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Journal articles on the topic 'Dinitrosalicylic acid'

Author: Grafiati

Published: 5 June 2025

Last updated: 15 July 2025

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1

Senthil Kumar, V. S., Srinivasan S. Kuduva, and Gautam R. Desiraju. "Pseudopolymorphs of 3,5-dinitrosalicylic acid." Journal of the Chemical Society, Perkin Transactions 2, no. 6 (1999): 1069–74. http://dx.doi.org/10.1039/a902134e.

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2

Senthil Kumar, V. S., Srinivasan S. Kuduva, and Gautam R. Desiraju. "3,5-Dinitrosalicylic acid-phenazine (1/1)." Acta Crystallographica Section E Structure Reports Online 58, no. 8 (2002): o865—o866. http://dx.doi.org/10.1107/s1600536802012473.

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3

Xu, Hui, Yanjun Tian, Kunfu Zhu, et al. "A New Quantitative Determination Method of Acetoin." International Journal of Current Microbiology and Applied Sciences 11, no. 3 (2022): 80–85. http://dx.doi.org/10.20546/ijcmas.2022.1103.010.

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To obtain a new quantitative determination method of Acetoin for reducing the cost of testing and the workload in the process of strain breeding. In an alkaline environment, using 3,5-dinitrosalicylic acid with strong oxidizing properties to azeotrope with Acetoin, 3,5-dinitrosalicylic acid is reduced to 3-amino-5-nitrosalicylic acid and 3-amino-5-nitrosalicylic acid are red-brown substances. The content of Acetoin can be obtained by detecting the absorbance at 540 nm. This new quantitative determination method of Acetoin is a simple, rapid and low-cost method for quantitative determination of

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4

Wang, Guangyi, Themis J. Michailides, and Richard M. Bostock. "Improved Detection of Polygalacturonase Activity due to Mucor piriformis with a Modified Dinitrosalicylic Acid Reagent." Phytopathology® 87, no. 2 (1997): 161–63. http://dx.doi.org/10.1094/phyto.1997.87.2.161.

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An assay for determination of galacturonic acid with 3,5-dinitrosalicylic acid was developed that substantially extends the linear range of detection compared to a previously published method with this reagent. In the improved assay, galacturonic acid was detected with a reagent containing 44 mM 3,5-dinitrosalicylic acid, 4 mM sodium sulfite, and 375 mM sodium hydroxide. The absorbance of the solution after reaction with galacturonic acid was determined at 575 nm and was linear at concentrations of galacturonic acid up to 50 μmol, with a lower limit of detection at ~400 nmol. The assay with th

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5

Essawy, A. A. I., and M. S. A. Abdel-Mottaleb. "Photosensitized degradation of dinitrosalicylic acid by uranyl ions." International Journal of Photoenergy 5, no. 4 (2003): 219–21. http://dx.doi.org/10.1155/s1110662x03000357.

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The photodegradation of dinitrosalicylic acid (DNS) by photoexcited uranyl ion was studied in aqueous solutions. The failure of DNS to degrade directly with light highlights the importance of the photoexcited uranyl ion in controlling the photochemical processes. Fluorescence quenching studies showed that an electron-transfer process from the DNS to the excited uranyl ion is involved leading to the formation ofUO2+/DNS•+radical pair complex as an initial step. Illumination of theUO22+/DNS solution in presence of oxygen results in mineralization of DNS. The results are explained on the basis of

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6

Madaj, Rafał, Halina Kalinowska, Witold Sroczyński, Jakub Szeląg, and Elżbieta Sobiecka. "Biodegradation of 3,5-dinitrosalicylic acid by Phanerochaete chrysosporium." Folia Biologica et Oecologica 14 (December 30, 2018): 14–22. http://dx.doi.org/10.1515/fobio-2017-0005.

