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Microencapsulation

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https://www.readbyqxmd.com/read/28429231/a-method-for-microencapsulation-of-cells-and-a-device-for-its-realization
#1
S A Lepekhova, O A Goldberg, A A Kravchenko, A E Batraks, E V Koval, I S Kurgansky, K A Apartsin
The device for cell encapsulation makes it possible to fabricate microcapsules of a preset size with even smooth surface, without defects or adhesion to each other, with viable cells inside the capsule. The cells were derived from newborn piglet pancreases.
April 21, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28425308/the-effect-of-molecular-weights-of-microencapsulating-polymers-on-viability-of-mouse-cloned-pancreatic-%C3%AE-cells-biomaterials-osmotic-forces-and-potential-applications-in-diabetes-treatment
#2
Armin Mooranian, Ryu Tackechi, Emma Jamieson, Grant Morahan, Hani Al-Salami
INTRODUCTION: Ideal cell-containing microcapsules should be capable of maintaining cell viability and exhibit significant structural stability to support cellular functionality. To date, such microcapsules remain unavailable, thus, this study used our well-established microencapsulating methods to examine a total of 32 different microencapsulating formulations and correlate polymers' molecular weights (Mwt) and UDCA addition, with cell viability and microcapsules' stability, postmicroencapsulation...
April 20, 2017: Pharmaceutical Development and Technology
https://www.readbyqxmd.com/read/28417577/metal-hydride-nanoparticles-with-ultrahigh-structural-stability-and-hydrogen-storage-activity-derived-from-microencapsulated-nanoconfinement
#3
Jiguang Zhang, Yunfeng Zhu, Huaijun Lin, Yana Liu, Yao Zhang, Shenyang Li, Zhongliang Ma, Liquan Li
Metal hydrides (MHs) have recently been designed for hydrogen sensors, switchable mirrors, rechargeable batteries, and other energy-storage and conversion-related applications. The demands of MHs, particular fast hydrogen absorption/desorption kinetics, have brought their sizes to nanoscale. However, the nanostructured MHs generally suffer from surface passivation and low aggregation-resisting structural stability upon absorption/desorption. This study reports a novel strategy named microencapsulated nanoconfinement to realize local synthesis of nano-MHs, which possess ultrahigh structural stability and superior desorption kinetics...
April 18, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28415462/microencapsulation-of-eugenol-molecules-by-%C3%AE-cyclodextrine-as-a-thermal-protection-method-of-antibacterial-action
#4
R Piletti, A M Bugiereck, A T Pereira, E Gussati, J Dal Magro, J M M Mello, F Dalcanton, R Z Ternus, C Soares, H G Riella, M A Fiori
Eugenol is natural oil that has excellent antibacterial properties but cannot be used to fabricate many products that require thermal processing. One possible alternative to the use of the eugenol molecules in high-temperature processes is the encapsulation of these molecules in a structure that is not toxic and is resistant to thermal treatment. This work investigated the encapsulation process of eugenol molecules in β-cyclodextrine and the antibacterial properties of eugenol-β-cyclodextrine (the eugenol-βCD complex) against Escherichia coli and Staphylococcus aureus...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28407968/novel-nanoliposomal-encapsulated-omega-3-fatty-acids-and-their-applications-in-food
#5
Babak Rasti, Arezoo Erfanian, Jinap Selamat
The aim of the present research was to evaluate the application, stability and suitability of ω3 polyunsaturated fatty acids (PUFAs) incorporated nanoliposomes in food enrichment. Nanoliposomal ω3 PUFAs was prepared by Mozafari method, and their application in bread and milk was compared with unencapsulated (fish oil) and microencapsulated ω3 PUFAs. Sensory evaluation was conducted to determine the perceptible sensory difference/similarity between control, unencapsulated, microencapsulated, and nanoliposomal ω3 PUFAs enriched foods...
