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  • Abstract
  • Abstract--A quantitative method based on the product of the reaction between the antiemetic metoclopramide and sodium nitrite in acidic medium by visible spectrophotometry is proposed. (issuu.com)
  • Enzyme
  • Spectrophotometry is often used in measurements of enzyme activities, determinations of protein concentrations, determinations of enzymatic kinetic constants, and measurements of ligand binding reactions. (wikipedia.org)
  • Among those experimental approaches to monitor enzyme activity, the use of fluorochromic compounds is one of the most practical methods [ 17 , 18 , 19 , 20 , 21 ]. (mdpi.com)
  • The present invention provides a group of tobacco alkaloids, tobacco extract, Yerbamat extract, and an extract of chewing gum and lozenges which are modulators of monoamine oxidase (MAO) activity (i.e., compounds and substances which inhibit MAO enzyme and prevent its biological activity). (google.com)
  • The present invention relates to the novel use of compounds and substances which are capable of modulating monoamine oxidase (MAO) activity by inhibiting the MAO enzyme. (google.com)
  • The invention concerns a method for the detection of an analyte in a sample liquid by an enzyme-immunoassay in which an enzyme-labelled compound is partitioned between a solid and a liquid phase and the amount of enzyme label in the liquid phase outside the solid phase is determined as a measure of the. (google.co.uk)
  • 2. The method of claim 1 wherein the contacting step (c) comprises directly contacting the liquid sample with the enzyme-labelled immunologically active compound specifically bound to the specific binding partner on the porous solid phase to form the first liquid phase thereon. (google.co.uk)
  • 7. The method of claim 1 wherein the enzyme-labelled immunologically active compound of step (b) is provided as a separate liquid reagent. (google.co.uk)
  • 11. The method of claim 1 wherein the contacting step (c) comprises first contacting the liquid sample with the enzyme-labelled immunologically active compound provided as a separate liquid reagent to form a first liquid phase, and contacting the first liquid phase with the porous solid phase. (google.co.uk)
  • The reaction is confined to organisms producing β-lactamases, but it is sufficiently sensitive to indicate the presence of this enzyme is small amounts in strains previously considered not to produce it. (asm.org)
  • 3. The enzyme immunoassay of claim 1, wherein the binding material is an antibody specific for said analyte and is immunologically immobilized within said zone by applying a solution of said antibody to said zone and applying an antiserum to said antibody to said zone, thus effecting an immunological reaction in said zone. (google.com)
  • thereof
  • 19. The imaging material of claim 5 wherein said electron accepting compound is selected from the group consisting of clay minerals, organic acids, acid polymers, metal salts of aromatic carboxylic acids, oil soluble metal salts of phenol-formaldehyde novalak resins, zinc carbonate and combinations thereof. (google.com)
  • 8. The compound of claim 1, which is selected from the group consisting of: 2S)-1-(3-aminopropyl)-2-mercaptocyclopentanecarboxylic acid, (1R,2S)-2-acetylthio-1-(3-aminopropyl)-cyclopentanecarboxylic acid, an optical isomer thereof, and apharmaceutically acceptable acid addition salt thereof. (patentgenius.com)
  • enzymes
  • Moreover, biofuel production from trans-esterification of natural oils and production of enantiomeric compounds using enzymes are applications with great industrial and pharmaceutical interest [ 6 , 7 , 8 , 9 , 10 , 11 ]. (mdpi.com)
  • Fluorochromic compounds have established new tools and opened important frontiers in fluorescence spectroscopy and microscopy of enzymes [ 22 , 23 , 24 ]. (mdpi.com)
  • Potential applications of oxidative enzymes and phenoloxidase-like compounds in wastewater and soil treatment: a review. (springer.com)
  • The essential role of the Se is due to its presence in the active site of some enzymes (i.e., glutathione peroxidase and iodotironine-5-deiodinase) and the catalytic effect of selenium compounds on the reaction of intermediate metabolism and inhibition of the toxic effect of heavy metals. (hindawi.com)
  • acidic
  • It more particularly relates to such record material in the form of sheets coated with color-forming systems comprising chromogenic material, and acidic color developer. (google.com)
  • confer
  • The main difficulty is that solutions of nitrite are unstable and have to be stored in the refrigerator and frequently replaced, and it is necessary to attach the diazo compound to molecules that confer stability. (issuu.com)
  • therapeutic
  • Nowadays plant derived natural compounds have gained huge amount of research attention especially in food and medicine industries due to their multitude of biological and therapeutic properties as alternative medicines. (biomedcentral.com)
  • Although biological and therapeutic potential of M. glyptostroboides derived compounds has been reported previously [ 6 - 8 ], no report is available on α-glucosidase and tyrosinase inhibitory effects of taxoquinone, a diterpenoid from M. glyptostroboides . (biomedcentral.com)
  • Probe
  • Before reaction with singlet oxygen, this probe initially exhibits weak blue fluorescence with excitation peaks at 372 and 393 nm and emission peaks at 395 and 416 nm. (thermofisher.com)
