Log in

Relevant bibliographies by topics / Cyanides Hydrolysis / Journal articles

To see the other types of publications on this topic, follow the link: Cyanides Hydrolysis.

Journal articles on the topic 'Cyanides Hydrolysis'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Cyanides Hydrolysis.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Hargono, Hargono, Andri Cahyo Kumoro, and Bakti Jos. "Inhibitory Effects of Cyanide on the Activity of Granular Starch Hydrolyzing Enzyme (GSHE) during Hydrolysis of Cassava (Manihot Esculenta Crantz) Starch." Periodica Polytechnica Chemical Engineering 63, no. 1 (2018): 11–17. http://dx.doi.org/10.3311/ppch.12006.

Full text

Abstract:

The kinetics and inhibitory effects of cyanide on the granular starch hydrolyzing enzyme (GSHE) activity during hydrolysis of cassava (Manihot esculenta Crantz) starch at low temperature were studied. The substrates included native cassava starch at various concentrations (100-400 g/L) and native cassava starches with added cyanide at various concentrations (50-150 mg/kg), while the concentration of enzyme was 1.5% (w/w). A decrease in reducing sugar concentration during hydrolysis of cassava starch indicated that the cyanide reduced the enzyme activity. Lineweaver-Burk plot of Michaelis-Mente

APA, Harvard, Vancouver, ISO, and other styles

2

Petrov, S. V., and V. F. Petrov. "Hydrolysis of cyanides in aqueous solutions." Russian Journal of Inorganic Chemistry 52, no. 5 (2007): 793–95. http://dx.doi.org/10.1134/s0036023607050245.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Dhillon, Jasvinder, Suneel Chhatre, Rishi Shanker, and N. Shivaraman. "Transformation of aliphatic and aromatic nitriles by a nitrilase from Pseudomonas sp." Canadian Journal of Microbiology 45, no. 10 (1999): 811–15. http://dx.doi.org/10.1139/w99-087.

Full text

Abstract:

A Pseudomonas sp. (S1) isolated from a garden soil possessed a unique nitrilase, which is capable of catalyzing the direct hydrolysis of both potassium and organic cyanides to their corresponding carboxylic acids and ammonia, without the formation of amide as an intermediate. The nitrilase was purified with 4.8% recovery in three steps from a cell extract of the strain. The relative mobility of the homogenous enzyme preparation in SDS and native polyacrylamide gels indicated molecular weight of 41 kDa, approximately. Pseudomonas sp. (S1) utilized all the nitriles as carbon and nitrogen sources

APA, Harvard, Vancouver, ISO, and other styles

4

Midler, M., C. M. Bagner, A. S. Wildman, and E. S. Venkataramani. "Destruction of cyanides by alkaline hydrolysis in a pipeline reactor." Environmental Progress 11, no. 4 (1992): 251–55. http://dx.doi.org/10.1002/ep.670110410.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Christoffers, Jens, and David Kieslich. "Cyanide Anions as Nucleophilic Catalysts in Organic Synthesis." Synthesis 53, no. 19 (2021): 3485–96. http://dx.doi.org/10.1055/a-1499-8943.

Full text

Abstract:

AbstractThe nucleophilic addition of a cyanide anion to a carbonyl group is the basis for several cyanide-catalyzed organic reactions, which are summarized in this review. Since cyanide is also a good leaving group, it is an excellent catalyst for transacylation reactions. As an electron-withdrawing group, it also stabilizes a negative charge in its α-position, thus allowing the umpolung of aldehydes to formyl anion equivalents. The two leading examples are the benzoin condensation and the Michael–Stetter reaction furnishing α-hydroxy ketones and 1,4-dicarbonyl compounds, which are both cataly

APA, Harvard, Vancouver, ISO, and other styles

6

Taydakov, Ilya V., and Mikhail A. Kiskin. "On the hydrolysis of diethyl 2-(perfluorophenyl)malonate." Beilstein Journal of Organic Chemistry 16 (July 28, 2020): 1863–68. http://dx.doi.org/10.3762/bjoc.16.153.