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Despite intensive efforts put on prevention of environment pollution by nitroaromatic compounds, these xenobiotics have not been eliminated from the biosphere. The physicochemical properties make nitroaromatics extremely recalcitrant to biodegradation. Therefore, microbial degraders of these pollutants are sought after. This paper reports preliminary results of the study on degradation of 3,5-dinitrosalicylic acid (DNS) by a basidiomycetous fungus Phanerochaete chrysosporium under stationary conditions in a culture medium containing 0.05–0.5% v/v of DNS. The results obtained suggest that the f

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7

Gonçalves, Cristiana, Rosa Maria Rodriguez-Jasso, Nelma Gomes, José A. Teixeira, and Isabel Belo. "Adaptation of dinitrosalicylic acid method to microtiter plates." Analytical Methods 2, no. 12 (2010): 2046. http://dx.doi.org/10.1039/c0ay00525h.

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8

Smith, Graham, Urs D. Wermuth, Peter C. Healy, and Jonathan M. White. "Structure-Making with 3,5-Dinitrosalicylic Acid. II. The Proton-Transfer Compounds of 3,5-Dinitrosalicylic Acid with the Monocyclic Heteroaromatic Amines." Australian Journal of Chemistry 56, no. 7 (2003): 707. http://dx.doi.org/10.1071/ch02163.

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The crystal structures of the proton-transfer compounds of 3,5-dinitrosalicylic acid (dnsa) with a series of common monocyclic heteroaromatic amines (pyridine, 4-cyanopyridine, pyridine-4-carboxylic acid, 2,6-diaminopyridine, and 2-aminopyrimidine) have been determined and the hydrogen-bonding associations in each analyzed. The compounds are the adduct [(C5H6N)+(dnsa)–· (dnsa)] (1), the 1 : 1 salts [(C6H5N2)+(dnsa)–] (2), [(C6H6NO2)+(dnsa)–] (3), [(C5H8N3)+(dnsa)–] (4), and the 2 : 2 ethanol hemi-solvate [2(C4H6N3)+·2(dnsa)–· 0.5(EtOH)] (5). With all compounds, protonation of the hetero-nitrog

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9

Madaj, Rafał, Witold Sroczyński, Michał Sójka, Tomasz P. Olejnik, and Elżbieta Sobiecka. "Batch Mode Reactor for 3,5-Dinitrosalicylic Acid Degradation by Phanerochaete chrysosporium." Processes 9, no. 1 (2021): 105. http://dx.doi.org/10.3390/pr9010105.

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A new batch mode reactor was constructed to conduct continuous biodegradation of 3,5-dinitrosalicylic acid. Various types of matrices with immobilized Phanerochaete chrysosporium were immersed in a solution containing pollutant and mineral nutrients. Three parameters were chosen to optimize the process. The nitrate and nitrite ions concentrations and HPLC analysis were used to prove the biodegradation of 3,5-dinitrosalicylic acid, and the mixed effects model using one-factor ANOVA was used for statistical calculations. The results showed the correlation between the initial pH, a medium composi

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10

Xia, Meng-lei, Lan Wang, Zhi-xia Yang, and Hong-zhang Chen. "A novel digital color analysis method for rapid glucose detection." Analytical Methods 7, no. 16 (2015): 6654–63. http://dx.doi.org/10.1039/c5ay01233c.

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11

Varghese, Hema Tresa, C. Yohannan Panicker, Daizy Philip, Joydeep Chowdhury, and Manash Ghosh. "IR, Raman and SERS spectra of 3,5-dinitrosalicylic acid." Journal of Raman Spectroscopy 38, no. 3 (2007): 323–31. http://dx.doi.org/10.1002/jrs.1647.

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12

Hernández, José A., Laura Patiño-Saldivar, Alba Ardila, Mercedes Salazar-Hernández, Alfonso Talavera, and Rosa Hernández-Soto. "3,5-Dinitrosalicylic Acid Adsorption Using Granulated and Powdered Activated Carbons." Molecules 26, no. 22 (2021): 6918. http://dx.doi.org/10.3390/molecules26226918.

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Some nitroaromatic compounds are found in wastewater from industries such as the weapons industry or the wine industry. One of these compounds is 3,5-dinitrosalicylic acid (DNS), widely used in various tests and frequently found as an emerging pollutant in wastewater and to which the required attention has not been given, even though it may cause serious diseases due to its high toxicity. This study investigated the adsorption of DNS using granulated activated carbon (GAC) and powdered activated carbon (PAC) at different temperatures. The results show that in equilibrium, the adsorption takes

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13

Janošević, Aleksandra, Gordana Ćirić-Marjanović, Budimir Marjanović, Miroslava Trchová, and Jaroslav Stejskal. "3,5-Dinitrosalicylic acid-assisted synthesis of self-assembled polyaniline nanorods." Materials Letters 64, no. 21 (2010): 2337–40. http://dx.doi.org/10.1016/j.matlet.2010.07.041.