  • composition
  • An imaging system in which images are formed by image-wise exposing a layer containing a chromogenic material and a photosensitive composition in which at least the photosensitive composition is encapsulated in a layer of pressure rupturable capsules. (google.com)
  • lipase
  • The study of lipase catalyzed reactions of hydrolysis or formation of ester is an important issue in organic biosynthesis [ 1 , 2 , 3 , 4 , 5 ]. (mdpi.com)
  • The sensitivity of the assay was achieved by adding a lipase of high lipolytic activity and sensitivity to lipstatin to the reaction mixture. (springer.com)
  • Synthesis
  • The use of automatic synthesizer should minimize the variance in the chemical reaction when compared with manual synthesis. (hindawi.com)
  • For example, the reaction conditions for [ 18 F]FES synthesis in the GE TRACERlab MX FDG system [ 9 ] may not be identical to those needed when other automated synthesizers are used for the same synthesis. (hindawi.com)
  • chromophore
  • These compounds consist of at least a conjugated chromophore azo (-N=N-) group and two or more aromatic ring groups, which are important classes of organic colorants under different names such as diazotizated calixarene derivatives, "azocalixarenes" [ 10 ]. (hindawi.com)
  • molecular
  • Calixarenes are ideal frameworks for the development of chromogenic ionophores in the molecular recognition of ionic species of chemical and biological interests since the incorporation of a suitable sensory group into the calixarene results in a tailored chromogenic receptor [ 5 ]. (hindawi.com)
  • In accordance with the invention, binding compounds derivatized with releasable molecular tags specifically bind to selected membrane-associated. (google.com)
  • In accordance with the invention, binding compounds derivatized with releasable molecular tags specifically bind to selected membrane-associated analytes, after which the molecular tags are released upon activation of cleavage moieties, or sensitizers, anchored in the same membrane as the membrane-associated analytes. (google.com)
  • diseases
  • Evidence is accumulating that most of the degenerative diseases have their origin in deleterious free radical reactions. (hindawi.com)
  • approaches
  • Depending on the type of synthesizer used, reaction conditions and approaches need to be changed to maintain the uniform quality (USP grade) of the product [ 8 - 11 ]. (hindawi.com)
  • least
  • A reaction medium for the culture and/or detection and/or identification of bacteria of the Legionella genus includes at least one siliceous compound, where the siliceous compound is a nonpolar silica. (patentgenius.com)
  • A method for detecting and/or identifying bacteria of the Legionella genus, includes bringing a sample that may contain bacteria of the Legionella genus into contact with a reaction medium comprising at least one siliceous compound, incubating, and detecting the presence of bacteria of the Legionella genus. (patentgenius.com)
  • Color
  • The compound has an unusual ultraviolet spectrum, and the color change can be followed quantitatively by measuring changes in absorption which occur in the 380- to 500-nm region, where cephalosporins normally have no absorption. (asm.org)
  • According to one embodiment, there are provided a developing section storing a color erasable developing agent that includes capsule colorant particles with a core in which a color developable compound, a color developing agent, and a color erasing agent are contained, and a developing section storing a binder resin-containing transparent developing agent. (patentsencyclopedia.com)
  • chemical
  • A certain chemical reaction within a solution may occur in a forward and reverse direction, where reactants form products and products break down into reactants. (wikipedia.org)
  • At some point, this chemical reaction will reach a point of balance called an equilibrium point. (wikipedia.org)
  • These examples show that the symbionts cross-talk via chemical mediators which are released into the rhizosphere, and these compounds can be effective prior to the physical contact of the symbionts. (biomedcentral.com)
  • Potential
  • In this study, a diterpenoid compound taxoquinone, isolated from Metasequoia glyptostroboides was evaluated for its α-glucosidase and tyrosinase inhibitory efficacy in terms of its potent anti-diabetic and depigmentation potential, respectively. (biomedcentral.com)
  • methods
  • In addition, the present invention provides methods for the diagnostic monitoring of patients undergoing clinical evaluation for the treatment of a hemostatic or vascular disorders, and for monitoring the efficacy of compounds in clinical trials. (google.com)
  • product
  • The sensitivity of bioanalytical assays depends mainly on the capacity of an observer to detect the product(s) of a biocatalytic reaction. (rsc.org)
  • Calixarenes are a product formed from the condensation reaction of p -substituted phenols with formaldehyde [ 1 ]. (hindawi.com)
  • levels
  • Samples were analyzed for levels of bacterial endotoxin via chromogenic limulus amebocyte lysate, crystalline silica via X-ray diffraction, and 20 metals via inductively coupled plasma/mass spectrometry. (cdc.gov)
  • water
  • However, experiments developed in tap water resulted in a lower PCP elimination, but this inconvenience can be partly overcome by leaving the tap water overnight in an open vessel before reaction. (springer.com)