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https://www.readbyqxmd.com/read/28318490/emulsion-based-synthesis-of-porous-silica
#1
REVIEW
Hanna Gustafsson, Krister Holmberg
We review the use of various types of emulsions as media for synthesis of porous silica particles. The use of high internal phase emulsions, i.e. emulsions with a high ratio of dispersed to continuous phase, is an approach that has attracted considerable attention. Polymerization of the continuous phase followed by removal of the dispersed phase leads to a material with an even distribution of pores if the emulsion droplets are uniform in size. Another route is to use particle stabilized emulsions as template...
March 11, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28317770/characterization-enhancement-and-modelling-of-mannosylerythritol-lipid-production-by-fungal-endophyte-ceriporia-lacerate-chzju
#2
Yongwu Niu, Linlin Fan, Di Gu, Jianan Wu, Qihe Chen
The glycolipid biosurfactants mannosylerythritol lipids (MELs) attract great attention for their biodegradability, super emulsifying properties and versatile bioactivities. In this study, the MEL deriving from Ceriporia lacerate CHZJU was identified as MEL-A, and its critical micelle concentration and emulsifying activities were assessed. To examine the production of MELs from Ceriporia lacerate, a Plackett-Burman design and response surface methodology were used to optimize the culture nutrients. The optimal medium contains 1g/L yeast extract, 1...
August 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28317761/functionalities-of-chitosan-conjugated-with-stearic-acid-and-gallic-acid-and-application-of-the-modified-chitosan-in-stabilizing-labile-aroma-compounds-in-an-oil-in-water-emulsion
#3
Tsung-Shi Yang, Tai-Ti Liu, I-Hwa Lin
The aims of this research were to conjugate chitosan (CT) with stearic acid (SA) and gallic acid (GA), and apply the modified chitosan to stabilize labile aroma compounds such as allyl isothiocyanate (AITC) and limonene in oil-in-water emulsions. Generally, the antioxidant activity of CT-SA-GA increased as the GA content in the conjugate increased. In most assays, GA had a lower IC50 value than that of CT-SA-GA; however, CT-SA-GA exhibited better performance than GA in the Fe(2+)-chelating activity. In accelerated tests (heating or illumination) for evaluating the chemical stability of AITC and limonene during storage, CT-SA and CT-SA-GA were used to prepare AITC and limonene O/W emulsions, respectively...
August 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28317729/chemical-components-and-emulsification-properties-of-mucilage-from-dioscorea-opposita-thunb
#4
Fanyi Ma, Yun Zhang, Yanna Yao, Yurong Wen, Weiping Hu, Jie Zhang, Xiuhua Liu, Alan E Bell, Carina Tikkanen-Kaukanen
The properties of mucilage obtained from Dioscorea opposita, generated during industrial manufacturing were investigated in this study. Characteristics such as monosaccharide content, amino acid content, molecular weight, and structural features were measured, whereas morphology was observed using a scanning/transmission electron microscope. Additionally, emulsification properties at different concentrations (0.2%, 0.4%, 0.6%, 0.8%, and 1.0%) and under acidic and basic pH (5.0 and 9.0) conditions were studied...
August 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28315676/the-major-histocompatibility-complex-class-iii-haplotype-ltab-ncr3-regulates-adjuvant-induced-but-not-antigen-induced-autoimmunity
#5
Anthony C Y Yau, Jonatan Tuncel, Rikard Holmdahl
Rheumatoid arthritis is a complex disease associated with >100 risk loci, with the strongest association from the major histocompatibility complex (MHC) region. Here, we analyzed a new genetic association in the MHC class-III region (MHC-III) using adjuvant- and antigen-induced arthritis models. In addition, we used models for multiple sclerosis for comparison and dissected the MHC-III-mediated mechanisms of importance for antibody and T-cell responses to antigens. With the use of a panel of MHC-III recombinant inbred strains, we found that the 33-kb Ltab-Ncr3 haplotype in MHC-III was linked to the induction of arthritis with incomplete Freund's adjuvant, with similar effects in arthritis induced by several oil adjuvants (hexadecane, heptadecane, squalene, arlacel)...
