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AbstractAbstract
[en] The methods of isolation of fucoidans and determination of their chemical structures are reviewed. The fucoidans represent sulfated polysaccharides of brown algae, the composition of which varies from simple fucan sulfates to complex heteropolysaccharides. The currently known structures of such biopolymers are presented. A variety of the biological activities of fucoidans is briefly summarised.
Primary Subject
Source
Available from http://dx.doi.org/10.1070/RC2009v078n08ABEH004063; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Literature Type
Bibliography
Journal
Russian Chemical Reviews (Print); ISSN 0036-021X;
; v. 78(8); p. 785-799

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AbstractAbstract
[en] Mushrooms contain abundant of bioactive compound (polysaccharides and protein) which have benefit to health include immunomodulatory, anticancer, antioxidant and hypocholesterolemic effect. In this study, Pleurotus flabellatus was produced in submerged culture fermentation (SCF) due to its ability to be produced at higher quantity in a compact space and shorter period compared to the conventional method using solid state fermentation. P. flabellatus mycelium were extracted by hot-water extraction method which included boiling with hot water, addition of ethanol, followed by refrigerated centrifuge and lyophilization. The yield of P. flabellatus polysaccharides was 0.95 %. (author)
Primary Subject
Source
2018; 1 p; R&D Seminar 2018: Research and Development Seminar 2018; Bangi (Malaysia); 30 Oct - 2 Nov 2018; Available in Malaysian Nuclear Agency Document Delivery Center; Poster presentation
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Miscellaneous
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Conference
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Lindsay, T.W.; Kubiatowicz, D.O.
Minnesota Mining and Mfg. Co., St. Paul (USA)1973
Minnesota Mining and Mfg. Co., St. Paul (USA)1973
AbstractAbstract
No abstract available
Original Title
suitable for parenteral administration
Source
17 Apr 1973; 12 p; CA PATENT DOCUMENT 924639; Available from Commissioner of Patents, Ottawa; Available from Commissioner of Patents, Ottawa.
Record Type
Patent
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Povolo, F.
International Centre for Theoretical Physics, Trieste (Italy)1990
International Centre for Theoretical Physics, Trieste (Italy)1990
AbstractAbstract
[en] A procedure to obtain the parameters of the constitutive equations used to describe the shear-thinning behaviour of polysaccharides is presented. It is shown that the existence or not of a master log viscosity-log shear rate curve, for all concentrations, is independent from the constitutive equation used to describe the data. Once the master curve is constructed it can be used to obtain the parameter of the constitutive equation with a higher accuracy, since the experimental range is extended. Some application to experimental data on polysaccharides, reported in the literature, are presented. A fitting procedure to usual constitutive equations is given based on the master curve and on its first derivative. Finally, the applicability of a method proposed recently in the literature, to obtain the parameters of a constitutive equation for polysaccharides, is discussed in detail. (author). 10 refs, 10 figs, 2 tabs
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Source
Jul 1990; 24 p
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Report
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AbstractAbstract
[en] The review addresses the application of synthetic oligosaccharides related to fragments of capsular polysaccharides from different serotypes of the bacterium Streptococcus pneumoniae for the design of third-generation pneumococcal conjugate vaccines. Special focus is given to characteristic features of the chemical structures of oligosaccharides required for the induction of the protective immune response when using synthetic glycoconjugate vaccines based on oligosaccharide ligands and carrier proteins. The bibliography includes 101 references
Primary Subject
Source
Available from http://dx.doi.org/10.1070/RCR4574; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Russian Chemical Reviews (Print); ISSN 0036-021X;
; v. 84(11); p. 1100-1113

