نتایج جستجو برای: lyophilisation

تعداد نتایج: 89  

Journal: :Thorax 2005
K Wells J Vaughan T N Pajewski S Hom L Ngamtrakulpanit A Smith A Nguyen R Turner J Hunt

BACKGROUND Measurement of pH in exhaled breath condensate (EBC) is robust and simple. Acidic source fluid (airway lining fluid) traps bases while volatilising acids, leading to EBC acidification in many lung diseases. Lower airway ammonia is one determinant of airway lining fluid pH, raising the concern that addition of the base ammonia by contamination from the mouth might confound EBC pH assa...

2015
Periela da Silva Sousa-Vasconcelos Wellington da Silva Seguins Eduardo de Souza Luz Rosa Teixeira de Pinho

Tuberculosis has great public health impact with high rates of mortality and the only prophylactic measure for it is the Mycobacterium bovis bacillus Calmette-Guérin (BCG) vaccine. The present study evaluated the release of cytokines [interleukin (IL)-1, tumour necrosis factor and IL-6] and chemokines [macrophage inflammatory protein (MIP)-1α and MIP-1β] by THP-1 derived macrophages infected wi...

Journal: :Carbohydrate Polymers 2021

Porous starch materials with various morphology and properties were made via dissolution, retrogradation drying either supercritical CO2 (“aerogels”) or lyophilisation (“cryogels”). Their correlated the rheological response of retrograded gels crystallinity aerogels cryogels. All cryogels possess very low density (0.07 – 0.16 g/cm3), large macropores specific surface area (around 3–13 m2/g). is...

Journal: :International journal of pharmaceutics 2007
S Daoud-Mahammed P Couvreur R Gref

The stability of new supramolecular nanoassemblies (nanogels), based on the association of a hydrophobically modified dextran (MD) and a beta-cyclodextrin polymer (pbetaCD), has been studied by two complementary methods: (i) size measurements and (ii) turbidity experiments using a Turbiscan optical analyser. Nanogels of about 120-150nm were obtained whatever the concentration of the two polymer...

Journal: :Food technology and biotechnology 2014
Jadranka Frece Jelena Cvrtila Ivana Topić Frane Delaš Ksenija Markov

The aim of this study is to identify and characterise potential autochthonous functional starter cultures in homemade horsemeat sausage. The dominant microflora in the samples of horsemeat sausage were lactic acid bacteria (LAB), followed by micrococci. Among the LAB, Lactococcus lactis ssp. lactis and Lactobacillus plantarum were the dominant species, and since the first is not common in ferme...

Journal: :Revue d’élevage et de médecine vétérinaire des pays tropicaux 1977

2012
L. Medvecky

Polyhydroxybutyrate-chitosan-hydroxyapatite (PHB-CHT-HAP) composite scaffolds were prepared by the precipitation of biopolymer-nanohydroxyapatite suspensions and following lyophilisation. The propylene carbonate and acetic acid were used as the polyhydroxybutyrate and chitosan solvents, respectively. The high porous microstructure was observed in composites and the macroporosity of scaffolds (p...

2011
Ritesh M. Pabari Benedict Ryan Catherine McCarthy Zebunnissa Ramtoola

The aim of the present study was to investigate the influence of process shear stressors on the stability of a model monoclonal antibody, trastuzumab. Trastuzumab, at concentrations of 0.4-4.0 mg/mL, was subjected to sonication, freeze-thaw, lyophilisation, spray drying and was encapsulated into micro- and nanoparticles. The stressed samples were analysed for structural integrity by gel electro...

Journal: :Analytical and bioanalytical chemistry 2009
Xijuan Chen Kai Bester

In this study, a method for the determination of organic micro-pollutants, i.e. personal care products such as synthetic musk fragrances, household bactericides, organophosphate flame retardants and plasticizers, as well as phthalates in sludge, has been developed. This method is based on lyophilisation and accelerated solvent extraction followed by clean-up steps, i.e. solid phase extraction a...

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