March 15, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28306209/crab-chitin-based-2d-soft-nanomaterials-for-fully-biobased-electric-devices
#6
Jun You, Mingjie Li, Beibei Ding, Xiaochen Wu, Chaoxu Li
2D nanomaterials have various size/morphology-dependent properties applicable in electronics, optics, sensing, and actuating. However, intensively studied inorganic 2D nanomaterials are frequently hindered to apply in some particular and industrial fields, owing to harsh synthesis, high-cost, cytotoxicity, and nondegradability. Endeavor has been made to search for biobased 2D nanomaterials with biocompatibility, sustainability, and biodegradability. A method of hydrophobization-induced interfacial-assembly is reported to produce an unprecedented type of nanosheets from marine chitin...
March 17, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28304094/effects-of-blood-plasma-proteins-addition-on-physico-chemical-properties-of-emulsion-type-pork-sausage-during-cold-storage
#7
Sung Ho Kim, Sang Keun Jin, Jung Seok Choi
BACKGROUND: Most of the slaughter blood is discarded, resulting in problems related to costs for wastewater disposal and environmental pollution. However, animal blood contains various proteins such as albumin, globulin and globin and can be used as a natural emulsifier, stabilizer and color additives. Thus, this study was carried out to investigate the effect of blood plasma proteins on the physico-chemical properties of emulsion-type pork sausages stored at 4 °C over 5 weeks. RESULTS: The emulsion-type pork sausages with plasma powders had higher pH than the other treatments during weeks 5, and higher shear force than the control (p < 0...
March 17, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28303045/dielectric-properties-optimum-formulation-and-microwave-baking-conditions-of-chickpea-cakes
#8
Yaşar Özlem Alifakı, Özge Şakıyan
The aim of this study was to correlate dielectric properties with quality parameters, and to optimize cake formulation and baking conditions by response surface methodology. Weight loss, color, specific volume, hardness and porosity were evaluated. The samples with different DATEM (0.4, 0.8 and 1.2%) and chickpea flour concentrations (30, 40 and 50%) were baked in microwave oven at different power (300, 350, 400 W) and baking times (2.50, 3.0, 3.50 min). It was found that microwave power showed significant effect on color, while baking time showed effect on weight loss, porosity, hardness, specific volume and dielectric properties...
March 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28301597/boiling-histotripsy-lesion-characterization-on-a-clinical-magnetic-resonance-imaging-guided-high-intensity-focused-ultrasound-system
#9
Avinash Eranki, Navid Farr, Ari Partanen, Karun V Sharma, Hong Chen, Christopher T Rossi, Satya V V N Kothapalli, Matthew Oetgen, AeRang Kim, Ayele H Negussie, David Woods, Bradford J Wood, Peter C W Kim, Pavel S Yarmolenko
PURPOSE: High intensity focused ultrasound (HIFU) is a non-invasive therapeutic technique that can thermally ablate tumors. Boiling histotripsy (BH) is a HIFU approach that can emulsify tissue in a few milliseconds. Lesion volume and temperature effects for different BH sonication parameters are currently not well characterized. In this work, lesion volume, temperature distribution, and area of lethal thermal dose were characterized for varying BH sonication parameters in tissue-mimicking phantoms (TMP) and demonstrated in ex vivo tissues...
2017: PloS One
https://www.readbyqxmd.com/read/28300586/pectins-functionalized-biomaterials-a-new-viable-approach-for-biomedical-applications-a-review
#10
Aqdas Noreen, Zill-I-Huma Nazli, Javeria Akram, Ijaz Rasul, Asim Mansha, Nazia Yaqoob, Rehana Iqbal, Shazia Tabasum, Mohammad Zuber, Khalid Mahmood Zia
Pectins are natural complex heteropolysaccharides, composed of (1, 4)-linked α-D-galacturonic acid residues and variety of neutral sugars such as rhamnose, galactose, arabinose. It is second most abundant component of the cell wall of all land plants. It has wide applications in various fields due to its use as gelling, emulsifying or stabilizing agent and as well as its non-toxic, biocompatible and biodegradable nature. Considering these versatile properties this review sheds a light on the synthesis, modification, characterization and applications of pectin based polymers...