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14

Smith, Graham, Urs D. Wermuth, Peter C. Healy, and Jonathan M. White. "3,5-Dinitrosalicylic Acid in Molecular Assembly. III. Proton-Transfer Compounds of 3,5-Dinitrosalicylic Acid with Polycyclic Aromatic and Heteroaromatic Amines, and Overall Series Structural Systematics." Australian Journal of Chemistry 60, no. 4 (2007): 264. http://dx.doi.org/10.1071/ch06276.

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The crystal structures of the 1:1 proton-transfer compounds of 3,5-dinitrosalicylic acid (dnsa) with a series of common polycyclic aromatic and heteroaromatic amines (quinoline, 1-naphthylamine, 1,2,3,4-tetrahydroquinoline, quinaldic acid, benzimidazole, 1,10-phenanthroline, and 2,2′-bipyridine) have been determined and the hydrogen-bonding associations in each analyzed. The compounds are [(C9H8N)+(dnsa)–] 1, [(C10H10N)+(dnsa)–] 2, [(C9H12N)+(dnsa)–] 3, [(C10H8NO2)+(dnsa)–] 4, [(C7H7N2)+(dnsa)–] 5, [(C12H9N2)+(dnsa)–] 6, and [(C10H9N2)+(dnsa)–] 7. In all compounds, protonation of either the su

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15

S., Laskar, Sinhababu A., and M. Hazra K. "A modified spray reagent for the identification of amino acids on thin layer chromatography plates." Journal of Indian Chemical Society Vol. 78, Jan 2001 (2001): 49–50. https://doi.org/10.5281/zenodo.5873037.

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Natural Products Laboratory, Department of Chemistry, University of Burdwan, Burdwan-713 104. India <em>E-mail : </em>burchdsa@caL vsnl.net.in Manuscript <em>r</em><em>eceved 3 March 2000, accepted 26 August 2000</em> A modified ninhydrin spray reagent, 3,5,-dinitrosalicylic acid-ninhydrin is capable of developing various distinguishable colours with many of the amino acids on thin layer plates. The detection limits for amino acids with this spray reagent range from 0.1 to 10 μg and (1.01 to 0.8) μg under two conditions.

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16

Smith, Graham, Katherine E. Baldry, Karl A. Byriel, and Colin H. L. Kennard. "Molecular Cocrystals of Carboxylic Acids. XXV The Utility of Urea in Structure Making with Carboxylic Acids and the Crystal Structures of a Set of Six Adducts with Aromatic Acids." Australian Journal of Chemistry 50, no. 7 (1997): 727. http://dx.doi.org/10.1071/c96199.

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Molecular adducts of urea with six aromatic carboxylic acids have been prepared and characterized by using X-ray diffraction methods and infrared spectroscopy. These compounds are with 5-nitrosalicylic acid [(C7H5NO5)2(CH4N2O)] (1), 3,5-dinitrosalicylic acid [(C7H4N2O7)(CH4N2O)] (2), 4-aminobenzoic acid [(C7H7NO2)2(CH4N2O)] (3), o-phthalic acid [(C8H6O4)(CH4N2O)] (4), pyrazine-2,3-dicarboxylic acid [(C4H4N2O4)(CH4N2O)] (5) and pyridine-2,6-dicarboxylic acid [(C7H5NO4)(CH4N2O)2] (6). In the majority of the adducts, all six potential interactive sites on the urea molecules are utilized in hydrog

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17

Compère, C., E. Fréchette, and Edward Ghali. "Effect of 3,5-Dinitrosalicylic Acid on Passivation of Copper during Electrorefining." Materials Science Forum 111-112 (January 1992): 329–44. http://dx.doi.org/10.4028/www.scientific.net/msf.111-112.329.