September 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28399993/oregano-essential-oil-based-natural-antimicrobial-packaging-film-to-inactivate-salmonella-enterica-and-yeasts-molds-in-the-atmosphere-surrounding-cherry-tomatoes
#6
Sang-Jo Kwon, Yoonjee Chang, Jaejoon Han
This study investigated the effectiveness of a polyvinyl alcohol (PVA) film containing the natural antimicrobial oregano essential oil (OEO) as an active packaging application for decreasing the microbial growth. The film exerted an antimicrobial effect via the atmosphere surrounding the food rather than direct contact, thereby preserving the quality of cherry tomatoes. A packaging film containing microencapsulated OEO was developed. The loading content increased gradually (104.29-234.29 μg OEO/mg film) with the amount of OEO incorporated (1%, 2%, and 3%), where the PVA films containing 2% OEO had the highest loading efficiency (91...
August 2017: Food Microbiology
https://www.readbyqxmd.com/read/28393603/improving-functional-properties-of-pea-protein-isolate-for-microencapsulation-of-flaxseed-oil
#7
Poonam R Bajaj, Kanishka Bhunia, Leslie Kleiner, Helen S Joyner Melito, Denise Smith, Girish Ganjyal, Shyam S Sablani
Unhydrolysed pea protein (UN) forms very viscous emulsions when used at higher concentrations. To overcome this, UN was hydrolysed using enzymes alcalase, flavourzyme, neutrase, alcalase-flavourzyme, and neutrase-flavourzyme at 50 °C for 0 min, 30 min, 60 min, and 120 min to form hydrolysed proteins A, F, N, AF, and NF, respectively. All hydrolysed proteins had lower apparent viscosity and higher solubility than UN. Foaming capacity of A was the highest, followed by NF, N, and AF. Hydrolysed proteins N60, A60, NF60, and AF60 were prepared by hydrolysing UN for 60 min and used further for microencapsulation...
April 24, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28392021/encapsulation-of-grape-seed-extract-in-polylactide-microcapsules-for-sustained-bioactivity-and-time-dependent-release-in-dental-material-applications
#8
Mostafa Yourdkhani, Ariene Arcas Leme-Kraus, Berdan Aydin, Ana Karina Bedran-Russo, Scott R White
OBJECTIVE: To sustain the bioactivity of proanthocyanidins-rich plant-derived extracts via encapsulation within biodegradable polymer microcapsules. METHODS: Polylactide microcapsules containing grape seed extract (GSE) were manufactured using a combination of double emulsion and solvent evaporation techniques. Microcapsule morphology, size distribution, and cross-section were examined via scanning electron microscopy. UV-vis measurements were carried out to evaluate the core loading and encapsulation efficiency of microcapsules...
April 6, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28391767/alginate-based-microcapsules-generated-with-the-coaxial-electrospray-method-for-clinical-application
#9
Catherine Barron, Jia-Qiang He
Alginate-based microencapsulation of cells has made a significant impact on the fields of regenerative medicine and tissue engineering mainly because of its ability to provide immunoisolation for the encapsulated material. This characteristic has allowed for the successful transplantation of non-autologous cells in several clinical trials for life threatening conditions, such as diabetes, myocardial infarction, and neurodegenerative disorders. Methods for alginate hydrogel microencapsulation have been well developed for various types of cells and can generate microcapsules of different diameters, degradation time, and composition...
April 20, 2017: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/28391410/influence-of-the-form-of-administration-of-chlorogenic-acids-on-oxidative-stress-induced-by-high-fat-diet-in-rats
#10
G Budryn, D Zaczyńska, D Żyżelewicz, J Grzelczyk, Z Zduńczyk, J Juśkiewicz
Green coffee is one of health-promoting supplements of the diet, applied in the form of either preparations or enriched food products. Its positive impact is manifested by mitigation of the development of certain tumors, e.g., in the colon and liver, and type 2 diabetes. Many studies proved that chlorogenic acids are the main active substances in green coffee. The bioavailability of these compounds depends among others on their interactions with other components of the diet, mainly proteins. When they are used as food ingredients, their bioavailability is additionally decreased because of the decomposition or interactions with other ingredients during food processing...