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Ramasamy, Radha Perumal; Begum, Suraiya; Aswal, Vinod K.
2nd Asia Oceania Conference on Neutron Scattering(AOCNS) 20152015
2nd Asia Oceania Conference on Neutron Scattering(AOCNS) 20152015
AbstractAbstract
[en] Biopolymers are studied extensively due to its wide applications in the field of bio-technology, micro fluidics and lab on chip devices. Chitosan is natural biopolymer derived from chitin. It has wide applications in bio-medical engineering because of its biocompatibility and biodegradability. Also, chitosan act as reducing and stabilizing agent for the metal ions. Chitosan is also a good candidate in batteries as membranes. It is therefore important to study the conformational changes of chitosan. In this research work, we used SANS to understand the modifications in the radius of gyration (Rg) values of chitosan polymer in solution and in presence of HAuCl4 and LiClO4. Chitosan solution became a gel in the presence of HAuCl4 enabling to study the associated conformational change in chitosan in gels. We have also made films of chitosan, chitosan- Au and Chitosan- LiClO4 and studied the associated conformational changes in chitosan. Gels and films were formed by varying the concentration of HAuCl4. Lower concentration of HAuCl4 gave films while higher concentration of HAuCl4 gave gels. The Imaging was carried out for the samples using TEM and SEM. SANS shows that the chitosan solution (liquid) had greater Rg value than the chitosan film. The Rg value did not change in gels from that of solution. There was no correlation length for the fitting for chitosan in solution, however there was correlation length observed in the gels. This indicates that in gels the chitosan units are more localized than in solution phase. Interestingly, chitosan-Au-Li film shows the formation of star like structures which are not observed in case of gels. Hence we conclude that the presence of Lithium can induce conformational changes in chitosan films while HAuCl4 can localize chitosan units in solution leading to formation of gels.
Primary Subject
Source
ICMS Australasia Pty Ltd (Australia); 276 p; Jul 2015; p. 58; AOCNS 2015: 2. Asia Oceania Conference on Neutron Scattering; Sydney, NSW (Australia); 19-23 Jul 2015; Available from http://www.aocns-2015.com/index.html
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AbstractAbstract
[en] Nuclear Magnetic Resonance has become the choice for structural studies, identity assays and simultaneous quantification of active pharmaceutical ingredient of different polysaccharide-based vaccine. In the last two decades, the application of quantitative Nuclear Magnetic Resonance had an increasing impact to support several quantification necessities. The technique involves experiments with several modified parameters in order to obtain spectra with quantifiable signals. The present review is supported by some recent relevant reports and it discusses several applications of NMR in carbohydrate-based vaccines. Moreover, it emphasizes and describes several parameters and applications of quantitative Nuclear Magnetic Resonance
Original Title
Resonancia magnetica nuclear: nuevas aplicaciones en la cuantificacion y la evaluacion de intermediarios de vacunas basadas en polisacaridos
Primary Subject
Source
Also available on line at the web site http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1025-028X2013000100007&lng=es&nrm=iso&tlng=es; 47 refs., 3figs.
Record Type
Journal Article
Journal
Vaccimonitor; ISSN 1025-028X;
; v. 22(1); vp

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AbstractAbstract
[en] The use of nitroxide radicals in the selective oxidation of alcohols is considered. Attention is focused on the oxidation of polysaccharides as a method of preparation of polyuronic acids, aldehydes and hemiacetals.
Primary Subject
Source
Available from http://dx.doi.org/10.1070/RC2010v079n01ABEH004074; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Russian Chemical Reviews (Print); ISSN 0036-021X;
; v. 79(1); p. 63-75

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Zielinska, K.; Chostenko, A.G.; Truszkowski, S.
Proceedings of the 23. International Symposium on Physico-Chemical Methods of Separation - Ars Separatoria 20082008
Proceedings of the 23. International Symposium on Physico-Chemical Methods of Separation - Ars Separatoria 20082008
AbstractAbstract
No abstract available
Primary Subject
Source
Koter, S.; Koter, I. (eds.); Nicolaus Copernicus University in Torun (Poland); Wroclaw University of Technology, Wroclaw (Poland); University of Technology and Life Sciences, Bydgoszcz (Poland); 384 p; ISBN 978-83-231-2208-1;
; 2008; p. 377-378; 23. International Symposium on Physico-Chemical Methods of the Mixtures Separation - Ars Separatoria 2008; Torun (Poland); 6-9 Jul 2008; GRANT 32-270/BW/2008; Available from Nicolaus Copernicus University in Torun; Also available from Wroclaw University of Technology; Also available from University of Technology and Life Sciences; Also available at http://www.arsseparatoria.chem.uni.torun.pl/2008Symp/contents08.html; 1 fig.

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AbstractAbstract
[en] Radioautography presents the possibility to study the steps of formation and the pathway of migration of glycoproteins and polyglycans. The steps of formation are vizualized by radioautographic techniques using a short pulse. The step detected depends on the precursor used. The pathways of macromolecule migrations are followed by subsequent chases. Radioautographic techniques applied to glycoproteins and polyglycans are not basically different from those used for other compounds. However, some specific methodological points are emphasized: choice of the precursors; administration of the precursors; sites of incorporation. The most valuable results concern the dynamic study of the synthetic process. This technique also has the advantage of giving quantitative data
Primary Subject
Source
Meeting on techniques in radioautography; Paris, France; 26 Sep - 7 Oct 1975
Record Type
Journal Article
Literature Type
Conference
Journal
Journal de Microscopie et de Biologie Cellulaire; v. 27(2-3); p. 207-214
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