Full text

Abstract:

Diethyl 2-(perfluorophenyl)malonate was synthesized in 47% isolated yield by the reaction of sodium diethyl malonate and hexafluorobenzene. The resulting compound was considered as a starting material for synthesizing 2-(perfluorophenyl)malonic acid by hydrolysis. It was found that the desired 2-(perfluorophenyl)malonic acid could not be obtained from this ester by hydrolysis, neither under basic nor under acidic conditions. Nevertheless, hydrolysis of the ester with a mixture of HBr and AcOH gave 2-(perfluorophenyl)acetic acid in a good preparative yield of 63%. A significant advantage of thi

APA, Harvard, Vancouver, ISO, and other styles

7

Cenčič, Matjaž, Ivan Kobal, and Janvit Golob. "Thermal Hydrolysis of Cyanides in Spent Pot Lining of Aluminium Electrolysis." Chemical Engineering & Technology 21, no. 6 (1998): 523–32. http://dx.doi.org/10.1002/(sici)1521-4125(199806)21:6<523::aid-ceat523>3.0.co;2-p.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Geresh, Shimona, Yakir Giron, Ygal Gilboa, and Robert Glaser. "Electronic substituent effects in the nitrilase-catalyzed hydrolysis of para-substituted benzyl cyanides." Tetrahedron 49, no. 44 (1993): 10099–102. http://dx.doi.org/10.1016/s0040-4020(01)80205-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Rudel, Stefan S., Sebastian A. Baer, Patrick Woidy, et al. "Recent advances in the chemistry of uranium halides in anhydrous ammonia." Zeitschrift für Kristallographie - Crystalline Materials 233, no. 12 (2018): 817–44. http://dx.doi.org/10.1515/zkri-2018-2066.

Full text

Abstract:

Abstract This article presents an overview of recent advancements in the field of uranium chemistry, paying special attention to the preparation of starting materials and to the chemistry of uranium halides in liquid ammonia. Where suitable, insights into the chemistry of thorium are also presented. Herein, we report upon the crystal structures of several ammine complexes as well as their deprotonation products. Specific examples of hydrolysis products in liquid ammonia are showcased. Additionally, advancements in the preparation of uranium cyanides are presented.

APA, Harvard, Vancouver, ISO, and other styles

10

Khusnutdinov, Ravil, Tatyana Egorova, Leonard Khalilov, Ekaterina Meshcheriakova, and Usein Dzhemilev. "Direct and Stereoselective Iron-Catalyzed Amidation of Binor-S with Alkyl and Aryl Cyanides in Water." Synthesis 50, no. 07 (2018): 1555–59. http://dx.doi.org/10.1055/s-0036-1591881.

Full text

Abstract:

The amidation of heptacyclo[8.4.0.02,12.03,8.04,6.05,9.011,13]tetradecane (binor-S) with aceto-, propio-, valero-, and benzonitrile was performed in the presence of water and FeCl3·6H2O as catalyst to give the corresponding 10-exo-amidohexacyclo[9.2.1.02,7.03,5.04,8.09,13]tetradecanes. Hydrolysis of 10-exo-acetamidohexacyclo[9.2.1.02,7.03,5.04,8.09,13]tetradecane with sodium hydroxide in n-butanol afforded 10-exo-aminohexacyclo[9.2.1.02,7.03,5.04,8.09,13]tetradecane in quantitative yield.

APA, Harvard, Vancouver, ISO, and other styles

11

GERESH, S., Y. GIRON, Y. GILBOA, and R. GLASER. "ChemInform Abstract: Electronic Substituent Effects in the Nitrilase-Catalyzed Hydrolysis of para-Substituted Benzyl Cyanides." ChemInform 25, no. 7 (2010): no. http://dx.doi.org/10.1002/chin.199407060.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Erker, Gerhard, Michael Riedel, Sandra Koch, Tim Joedicke, and Ernst-Ulrich Wuerthwein. "Preparation of Stable Primary Enamines: 1-Aminobutadienes by Allyl Grignard Addition to Aryl Cyanides Followed by Controlled Hydrolysis." Journal of Organic Chemistry 60, no. 16 (1995): 5284–90. http://dx.doi.org/10.1021/jo00121a055.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Negrón-Mendoza, Alicia, and Sergio Ramos-Bernal. "Hydrogen Cyanide Polymers as Prebiotic Sources of Biological Compounds in Terrestrial and Extraterrestrial Environments." International Astronomical Union Colloquium 161 (January 1997): 413–18. http://dx.doi.org/10.1017/s0252921100014925.

