DTG and dta studies on typical sugars

Ramos-Sánchez, M.C.; Rey, F.; Rodríguez, Matías L.; Martín-Gil, F.J.; Martín‐Gil, Jesús

doi:10.1016/0040-6031(88)85216-x

Cited by 30 publications

(12 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…DTA curves showed there was a dextrin endothermic decomposition around 300 o C, corroborated by the huge weight loss observed in the TGA curves. This result agrees with those from the literature 14 . …”

Section: Resultssupporting

confidence: 83%

A low-cost ultrasonic spray dryer to produce spherical microparticles from polymeric matrices

Luz¹,

Pires²,

Serra³

2007

Quím. Nova

View full text Add to dashboard Cite

Recebido em 5/4/06; aceito em 10/11/06; publicado na web em 29/8/07The spray-drying technique has been widely used for drying heat-sensitive foods, pharmaceuticals, and other substances, because it leads to rapid solvent evaporation from droplets. This method involves the transformation of a feed from a fluid state into a dried particulate, by spraying the feed into a hot medium. Despite being most often considered a dehydration process, spray drying can also be used as an encapsulation method. Therefore, this work proposes the use of a simple and low-cost ultrasonic spray dryer system to produce spherical microparticles. This equipment was successfully applied to the preparation of dextrin microspheres on a laboratory scale and for academic purposes.

show abstract

Section: Resultssupporting

confidence: 83%

A low-cost ultrasonic spray dryer to produce spherical microparticles from polymeric matrices

Luz¹,

Pires²,

Serra³

2007

Quím. Nova

View full text Add to dashboard Cite

show abstract

“…From M‐KGM‐1 (DS 0.27) to M‐KGM‐54 (DS 0.80), the partial DS value at position 6 in glucose residues increased from 0.14 to 0.37, and from 0.12 to 0.34 in mannose residues. Thus, there are less free 6‐OH available for intramolecular attack at C‐1 and subsequent chain scission under formation of 1,6‐anhydro sugars …”

Section: Resultsmentioning

confidence: 99%

Influence of Stereochemistry on Relative Reactivities of Glucosyl and Mannosyl Residues in Konjac Glucomannan (KGM)

Zhang

Mischnick

2017

Macromol. Chem. Phys.

View full text Add to dashboard Cite

Methylation in water with NaOH/MeI is applied to study the influence of the stereochemistry on relative reactivities of d‐mannosyl (M) compared to d‐glucosyl (G) units in konjac glucomannan (KGM). The pH is kept constant at 13.6 over the course of the reaction and aliquots are removed after various time intervals. Methyl distribution in G and M residues is determined after perethylation, hydrolysis, and conversion to O‐ethyl‐O‐methyl‐alditol acetates. The order of relative rate constants determined for the O‐methyl Konjac glucomannans (M‐KGMs) in degree of substitution (DS) range 0.3–0.8 is G‐k6 > M‐k6 > G‐k2 ≈ M‐k2 > M‐k3 > G‐k3. Oligosaccharides obtained by partial hydrolysis after full protection of M‐KGM with MeI‐d3 are labeled with m‐amino‐benzoic acid and measured by liquid chromatography–electrospray ionization–mass spectrometry. DS/DP profiles are in full agreement with random distribution of methyl groups. Thermal properties of M‐KGMs are analyzed by differential scanning calorimetry and thermogravimetric analysis. Decomposition temperature increases with DS, while the temperature of an endothermic change decreases.

show abstract

“…2). Exothermic peak shown in DSC curve corresponds to ongoing thermal and oxidative decomposition of the polymer, vaporization and elimination of volatile products [16,17]. Pyrolysis of polysaccharides initiates by random breakdown of glycosidic bonds, followed by further decomposition [18,19].…”

Section: Thermal Analysismentioning

confidence: 99%

X-ray diffraction, IR spectroscopy and thermal characterization of partially hydrolyzed guar gum

Mudgil

Barak

Khatkar

2012

International Journal of Biological Macromolecules

315

129

View full text Add to dashboard Cite

DTG and dta studies on typical sugars

Cited by 30 publications

References 1 publication

A low-cost ultrasonic spray dryer to produce spherical microparticles from polymeric matrices

A low-cost ultrasonic spray dryer to produce spherical microparticles from polymeric matrices

Influence of Stereochemistry on Relative Reactivities of Glucosyl and Mannosyl Residues in Konjac Glucomannan (KGM)

X-ray diffraction, IR spectroscopy and thermal characterization of partially hydrolyzed guar gum

Contact Info

Product

Resources

About