Moisture sorption characteristics and dynamic mechanical thermal analysis of dried petiole and rhizome of red water lily (Nymphaea x rubra)

Phahom, Traiphop; Roudaut, Gaëlle

doi:10.1007/s00231-022-03258-3

Cited by 5 publications

(4 citation statements)

References 47 publications

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“…In this section, water is retained within urea’s solid structure through capillary condensation, and its vaporization enthalpy is marginally greater than that of pure water. , The third region (RH > 74%) demonstrates urea going through deliquescence, as free water is found in a solvent-like state dissolving urea. Adsorbed water properties in this area closer resemble those of bulk water, allowing the water to act as a solvent and be accessible for chemical reactions with urea molecules . It can be observed that a higher RH (RH > 60%) leads to a minor increase in moisture content.…”

Section: Resultsmentioning

confidence: 91%

“…Adsorbed water properties in this area closer resemble those of bulk water, allowing the water to act as a solvent and be accessible for chemical reactions with urea molecules. 69 It can be observed that a higher RH (RH > 60%) leads to a minor increase in moisture content. A critical RH of approximately 74% was discovered, which is consistent with previous findings.…”

Section: Resultsmentioning

confidence: 96%

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Interactions of Urea Surfaces with Water as Relative Humidity Obtained from Dynamic Vapor Sorption Experiments, In Situ Single-Particle Raman Spectroscopy, and Ab Initio Calculations

Eisa,

Ragauskaitė,

Shi

et al. 2023

ACS Earth Space Chem.

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Urea is a critical nitrogen carrier molecule that is abundant in the environment due to its anthropogenic activity to enhance crop growth. The intrinsic link between its high solubility and volatilization, resulting in the reactive nitrogen species and CO2, especially under excessive relative humidity (RH) conditions, suggests that the urea hydrolysis-initiated decomposition reaction can be affecting the global nitrogen balance. Fundamental analysis of water as RH adsorption on urea particle surfaces was performed using a combination of dynamic vapor sorption (DVS) experiments, in situ single-particle Raman spectroscopy, and ab initio calculations. The DVS data acquired exhibited three RH adsorption regimes with urea with 74% RH dramatically changing adsorbate–urea interactions from monolayer- to multilayer-induced deliquescence. Several empirical kinetic models were utilized to understand the RH interaction with urea surfaces, and the Guggenheim–Anderson–de Boer model provided a good description of the adsorption at <60% RH values, while a Van Campen model was used to fit the data acquired during the urea crystal deliquescence. The experimental water sorption rate using the Van Campen model showed a gradual rise from 0.02 mg/min at 80% to 0.08 mg/min at 95% in agreement with Van Campen’s model of increasing trend, albeit at higher rates ranging from 0.03 mg/min at 80% to 0.1 mg/min at 95%. In situ Raman spectroscopy combined with optical images of a single particle showed that the urea 1009 cm–1 peak full width at half-maximum can provide in-depth information on the transient phenomena taking place on the urea particle surface as well as in the partially liquefied environment. Finally, density functional theory results suggested that Wulff’s reconstruction of a single urea crystal depended on the presence of higher crystalline planes; particularly, the (111) facet became significant together with (101) and (110), while in the presence of bulk H2O, (101) became the dominant facet. The results presented in this work will allow for a better understanding of urea–water vapor interactions in the environment at the molecular level including its potential for aerosol formation in the regions of high agricultural activity. Further, this study will allow us to better understand urea partitioning into soil pore volume where high RH is prevalent. Finally, it will provide a microscopic, single-particle understanding of the urea transformations in moist environments and pave the way for a new, nitrogen-efficient material fertilizer design.

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Section: Resultsmentioning

confidence: 91%

Section: Resultsmentioning

confidence: 96%

Interactions of Urea Surfaces with Water as Relative Humidity Obtained from Dynamic Vapor Sorption Experiments, In Situ Single-Particle Raman Spectroscopy, and Ab Initio Calculations

Eisa,

Ragauskaitė,

Shi

et al. 2023

ACS Earth Space Chem.

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“…Regarding the ash content, the petioles showed a high value (> 0.8%) in comparison with common fruit pulps from the Brazilian Amazon (< 0.5%) [10,11]. In contrast to V. amazonica, other water lilies that belong to the Nymphaeaceae family, such as the red water lily (Nymphaea x rubra) and the zenkeri red tiger (Nymphaea lotus Linn), present low moisture (5.86-6.40%) and high ash content (22.69-27.36%) in their petioles [12,13]. d Calculated based on the method recommended by ANVISA [14] The total protein content of fresh petioles was similar to other NCEP species reported in the literature such as the leaves of Xanthosoma taioba (3.05 g 100 g − 1 ) [15] and Amaranthus viridis (2.11 g 100 g − 1 )…”