Full text

Abstract:

AbstractAqueous solutions of cyanides are frequently used in experiments related to prebiotic chemistry. CNcontaining molecules are key compounds in this type of synthesis. This is due to the high chemical reactivity of the CN group, their abundance in the interstellar space, in comets, and the facility of their formation from simulated experiments. Implications for prebiotic chemistry are profound mainly because these polymeric materials upon hydrolysis release compounds of biological significance such as amino acids, purines, carboxylic acids, etc. Since the products formed from a CN-contain

APA, Harvard, Vancouver, ISO, and other styles

14

Robuck, Stephen J., and Richard G. Luthy. "Destruction of Iron-Complexed Cyanide by Alkaline Hydrolysis." Water Science and Technology 21, no. 6-7 (1989): 547–58. http://dx.doi.org/10.2166/wst.1989.0257.

Full text

Abstract:

Iron-complexed cyanide compounds are found in various industrial wastes, and are resistant to destruction by conventional technologies used to treat cyanide-bearing wastes. This study evaluated hydrolytic destruction of iron-complexed cyanide in leachates from land disposal of spent carbonanceous material used to line aluminum reduction cells. The investigation showed that iron-cyanide complexes may be hydrolyzed under alkaline conditions at elevated temperatures and pressures, e.g. in the range of 165-180 °C and 100-150 psig. The hydrolysis reaction is apparently first-order with respect to t

APA, Harvard, Vancouver, ISO, and other styles

15

Nguyen, V. P. Thinh, Jon Stewart, Michel Lopez, Irina Ioannou, and Florent Allais. "Glucosinolates: Natural Occurrence, Biosynthesis, Accessibility, Isolation, Structures, and Biological Activities." Molecules 25, no. 19 (2020): 4537. http://dx.doi.org/10.3390/molecules25194537.

Full text

Abstract:

Glucosinolates (GSLs) are secondary plant metabolites abundantly found in plant order Brassicales. GSLs are constituted by an S-β-d-glucopyrano unit anomerically connected to O-sulfated (Z)-thiohydroximate moiety. The side-chain of the O-sulfate thiohydroximate moiety, which is derived from a different amino acid, contributes to the diversity of natural GSL, with more than 130 structures identified and validated to this day. Both the structural diversity of GSL and their biological implication in plants have been biochemically studied. Although chemical syntheses of GSL have been devised to gi

APA, Harvard, Vancouver, ISO, and other styles

16

Watanabe, A., K. Yano, K. Ikebukuro, and I. Karube. "Cyanide hydrolysis in a cyanide-degrading bacterium, Pseudomonas stutzeri AK61, by cyanidase." Microbiology 144, no. 6 (1998): 1677–82. http://dx.doi.org/10.1099/00221287-144-6-1677.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Pentzold, Stefan, Mikael Kryger Jensen, Annemarie Matthes та ін. "Spatial separation of the cyanogenic β-glucosidase ZfBGD2 and cyanogenic glucosides in the haemolymph of Zygaena larvae facilitates cyanide release". Royal Society Open Science 4, № 6 (2017): 170262. http://dx.doi.org/10.1098/rsos.170262.

Full text

Abstract:

Low molecular weight compounds are typically used by insects and plants for defence against predators. They are often stored as inactive β-glucosides and kept separate from activating β-glucosidases. When the two components are mixed, the β-glucosides are hydrolysed releasing toxic aglucones. Cyanogenic plants contain cyanogenic glucosides and release hydrogen cyanide due to such a well-characterized two-component system. Some arthropods are also cyanogenic, but comparatively little is known about their system. Here, we identify a specific β-glucosidase ( ZfBGD2) involved in cyanogenesis from

APA, Harvard, Vancouver, ISO, and other styles

18

Duncan, A. J., T. Acamovic, and I. I. Onaga. "Urinary mercapturic acids as markers for the estimation of isothiocyanate release in the digestive tract of rats following oral adminstration of glucosinolates." Proceedings of the British Society of Animal Science 1995 (March 1995): 181. http://dx.doi.org/10.1017/s0308229600029470.

