scholarly journals SYNTHESIS OF AMINE-CONTAINING POLYMERIC MICROSPHERES BY SEED COPOLYMERIZATION FOR APPLICATIONS IN BIOTECHNOLOGY

2017 ◽  
Vol 12 (4) ◽  
pp. 75-84 ◽  
Author(s):  
A. V. Bakhtina ◽  
A. A. Sivaev ◽  
S. M. Levachev ◽  
S. A. Gusev ◽  
N. A. Lobanova ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Glycidyl Methacrylate ◽  
Capillary Tube ◽  
Chemical Properties ◽  
High Sensitivity ◽  
Latex Agglutination ◽  
Buffer Solution ◽  
Polymeric Microspheres ◽  
Physico Chemical ◽  
Polymer Slurry

This paper presents the results of studies of seed copolymerization of glycidyl methacrylate with ethylene glycol poly(glycidyl methacrylate) on seed particles in order to obtain partially crosslinked polymer microspheres with a diameter of about 3.5 microns for use in immunochemical reactions, as carriers of bioligands. The physico-chemical properties of polymeric microspheres obtained under different conditions were studied by the following methods: the diameters of the particles - by electron scanning and light microscopy; the wetting angle - bу the method of "lying droplets"; the sedimentation velocity - by the macromethod in a capillary tube by the movement of the (polymer slurry)/water phase boundary (buffer solution); the zeta-potential - by dynamic light scattering. Having studied the physical-chemical properties of all polymer slurries we concluded that the optimal particles to create on the basis of their diagnostic test systems with high sensitivity working on the principle of latex agglutination reaction are poly(glycidyl methacrylate) particles with equal percentage of glycidyl methacrylate and ethylene glycol dimethacrylate aminated with hexamethylendiamine in the environment of n-propanol, because they have a sufficient number of amino groups and do not lose their sedimentation properties after all stages of the synthesis.

scholarly journals Separation of Biological Entities from Human Blood by Using Magnetic Nanocomposites Obtained from Zeolite Precursors

Molecules ◽  
2020 ◽  
Vol 25 (8) ◽  
pp. 1803
Author(s):  
Serena Esposito ◽  
Antonello Marocco ◽  
Gianfranco Dell’Agli ◽  
Barbara Bonelli ◽  
Franca Mannu ◽  
...  
Keyword(s):  
Human Blood ◽  
Chemical Properties ◽  
Industrial Process ◽  
High Sensitivity ◽  
Point Of View ◽  
The Novel ◽  
Magnetic Adsorbents ◽  
Physico Chemical ◽  
Magnetic Metal ◽  
Biological Entities

In this work, three novel magnetic metal–ceramic nanocomposites were obtained by thermally treating Fe-exchanged zeolites (either A or X) under reducing atmosphere at relatively mild temperatures (750–800 °C). The so-obtained materials were thoroughly characterized from the point of view of their physico-chemical properties and, then, used as magnetic adsorbents in the separation of the target gene factors V and RNASE and of the Staphylococcus aureus bacteria DNA from human blood. Such results were compared with those obtained by using a top ranking commercial separation system (namely, SiMAG-N-DNA by Chemicell). The results obtained by using the novel magnetic adsorbents were similar to (or even better than) those obtained by using the commercial system, both during manual and automated separations, provided that a proper protocol was adopted. Particularly, the novel magnetic adsorbents showed high sensitivity during tests performed with small volumes of blood. Finally, the feasible production of such magnetic adsorbents by an industrial process was envisaged as well.

ChemInform Abstract: Luminacins: A Family of Capillary Tube Formation Inhibitors from Streptomyces sp. Part 1. Taxonomy, Fermentation, Isolation, Physico-Chemical Properties and Structure Elucidation.