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18

Heda, B. D., and P. V. Khadikar. "The thermal decomposition of cu(II) complex of 3,5-dinitrosalicylic acid." Bulletin des Sociétés Chimiques Belges 89, no. 5 (2010): 331–33. http://dx.doi.org/10.1002/bscb.19800890502.

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19

Božinović, Marko, Tea Sokač, Anita Šalić, et al. "Standardization of 3,5-dinitrosalicylic acid (DNS) assay for measuring xylanase activity." Croatian journal of food science and technology 15, no. 2 (2023): 151–62. http://dx.doi.org/10.17508/cjfst.2023.15.2.03.

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The 3,5-dinitrosalicylic acid (DNS) assay has been used for many years mainly to determine the enzymatic activity of xylanase. The assay is based on the detection of reduced sugars. Although the method is widely used, several recent studies have questioned the accuracy of the method. They mainly focused on the detection of side reactions that could lead to a false positive result of the assay. In this study, the basic components of the DNS assay such as buffer preparation, substrate source and concentration, incubation time, reagent preparation, and activity calculation were re-evaluated. Pote

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20

García, Begoña, Inmaculada Domingo, Pedro L. Domingo, and José M. Leal. "Determination of limiting molar conductivities of weak organic acids in aqueous solutions." Collection of Czechoslovak Chemical Communications 56, no. 6 (1991): 1184–92. http://dx.doi.org/10.1135/cccc19911184.

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Conductance, potentiometric, and spectrophotometric measurements have been made at 25°C of aqueous solution containing sulfanilic, hippuric, mandelic, and 3,5-dinitrosalicylic acids at different concentrations. Conductance data were analyzed using the methods of Fuoss-Kraus, Kraus-Parker, and Shedlovsky for conductivity of the free ions. Using the calculated limiting conductances, activity coefficients, and degrees of dissociation, the dissociation constants of the weak acids were determined. From plots Δ vs c1/2, reliable values for Δ0 were estimated, using a computer program, and by means of

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21

Smith, Graham, Urs D. Wermuth, and Jonathan M. White. "The 1:1 proton-transfer compound of sulfanilamide with 3,5-dinitrosalicylic acid." Acta Crystallographica Section E Structure Reports Online 57, no. 11 (2001): o1036—o1038. http://dx.doi.org/10.1107/s1600536801016841.

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22

Smith, Graham, Urs D. Wermuth, and Peter C. Healy. "The 1:1 proton-transfer compound of benzylamine with 3,5-dinitrosalicylic acid." Acta Crystallographica Section E Structure Reports Online 58, no. 8 (2002): o845—o847. http://dx.doi.org/10.1107/s1600536802012163.

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23

Toma, R. B., and H. K. Leung. "Determination of reducing sugars in French fried potatoes by 3,5-dinitrosalicylic acid." Food Chemistry 23, no. 1 (1987): 29–33. http://dx.doi.org/10.1016/0308-8146(87)90024-0.

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24

Smith, G., DE Lynch, KA Byriel, and CHL Kennard. "Molecular Cocrystals of Carboxylic Acids. XX. The Crystal Structures of 3,5-Dinitrosalicylic Acid and Its Adducts With the Isomeric Monoaminobenzoic Acids." Australian Journal of Chemistry 48, no. 6 (1995): 1133. http://dx.doi.org/10.1071/ch9951133.

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The crystal structure of 3,5-dinitrosalicylic acid monohydrate (1) and its adducts with 2- aminobenzoic acid (2-aba) [( dnsa )(2-aba)] (2), 3-aminobenzoic acid (3-aba) [( dnsa )(3-aba)] (3), and 4-aminobenzoic acid (4-aba) [( dnsa )(4-aba)2] (4), have been determined and the hydrogen bonding associations in each analysed . The acid (1), which is essentially planar, forms strong hydrogen-bonding network associations involving the carboxylic, nitro and phenolic oxygens as well as the lattice water. In all adducts, protonation of the amino group of the second acid occurs, with subsequent hydrogen

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25

Pupkova, Yulia O., Vladimir V. Sharutin, Olga K. Sharutina, Anastasia S. Fominykh, and Oleg S. Eltsov. "Molecular structure and photocatalytic properties of the pentaphenylantimony–3,5-dinitrosalicylic acid reaction product." Mendeleev Communications 32, no. 3 (2022): 377–78. http://dx.doi.org/10.1016/j.mencom.2022.05.028.

