Enhancement of the hydrophilic feruloyl glycerol synthesis using A-35 as a catalyst and its function characteristics

2021 ◽  
Author(s):  
Xinying Wang ◽  
Xiaowei Chen ◽  
Shangde Sun ◽  
Rui Xu
Keyword(s):  
Ferulic Acid ◽  
Uv Radiation ◽  
High Solubility ◽  
Solubility In Water ◽  
Glycerol Synthesis ◽  
Strong Ability

Feruloyl glycerol (FG) is the hydrophilic ester of ferulic acid (FA), which has a high solubility in water and a strong ability to resist ultraviolet (UV) radiation. In this work,...

Dimethyl Hydantoin Formaldehyde: A new Water-soluble Resin for Use as a Mounting Medium

1958 ◽  
Vol s3-99 (48) ◽  
pp. 451-452
Author(s):  
H. F. STEEDMAN
Keyword(s):  
Water Soluble ◽  
Formaldehyde Resin ◽  
High Solubility ◽  
Solubility In Water ◽  
Low Viscosity ◽  
Excellent Adhesion

Dimethyl hydantoin formaldehyde resin dissolved in water or in 70 ml ethyl slcohol+30 ml wster is put forward as a solution suitsble for the mounting of insects, smsll crustacea, &c. Its chief advantage over other water-soluble resins is its high solubility in water, its excellent adhesion to glass, its low viscosity even in high per-centage solutions, snd its hsrdness on drying.

scholarly journals Transglutaminase Effect on the Gelatin-Films Properties

2021 ◽  
Author(s):  
Elizete Baggio ◽  
Bianca Santinon Scopel ◽  
Marieli Rosseto ◽  
Aline Dettmer ◽  
Camila Baldasso
Keyword(s):  
Mechanical Properties ◽  
The Other ◽  
Biodegradable Materials ◽  
High Solubility ◽  
Solubility In Water ◽  
Gelatin Films ◽  
Infrared Spectrometer ◽  
Useful Life ◽  
Degradation Test ◽  
The Impact

Abstract BACKGROUND: The development of biodegradable materials, especially those from renewable sources, is important to reduce the impact of plastic waste on the environment. On the other hand, protein-based films have high solubility in water, in addition to limited mechanical properties, which makes their application in high humidity environments a challenge. The enzyme transglutaminase (TGase) can reduce the interaction of gelatin films with water, improving these properties, while improving the mechanical properties. Therefore, this study aimed to determine the best condition for using the TGase enzyme, through variations in the gelatin and enzyme mass, in addition to the time that the enzyme acts on the gelatin, evaluating the properties tensile strength, elongation, and solubility in water. In a second set of experiments gelatin amount was kept fixed at 4%, and other proportions of an enzyme (1% and 5% w/w gelatin) were studied, evaluating beyond these properties the degradation in simulated soil through thermogravimetry analysis and Fourrier Transform Infrared Spectrometer (FTIR).RESULTS: It was concluded that the higher concentration of TGase (5%) promoted a greater reduction in the solubility of the films, making the films more resistant to biodegradation, facilitating their application due to the increase in their useful life.CONCLUSION: At the end of the degradation test, it was noticed that the films were degraded, presenting the potential for substitution of polymers of fossil origin, which could be an alternative to the problem of polymeric residues in the environment.

scholarly journals Occurrence, Distribution, and Ecological Risk Assessment of Antibiotics in Selected Urban Lakes of Hanoi, Vietnam

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Hong Anh Duong ◽  
Thi Vi Phung ◽  
Thuy Ngoc Nguyen ◽  
Lan-Anh Phan Thi ◽  
Hung Viet Pham
Keyword(s):  
Risk Assessment ◽  
Surface Water ◽  
Ecological Risk ◽  
Ecological Risk Assessment ◽  
Ultra Performance Liquid Chromatography ◽  
Tandem Mass ◽  
High Solubility ◽  
Solubility In Water ◽  
Antibiotic Group ◽  
And Behavior

Residue concentrations of fifteen antibiotics including sulfonamides, quinolones, macrolides, β-lactams, and trimethoprim in lakes from Hanoi metropolitan area, Vietnam, were analyzed using ultra-performance liquid chromatography coupled with tandem mass spectrometry (UPLC/MS-MS) to elucidate their occurrence and behavior in urban environment. For surface water, the average concentrations of five antibiotic classes decreased in the order: sulfonamides (117.9 ng/L) > β-lactams (31.28 ng/L) > quinolones (20.19 ng/L) > macrolides (17.74 ng/L) > trimethoprim (8.93 ng/L). While the highest concentration of SMX was detected at 806.5 ng/L in surface water, those obtained in sediment were only at 1.35 ng/g because of their high solubility in water. Quinolones were found at a maximal concentration of 158.7 ng/L for OFL in water phase whereas those in sediment phase were 4,017 ng/g due to their great affinity in sediment. These findings revealed the different fate and release mechanisms of each antibiotic group in the environment. The ecological risk assessment implied some targeted compounds, and in particular, OFL and AZM could pose high risks to algae in the aquatic ecosystem.