Full text

Abstract:

Glucosinolates are a group of plant thioglucosides, found in a range of plant genera, notably theBrassicae. Glucosinolates assume agricultural importance because of their presence in rapeseed meal and forage brassica crops whose nutritional value they may limit. Glucosinolates are hydrolysed under the action of plant or microbial myrosinase to release a range of toxic metabolites (see Duncan, 1991). For example, sinigrin, a commonly found glucosinolate, breaks down to allyl isothiocyanate (AITC) and allyl cyanide as well as a number of lesser components. The course of hydrolysis is influenced

APA, Harvard, Vancouver, ISO, and other styles

19

Pronin, Aleksei S., Spartak S. Yarovoy, Yakov M. Gayfulin, et al. "Cyanide Complexes Based on {Mo6I8}4+ and {W6I8}4+ Cluster Cores." Molecules 25, no. 24 (2020): 5796. http://dx.doi.org/10.3390/molecules25245796.

Full text

Abstract:

Compounds based on new cyanide cluster anions [{Mo6I8}(CN)6]2–, trans-[{Mo6I8}(CN)4(MeO)2]2– and trans-[{W6I8}(CN)2(MeO)4]2− were synthesized using mechanochemical or solvothermal synthesis. The crystal and electronic structures as well as spectroscopic properties of the anions were investigated. It was found that the new compounds exhibit red luminescence upon excitation by UV light in the solid state and solutions, as other cluster complexes based on {Mo6I8}4+ and {W6I8}4+ cores do. The compounds can be recrystallized from aqueous methanol solutions; besides this, it was shown using NMR and

APA, Harvard, Vancouver, ISO, and other styles

20

Duncan, A. J., and J. A. Milne. "The effect of ruminal metabolites of brassica-derived glucosinolates and s-methyl cysteine sulphoxide (smco) on the voluntary intake and metabolism of sheep." Proceedings of the British Society of Animal Production (1972) 1990 (March 1990): 34. http://dx.doi.org/10.1017/s030822960001816x.

Full text

Abstract:

Both glucosinolates and S-methyl cysteine sulphoxide (SMCO) have been implicated in the suboptimal intakes observed among lambs consuming forage brassicas. However, the effects on animal performance of the compounds administered in isolation have been marginal (Barry et al, 1982) and the toxicity of the compounds may be enhanced by interactions between their physiological effects. In order to test this, an experiment was conducted in which rumen metabolites of both SMCO and the predominant kale glucosinolate, sinigrin, were administered in combination to sheep and effects on voluntary intake a

APA, Harvard, Vancouver, ISO, and other styles

21

Clezy, PS, and K. Tonkin. "The Chemistry of Pyrrolic Compounds. LX. Reaction of Photoprotoporphyrin-IX Dimethyl Ester With Cyanide Ion." Australian Journal of Chemistry 40, no. 2 (1987): 413. http://dx.doi.org/10.1071/ch9870413.

Full text

Abstract:

Reaction of the a,β-unsaturated aldehyde system of photoprotoporphyrin IX dimethyl ester with cyanide ion yields a porphyrin with an acetamide side chain. Mechanistically, the reaction can be viewed as an intramolecular hydrolysis of the cyanide adduct driven by a return to a macrocycle with the porphyrin conjugation pathway.

APA, Harvard, Vancouver, ISO, and other styles

22

Castada, Hardy Z., Jinyi Liu, Sheryl Ann Barringer, and Xuesong Huang. "Cyanogenesis in Macadamia and Direct Analysis of Hydrogen Cyanide in Macadamia Flowers, Leaves, Husks, and Nuts Using Selected Ion Flow Tube–Mass Spectrometry." Foods 9, no. 2 (2020): 174. http://dx.doi.org/10.3390/foods9020174.

