Thermolysis of Carbohydrates in Oxygen‐free Atmosphere Part IV. Thermal Gravimetric and Differential Thermal Analysis of Mono‐ and Disaccharides

Tomasik, Piotr; Wiejak, Stanisław; Bączkowicz, Małgorzata

doi:10.1002/star.19870390307

Cited by 10 publications

(2 citation statements)

References 9 publications

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“…Through the ubiquitous presence of sweeteners (in form of fructose), there is a need for the development of rapid and accurate analytical methods to monitor daily sugar intake. Established methods for the quantitative and qualitative detection of d ‐fructose include chromatographic (such as TLC, GC coupled with MS and HPLC) electrophoretic, titration, gravimetric, calorimetric fluorimetric and spectrophotometric methods. While these methods are sensitive they are time consuming and require trained laboratory staff.…”

Section: Introductionmentioning

confidence: 99%

The Immobilization of Fructose Dehydrogenase on Nanoporous Gold Electrodes for the Detection of Fructose

2017

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Nanoporous gold electrodes were utilized as a support for the detection of d‐fructose. The immobilization of fructose dehydrogenase was achieved by adsorption on thiol‐ and diazonium‐bound carboxylic acid functional groups and subsequent crosslinking through cabodiimide‐initiated amide bond formation. The biosensor showed a linear response in the range 0.05–0.3 mM of d‐fructose with a sensitivity of 3.7±0.2 μA cm−2 mM−1 and a limit of detection of 1.2 μM. The response of the biosensor in a range of natural sweeteners and beverages compared very favorably to the results obtained by a commercially available kit. Accurate readings were obtainable after a very fast response time of less than 5 seconds. The biosensor showed high specificity towards d‐fructose in the presence of interfering sugars.

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Section: Introductionmentioning

confidence: 99%

The Immobilization of Fructose Dehydrogenase on Nanoporous Gold Electrodes for the Detection of Fructose

2017

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“…The thermal stability of hydrogels was investigated by TGA and both PFMA and PGMA xerogels present three degradation stages under an inert atmosphere. The first and second stages are related to carbohydrate degradation, 47,48 and the third stage is related to the backbone depolymerization and random cleavage. 10 The PFMA and PGMA xerogels present initial thermal degradation at around 155 ∘ C and 175 ∘ C, respectively, following the same tendencies observed for the fructose and glucose pyrolises.…”

Section: Structural Characterizationmentioning

confidence: 99%

Macroporous hydrogels based on carbohydrates monomethacrylates and dimethacrylates: singular properties from carbohydrate‐based crosslinkers

Perin

Fonseca

Felisberti

2019

J of Chemical Tech & Biotech

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BACKGROUND Readily available feedstock and biocompatibility make carbohydrate‐based hydrogels promising materials for biomedical applications. However, carbohydrate‐based crosslinkers are rather underexplored when compared with crosslinkers derived from fossil resources. In this study, novel fully bio‐based hydrogels derived from enzymatically produced d‐fructose and d‐glucose methacrylate monomers were synthesized with different amounts of d‐fructose dimethacrylate crosslinker. RESULTS The use of a carbohydrate‐based crosslinker endows hydrogels with high swelling coefficients, up to 2400%, and superior mechanical resistance (compressive modulus up to 9.5 kPa with a maximum stress up to 50 kPa) compared with conventional crosslinkers based on fossil resources. Hydrogels shape and crosslinking density influences hydrogel morphology, swelling behavior and mechanical resistance. Moreover, hydrogels presented cell viability, biodegradability and hydrolysis‐resistance over a wide range of pH. CONCLUSION The use of a highly hydrophilic crosslinker based on carbohydrate for hydrogels synthesis enables the use of high crosslinker concentration, which improves mechanical properties, however with minor loss of the water swelling capacity, compared with conventional fossil‐based crosslinkers. This is an important advantage over conventional crosslinkers based on fossil resources. Moreover, slab hydrogels hold higher stress under compression–decompression cycles, and present higher resistance to hydrolysis in basic medium due to the thicker pore walls than cylindrical ones. © 2019 Society of Chemical Industry

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Alternative Route to Non‐ammonia Caramels of High Tinctorial Strength

Sikora

Tomasik

1989

Starch Stärke

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Thermolysis of Carbohydrates in Oxygen‐free Atmosphere Part IV. Thermal Gravimetric and Differential Thermal Analysis of Mono‐ and Disaccharides

Cited by 10 publications

References 9 publications

The Immobilization of Fructose Dehydrogenase on Nanoporous Gold Electrodes for the Detection of Fructose

The Immobilization of Fructose Dehydrogenase on Nanoporous Gold Electrodes for the Detection of Fructose

Macroporous hydrogels based on carbohydrates monomethacrylates and dimethacrylates: singular properties from carbohydrate‐based crosslinkers

Alternative Route to Non‐ammonia Caramels of High Tinctorial Strength

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