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Color reaction

About: Color reaction is a research topic. Over the lifetime, 1194 publications have been published within this topic receiving 19579 citations.


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Patent
12 May 1979
TL;DR: In this article, a wide variety of antibacterial preparations are described, such as Micromonospora sagamiencis SU-2 (FERM-P No.4230) and its nontoxic acid adduct salts.
Abstract: NEW MATERIAL:Antibiotic SU-2 and its nontoxic acid adduct salts. Characteristics thereof are as follows: basic white powder; elemental analysis: C48.38%, H8.72%, N11.83%; molecular weight: 450; molecular formula: C19H38N4O8; m.p.: 102- 112 deg.C; UV absorption spectrum does not show characteristic absorption peaks and only shows terminal absorptions in the region of 280-360nm; easily soluble in water, soluble in methanol, etc. and insoluble in chloroform, etc,; color reaction: positive to ninhydrin reaction, etc. and negative to Elson-Morgan reaction, etc. USE:A wide variety of antibacterial preparations. Effective also against bacteria of Proteus genus and Pseudomonas genus, and used in medicines and cleaning agents. PROCESS:Micromonospora sagamiencis SU-2 (FERM-P No.4230) is cultured, and the desired substance is collected from a culture product by an adsorption-desorption method with a cation-exchange resin, etc.
Journal ArticleDOI
TL;DR: In this article , two spectroscopic methods have been proposed for the determination of hydrazine in water samples based on the principle of oxidation and reduction, which are easy, fast, inexpensive and with very good stability.
Abstract: Hydrazine is one of the important compounds in our daily life because the fields of use of hydrazine in industry are very diverse. It is also used as a fuel for satellite-carrying rockets and the importance of this chemical compound. Two spectroscopic methods have been proposed for the determination of hydrazine. Both methods are based on the principle of oxidation and reduction. Both methods are indirect spectroscopic methods characterized by being Easy, fast, inexpensive and with very good stability, the first method was based on the oxidation reduction reaction using cerium(IV) ions in an acidic medium, then reacting the remaining amount of cerium(IV) ions with bromopyrogalol red reagent to form a red complex measured at 498 nm. This method followed Beer's law in a concentration range of 0.4-36 µg.mL−1, the molar absorbance was 2.31×104 L.mol−1.cm−1, and the sensitivity of Sandall's was 0.0056 µg−2.cm−1. The second method also based on oxidation reduction reaction between hydrazine and chromate ions in acidic medium in the first step, followed by the second step which including the reaction of remaining amount of chromate ions with promethazine to form a reddish-pink complex measured at 515 nm. The second method obeys Beer's law from 0.8-40 µg.mL−1, with the molar absorptivity equaled to 2.31×104 L.mol−1. cm−1, and Sandall's was 0.0048 µg−2.cm−1. These methods have been successfully applied for determination of hydrazine in various water samples.
Patent
30 May 2007
TL;DR: In this paper, a low-density biochip with tetra methyl benzidine (TMB) as a color active marker was used to detect a color reaction of a biomolecule.
Abstract: The measuring device has a detection reaction guide unit (1) with one or multiple containers (2), a measuring unit (6), a test cassette (9) with a low density biochip (14) and solution of tetra methyl benzidine as a color active marker. The low density biochip is selected form mycotoxins, eicosanoid, lungs marker and anti immunoglobulin E-immunoglobulin E (anti-IgE-IgE) .The loading and rinsing of the test cassette with reaction and auxiliary solutions is realized by reaction guidance and by evaluation of the color reaction control-processor. Independent claims are also included for the following: (1) a test cassette (2) a method for the production and evaluation of photo-metric, pixel-oriented detected measurement results of a color reaction of a biomolecule to be detected on low density biochip in file formats.
Patent
04 Sep 2019
TL;DR: In this paper, an arsenic detection reagent and a detection kit containing nitro-tyrosine, and a method for detecting arsenic using the same was presented. But, the method was based on measuring the color development, which was very simple compared to an existing arsenic detection method.
Abstract: The present invention relates to an arsenic detection reagent and a detection kit containing nitro-tyrosine, and a method for detecting arsenic using the same. Nitro-tyrosine does not exhibit a color reaction when mixed with other metals, but only exhibits the color reaction by conducting a reaction with arsenic. Therefore, nitro-tyrosine can be used to detect arsenic, which is a poisonous substance present in water quality, food products, and the like. In addition, the method for detecting arsenic according to the present invention can determine the presence of arsenic simply by measuring the color development, thereby being very simple compared to an existing arsenic detection method.

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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20227
20214
20206
20198
20186
20175