DTG and DTA studies on fungical polysaccharides

Ramos-Sánchez, M.C.; Leal, J.A.; Martín‐Gil, Jesús; Martín-Gil, F.J.

doi:10.1016/0040-6031(88)85217-1

Cited by 4 publications

(4 citation statements)

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“…4), three thermal decomposition processes took place at a maximum rate in the ranges 186-260 1C (event 1), 281-331 1C (event 2), and 415-530 1C (event 3). According to previous TGA studies on the cell wall of fungal particles (Ramos-Sá nchez et al, 1988;Ramos-Sá nchez & Rodríguez-Torres, 1991), the temperature range of event 1 corresponds to the thermal decomposition of polysaccharides with weak thermal stability, i.e., mannosamine hydrochloride, galactosamine hydrochloride, and N-acetylglucosamine (Table 3). At the temperature ranges of thermal events 2 and 3, thermal decomposition of chitin-glucans and protein/fatty acids, highly stable materials with strong linkage between polymers, takes place in sequence (Ramos-Sá nchez et al, 1988).…”

Section: Discussionmentioning

confidence: 99%

“…The cell wall of fungi is a complex, multilayered structure formed by two major polysaccharides, chitin-glucan and glucomannan (Ramos-Sá nchez, Leal, Martin-Gil, & Martin-Gil, 1988;Ramos-Sá nchez & Rodríguez-Torres, 1991). From TGA of sampled fungal bioaerosols, we obtained the quantitative thermal characteristics, e.g., derivation of kinetic parameter constants and thermal weight loss information (Snyder et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

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Size reduction of Aspergillus versicolor fungal bioaerosols during a thermal heating process in continuous-flow system

Jung

Lee

Kim

et al. 2010

Journal of Aerosol Science

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Size reduction of Aspergillus versicolor fungal bioaerosols during a thermal heating process in continuous-flow system

Jung

Lee

Kim

et al. 2010

Journal of Aerosol Science

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“…The first endothermic peak corresponds to the early removal of adsorbed water, while the second endothermic peak corresponds to the onset of thermal decomposition of organic matter (Fig. 7) [38,42,43]. It is well-known [37,[40][41][42] that the pyrolysis of polysaccharides is initiated by random destruction of glycosidic bonds with the subsequent decomposition.…”

Section: Thermal Analysismentioning

confidence: 99%

“…7) [38,42,43]. It is well-known [37,[40][41][42] that the pyrolysis of polysaccharides is initiated by random destruction of glycosidic bonds with the subsequent decomposition. Thermograms contain peaks at 254°C and 209°C for the GM and SGM, respectively.…”

Section: Thermal Analysismentioning

confidence: 99%

«Green» synthesis and characterization of galactomannan sulfates obtained using sulfamic acid

Kazachenko

Malyar

Vasilyeva

et al. 2020

Biomass Conv. Bioref.

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The "green" synthesis of galactomannan sulfates using a sulfamic acid-urea mixture has been studied for the first time. The effect of the time and temperature of the galactomannan sulfation process on the degree of substitution of galactomannan sulfates has been investigated. It is shown that, at a temperature of 70°C with an increase in the process time up to 120 min, the degree of substitution increases up to 0.70. An increase in the process temperature up to 80°C leads to the production of galactomannan sulfates with a degree of substitution of 1.67. With a further increase in the process temperature to 90°C, the galactomannan structure is partially destructed, and the degree of substitution decreases. Embedding of the sulfate groups into the galactomannan structure has been confirmed by elemental analysis and Fourier-transform infrared spectroscopy. In addition, the initial and sulfated galactomannans have been characterized by X-ray diffraction, scanning electron microscopy, atomic force microscopy, and gel permeation chromatography. The thermal analysis shows that the initial galactomannan exhibits endothermic peaks at 254 and 294°C and an exothermic peak at 315°C, while sulfated galactomannan exhibits endothermic peaks at 209 and 275°C and an exothermic peak at 281°C. Using atomic force microscopy, it has been shown that the sulfated galactomannan film consists of spherical particles with an average diameter of 200-300 nm; according to the phase contrast data, it has the uniform composition without extraneous impurities.

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Modification of garlic skin dietary fiber with twin-screw extrusion process and in vivo evaluation of Pb binding

Guo

Wan

et al. 2018

Food Chemistry

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DTG and DTA studies on fungical polysaccharides

Cited by 4 publications

References 1 publication

Size reduction of Aspergillus versicolor fungal bioaerosols during a thermal heating process in continuous-flow system

Size reduction of Aspergillus versicolor fungal bioaerosols during a thermal heating process in continuous-flow system

«Green» synthesis and characterization of galactomannan sulfates obtained using sulfamic acid

Modification of garlic skin dietary fiber with twin-screw extrusion process and in vivo evaluation of Pb binding

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