Full text

Abstract:

Macadamia has increasing commercial importance in the food, cosmetics, and pharmaceutical industries. However, the toxic compound hydrogen cyanide (HCN) released from the hydrolysis of cyanogenic compounds in Macadamia causes a safety risk. In this study, optimum conditions for the maximum release of HCN from Macadamia were evaluated. Direct headspace analysis of HCN above Macadamia plant parts (flower, leaves, nuts, and husks) was carried out using selected ion flow tube–mass spectrometry (SIFT-MS). The cyanogenic glycoside dhurrin and total cyanide in the extracts were analyzed using HPLC-MS

APA, Harvard, Vancouver, ISO, and other styles

23

Wang, Siyu, Xiangcheng Wang, and Yunping Hao. "Preparation of Zinc Cyanide and Elimination of Free Alkali in Cyanide." E3S Web of Conferences 233 (2021): 01110. http://dx.doi.org/10.1051/e3sconf/202123301110.

Full text

Abstract:

Zinc cyanide can be prepared by double decomposition reaction of sodium cyanide or potassium cyanide with zinc chloride. Before the preparation of zinc cyanide, it is necessary to remove the free alkali in the raw material sodium cyanide or potassium cyanide. Magnesium chloride is used to remove the free alkali in sodium cyanide or potassium cyanide. The concentration of cyanide ion in potassium cyanide solution under different conditions is measured. The results show that magnesium chloride can not only remove the original free alkali in potassium cyanide, but also promote the hydrolysis of p

APA, Harvard, Vancouver, ISO, and other styles

24

Krech, M. J., and M. A. Fieldes. "Analysis of the developmental regulation of the cyanogenic compounds in seedlings of two lines of Linum usitatissimum L." Canadian Journal of Botany 81, no. 10 (2003): 1029–38. http://dx.doi.org/10.1139/b03-097.

Full text

Abstract:

The developmental profiles and tissue distribution of the four cyanogenic compounds in seedlings of two developmentally contrasting inbred lines of flax (Linum usitatissimum L.) were examined using HPLC. During germination, the isoleucine-derived compound, neolinustatin, was hydrolysed faster in the more vigorous of the two lines. Furthermore, in this line, the neolinustatin content was higher in seeds and the accumulation of the other isoleucine-derived compound, lotaustralin, was also higher in the cotyledons of seedlings. In contrast, with one exception, the hydrolysis and accumulation of t

APA, Harvard, Vancouver, ISO, and other styles

25

FARQUHARSON, STUART, and FRANK E. INSCORE. "A SERS-BASED ANALYZER FOR POINT AND CONTINUOUS WATER MONITORING OF CHEMICAL AGENTS AND THEIR HYDROLYSIS PRODUCTS." International Journal of High Speed Electronics and Systems 17, no. 04 (2007): 719–28. http://dx.doi.org/10.1142/s0129156407004928.

Full text

Abstract:

Protection of military personnel and civilians from water supplies poisoned by chemical warfare agents (CWAs) requires an analyzer that has sufficient sensitivity (μg/L, ppb), specificity (differentiate the CWA from its hydrolysis products), and speed (less than 10 minutes) to be of value. In an effort to meet these requirements, we have been investigating the ability of surface-enhanced Raman spectroscopy (SERS) to detect cyanide and sulfur mustard in water. In our work, we have developed a novel SERS-active material that consists of a porous glass with trapped metal particles. Previously, we

APA, Harvard, Vancouver, ISO, and other styles

26

Kálmán, J., Z. Izsáki, L. Kovács, A. Grofcsik, and I. Szebényi. "Wet Air Oxidation of Toxic Industrial Effluents." Water Science and Technology 21, no. 4-5 (1989): 289–95. http://dx.doi.org/10.2166/wst.1989.0231.

Full text

Abstract:

The disposal of process wastewater from a wood carbonization factory was studied in a laboratory batch reactor. Chemical oxygen demand (COD) reduction of 92 - 96% was achieved for samples with initial COD concentrations of more than 100 g/l. The samples subjected to wet air oxidation showed no toxic effects in toxicology tests and were readily biodegradable. Effluent containing cyanide was also subjected to wet air oxidation, and a COD reduction of 75% and cyanide removal of 99.99997% was attained. The reaction rate and activation energy of cyanide hydrolysis were determined.

APA, Harvard, Vancouver, ISO, and other styles

27

Zaher, U., M. S. Moussa, I. N. Widyatmika, P. van Der Steen, H. J. Gijzen, and P. A. Vanrolleghem. "Modelling anaerobic digestion acclimatisation to a biodegradable toxicant: application to cyanide." Water Science and Technology 54, no. 4 (2006): 129–37. http://dx.doi.org/10.2166/wst.2006.534.