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26

Tian, Laijin, Fangli Li, Xiaoliang Zheng, Yuxi Sun, Dongmei Yan, and Linglan Tu. "Synthesis, Characterization and In Vitro Cytotoxicity of Diorganotin Complexes of 3,5-Dinitrosalicylic Acid." Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry 41, no. 5 (2011): 454–58. http://dx.doi.org/10.1080/15533174.2011.568426.

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27

Sengupta, S., M. L. Jana, D. Sengupta, and A. K. Naskar. "A note on the estimation of microbial glycosidase activities by dinitrosalicylic acid reagent." Applied Microbiology and Biotechnology 53, no. 6 (2000): 732–35. http://dx.doi.org/10.1007/s002530000327.

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28

Kumar, Ashwani, Anup Pandith, and Hong-Seok Kim. "Pyrene-appended imidazolium probes as 3,5-dinitrosalicylic acid sensors in 10% aqueous media." Dyes and Pigments 122 (November 2015): 351–58. http://dx.doi.org/10.1016/j.dyepig.2015.07.008.

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29

VISHNU, KOLHE. "Study of Equilibrium Constants of Beryllium(II) Teternary Complexes at different Ionic Strengths." Journal of Indian Chemical Society Vol. 73, Nov 1996 (1996): 567–71. https://doi.org/10.5281/zenodo.5913975.

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School of Studies tn Chemistry, Jiwaji University, Gwahor-474 011 <em>Manuscript received 7 March 1991, revised </em>28 December 1994, accepted 28 March 1995 Formation constants of 1 : 1 binary Be<sup>II</sup>-L/L' and 1 : 1 : 1 ternary Be<sup>II</sup>-L-L' complexes, where L = salicylic acid (SA), monosodium salt of 5-sulphosalicylic acid (SSA) and 3,5-dinitrosalicylic acid (DNSA) and L' = 2-hydroxyacetophenone (HAP), 2,5-dihydroxyacetophenone (DHAP) and 5-chloro-2-hydroxyacetophenone (CHAP), have been determined potentiometrically in 20% (v/v) ethanolic aqueous medium a

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30

Hassan, A. Mohamed, M. El-Medani Samir, and M. Ramadan Ramadan. "Spectroscopic and X-ray crystal structure studies of 2-aminothiazole-3,5- dinitrobenzoic acid and 3,5-dinitrosalicylic acid derivatives." Journal of Indian Chemical Society Vol. 82, Sep 2005 (2005): 799–806. https://doi.org/10.5281/zenodo.5827447.

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Chemistry Department, Faculty of Science, Cairo University, El-Faiyum Branch, El-Faiyum, Egypt <em>E-mail</em> : hamohammed@yahoo.com Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt <em>Manuscript received 6 December 2004, revised 18 April 2005, accepted 21 June 2005</em> Interaction of 2-aminothiazole (AT) base with 3,5-dinitrobenzoic acid (DNB) and 3,5-dinitrosalicylic acid (DNS) gave 1 : 1 molecular species. The salts were investigated using IR, NMR and UV-Vis spectroscopic techniques. Proton transfer occurred from the acid to the hetero nitrogen atom of th

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31

Smith, Graham, Michael G. Coyne, and Jonathan M. White. "Molecular Cocrystals of Aromatic Carboxylic Acids with 1,1-Diethylurea: Synthesis and the Crystal Structures of a Series of Nitro-Substituted Analogues." Australian Journal of Chemistry 53, no. 3 (2000): 203. http://dx.doi.org/10.1071/ch99173.