March 11, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28300407/dynamic-succession-of-groundwater-sulfate-reducing-communities-during-prolonged-reduction-of-uranium-in-a-contaminated-aquifer
#11
Ping Zhang, Zhili He, Joy D Van Nostrand, Yujia Qin, Ye Deng, Liyou Wu, Qichao Tu, Jianjun Wang, Christopher W Schadt, Matthew W Fields, Terry C Hazen, Adam P Arkin, David A Stahl, Jizhong Zhou
To further understand the diversity and dynamics of SRB in response to substrate amendment, we sequenced genes coding for the dissimilatory sulfite reductase (dsrA) in groundwater samples collected after an emulsified vegetable oil (EVO) amendment, which sustained U(VI)-reducing conditions for one year in a fast-flowing aquifer. EVO amendment significantly altered the composition of groundwater SRB communities. Sequences having no closely related-described species dominated (80%) the indigenous SRB communities in nonamended wells...
March 16, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28300199/effect-of-hydro-oleophobic-perfluorocarbon-chain-on-interfacial-behavior-and-mechanism-of-perfluorooctane-sulfonate-in-oil-water-mixture
#12
Pingping Meng, Shubo Deng, Ziwen Du, Bin Wang, Jun Huang, Yujue Wang, Gang Yu, Baoshan Xing
Perfluorocarbon chain of perfluorooctane sulfonate (PFOS) is not only hydrophobic but also oleophobic, and its effect on PFOS distribution in oil-water mixture and underlying mechanism are unclear. For the first time, we propose that PFOS can emulsify oil-water mixture only in the presence of air, completely different from hydrocarbon surfactants. The perfluorocarbon chain repels hydrophobic compounds and its oleophobicity increases with decreasing polarity of organic solvents. The formed emulsion in oil phase contains high concentrations of PFOS, resulting in PFOS decrease in water...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28299403/effects-of-ifn-%C3%AE-1a-and-ifn-%C3%AE-1b-treatment-on-the-expression-of-cytokines-inducible-nos-nos-type-ii-and-myelin-proteins-in-animal-model-of-multiple-sclerosis
#13
Natalia Lubina-Dąbrowska, Adam Stepień, Grzegorz Sulkowski, Beata Dąbrowska-Bouta, Józef Langfort, Małgorzata Chalimoniuk
The aim of this study was to investigate the effects of interferon (IFN)-β1a and IFN-β1b treatment on inflammatory factors and myelin protein levels in the brain cortex of the Lewis rat experimental autoimmune encephalomyelitis (EAE), animal model of multiple sclerosis. To induce EAE, rat were immunized with inoculums containing spinal cord guinea pig homogenized in phosphate-buffered saline and emulsified in Freund's complete adjuvant containing 110 µg of the appropriate antigen in 100 µl of an emulsion and additionally 4-mg/ml Mycobacterium tuberculosis (H37Ra)...
March 15, 2017: Archivum Immunologiae et Therapiae Experimentalis
https://www.readbyqxmd.com/read/28298680/effects-of-degree-of-hydrolysis-dh-on-the-functional-properties-of-egg-yolk-hydrolysate-with-alcalase
#14
Zhi-Jie Bao, Ying Zhao, Xiao-Ying Wang, Yu-Jie Chi
Effects of enzymatic hydrolysis on the physicochemical and functional properties of egg yolk were investigated in this study. Alcalase, neutrase and flavourzyme were used to hydrolyze egg yolk. Solubility, foaming properties, emulsifying and microstructure properties of egg yolk were determined after enzymatic hydrolysis. Results showed that alcalase had better efficiency of hydrolysis than neutrase and flavourzyme. Enzymatic hydrolysis caused a marked changes in protein solubility, surface hydrophobicity, molecular weight distributions, microstructure and other functional properties...
March 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28294638/potential-targetability-of-multi-walled-carbon-nanotube-loaded-with-silver-nanoparticles-photosynthesized-from-ocimum-tenuiflorum-tulsi-extract-in-fertility-diagnosis
#15
Pradeep K Jha, Rakhi K Jha, Dilip Rout, Sathishkumar Gnanasekar, Suresh Vs Rana, Maidul Hossain
Nanocarrier mediated targeted delivery and biosensing in reproductive health care is a major exploratory domain. This work demonstrates the loading of silver nanoparticle (AgNP) inside the multiwalled Carbon nanotube(MWCNT) and their targetability to the intracellular part of the sperm cell for its further application in biosensing based infertility diagnosis. Ocimum tenuiflorum (tulsi extract) mediated photosynthesized AgNP exhibited spherical shape, 5-40nm size and surface plasmonic resonance at 430 nm...