ChemInform ◽  
2001 ◽  
Vol 32 (12) ◽  
pp. no-no
Author(s):  
Nobuaki Naruse ◽  
Rena Kageyama-Kawase ◽  
Yasuhiro Funahashi ◽  
Toshiaki Wakabayashi ◽  
Yoshio Watanabe ◽  
...  
Keyword(s):  
Structure Elucidation ◽  
Capillary Tube ◽  
Chemical Properties ◽  
Tube Formation ◽  
Streptomyces Sp ◽  
Physico Chemical

The chemo-enzymatic modification and degumming of hemp fiber by the laccase-2,2,6,6-tetramethylpiperidine-1-oxyl radical-hemicellulase system and physico-chemical properties of the products

2018 ◽  
Vol 89 (12) ◽  
pp. 2433-2443 ◽  
Author(s):  
Xiang Yeping ◽  
Yu Jianyong ◽  
Liu Liu ◽  
Zhang Ruiyun ◽  
Qu Yongshuai ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Moisture Sorption ◽  
Strong Acid ◽  
Acetate Buffer Solution ◽  
Enzymatic Modification ◽  
Buffer Solution ◽  
Hemp Fiber ◽  
Hemp Fibers ◽  
Physico Chemical ◽  
Physical And Chemical

In this study, we found an environmentally friendly system in the degumming of hemp fiber without using a strong acid and alkali. The chemo-enzymatic modification and degumming of hemp fiber used an acetic acid–sodium acetate buffer solution containing laccase, hemicellulase and 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO) under a mild condition (pH = 5, T = 50℃). Through comparing and analyzing the physical and chemical properties of fiber products under different treatments, we found the method involving treatment with TEMPO/laccase/hemicellulase not only greatly removed most of the gum attached on the surface of the raw hemp fiber, but also introduced surface-active aldehyde and carboxyl groups into the fiber. The performances of the hemp fibers with different treatments were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy and X-ray diffraction. We also found the product was finer, with a lower content of non-cellulosic components and it had better water uptake properties (moisture sorption and water retention value), which has potential application values in textile industries.

scholarly journals Luminacins. A Family of Capillary Tube Formation Inhibitors from Streptomyces sp. I. Taxonomy, Fermentation, Isolation, Physico-chemical Properties and Structure Elucidation.

2000 ◽  
Vol 53 (6) ◽  
pp. 579-590 ◽  
Author(s):  
NOBUAKI NARUSE ◽  
RENA KAGEYAMA-KAWASE ◽  
YASUHIRO FUNAHASHI ◽  
TOSHIAKI WAKABAYASHI ◽  
YOSHIO WATANABE ◽  
...  
Keyword(s):  
Structure Elucidation ◽  
Capillary Tube ◽  
Chemical Properties ◽  
Tube Formation ◽  
Streptomyces Sp ◽  
Physico Chemical

scholarly journals Physico-Chemical Properties of Soybean Meal-Based Adhesives Reinforced by Ethylene Glycol Diglycidyl Ether and Modified Nanocrystalline Cellulose

Polymers ◽  
2017 ◽  
Vol 9 (12) ◽  
pp. 463 ◽  
Author(s):  
Xiaona Li ◽  
Mingsong Chen ◽  
Jizhi Zhang ◽  
Qiang Gao ◽  
Shifeng Zhang ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Soybean Meal ◽  
Chemical Properties ◽  
Diglycidyl Ether ◽  
Nanocrystalline Cellulose ◽  
Physico Chemical

Nanomaterials in Electrochemical Biosensor

2014 ◽  
Vol 995 ◽  
pp. 125-143 ◽  
Author(s):  
Md. Abdul Aziz ◽  
Munetaka Oyama
Keyword(s):  
High Surface ◽  
Chemical Properties ◽  
Volume Ratio ◽  
High Sensitivity ◽  
Electrochemical Biosensors ◽  
Surface Immobilization ◽  
Physico Chemical ◽  
Overall Performance ◽  
Detection Of Biomolecules ◽  
Affinity Biosensors

Nanomaterial based electrochemical method gain tremendous interest for the detection of biomolecules due to high sensitivity, selectivity, and low fabrication cost. High surface to volume ratio, excellent electrocatalytic properties of the nanomaterials plays important role for the sensitive and selective detection of biomolecules. For electrochemical biosensors, proper control of chemical, electrochemical and physical properties, as well as their functionalization and surface immobilization significantly influences the overall performance. This chapter gives an overview of the importance of the development of nanomaterials based electrochemical biosensors; particularly direct electrooxidation-or electroreduction-based biosensors, catalysis-based biosensors, and label-based affinity biosensors. In addition, fabrication methods including modification of electrode surface with nanomaterials, tailoring their physico-chemical properties, and functionalization with chemicals or biomolecules are also highlighted.

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