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Molecular adducts of 1,1-diethylurea with the nitro-substituted aromatic carboxylic acids 2-nitrobenzoic acid, [(C7H5NO4)(C5H12N2O)] (1), 3-nitrobenzoic acid, [(C7H5NO4)(C5H12N2O)] (2), 4-nitrobenzoic acid, [(C7H5NO4)2(C5H12N2O)] (3), 3,5-dinitrobenzoic acid, [(C7H4N2O6)(C5H12N2O)] (4), 5-nitrosalicylic acid, [(C7H5NO5)(C5H12N2O)] (5) and 3,5-dinitrosalicylic acid, [(C7H4N2O7)(C5H12N2O)] (6), have been prepared and characterized by using infrared spectroscopy, and, in the case of four of these [(1), (4), (5) and (6)], by single-crystal X-ray diffraction methods. In all examples, primary cyclic

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32

Amrahov, N. R. "INFLUENCE OF DINITROSALICYLIC ACID ON THE PROTECTIVE SYSTEM OF COTTON SEEDLINGS (Gossypium hirsutum L.)." Advances in Biology & Earth Sciences 9, no. 1 (2024): 111–23. http://dx.doi.org/10.62476/abes9111.

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Cotton growing, being an important agro-industrial object, is being improved through the introduction of new mechanisms to increase resistance to various external stress factors. Taking into account the previously studied phytohormones, the purpose of our study was to identify the effect of the salicylic acid derivative, dinitrosalicylic acid (DNSA), on the biochemical processes in the common cotton AP-317 genotype. It was established that low concentrations of DNSA-0.01 mM decreased production of NO radical, catalase and PPO activity, as well as absorption of phosphorus-anions from the nutrie

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33

Galan, Manuel, Antonio Garcia-Santana, and Antonio Sanchez. "ChemInform Abstract: Proton Transfer Reactions in Intramolecular Hydrogen Bonded Acids: T-Jump Studies with 3,5-Dinitrosalicylic Acid." ChemInform 30, no. 49 (2010): no. http://dx.doi.org/10.1002/chin.199949284.

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34

Negrulescu, Anamaria, Viorica Patrulea, Manuela M. Mincea, Cosmin Ionascu, Beatrice A. Vlad-Oros, and Vasile Ostafe. "Adapting the reducing sugars method with dinitrosalicylic acid to microtiter plates and microwave heating." Journal of the Brazilian Chemical Society 23, no. 12 (2012): 2176–82. http://dx.doi.org/10.1590/s0103-50532013005000003.

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35

Smith, Graham, Raymond C. Bott, and Urs D. Wermuth. "The 1:1 proton-transfer complex of 3,5-dinitrosalicylic acid with (8-quinolinyl)urea." Acta Crystallographica Section E Structure Reports Online 57, no. 9 (2001): o895—o897. http://dx.doi.org/10.1107/s1600536801013666.

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36

Kumar, Ashwani, Anup Pandith, and Hong-Seok Kim. "Pyrenebutylamidopropylimidazole as a multi-analyte sensor for 3,5-dinitrosalicylic acid and Hg 2+ ions." Journal of Luminescence 172 (April 2016): 309–16. http://dx.doi.org/10.1016/j.jlumin.2015.11.035.

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37

Saqib, Abdul Aala Najmus, and Philip John Whitney. "Differential behaviour of the dinitrosalicylic acid (DNS) reagent towards mono- and di-saccharide sugars." Biomass and Bioenergy 35, no. 11 (2011): 4748–50. http://dx.doi.org/10.1016/j.biombioe.2011.09.013.

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38

B., Marichamy, and Pavithra M. "Complexation of Co(II) with 3,5-dinitrosalicylic acid: Synthesis, Spectral studies and Antibacterial activities." Chemistry Research Journal 8, no. 5 (2023): 1–7. https://doi.org/10.5281/zenodo.11381079.

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<strong>Abstract </strong> The metal complexes have been characterized by elemental analysis, electrical conductance and spectral studies. UV spectra of the complex shows intraligand and charge transfer transitions. Bonding of the metal ion through N- and O- donor atoms of the ligands is revealed by IR studies, and the chemical environment of the protons is confirmed by NMR studies. The agar cup method has been used to study the antibacterial activity of the complexes against the pathogenic bacteria E.Coli, S.aureus and Klebsiella pneumonia.

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39

Simon, P. W., and R. E. Freeman. "A Rapid Method for Screening Reducing Sugar in Carrot Roots." HortScience 20, no. 1 (1985): 133–34. http://dx.doi.org/10.21273/hortsci.20.1.133.

