Study of hydration of cross-linked high amylose starch by solid state 13C NMR spectroscopy

Thérien-Aubin, Héloı̈se; Janvier, Florence; Baille, Wilms E.; Zhu, X. X.; Marchessault, R. H.

doi:10.1016/j.carres.2007.04.014

Cited by 32 publications

(22 citation statements)

References 26 publications

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“…The results obtained(Therien-Aubin et al, 2007a) shows that dry CHAS I and II contained c.a. 20% of starch organized in B-type structure, while the hydrated CHAS contained, in both cases, c.a.…”

mentioning

confidence: 84%

“…The initial dry CHAS is mainly amorphous with traces of V-type crystalline structures (Therien-Aubin et al, 2007a). Upon hydration, the narrowing and the splitting of the peaks are observed (Fig.…”

Section: C Nmr Of Chas Tabletsmentioning

confidence: 95%

“…Upon hydration of starch, the amorphous domains are partially converted to B-type crystalline structures (Fig. 5) (Shiftan et al, 2000; Therien-Aubin, Janvier, Baille, Zhu, & Marchessault, 2007a). The B-type double helices act as new crosslinking points which limit the swelling and contribute to the shape retention by the formation of a tridimensional network in the whole tablet.…”

Section: C Nmr Of Chas Tabletsmentioning

confidence: 97%

“…The spectral decomposition of this region, along with variable contact time CP/MAS experiments, allows the quantitative determination of each polymorphs in the starch samples (Therien-Aubin et al, 2007a). Fig.…”

Section: C Nmr Of Chas Tabletsmentioning

confidence: 99%

“…The samples were spun at 8 kHz, and 1000-1800 scans were accumulated. The contact time varied from 0.01 to 11 ms (Therien-Aubin et al, 2007a).…”

Section: C Nmr Of Chas Tabletsmentioning

confidence: 99%

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NMR spectroscopy and imaging studies of pharmaceutical tablets made of starch

Thérien-Aubin

Zhu

2009

Carbohydrate Polymers

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mentioning

confidence: 84%

Section: C Nmr Of Chas Tabletsmentioning

confidence: 95%

Section: C Nmr Of Chas Tabletsmentioning

confidence: 97%

Section: C Nmr Of Chas Tabletsmentioning

confidence: 99%

“…The samples were spun at 8 kHz, and 1000-1800 scans were accumulated. The contact time varied from 0.01 to 11 ms (Therien-Aubin et al, 2007a).…”

Section: C Nmr Of Chas Tabletsmentioning

confidence: 99%

See 3 more Smart Citations

NMR spectroscopy and imaging studies of pharmaceutical tablets made of starch

Thérien-Aubin

Zhu

2009

Carbohydrate Polymers

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An Interesting Class of Porous Polymer—Revisiting the Structure of Mesoporous α‐d‐Polysaccharide Gels

et al. 2016

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The processes involved in the transformation of non-porous, native polysaccharides to their highly porous equivalents introduce significant molecular complexity and are not yet fully understood. In this paper, we propose that distinct changes in polysaccharide local short-range ordering promotes and directs the formation of meso- and micro-pores, which are investigated here using N2 sorption, FTIR, and solid-state (13)C NMR. It is found that an increase in the overall double helical amylose content, and their local association structures, are responsible for formation of the porous polysaccharide gel phase. An exciting consequence of this local ordering change is elegantly revealed using a (19)F NMR experiment, which identifies the stereochemistry-dependent diffusion of a fluorinated chiral probe molecule (1-phenyl-2,2,2-trifluoroethanol) from the meso- to the micro-pore region. This finding opens opportunities in the area of polysaccharide-based chiral stationary phases and asymmetric catalyst preparation.

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Production of Esterified Starches with Increased Resistant Starch Content by an α‐Hydroxy Acid‐Catalyzed Route

et al. 2018

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Resistant starch (RS) refers to the portion of starch that is not broken down by human enzymes in the small intestine, and thus reaches the large bowel of healthy individuals. In the large bowel RS is fermented by colonic microflora producing short chain fatty acids (SCFA) – predominantly acetate, propionate, and butyrate – that are known to contribute substantially to large bowel health. Currently, there is an increasing interest in obtaining RS by esterification of starch with target SCFA, due to its capacity to deliver significant quantities of the particular esterified SCFA to the colon. In the current contribution an α‐hydroxy acid‐catalyzed methodology, which has recently proven useful for esterifying starch, was used to produce acetylated, propionylated, and butyrylated corn starch samples with varying degree of substitution (DS) (0.05–0.75). Results showed the suitability of the route to produce the RS4 starch type, with RS contents that increased with DS as a consequence of a larger steric hindrance effect caused by a higher number of ester groups introduced. Data also indicated that the DS conferred to starch was the key factor conditioning its resistance, whereas RS content showed to be independent of the resulting esterified starch structure and the type of ester group introduced.

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Study of hydration of cross-linked high amylose starch by solid state 13C NMR spectroscopy

Cited by 32 publications

References 26 publications

NMR spectroscopy and imaging studies of pharmaceutical tablets made of starch

NMR spectroscopy and imaging studies of pharmaceutical tablets made of starch

An Interesting Class of Porous Polymer—Revisiting the Structure of Mesoporous α‐d‐Polysaccharide Gels

Production of Esterified Starches with Increased Resistant Starch Content by an α‐Hydroxy Acid‐Catalyzed Route

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