Michael O Sullivan, Dolores O Riordan
Casein-based emulsion gels prepared with different types of lipid (i.e. milk fat or rapeseed oil) were formulated with high (774 mg Ca per 100 g) or low (357 mg Ca per 100 g) calcium levels by blending acid and rennet casein. Their physicochemical characteristics (i.e. composition, texture, microstructure & water mobility) and in vitro digestibility were compared to conventionally formulated high-calcium (723 mg Ca per 100 g) emulsion gels made from rennet casein with calcium chelating salts (CCS). CCS-free, high-calcium emulsion gels were significantly (p ≤ 0...
March 17, 2017: Food & Function
https://www.readbyqxmd.com/read/28298697/influence-of-using-a-blend-of-rennet-casein-and-whey-protein-concentrate-as-protein-source-on-the-quality-of-mozzarella-cheese-analogue
#11
Padhiyar Dhanraj, Atanu Jana, Hiral Modha, K D Aparnathi
The effect of incorporating whey protein concentrate (WPC) on the quality characteristics of Mozzarella cheese analogue (MCA) based on rennet casein (RC) was studied. The proportion of RC:WPC tried out were 95:5, 90:10, and 85:15 w/w. The formulation of MCA comprised of 23.5% of blend of RC and WPC, 15% specialty vegetable fat, 2.75% trisodium citrate + disodium hydrogen orthophosphate (2.5:1, w/w), 0.07% calcium chloride, 0.6% citric acid, 1.1% NaCl, 1.5% cheese bud flavoring, and rest water. Varying the proportion of RC and WPC had a significant influence on the composition, textural properties, baking qualities and sensory quality of MCA judged as a topping on pizza pie...
March 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28295325/effects-of-size-and-stability-of-native-fat-globules-on-the-formation-of-milk-gel-induced-by-rennet
#12
Jie Luo, Yuhan Wang, Huiyuan Guo, Fazheng Ren
Rennet-induced gelation crucially impacts cheese structure. In this study, effects of the size and stability of native fat globules on the kinetics of rennet-induced coagulation were revealed by determining the caseinomacropeptide release rate and rheological properties of milk. Moreover, the mobility and stability of fat globules during renneting was revealed using diffusing wave spectroscopy and confocal laser scanning microscopy. By use of a 2-stage gravity separation combined centrifugation scheme, native fat globules were selectively separated into small (SFG, D4,3 = 1...
March 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28290297/continuous-production-of-core-shell-protein-nanoparticles-by-antisolvent-precipitation-using-dual-channel-microfluidization-caseinate-coated-zein-nanoparticles
#13
Sandra Ebert, Charmaine K W Koo, Jochen Weiss, David Julian McClements
Antisolvent precipitation is commonly used to fabricate protein nanoparticles using a simple batch method that involves injecting a protein-solvent mixture into an antisolvent. In this study, the potential of producing core-shell protein nanoparticles by antisolvent precipitation using a continuous dual-channel microfluidization method was investigated. The solvent phase (zein in ethanol) and antisolvent phase (casein in water) were made to impinge on each other at high velocity, which generates intense shear, turbulent, and cavitation forces that ensure thorough mixing and breakup of the phases...
February 2017: Food Research International
https://www.readbyqxmd.com/read/28287713/protein-adsorption-tailors-the-surface-energies-and-compatibility-between-polylactide-and-cellulose-nanofibrils
#14
Alexey Khakalo, Ilari Filpponen, Orlando J Rojas
The state of dispersion and the interactions between a polymer and a filler in a nanocomposite crucially define its properties and performance. The affinity of polylactide (PLA) with vegetable and animal proteins (casein, gelatin, soy protein isolate, and hydrolysate) is investigated and their role as eco-friendly dispersants and compatibilizers of cellulose nanofibrils (CNF) is elucidated. The affinity of the proteins with PLA is determined by using sensograms acquired by electroacoustic (quartz crystal microgravimetry) and optical (surface plasmon resonance) techniques...
March 22, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28287654/use-of-imaging-techniques-to-identify-efficient-controlled-release-systems-of-lactobacillus-rhamnosus-gg-during-in-vitro-digestion
#15
Justine Guerin, Jennifer Burgain, Frédéric Borges, Bhesh Bhandari, Stéphane Desobry, Joël Scher, Claire Gaiani
Matrix composition plays a crucial role in the controlled release of viable and functional bacteria in the intestine. Imaging tools such as electronic and confocal microscopies were used in this work to investigate the influence of matrix composition on matrix integrity and porosity, bacterial spatial distribution and viability during simulated in vitro digestion. L. rhamnosus GG was encapsulated in matrices having different casein/whey protein ratios. The formulation with a casein/whey ratio of 60/40 presented a porous weak gel structure that resulted in its fast disintegration in gastric media showing the presence of dead bacteria in the intestine...