Probing the potential of ureasil-poly(ethylene oxide) as a glyphosate scavenger in aqueous milieu: force-field parameterization and MD simulations

2021 ◽  
Author(s):  
Alechania Misturini ◽  
Germano Heinzelmann ◽  
Renato L. T. Parreira ◽  
Eduardo F. Molina ◽  
Giovanni F. Caramori
Keyword(s):  
Ethylene Oxide ◽  
Force Field ◽  
Md Simulations ◽  
High Solubility ◽  
Conventional Agriculture ◽  
Solubility In Water ◽  
Force Field Parameterization ◽  
Intensive Use ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

The intensive use of glyphosate in conventional agriculture and its high solubility in water have led to contamination of aqueous systems worldwide.

Comparative study of four rice cultivars with different levels of cadmium tolerance

Biologia ◽  
2013 ◽  
Vol 68 (1) ◽  
Author(s):  
Xiao Wang ◽  
Zhong-Wei Zhang ◽  
Shi-Hua Tu ◽  
Wen-Qiang Feng ◽  
Fei Xu ◽  
...  
Keyword(s):  
Contaminated Soils ◽  
Rice Cultivars ◽  
Cd Stress ◽  
Ros Scavenging ◽  
High Solubility ◽  
Cd Uptake ◽  
Solubility In Water ◽  
Cd Tolerance ◽  
Different Levels ◽  
Cyanide Resistant Respiration

AbstractCadmium (Cd) has been identified as a significant pollutant due to its high solubility in water and soil and high toxicity to plants and animals. Rice, as one of the most important food crops, is grown in soils with variable levels of Cd and therefore, is important to discriminate the Cd tolerance of different rice cultivars to determine their suitability for cultivation in Cd-contaminated soils. This study investigates the primary mechanisms employed by four rice cultivars in attaining Cd tolerance. HA63 cultivar reduces Cd uptake by increasing Fe absorption through activation of phytosiderophores. T3028 cultivar accumulates the highest level of Cd in leaves while also activating its reactive oxygen species (ROS) scavenging system, including antioxidant enzymes and phytochelatins. In some rice cultivars (such as HA63), a cyanide-resistant respiration mechanism, important in Cd detoxification, was also promoted under the Cd stress. In conclusion, different rice cultivars may adopt different biochemical strategies and respond with different efficiency to Cd stress.

Design, synthesis and in vivo evaluation of sodium 2-benzyl-chloromalonates as new central nervous system depressants

MedChemComm ◽  
2015 ◽  
Vol 6 (8) ◽  
pp. 1427-1437 ◽  
Author(s):  
Andreia Aguiar Vieira ◽  
Bruno Guimarães Marinho ◽  
Luana Gonçalves de Souza ◽  
Patricia Dias Fernandes ◽  
José D. Figueroa-Villar
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Acute Toxicity ◽  
Sleep Deprivation ◽  
High Solubility ◽  
In Vivo Evaluation ◽  
Design Synthesis ◽  
Solubility In Water ◽  
Low Levels

This work describes the design, synthesis and in vivo evaluation of new central nervous system depressing agents that show low levels of acute toxicity, high solubility in water, anxiolytic and hypnotic effects without sleep deprivation.

scholarly journals Investigation of hydration and distribution of trifluoroacetophenone and its derivatives in hexane – aqua system

2019 ◽  
pp. 51-58
Author(s):  
Yulya V. Matveichuk
Keyword(s):  
Benzoic Acid ◽  
Distribution Coefficient ◽  
Water Distribution ◽  
Water System ◽  
Ion Selective Electrodes ◽  
Chromatographic Study ◽  
High Solubility ◽  
Solubility In Water ◽  
Polyvinyl Chloride Membrane ◽  
Crystalline Hydrates

UV spectrophotometric and chromatographic study of the distribution and hydration of trifluoroacetophenone (TFAF) and some its derivatives (  p-trifluoroacetyl benzoic acid heptyl ester (TFABAHE), p-methyltrifluoroacetophenone (  p-MTFAF), 2,4-dimethyltrifluoroacetophenone (DMTFAF), 2,4,6-trimethyltrifluoroacetophenone (TMTFAF)) in the hexane-water system, which models the polyvinyl chloride membrane of ion-selective electrodes was investigated. TFAF has a high solubility in water (distribution coefficient D is equal to 415) as compared with p-MTFAF, DMTFAF, TMTFAF and TFABAHE (D within 1360 –2700). Hydration occurs most strongly to TFABAHE and is especially strong in alkaline medium. It is established that p-MTFAF and TFABAHE form a crystalline hydrates.