Full text

Abstract:

The observed acclimatisation to biodegradable toxicants in anaerobic cassava wastewater treatment is explained by modelling anaerobic cyanide degradation. A complete degradation pathway is proposed for cyanide. Cyanide degradation is modelled as enzymatic hydrolysis to formate and ammonia. Ammonia is added to the inorganic nitrogen content of the digester while formate is degraded by the hydrogenotrophic methanogens. Cyanide irreversible enzyme inhibition is modelled as an inhibition factor to acetate uptake processes. Cyanide irreversible toxicity is modelled as a decay factor to the acetate

APA, Harvard, Vancouver, ISO, and other styles

28

Marsh, J. D. F., W. B. S. Newling, and J. Rich. "The catalytic hydrolysis of hydrogen cyanide to ammonia." Journal of Applied Chemistry 2, no. 12 (2007): 681–84. http://dx.doi.org/10.1002/jctb.5010021202.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Stapleton, Mary T., Claudia M. Fuchsbauer, and Ashley P. Allshire. "BDM drives protein dephosphorylation and inhibits adenine nucleotide exchange in cardiomyocytes." American Journal of Physiology-Heart and Circulatory Physiology 275, no. 4 (1998): H1260—H1266. http://dx.doi.org/10.1152/ajpheart.1998.275.4.h1260.

Full text

Abstract:

Contractile dysfunction plays a key role in injury sustained by ischemic myocardium at reperfusion, whereas interventions that impede hypercontracture enhance recovery. In permeabilized adult rat cardiomyocytes, the negative inotrope 2,3-butanedione monoxime (BDM; 10–50 mM) inhibited rigor at low MgATP concentration but stimulated net ATP hydrolysis. Hydrolysis was attenuated by H-7, kaempferol, chelerythrine, and genistein. Evidently BDM opposed phosphorylation of both serine/threonine and tyrosine kinase target proteins, either directly or by enhancing protein phosphatase activity, in a futi

APA, Harvard, Vancouver, ISO, and other styles

30

Yan, Lin Xia, Sen Lin Tian, and Qiu Lin Zhang. "Catalytic Hydrolysis of Hydrogen Cyanide on Cu-Al Catalyst." Advanced Materials Research 1094 (March 2015): 15–19. http://dx.doi.org/10.4028/www.scientific.net/amr.1094.15.

Full text

Abstract:

Cu-Al catalysts were synthesized by the co-precipitation method to study hydrolysis of hydrogen cyanide. During the synthesis, the impact of Cu/Al molar ratio, pH value and calcination temperature was investigated and the best synthesis condition was found. The results indicate that the remove of hydrogen cyanide first increases and then decreases with increasing Cu/Al molar ratio, pH value and calcination temperature, which reaches the maxima and remains above 95% at 360 min when Cu/Al molar ratio is 2:1, pH value is approximately 8.0 and calcination temperature is 400°C around. The analysis

APA, Harvard, Vancouver, ISO, and other styles

31

Cataldo, Franco. "Organic matter formed from hydrolysis of metal carbides of the iron peak of cosmic elemental abundance." International Journal of Astrobiology 2, no. 1 (2003): 51–63. http://dx.doi.org/10.1017/s1473550403001393.

Full text

Abstract:

This work is a modern revisitation of an old idea of great chemists of the past such as Berthelot, Mendeleev, Cloez and Moissan: the formation of organic matter under pre-biotic conditions starting from the hydrolysis of metal carbides. This idea was originally proposed for the formation of petroleum in the Earth and was extended to other bodies of the solar system by Sokolov at the end of the 19th century. The reason for this revisitation lies in the fact that complex organic matter resembling a petroleum fraction may exist in certain protoplanetary nebulae. The present work starts with a sur

APA, Harvard, Vancouver, ISO, and other styles

32

Chiefari, J., S. Galanopoulos, WK Janowski, DIB Kerr, and RH Prager. "The Synthesis of Phosphonobaclofen, an Antagonist of Baclofen." Australian Journal of Chemistry 40, no. 9 (1987): 1511. http://dx.doi.org/10.1071/ch9871511.