March 13, 2017: Food & Function
https://www.readbyqxmd.com/read/28286065/polydatin-promotes-nrf2-are-anti-oxidative-pathway-through-activating-ckip-1-to-resist-hg-induced-up-regulation-of-fn-and-icam-1-in-gmcs-and-diabetic-mice-kidneys
#16
Wenyan Gong, Jie Li, Zhiquan Chen, Junying Huang, Qiuhong Chen, Weibin Cai, Peiqing Liu, Heqing Huang
Our previous study indicated that Casein kinase 2 interacting protein-1 (CKIP-1) could promote the activation of the nuclear factor E2-related factor 2 (Nrf2)/ antioxidant response element (ARE) pathway, playing a significant role in inhibiting the fibrosis of diabetic nephropathy (DN). Polydatin (PD) has been shown to possess strong resistance effects on renal fibrosis which is closely related to activating the Nrf2/ARE pathway, too. Whereas, whether PD could resist DN through regulating CKIP-1 and consequently promoting the activation of Nrf2-ARE pathway needs further investigation...
March 9, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28283928/estimating-the-efficiency-of-phosphopeptide-identification-by-tandem-mass-spectrometry
#17
Chuan-Chih Hsu, Liang Xue, Justine V Arrington, Pengcheng Wang, Juan Sebastian Paez Paez, Yuan Zhou, Jian-Kang Zhu, W Andy Tao
Mass spectrometry has played a significant role in the identification of unknown phosphoproteins and sites of phosphorylation in biological samples. Analyses of protein phosphorylation, particularly large scale phosphoproteomic experiments, have recently been enhanced by efficient enrichment, fast and accurate instrumentation, and better software, but challenges remain because of the low stoichiometry of phosphorylation and poor phosphopeptide ionization efficiency and fragmentation due to neutral loss. Phosphoproteomics has become an important dimension in systems biology studies, and it is essential to have efficient analytical tools to cover a broad range of signaling events...
March 10, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28280413/effect-of-oleanolic-acid-on-the-activity-secretion-and-gene-expression-of-matrix-metalloproteinase-3-in-articular-chondrocytes-in-vitro-and-the-production-of-matrix-metalloproteinase-3-in-vivo
#18
Dong-Geun Kang, Hyun Jae Lee, Kun Tae Kim, Sun-Chul Hwang, Choong Jae Lee, Jin Sung Park
In the present study, we tried to examine whether oleanolic acid regulates the activity, secretion and gene expression of matrix metalloproteinase-3 (MMP-3) in primary cultured rabbit articular chondrocytes, as well as the production of MMP-3 in the knee joint of rat to evaluate the potential chondroprotective effect of oleanolic acid. Rabbit articular chondrocytes were cultured in a monolayer, and reverse transcription-polymerase chain reaction (RT-PCR) was used to measure interleukin-1β (IL-1β)-induced gene expression of MMP-3, MMP-1, MMP-13, a disintegrin and metalloproteinase with thrombospondin motifs-4 (ADAMTS-4), ADAMTS-5 and type II collagen...
March 2017: Korean Journal of Physiology & Pharmacology
https://www.readbyqxmd.com/read/28279934/ti-iv-carrying-polydopamine-coated-monodisperse-porous-sio2-microspheres-with-stable-magnetic-properties-for-highly-selective-enrichment-of-phosphopeptides
#19
Kouroush Salimi, Duygu Deniz Usta, Ömür Çelikbıçak, Asli Pinar, Bekir Salih, Ali Tuncel
A marked decrease in the saturation magnetization by the formation of functional shells around the magnetic core is an important disadvantage of magnetic core-shell nanoparticles. Another drawback of Ti(IV)-functionalized immobilized metal affinity chromatography (IMAC) sorbents is the acidic character of the binding medium used for Ti(4+) attachment onto composite magnetic nanoparticles, which causes an additional decrease in the saturation magnetization owing to the chemical interaction between the acidic moiety and the magnetic core...
February 22, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28278110/optimization-of-penicillium-aurantiogriseum-protease-immobilization-on-magnetic-nanoparticles-for-antioxidant-peptides-obtainment
#20
José Manoel Wanderley Duarte Neto, Jackeline da Costa Maciel, Júlia Furtado Campos, Luiz Bezerra de Carvalho Junior, Daniela Araújo Viana Marques, Carolina de Albuquerque Lima, Ana Lúcia Figueiredo Porto
This work reports an optimization of protease from Penicillium aurantiogriseum immobilization on polyaniline coated magnetic nanoparticles for antioxidant peptides obtainment derived from bovine casein. Immobilization process was optimized using a full two-level factorial design (2(4)) followed by a response surface methodology (RSM). Using the derivative, casein was hydrolyzed uncovering its peptides that were sequenced and had antioxidant properties tested via ABTS radical scavenging and Hydrogen peroxide scavenging assays...
February 10, 2017: Preparative Biochemistry & Biotechnology
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