Lipid and lipoprotein disorders

2010 ◽  
pp. 1652-1672
Author(s):  
P.N. Durrington
Keyword(s):  
Organic Solvents ◽  
Heterogeneous Group ◽  
Structural Components ◽  
High Solubility ◽  
Internal Organs ◽  
Solubility In Water ◽  
Energy Stores ◽  
Heat Conservation ◽  
Nonpolar Organic ◽  
Low Solubility

Lipids are a heterogeneous group of substances that are distinguished by their low solubility in water and their high solubility in nonpolar (organic) solvents. They are essential as energy stores and respiratory substrates, as structural components of cells, as vitamins, as hormones, for the protection of internal organs, for heat conservation, for digestion, and for lactation....

The aqueous chemistry of uranium minerals. 4. Schröckingerite, grimselite, and related alkali uranyl carbonates

1983 ◽  
Vol 47 (342) ◽  
pp. 69-73 ◽  
Author(s):  
Timothy J. O'Brien ◽  
Peter A. Williams
Keyword(s):  
High Solubility ◽  
Synthetic Compound ◽  
Solubility In Water ◽  
Alkali Metal Carbonates ◽  
Metal Carbonates ◽  
Solution Studies ◽  
Close Relationship ◽  
Uranium Minerals ◽  
Relationship Of ◽  
Related Compounds

AbstractUsing solution techniques, ΔG°f(298.2k) has been calculated for schröckingerite, NaCa3UO2(CO3)3 SO4F · 10H2O, and grimselite, NaK3UO2(CO3)3 · H2O. The values are −8077.3 ±8.7 and −4051.3 ±1.8 kJ mol−1 respectively. ΔH°f(298.2k) for grimselite is −4359.0 ± 1.8 kJ mol−1. An estimate for ΔG°f of the synthetic compound Na4UO2(CO3)3(s) using previously published equilibria has been made, −3720.0±9.7 kJ mol−1. The results have been used to reconstruct the chemical environments in which these and related compounds can form. Grimselite is only stable at relatively high activities of K(aq)+ and the alkali metal carbonates containing only potassium or sodium ions have not been reported to occur naturally. This is most probably due to their relatively high solubility in water. Schröckingerite can form from solutions which are more than saturated with respect to calcite and fluorite. The close relationship of schröckingerite with gypsum, observed frequently in the field, is evident from synthetic and solution studies.

scholarly journals Production and Physical and Physicochemical Characterization Powder in Natura and Freeze-Dried of Moringa Seeds

2019 ◽  
Vol 11 (9) ◽  
pp. 11
Author(s):  
Semirames do N. Silva ◽  
Francisco de Assis C. Almeida ◽  
Josivanda P. Gomes ◽  
Antônio Jackson R. Barroso ◽  
Polyana B. Silva ◽  
...  
Keyword(s):  
Moisture Content ◽  
Water Activity ◽  
Low Temperatures ◽  
Freeze Drying ◽  
Physicochemical Characterization ◽  
High Solubility ◽  
Solubility In Water ◽  
Compressibility Index ◽  
Freeze Dried ◽  
Freeze Dryer

To apply low temperatures, different of other processes, maintain the structure of products and better preserve the thermosensitive components, the freeze-drying has called attention of various researchers. Aimed with the research to produce and characterize the powder in natura obtained by seeds of moringa, elaborate different pastes with addiction of 20, 30, 40 and 50 mL of distilled water, freeze-dry it, characterize it physical and physicochemical and select the best powder. The freeze-drying was produced through a benchtop freeze dryer. After drying it, from the powder were determined the real density, bulk density, compacted density, porosity, compressibility index, Hausner factor, hygroscopicity, solubility, color, moisture content and water activity, ashes, total acidity, pH, proteins, lipids and carbohydrates. The in natura powder was classified as non-hygroscopic, high solubility in water, low moisture content and water activity, high protein, lipids, carbohydrates and low acidity. Freeze-drying was presented as an appropriate method for the preservation of moringa constituents, with a formula selected with the addition of 50 mL of water.

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