Full text

Abstract:

Phosphonobaclofen, 3-amino-2-(4-chlorophenyl) propylphosphonic acid, has been synthesized in five steps from ethyl 3-(4-chloropheny1)but-2-enoate, and is a specific antagonist of baclofen . Two alternative synthetic pathways, involving conjugate addition of phosphite to 2-(4-chlorophenyl) propenenitrile and of cyanide to 2-(4-chlorophenyl) ethenylphosphonate ester, failed. Cyanide ion did add efficiently to ethyl 3-(4-chloropheny1)-2-diethoxyphosphinylprop-2- enoate, and hydrogenation followed by hydrolysis of the product gave (2S,3S)- and (2R,3R)-4-amino-3-(4-chloropheny1)-2-phosphonobutanoic

APA, Harvard, Vancouver, ISO, and other styles

33

Ding, Ming, and Kailiang Wang. "Determination of cyanide in bamboo shoots by microdiffusion combined with ion chromatography–pulsed amperometric detection." Royal Society Open Science 5, no. 4 (2018): 172128. http://dx.doi.org/10.1098/rsos.172128.

Full text

Abstract:

A practical method for the determination of cyanide in bamboo shoots has been developed using microdiffusion preparation integrated with ion chromatography–pulsed amperometric detection (IC-PAD). Cyanide was released from bamboo shoots after Conway cell microdiffusion, and then analysed by IC-PAD. In comparison with the previously reported methods, derivatization and ion-pairing agent addition were not required in this proposed microdiffusion combined with IC-PAD method. The microdiffusion parameters were optimized including hydrolysis systems, temperature, time, and so on. Under the optimum c

APA, Harvard, Vancouver, ISO, and other styles

34

Busch, E., D. Strack, and G. Weissenböck. "Cyanidin 3-Gentiobioside from Primary Leaves of Rye (Secale cereale L.)." Zeitschrift für Naturforschung C 41, no. 4 (1986): 485–86. http://dx.doi.org/10.1515/znc-1986-0417.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Iwashina, Tsukasa, Rinchen Yangzom, Yoshinori Murai, Kencho Dorji, Takayuki Mizuno, and Choki Wangmo. "Anthocyanins from the Red Flowers of Meconopsis wallichi in Bhutan." Natural Product Communications 13, no. 3 (2018): 1934578X1801300. http://dx.doi.org/10.1177/1934578x1801300322.

Full text

Abstract:

Three anthocyanins were isolated from the red flowers of Meconopsis wallichi in Bhutan. They were characterized as cyanidin 3- O-glucoside, cyanidin 3- O-sambubioside and cyanidin 3- O-(succinylsambubioside) by UV-VIS, LC-MS, acid hydrolysis, alkaline saponification, and HPLC comparisons with authentic samples. The latter anthocyanin was reported in nature for the first time. However, flavonoids except for anthocyanins were not found in the flowers, showing that the red color is due to three cyanidin glycosides alone, without copigments and metals. Although the anthocyanins were reported from

APA, Harvard, Vancouver, ISO, and other styles

36

Ofori-Sarpong, G., A. S. Adam, and R. K. Amankwah. "Detoxification of Cyanide Wastewater by Cyanotrophic Organisms: the case of Phanerochaete chrysosporium." Ghana Mining Journal 20, no. 1 (2020): 34–44. http://dx.doi.org/10.4314/gm.v20i1.4.

Full text

Abstract:

Abstract Cyanide, a carbon-nitrogen radical, is a major building block in many industries including pharmaceuticals, petrochemical and gold processing. In the gold extraction industry, cyanide has been the universal lixiviant for over a century due to better understood process chemistry, among others. Industries that discharge cyanide-laden effluents are mandated to keep concentrations below 0.2 mg/L to prevent death by cyanide-intoxification, which occurs when cyanide binds to key iron-containing enzymes and prevent them from supplying oxygen-containing blood to the tissues. Techniques

APA, Harvard, Vancouver, ISO, and other styles

37

Dahler, JM, C. Mcconchie, and CGN Turnbull. "Quantification of Cyanogenic Glycosides in Seedlings of Three Macadamia (Proteaceae) Species." Australian Journal of Botany 43, no. 6 (1995): 619. http://dx.doi.org/10.1071/bt9950619.

