Diuretics and masking agents

2021 ◽  
pp. 216-225
Author(s):  
David Mottram
Keyword(s):  
Masking Agents

Syntheses and evaluation of new hydrophilic azacryptands used as masking agents of technetium in solvent extraction processes

2021 ◽  
Vol 50 (5) ◽  
pp. 1620-1630
Author(s):  
Alexiane Thevenet ◽  
Ana Miljkovic ◽  
Sonia La Cognata ◽  
Cécile Marie ◽  
Christelle Tamain ◽  
...  
Keyword(s):  
Nitric Acid ◽  
Solvent Extraction ◽  
Acid Medium ◽  
Separation Process ◽  
Nitric Acid Medium ◽  
Masking Agents ◽  
Extraction Processes

New azacryptands with the addition of hydrophilic groups were synthesized to bind selectively the pertechnetate anion in nitric acid medium, and avoid its extraction in the separation process.

Trp-Trp acts as a multi-functional blocker for human bitter taste receptors, hTAS2R14, hTAS2R16, hTAS2R43, and hTAS2R46

2021 ◽  
Author(s):  
Ichie Ojiro ◽  
Hiromi Nishio ◽  
Toyomi Yamazaki-Ito ◽  
Shogo Nakano ◽  
Sohei Ito ◽  
...  
Keyword(s):  
Functional Food ◽  
Functional Foods ◽  
Bitter Taste ◽  
Functional Characteristic ◽  
Taste Receptors ◽  
Food Ingredients ◽  
Masking Agents ◽  
Bitter Taste Receptors ◽  
Bitterness Masking

Abstract Many functional food ingredients activate human bitter taste receptors (hTAS2Rs). In this study, A novel inhibitor, Trp-Trp, for hTAS2R14 was identified by searching for the agonist peptide's analogs. Trp-Trp also inhibited hTAS2R16, hTAS2R43, and hTAS2R46, which share the same agonists with hTAS2R14. The multi-functional characteristic of Trp-Trp is advantageous for use as bitterness-masking agents in functional foods.

scholarly journals Liquid–liquid extraction of gallium(III) with n-octylaniline from succinate media

2005 ◽  
Vol 70 (6) ◽  
pp. 853-867 ◽  
Author(s):  
T.N. Shilmkar ◽  
S.S. Kolekar ◽  
M.A. Anuse
Keyword(s):  
Extraction Process ◽  
Liquid Extraction ◽  
Tolerance Limit ◽  
Variation Method ◽  
Hydrogen Ions ◽  
Binary Separation ◽  
Liquid Liquid Extraction ◽  
Masking Agents ◽  
Increasing Temperature ◽  
Extraction Equilibria

The distribution equilibrium of gallium(III) between n-octylaniline dissolved in toluene and acidic aqueous succinate media has been investigated as a function of the concentration of extractant in the organic phase and concentration of hydrogen ions and gallium( III) ions in the aqueous phase. The stoichiometry of the extracted species was determined on the basis of slope analysis.Gallium(III) is extracted by the anion exchange mechanism as [RNH3+Ga(succinate)2]org. The temperature dependence of the extraction equilibria was examined by the temperature variation method. The extraction process is favoured with increasing temperature. It was found that a large number of cations and anions have a high tolerance limit. The selectivity of the extraction is increased by the use of suitable masking agents. The method affords the binary separation of gallium(III) from associated elements and was further extended to the analysis of a synthetic mixture.

scholarly journals Electro Spun- Nanofibrous Mats: A Modern Wound Dressing Matrix with a Potential of Drug Delivery and Therapeutics

2015 ◽  
Vol 10 (4) ◽  
pp. 155892501501000 ◽  
Author(s):  
Seham Abdelhady ◽  
Khaled M. Honsy ◽  
Mallesh Kurakula
Keyword(s):  
Healing Process ◽  
High Surface ◽  
High Surface Area ◽  
Electrospun Nanofibers ◽  
Cost Effective ◽  
External Agent ◽  
Masking Agents ◽  
Ordinary Time ◽  
Treatment Of Wounds ◽  
Chemical Materials

Nanofibers have emerged as advanced fibers with broad use and potential in biomedical fields in recent decades. The process of healing is an innate immune response towards a pathophysiology such as wound. Ordinary time taken for wound healing is approximately 2–3 days depending upon the chronic state. Air moisture and microbes risk pathological manifestations leading to delayed or incomplete palliate process. An external agent that can provide balanced moisture, increasing cell proliferation with microbial infiltration or anti- bacterial activity, aids to speed the healing process. Apart from these qualities, an ideal material should be simple, cost effective, and repeatable. Nanofibers produced through electrospinning have become a promising strategy in the treatment of wounds. Apart from being simple in application, they are produced from natural or synthetic polymers. Nanofibers exhibit high surface area, nanoporosity, with a potential to load potent drugs or enzymes. Other biomedical applications include use of nanofibers as tissue scaffolds and as masking agents in modern cosmetics. Therefore nanofibers are excellent candidates for wound treatment and management. The current review is an attempt to discuss and present literature about different techniques, chemical materials, and entities used to produce efficient electrospun nanofibers for use in pathological, medicinal, or treatment or management of injury or laceration.