April 8, 2017: Plant Foods for Human Nutrition
https://www.readbyqxmd.com/read/28390936/evidence-of-campylobacter-jejuni-reduction-in-broilers-with-early-synbiotic-administration
#11
Loredana Baffoni, Francesca Gaggìa, Giuliano Garofolo, Gabriella Di Serafino, Enrico Buglione, Elisabetta Di Giannatale, Diana Di Gioia
C. jejuni is considered a food safety concern to both public health authorities and consumers since it is the leading bacterial cause of food-borne gastroenteritis in humans. A high incidence of C. jejuni in broiler flocks is often correlated to pathogen recovery in retail poultry meat, which is the main source of human infection. In this work broiler chickens were fed with a synbiotic product mixed with conventional feed using two different administration strategies. The synbiotic was formulated with the microencapsulated probiotic Bifidobacterium longum PCB133 and a xylo-oligosaccharide (XOS)...
April 3, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28389408/practically-feasible-production-of-sustained-release-microspheres-of-granulocyte-macrophage-colony-stimulating-factor-rhgm-csf
#12
Fei Wu, Lili Dai, Lee Geng, Hua Zhu, Tuo Jin
Using recombinant human granulocyte-macrophage colony-stimulating factor (rhGM-CSF) as a model drug, the present study demonstrated a practically feasible process to produce polymeric microspheres for sustained-release delivery of protein drugs with preserved integrity. This process is featured with pre-loading proteins into polysaccharide fine particles via a self-standing aqueous-aqueous "emulsion", prior to microencapsulation into the microspheres. The protein drug, rhGM-CSF, was partitioned thermodynamically into a dextran dispersed phase of the aqueous-aqueous emulsion, followed by lyophilization and removal of the polyethylene glycol (PEG) continuous phase (using an organic solvent not penetrating into dextran matrix)...
April 5, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28378596/bcg-loaded-chitosan-microparticles-interaction-with-macrophages-and-preliminary-in-vivo-studies
#13
Liliana Aranha Caetano, Lara Figueiredo, António J Almeida, L M D Gonçalves
The aim of this study was to develop a novel BCG-loaded chitosan vaccine with high association efficiency which can afford efficient interaction with APC and elicit local and Th1-type-specific immune response after intranasal administration. Chitosan-suspended BCG and BCG-loaded chitosan-alginate microparticles were prepared by ionotropic gelation. Interaction with APC was evaluated by fluorescence microscopy using rBCG-GFP. Specific immune responses were evaluated following intranasal immunisation of mice...
April 19, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28378196/eco-friendly-control-of-the-poultry-red-mite-dermanyssus-gallinae-dermanyssidae-using-the-%C3%AE-thujone-rich-essential-oil-of-artemisia-sieberi-asteraceae-toxic-and-repellent-potential
#14
Mohaddeseh Abouhosseini Tabari, Mohammad Reza Youssefi, Giovanni Benelli
The poultry red mite, Dermanyssus gallinae, represents a key threat for the poultry industry worldwide. The control of D. gallinae is mainly achieved by continuous applications of acaricides. However, the fast-growing development of resistance, and the strict laws concerning chemicals admitted for treatments on food animals, highlighted the importance of alternative control tools. Here, we explored the potential of Artemisia sieberi essential oil against D. gallinae. In this study, the A. sieberi essential oil was analyzed using GC and GC-MS...
April 5, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28373045/optimization-of-ziziphora-clinopodiodes-essential-oil-microencapsulation-by-whey-protein-isolate-and-pectin-a-comparative-study
#15
Mahmoud Hosseinnia, Mohammad Alizadeh Khaledabad, Hadi Almasi
The performance of whey protein isolate (WPI) and pectin as wall materials in encapsulation of Ziziphora clinopodiodes essential oil by ultrasonication method was compared. In this regard, using the response surface methodology, the influence of ultrasonication (US) power (50-150W) and core-coating ratio (10-100%) on the properties of microcapsules was evaluated. Increasing US power and core-coating ratio, caused to increase and decrease the particle size, respectively. The polydispersity index (PDI) of WPI coated microcapsules was increased by increasing of US power...
