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Relevant bibliographies by topics / Polysaccharides – Analysis

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Dissertations / Theses

Academic literature on the topic 'Polysaccharides – Analysis'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Dissertations / Theses on the topic "Polysaccharides – Analysis"

1

Galloway, Andrew Craig. "Analysis of polysaccharides released by plant roots." Thesis, University of Leeds, 2017. http://etheses.whiterose.ac.uk/19133/.

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Plant roots have a dynamic relationship with the surrounding soil, which forms a vital interface for the terrestrial biosphere. Without a strong interface with soil, plants could not extract the necessary resources needed for growth. As a part of a multifaceted strategy, plant roots release a variety of high and low molecular weight compounds into the soil. This exudate is believed to increase water and nutrient uptake, form the first barrier of defence, and aid in the symbiosis with fungi and bacteria. This investigation reports on the identity and biochemistry of the polysaccharides released

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2

Zaccheus, Mona. "Structural and Conformational Studies of Oligo- and Polysaccharides." Doctoral thesis, Stockholms universitet, Institutionen för organisk kemi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-75050.

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The focus of this thesis is to examine the structural properties of polysaccharides produced by bacteria, as well as the dynamic and conformational behavior of a synthetically derived oligosaccharide. The primary structures of the O-polysaccharide repeating units of four different Escherichia coli (E. coli) strains, namely O175, O177, O103 and TD2158, as well as the first report of a capsular polysaccharide produced by lactic acid bacteria Leuconostoc mesenteroides ssp. cremoris PIA2 are reported in paper I–V. Structural analyses have been performed using a combination of nuclear magnetic reso

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3

Li, Lifeng. "Quality analysis of bioactive polysaccharides in Chinese medicines." HKBU Institutional Repository, 2019. https://repository.hkbu.edu.hk/etd_oa/664.

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Polysaccharides are abundant in Chinese medicines (CMs) and play important roles in these materials' bioactivities. But at present, the polysaccharides are seldom incorporated into the quality assessment system of CMs. One of the big bottlenecks encountered is the difficulties in quality analysis due to their large molecular mass, diverse and complex chemical structure. Hereby, in current study, evidence and improved analysis approaches related to polysaccharides quality are proposed by employing several CMs as objectives. Firstly, Lingzhi (Ganoderma lucidum and G. sinense) was used to provide

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4

Guan, Jia. "Qualitative analysis of polysaccharides from natural Cordyceps sinensis." Thesis, University of Macau, 2011. http://umaclib3.umac.mo/record=b2492792.

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5

Xue, Jie. "In situ analysis of grass cell wall polysaccharides." Thesis, University of Leeds, 2013. http://etheses.whiterose.ac.uk/6345/.

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Plant cell walls are important resources of biomass and renewable energy. Miscanthus species are fast growing grasses that had been suggested to be potential bioenergy crops. Miscanthus x giganteus (M. x giganteus) grows faster and taller than its parents - M. sacchariflorus and M. sinensis. Wheat is the major food crop for human beings. Brachypodium distachyon is considered to be a model plant as it has a small genome size and rapid life cycle. In this study, cell wall polysaccharides in stems of the five grass species at different growth stages have been determined using an indirect immunofl

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6

Benians, Thomas Anthony Scott. "In situ analysis of cotton fibre cell wall polysaccharides." Thesis, University of Leeds, 2012. http://etheses.whiterose.ac.uk/5433/.

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The cotton fibre is one of the most economically important cells in the world. Each year, over 25 million tonnes are harvested and the industry is responsible for 300 million jobs world-wide, with revenues of over $120 billion in the USA alone. For such an important cell there is little known about its cell wall composition as well as the functional roles of these polysaccharides during fibre development. Although much work has already been done on the cotton fibre transcriptome, a study of cell wall composition during development and maturation is crucial in linking these data to further unde

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7

Wong, Tin Long. "Oligosaccharides approach for the qualitative analysis of dendrobium officinale polysaccharides." HKBU Institutional Repository, 2019. https://repository.hkbu.edu.hk/etd_oa/689.

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Numerous of studies have reported that polysaccharides have many bioactivities including immune system modulation, anti-oxidative and anti-tumor activities. Because herbal materials are rich in polysaccharides, some of the herbs like Dendrobium offcinale, its polysaccharide marker (DOP) has been applied in the quality analysis of polysaccharides in D. officinale by high performance gel permeation chromatography (HPGPC). However, such polysaccharide marker is not presented in every herb, and DOP also has limitation in monitoring herb formula. In addition, even though the same herbal materials a

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8

Li, Min. "Immunomodulatory activity of polysaccharides from garlic and Chinese yam." Thesis, University of Macau, 2017. http://umaclib3.umac.mo/record=b3690874.

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9

Nguyen, Hoang Chung. "Improvement and analysis of paper properties by adding modified polysaccharides." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-211261.

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Polysaccharides are now popularly used in paper technology since they are able to improve mechanical properties of the paper. Xylan and pectin are two natural polymers that have a wide range of applications nowadays. These two polysaccharides can be used in their native forms as well as derivatives. In this study, xylan and pectin were modified to obtain cationic derivatives before adding into the paper for enhancement. The work was motivated by the fact that xylan and pectin share the same negative surface properties as cellulose. This leads to a slight repulsion effect between them once th

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10

Mangin, Catherine M. "Analysis of carrageenans using capillary electrophoresis." Thesis, University of York, 2000. http://etheses.whiterose.ac.uk/14043/.

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This thesis reports the use of capillary electrophoresis (CE) for the analysis of carrageenans, anionic polysaccharides extracted from red seaweeds and widely used in the food industry for their gelling and thickening properties. The three main types, kappa, iota and lambda, differ in the number of sulfate groups and the presence or absence of a 3,6-anhydro bridge in the disaccharide residue repeat unit. CE separates analytes according to their charge to frictional coefficient ratios, therefore it is suitable to separate these biopolymers. In order to detect polysaccharides in CE, our approach

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