Unraveling the mechanism of thermal and thermo-oxidative degradation of tannic acid

Xia, Zhiyu; Singh, Ankita; Kiratitanavit, Weeradech; Mosurkal, Ravi; Kumar, Jayant; Nagarajan, Ramaswamy

doi:10.1016/j.tca.2015.02.016

Cited by 174 publications

(127 citation statements)

References 14 publications

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“…. HTyr‐MC showed a multi‐step degradation behaviour as observed for other active principals or oils . In the dynamic method, the thermogravimetric curves (Figs (a), (b)) indicated that mass losses started at temperatures lower than 100 °C due to the loss of volatile compounds under both nitrogen and air flow.…”

Section: Resultsmentioning

confidence: 72%

“…(a)), the first endothermic degradation peak of HTyr‐MC was measured at around 110 °C and showed a 4% − 5% weight loss usually corresponding to the loss of volatile compounds. The second and the main degradation peaks, centred at 256 °C and 360 °C and characterized by a 35% and 88% weight loss, respectively, were due to the decomposition of more stable compounds …”

Section: Resultsmentioning

confidence: 99%

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Effect of hydroxytyrosol methyl carbonate on the thermal, migration and antioxidant properties of PVA‐based films for active food packaging

Fortunati

Luzi

Dugo

et al. 2016

Polymer International

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Hydroxytyrosol methyl carbonate (HTyr-MC), a synthetic non-cytotoxic hydroxytyrosol-derived compound showing excellent antioxidant capacity, was obtained in high yield and purity by an ecofriendly procedure and used as active ingredient for poly(vinyl alcohol) (PVA) matrix. Novel PVA/HTyr-MC binary films were developed by solvent casting in water adding 2%, 5% and 10% by weight of HTyr-MC to PVA. Morphological, thermal and optical properties, water absorption capacity, migration to food simulant and antioxidant characteristics of PVA/HTyr-MC films were finely investigated in view of their potential application as active food packaging materials. The morphological and transparency studies underlined that HTyr-MC was homogeneously dispersed in the PVA matrix and it is able to act as a nucleation agent, influencing the diffusion processes of the water through the polymer chain without negatively affecting the release of the active ingredient. The overall migration levels for all studied formulations were lower than the migration limits permitted by the current legislation for food contact materials while the data of antioxidant assays demonstrated a good antioxidant activity induced by HTyr-MC presence also at the lowest concentration. These novel films represent a valid and sustainable alternative to non-ecofriendly-based materials.

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Section: Resultsmentioning

confidence: 72%

Section: Resultsmentioning

confidence: 99%

Effect of hydroxytyrosol methyl carbonate on the thermal, migration and antioxidant properties of PVA‐based films for active food packaging

Fortunati

Luzi

Dugo

et al. 2016

Polymer International

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“…Although both zein alone [31] and tannic acid alone [32] degrade at much higher temperatures, this high curing temperature of 160 °C may lead to simultaneous reactions that degraded the mixture early. Although both zein alone [31] and tannic acid alone [32] degrade at much higher temperatures, this high curing temperature of 160 °C may lead to simultaneous reactions that degraded the mixture early.…”

Section: Enhancing Performance Via Temperature Changesmentioning

confidence: 99%

Strong Adhesives from Corn Protein and Tannic Acid

Schmidt

Woods

Fung

et al. 2019

Advanced Sustainable Systems

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Modern society is in great need of environmentally sustainable and low‐cost alternatives to some petroleum derived adhesives. To allow recycling and avoid pollution, adhesives for single use products including packaging are of particular interest. Potential candidates for such applications are the adhesive formulations of corn zein protein and tannic acid presented here. High strength adhesive bonding is found when the formulations are optimized with regard to composition, pH, and curing temperature. Bonding is tested on aluminum substrates using lap shear configurations. Adhesion strengths exceed the minimal bonding of zein‐only controls. Maximum adhesion for zein and tannic acid is as strong as commercial Super Glue when measured under similar conditions. The system forms nanometer and micrometer sized pores throughout the bulk adhesive. A low amount of tannic acid and neutral pH of the strongest adhesive make the corn zein–tannic acid system potentially appealing for cost efficient adhesives used in packaging, cosmetics, and other single use applications where biomedical grade purity is not required.

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“…Over the years, many techniques have been used including pyrolysis mass spectrometry [9,10], pyrolysis gas chromatography [11], thermal analysis (TG, DSC, TG/FTIR/MS) [12][13][14][15], etc., to study the relationship between a material structure and its thermal stability and to evaluate the thermal degradation mechanism.…”

Section: Introductionmentioning

confidence: 99%

Thermal behavior of hydrophobically modified hydrogels using TGA/FTIR/MS analysis technique

et al. 2015

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Unraveling the mechanism of thermal and thermo-oxidative degradation of tannic acid

Cited by 174 publications

References 14 publications

Effect of hydroxytyrosol methyl carbonate on the thermal, migration and antioxidant properties of PVA‐based films for active food packaging

Effect of hydroxytyrosol methyl carbonate on the thermal, migration and antioxidant properties of PVA‐based films for active food packaging

Strong Adhesives from Corn Protein and Tannic Acid

Thermal behavior of hydrophobically modified hydrogels using TGA/FTIR/MS analysis technique

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