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Abstract Eighteen methods were evaluated to quantify reducing sugars in carrot (Daucus carota L.) roots using drops of juice spotted onto chromatography paper. Reducing sugar detection with dinitrosalicylic acid was rapid (12 to 30 samples per hr) and correlated very well with values obtained by use of high performance liquid chromatography (r = 0.88 overall, ranging from 0.76 to 0.98 in a genetically diverse range of populations). High reducing sugar, low sucrose (Rs/—) roots could be distinguished from low reducing sugar, high sucrose (rs/rs) roots with little error. This method readily comp

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40

Shankara Prasad, Holehundi J., Devaraju, Vinaya, Hemmige S. Yathirajan, Sean R. Parkin, and Christopher Glidewell. "Syntheses and crystal structures of 4-(4-nitrophenyl)piperazin-1-ium benzoate monohydrate and 4-(4-nitrophenyl)piperazin-1-ium 2-carboxy-4,6-dinitrophenolate." Acta Crystallographica Section E Crystallographic Communications 78, no. 8 (2022): 840–45. http://dx.doi.org/10.1107/s2056989022007472.

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Crystal structures are reported for two molecular salts containing the 4-(4-nitrophenyl)piperazin-1-ium cation. Co-crystallization from methanol/ethyl acetate solution of N-(4-nitrophenyl)piperazine with benzoic acid gives the benzoate salt, which crystallizes as a monohydrate, C10H14N3O2·C7H5O2·H2O, (I), and similar co-crystallization with 3,5-dinitrosalicylic acid yields the 2-carboxy-4,6-dinitrophenolate salt, C10H14N3O2·C7H3N2O7, (II). In the structure of (I), a combination of O—H...O, N—H...O and C—H...O hydrogen bonds links the components into sheets, while in the structure of (II), the

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Dian Halimah Batubara, Taslim, Seri Maulina, and Iriany. "HIDROLISIS SELULOSA MENGGUNAKAN KATALIS KARBON TERSULFONASI BERBASIS CANGKANG KEMIRI." Jurnal Teknik Kimia USU 7, no. 2 (2018): 23–27. http://dx.doi.org/10.32734/jtk.v7i2.1645.

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 Cogon grass (Imperata cylindrica) contains cellulose which is convertible to glucose through hydrolysis by using inorganic liquid acid catalyst. However, the use of such catalyst leads to corrosion problem, environment pollution, and complex separation. To overcome this problem, a sulfonated carbon catalyst was proposed. This study aimed to evaluate candlenut shell as carbon source for catalyst support in sulfonated carbon catalyst, and its application in cellulose hydrolysis. Candlenut shell was carbonized at 300-550oC for 4 h. Resulting carbon was sulfonated at 120-150oC for 6 h. Sulf

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Bailey, Michael J. "A note on the use of dinitrosalicylic acid for determining the products of enzymatic reactions." Applied Microbiology and Biotechnology 29, no. 5 (1988): 494–96. http://dx.doi.org/10.1007/bf00269074.

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Kais, R., and S. Adnan. "Synthesis, Identification and Studying Biological Activity of Some Heterocyclic Derivatives from 3, 5-Dinitrosalicylic Acid." Journal of Physics: Conference Series 1234 (July 2019): 012091. http://dx.doi.org/10.1088/1742-6596/1234/1/012091.

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Athmani, A. S., F. Madi, I. Laafifi, et al. "DFT Investigation of a Charge-Transfer Complex Formation Between p-Phenylenediamine and 3,5-Dinitrosalicylic Acid." Journal of Structural Chemistry 60, no. 12 (2019): 1906–16. http://dx.doi.org/10.1134/s0022476619120060.

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Kumar, Ashwani, Ju-Young Lee, and Hong-Seok Kim. "Selective fluorescence sensing of 3,5-dinitrosalicylic acid based on pyrenesulfonamide-functionalized inorganic/organic hybrid nanoparticles." Journal of Industrial and Engineering Chemistry 44 (December 2016): 82–89. http://dx.doi.org/10.1016/j.jiec.2016.08.010.