March 31, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28368121/microencapsulation-and-stimuli-responsive-controlled-release-of-particles-using-water-in-air-powders
#16
Krishna Panthi, Robin Singh, Kishore K Mohanty
In this work, we report a facile, one-step method to encapsulate hydrophilic particles (HP) (micro- or nanosize) using water-in-air powders. Hydrophobic silica nanoparticles were mixed with an aqueous phase containing HP in the presence of air under high shear, resulting in the self-assembly of silica nanoparticles on water droplets to make water-in-air powders with HP encapsulated in the aqueous phase within the silica shell. The encapsulated HP can be released on the basis of an external stimulus such as adding an external aqueous phase of a certain pH or a surfactant solution that alters the wettability of the encapsulating silica nanoparticles...
April 10, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28362165/physiological-protection-of-probiotic-microcapsules-by-coatings
#17
Philippe E Ramos, Miguel A Cerqueira, José A Teixeira, António A Vicente
Nowadays, food and nutrition have a greater impact in people's concerns, with the awareness that nutrition have a direct impact in health and wellbeing. Probiotics have an important role in this topic and consumers are starting to really understand their potential in health, leading to an increasing interest of the companies to their commercial use in foods. However, there are several limitations to the use of probiotics in foods and beverages, being one of them their efficiency (directly associated to their survival rate) upon ingestion...
March 31, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28362046/co-microencapsulation-of-bmscs-and-mouse-pancreatic-%C3%AE-cells-for-improving-the-efficacy-of-type-i-diabetes-therapy
#18
Ruimin Long, Yuangang Liu, Shibin Wang, Li Ye, Peng He
INTRODUCTION: To overcome the shortcomings of pancreas transplantation and insulin injection treatment for type I diabetes, biocompatible materials were used to prepare alginate-chitosan-alginate microcapsules that co-encapsulated bone marrow mesenchymal stem cells and mouse pancreatic β cells to treat diabetic mice. METHODS: Blank alginate-chitosan-alginate (ACA) microcapsules and co-microencapsulated cells were prepared using a high-voltage electrostatic method and then characterized using an inverted microscope...
March 21, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28355995/new-advances-in-infant-feeding-new-products-and-novel-technologies
#19
M C Pina-Pérez, A Martínez, D Rodrigo
BACKGROUND: Breastfeeding is the best way to provide ideal food for infants. However, there are many situations in which breastfeeding is unviable (maternal illness, hygiene problems, intravenous feeding requirement, storage). Safe, efficient, and nutritious products should be offered by the industry to mothers and healthcare professionals as an alternative. OBJECTIVE: The present review aims to update the state of the art regarding the most innovative developments in infant feeding formulation and, the promising novel technologies that are being investigated to achieve a balance between the microbiological stability, organoleptic and nutritional value of babyfood...
March 28, 2017: Recent Patents on Food, Nutrition & Agriculture
https://www.readbyqxmd.com/read/28352045/repellent-effect-of-microencapsulated-essential-oil-in-lotion-formulation-against-mosquito-bites
#20
Norashiqin Misni, Zurainee Mohamed Nor, Rohani Ahmad
BACKGROUND & OBJECTIVES: Many essential oils have been reported as natural sources of insect repellents; however, due to high volatility, they present low repellent effect. Formulation technique by using microencapsulation enables to control the volatility of essential oil and thereby extends the duration of repellency. In this study, the effectiveness of microencapsulated essential oils of Alpinia galanga, Citrus grandis and C. aurantifolia in the lotion formulations were evaluated against mosquito bites...
January 2017: Journal of Vector Borne Diseases
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