March 15, 2017: Journal of Drug Targeting
https://www.readbyqxmd.com/read/28294260/stable-arrested-non-aqueous-edible-foams-based-on-food-emulsifiers
#16
A R Patel
Stable oil foams with structured air-oil interfaces and high overrun (φair ≫ 0.5) were fabricated using edible emulsifiers (sucrose esters and lecithin). Advanced microscopy was used to understand the microstructure of these 'arrested' non-aqueous foams which displayed interesting rheological behaviour (yielding and thixotropy). Such complex colloids stabilized by edible ingredients could find important industrial applications in the development of novel textured food products.
March 15, 2017: Food & Function
https://www.readbyqxmd.com/read/28290652/protein-nanocage-as-a-ph-switchable-pickering-emulsifier
#17
Mridul Sarker, Nikodem Tomczak, Sierin Lim
Encapsulation of active compounds in Pickering emulsions using bioderived protein-based stabilizers holds potential for the development of novel formulations in the fields of foods and cosmetics. We employ a dodecahedron hollow protein nanocage as a pH-switchable Pickering emulsifier. E2 protein nanocages are derived from pyruvate dehydrogenase multienzyme complex from Geobacillus stearothermophilus which adsorb at the oil/water interface at neutral and basic pH's and stabilize the Pickering emulsions, while in the acidic range, at pH ∼4, the emulsion separates into emulsion and serum phases due to flocculation...
March 14, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28290326/emulsions-stabilized-by-high-acyl-gellan-and-kcl
#18
Joice Aline Pires Vilela, Rosiane Lopes da Cunha
Emulsions containing high acyl gellan (0.025 or 0.100% w/w) as emulsifier/stabilizer with KCl addition (1.6-15,633mg of KCl/g of gellan) were evaluated. In general a decrease in apparent viscosity and an increase of the droplets size were observed as KCl content rises. Addition of intermediate KCl concentration (62.6-1,563mg of KCl/g of gellan) could improve the stability to macroscopic phase separation of emulsions with the lower gellan concentration (0.025% w/w). However it was observed that KCl content above a critical value (1,563mg of KCl/g of gellan) caused the breakup of the emulsions containing 0...
January 2017: Food Research International
https://www.readbyqxmd.com/read/28290324/lipid-droplets-coated-with-milk-fat-globule-membrane-fragments-microstructure-and-functional-properties-as-a-function-of-ph
#19
Christelle Lopez, Chantal Cauty, Florence Rousseau, Marielle Blot, Antinéa Margolis, Marie-Hélène Famelart
Processed lipid droplets coated by milk fat globule membrane (MFGM) material are of primary interest to mimic the specific functions provided by the fat globules in milk and dairy products. The objectives were to investigate, as a function of pH, the properties and microstructure of MFGM-coated lipid droplets prepared with an ingredient rich in MFGM containing polar lipids and proteins. The samples were prepared in water and in milk ultrafiltrate. The combination of microscopy techniques, zeta potential and particle size measurements, and rheological determinations was used...
January 2017: Food Research International
https://www.readbyqxmd.com/read/28287014/preparation-and-optimization-of-tablets-containing-a-self-nano-emulsifying-drug-delivery-system-loaded-with-rosuvastatin
#20
Heba F Salem, Rasha M Kharshoum, Abdel Khalek A Halawa, Demiana M Naguib
BACKGROUND: Rosuvastatin (ROS) calcium is the latest synthetic drug in the statin group that has an anti-hyperlipidemic activity. It is available as tablets, and its poor aqueous solubility, slow dissolution rate and low-absorption extent result in less than 20% bioavailability and about 80% being excreted unchanged in the feces without absorption. OBJECTIVE: To utilize nanotechnology to reformulate ROS as a self-nano-emulsifying drug delivery system (SNEDDS), and utilizing design optimization to fabricate the SNEDDS as a tablet...
March 13, 2017: Journal of Liposome Research
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