Potentiometric Titrations with (Ethylenedinitrilo)tetraacetate. Use of Masking Agents to Improve Selectivity

1958 ◽  
Vol 30 (8) ◽  
pp. 1347-1350 ◽  
Author(s):  
J. S. Fritz ◽  
M. J. Richard ◽  
S. K. Karraker
Keyword(s):  
Potentiometric Titrations ◽  
Masking Agents

On the spectrophotometric determination of with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol

1988 ◽  
Vol 66 (3) ◽  
pp. 401-405 ◽  
Author(s):  
Lumír Sommer ◽  
Eva Šamlotová
Keyword(s):  
Spectrophotometric Determination ◽  
Natural Water ◽  
Water Samples ◽  
Sodium Sulphate ◽  
Optimum Conditions ◽  
Reaction Conditions ◽  
Masking Agents ◽  
Triton X ◽  
Sulphosalicylic Acid

2-(5-Bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP) is a suitable reagent for the spectrophotometric determination of uranium but results are easily influenced by the reaction conditions as well as various common ions and masking agents. Optimum conditions, which must be carefully maintained, are 30% (v/v) dimethylformamide, 0.1% triton X-100, ≥ 8 × 10−5 M 5-Br-PADAP, 8 × 10−2 M triethanolamine, 7 × 10−3 M sodium fluoride, 10−2 M 5-sulphosalicylic acid, and 579 nm. Sodium sulphate (10−2 M) and CDTA (5.7 × 10−3 M) may serve as additional masking agents. A previous separation of uranium by extraction with 0.1 M tri-n-octylamine in benzene from 4 M HCl and re-extraction of 0.3 M HCl is recommended for analysis of natural water samples.

Masking Agents for pCl Measurements

1961 ◽  
Vol 33 (12) ◽  
pp. 1792-1792
Author(s):  
M. O. Fulda
Keyword(s):  
Masking Agents

scholarly journals Mechanism of olfactory masking in the sensory cilia

2009 ◽  
Vol 133 (6) ◽  
pp. 583-601 ◽  
Author(s):  
Hiroko Takeuchi ◽  
Hirohiko Ishida ◽  
Satoshi Hikichi ◽  
Takashi Kurahashi
Keyword(s):  
Signal Transmission ◽  
Ca Channel ◽  
Ca Channels ◽  
Caged Compounds ◽  
Whole Cell Patch Clamp ◽  
Cng Channel ◽  
Sensory Cilia ◽  
Ultraviolet Photolysis ◽  
Masking Agents ◽  
Nonlinear Signal

Olfactory masking has been used to erase the unpleasant sensation in human cultures for a long period of history. Here, we show a positive correlation between the human masking and the odorant suppression of the transduction current through the cyclic nucleotide–gated (CNG) and Ca2+-activated Cl− (Cl(Ca)) channels. Channels in the olfactory cilia were activated with the cytoplasmic photolysis of caged compounds, and their sensitiveness to odorant suppression was measured with the whole cell patch clamp. When 16 different types of chemicals were applied to cells, cyclic AMP (cAMP)-induced responses (a mixture of CNG and Cl(Ca) currents) were suppressed widely with these substances, but with different sensitivities. Using the same chemicals, in parallel, we measured human olfactory masking with 6-rate scoring tests and saw a correlation coefficient of 0.81 with the channel block. Ringer's solution that was just preexposed to the odorant-containing air affected the cAMP-induced current of the single cell, suggesting that odorant suppression occurs after the evaporation and air/water partition of the odorant chemicals at the olfactory mucus. To investigate the contribution of Cl(Ca), the current was exclusively activated by using the ultraviolet photolysis of caged Ca, DM-nitrophen. With chemical stimuli, it was confirmed that Cl(Ca) channels were less sensitive to the odorant suppression. It is interpreted, however, that in the natural odorant response the Cl(Ca) is affected by the reduction of Ca2+ influx through the CNG channels as a secondary effect. Because the signal transmission between CNG and Cl(Ca) channels includes nonlinear signal-boosting process, CNG channel blockage leads to an amplified reduction in the net current. In addition, we mapped the distribution of the Cl(Ca) channel in living olfactory single cilium using a submicron local [Ca2+]i elevation with the laser photolysis. Cl(Ca) channels are expressed broadly along the cilia. We conclude that odorants regulate CNG level to express masking, and Cl(Ca) in the cilia carries out the signal amplification and reduction evenly spanning the entire cilia. The present findings may serve possible molecular architectures to design effective masking agents, targeting olfactory manipulation at the nano-scale ciliary membrane.

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