Section: Centesimal Compositionmentioning

confidence: 99%

Nutritional properties, determination of phenolic compounds and antioxidant potential of Victoria amazonica (Poepp.) J.C. Sowerby petiole

Loiola

Kinupp

Nunomura

et al. 2023

Nutrire

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This study reported for the rst time the chemical pro le of the petiole of Victoria amazonica (Poepp.) J.C. Sowerby, a non-conventional edible plant (NCEP), and demonstrated its nutritional and functional potential. Its proximate composition was determined by verifying the ber, lipid, protein, ash, and carbohydrate contents in fresh samples. V. amazonica petiole has a high moisture content (97.62%), while has low amounts of protein, crude ber and carbohydrates (3.10%, 1.81%, and 5.78%, respectively).At 19.5 kcal g − 1 , this NCEP can be classi ed as a low-calorie food, especially due to low lipid content of 1.47%. Amongst the extracts and solvent-partitioned fractions, the ethyl acetate fraction showed the highest total phenolic content (25.47 GAE mg 100 g − 1 ) and antioxidant potential (IC 50 : 13.67 µg mL − 1 ), which were evaluated using the Folin-Ciocalteu and DPPH methods, respectively. In comparison with wellknown conventional fruits and plants, based on results obtained for the methanolic extract, the petiole showed a low total phenolic content (13.61 GAE mg 100 g − 1 ) and also an antioxidant potential (IC 50 : 50.12 µg mL − 1 ) that was 10-fold higher than the gallic acid reference standard. Five phenolic acids were identi ed by dereplication using liquid chromatography coupled to mass spectrometry (LC-DAD-ESI-Q-TOF-MS). Gallic, ferulic, p-coumaric and 3,4-dihydroxybenzoic acids, as well the avonoid quercetin-3-Orhamnoside, were identi ed in methanolic extract. As a low-carb and low-fat food, this unconventional edible plant can be incorporated into diets with dietary restrictions and can be classi ed as a functional food since it is a source of bioactive compounds.

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Section: Centesimal Compositionmentioning

confidence: 99%

Nutritional properties, determination of phenolic compounds and antioxidant potential of Victoria amazonica (Poepp.) J.C. Sowerby petiole

Loiola

Kinupp

Nunomura

et al. 2022

Preprint

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This study reported for the first time the chemical profile of the petiole of Victoria amazonica (Poepp.) J.C. Sowerby, a non-conventional edible plant (NCEP), and demonstrated its nutritional and functional potential. Its proximate composition was determined by verifying the fiber, lipid, protein, ash, and carbohydrate contents in fresh samples. V. amazonica petiole has a high moisture content (97.62%), while has low amounts of protein, crude fiber and carbohydrates (3.10%, 1.81%, and 5.78%, respectively). At 19.5 kcal g− 1, this NCEP can be classified as a low-calorie food, especially due to low lipid content of 1.47%. Amongst the extracts and solvent-partitioned fractions, the ethyl acetate fraction showed the highest total phenolic content (25.47 GAE mg 100 g− 1) and antioxidant potential (IC50: 13.67 µg mL− 1), which were evaluated using the Folin-Ciocalteu and DPPH methods, respectively. In comparison with well-known conventional fruits and plants, based on results obtained for the methanolic extract, the petiole showed a low total phenolic content (13.61 GAE mg 100 g− 1) and also an antioxidant potential (IC50: 50.12 µg mL− 1) that was 10-fold higher than the gallic acid reference standard. Five phenolic acids were identified by dereplication using liquid chromatography coupled to mass spectrometry (LC-DAD-ESI-Q-TOF-MS). Gallic, ferulic, p-coumaric and 3,4-dihydroxybenzoic acids, as well the flavonoid quercetin-3-O-rhamnoside, were identified in methanolic extract. As a low-carb and low-fat food, this unconventional edible plant can be incorporated into diets with dietary restrictions and can be classified as a functional food since it is a source of bioactive compounds.

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Moisture sorption characteristics and dynamic mechanical thermal analysis of dried petiole and rhizome of red water lily (Nymphaea x rubra)

Cited by 5 publications

References 47 publications

Interactions of Urea Surfaces with Water as Relative Humidity Obtained from Dynamic Vapor Sorption Experiments, In Situ Single-Particle Raman Spectroscopy, and Ab Initio Calculations

Interactions of Urea Surfaces with Water as Relative Humidity Obtained from Dynamic Vapor Sorption Experiments, In Situ Single-Particle Raman Spectroscopy, and Ab Initio Calculations

Nutritional properties, determination of phenolic compounds and antioxidant potential of Victoria amazonica (Poepp.) J.C. Sowerby petiole

Nutritional properties, determination of phenolic compounds and antioxidant potential of Victoria amazonica (Poepp.) J.C. Sowerby petiole

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