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Taslim, Dian Halimah Batubara, Seri Maulina, Iriany, and Okta Bani. "Preparation and Characterization of Sulfonated Carbon from Candlenut Shell as Catalyst for Hydrolysis of Cogon Grass Cellulose into Glucose." Asian Journal of Chemistry 32, no. 6 (2020): 1404–8. http://dx.doi.org/10.14233/ajchem.2020.22613.

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Cogon grass (Imperata cylindrica) is convertible into glucose by hydrolysis process, which usually requires a catalyst. A solid acid catalyst of sulfonated carbon was used in this work. This study aimed to observe the viability of candlenut shell as carbonaceous source in solid acid catalyst production and to characterize the sulfonated carbon. The carbonization was performed at 250-550 ºC for 4 h, while sulfonation was carried out at 100-180 ºC for 6 h. Sulfonated carbon was then characterized by H+ activity/acid density test, scanning electron microscopy-energy dispersive X-ray spectroscopy

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AHMED EL-IMAM, Amina M., Muinat O. KAZEEM, Mutiat B. ODEBISI, Mushaffa A. OKE, and Azeezat O. ABIDOYE. "Production of Itaconic Acid from Jatropha curcas Seed Cake by Aspergillus terreus." Notulae Scientia Biologicae 5, no. 1 (2013): 57–61. http://dx.doi.org/10.15835/nsb518355.

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Submerged substrate fermentation of Jatropha seed cake, a by-product of oil extraction from Jatropha curcas seed was carried out using Aspergillus terreus for the production of itaconic acid. The Jatropha seed cake was initially converted into fermentable sugars by dilute acid hydrolysis using 50% sulphuric acid. The rate of hydrolysis was 1.04 gL-1. The fermentation process was carried out at room temperature, agitation of 400 rpm and three physico-chemical parameters (pH, inoculum size and substrate concentration) were varied. Itaconic acid and glucose assays were carried out by spectrophoto

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Kirti, Rani. "Aqueous Two Phase Purification of Vigna radiata Amylase and its Characterization." International Journal of Current Pharmaceutical Review and Research 3, no. 3 (2012): 47–53. https://doi.org/10.5281/zenodo.12697901.

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Amylase is digested the starch from the non-reducing end and thus producing limit dextrinsand maltose too which has industrial applications such as in food, pharmaceutical, paper,leather, detergent and textile industries. Amylase was extracted and purified from Vignaradiata (moong seeds) by a streamline method without the use of proteolytic and lipolyticenzymes. The study features of present method were partial purification of crude enzymeextract done by ammonium sulphate precipitation at low temperature followed by aqueoustwo phase extraction by potassium phosphate-bi-phospahte buffer system

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Bott, Raymond C., Graham Smith, Urs D. Wermuth, and Nathan C. Dwyer. "Molecular Cocrystals of Aromatic Carboxylic Acids with Unsymmetrically Substituted Ureas. The Structures of Phenylurea and the 1 : 1 Adducts of Phenylurea with a Series of Nitro-Substituted Acids." Australian Journal of Chemistry 53, no. 9 (2000): 767. http://dx.doi.org/10.1071/ch00099.

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The crystal structure of phenylurea (1), [(C7H8N2O)], has been determined and revealed a simple cyclic dimer involving hydrogen bonding between the two nitrogen atoms of one molecule and the oxygen atom of a second molecule. The system is completed by a hydrogen bond between the non-substituted nitrogen atom of a third molecule and the oxygen atom of the second molecule to form a chain polymer. The 1 : 1 molecular adducts of phenylurea with 2-nitrobenzoic acid, [(C7H5NO4)(C7H8N2O)] (2), 3-nitrobenzoic acid, [(C7H5NO4)(C7H8N2O)] (3), 3,5-dinitrobenzoic acid, [(C7H4N2O6)(C7H8N2O)] (4), 2,4,6-tri

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Teixeira, Ricardo Sposina Sobral, Ayla Sant’Ana da Silva, Viridiana Santana Ferreira-Leitão, and Elba Pinto da Silva Bon. "Amino acids interference on the quantification of reducing sugars by the 3,5-dinitrosalicylic acid assay mislead carbohydrase activity measurements." Carbohydrate Research 363 (December 2012): 33–37. http://dx.doi.org/10.1016/j.carres.2012.09.024.

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