Full text

Abstract:

Members of the genus Macadamia contain cyanogenic compounds, which release hydrogen cyanide (HCN) on hydrolysis. Concentrations of releasable cyanide were measured in tissues of mature nuts and seedlings of Macadamia integrifolia Maiden & Betche, M. tetraphylla L.A.S. Johnson and M. ternifolia F.Muell. Root, cotyledon and leaf samples were assayed at several developmental stages from germination to maturation of the first leaves. All samples contained detectable levels of cyanide. Concentrations were low (0.15 μmol g-1 fresh weight) in cotyledons of mature M. integrifolia and M. tetraphyll

APA, Harvard, Vancouver, ISO, and other styles

38

Ma, Yixing, Fei Wang, Xueqian Wang, Ping Ning, Xuli Jing, and Jinhuan Cheng. "The hydrolysis of hydrogen cyanide over Nb/La–TiOx catalyst." Journal of the Taiwan Institute of Chemical Engineers 70 (January 2017): 141–49. http://dx.doi.org/10.1016/j.jtice.2016.10.024.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Marsh, J. D. F., and Margaret J. Martin. "The hydrolysis and polymerization of hydrogen cyanide in alkaline solutions." Journal of Applied Chemistry 7, no. 4 (2007): 205–9. http://dx.doi.org/10.1002/jctb.5010070409.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Noll, T., A. Koop, and H. M. Piper. "Mitochondrial ATP-synthase activity in cardiomyocytes after aerobic-anaerobic metabolic transition." American Journal of Physiology-Cell Physiology 262, no. 5 (1992): C1297—C1303. http://dx.doi.org/10.1152/ajpcell.1992.262.5.c1297.

Full text

Abstract:

It has been hypothesized that, in oxygen-depleted myocardial cells, mitochondria are depolarized and the F1,F0-proton adenosinetriphosphatase (ATPase) catalyzes net ATP hydrolysis when the cells exhibit the signs of an aerobic-anaerobic metabolic transition, which are increased lactate formation and decline in high-energy phosphate reserves [W. Rouslin, C. W. Broge, and I. L. Grupp. Am. J. Physiol. 259 (Heart Circ. Physiol. 28): H1759-H1766, 1990]. This hypothesis was tested by incubating isolated cardiomyocytes from the adult rat in substrate-free Tyrode solution (37 degrees C, pH 7.4) at a P

APA, Harvard, Vancouver, ISO, and other styles

41

Fink, C. S., M. Hamosh, P. Hamosh, S. J. DeNigris, and D. K. Kasbekar. "Lipase secretion from dispersed rabbit gastric glands." American Journal of Physiology-Gastrointestinal and Liver Physiology 248, no. 1 (1985): G68—G72. http://dx.doi.org/10.1152/ajpgi.1985.248.1.g68.

Full text

Abstract:

We have measured gastric lipase activity in dispersed glands of rabbit stomach by quantitating the hydrolysis of tri[3H]olein. Lipase activity in isolated gastric glands was 200-400 nmol [3H]oleic acid released per milligram dry weight per minute. The percentage of lipase activity released during incubation for 30 min at 37 degrees C under basal conditions was 1.5-4.5%. Lipase release was stimulated by secretagogues: 10 nM cholecystokinin octapeptide (CCK-8) and 100 microM carbachol led to four- to sixfold and two- to threefold higher enzyme secretion, respectively, while histamine had no effe

APA, Harvard, Vancouver, ISO, and other styles

42

Šindelář, Karel, Jiří Holubek, Oluše Matoušová, et al. "Aminoalkylidene and aminoalkyl derivatives of 6,11-dihydrodibenzo[b,e]thiepin-2- and -9-carbonitrile and 4,10-dihydrothieno[2,3-c]-1-benzothiepin-6-carbonitrile; Antidepressants with a new activity profile." Collection of Czechoslovak Chemical Communications 53, no. 2 (1988): 340–60. http://dx.doi.org/10.1135/cccc19880340.

Full text

Abstract:

Starting from the bromo ketones VIIc, XIII, and XXIV and proceeding via the alcohols VIIIc, IXc, XIV, XVII, and XXVI, the olefinic compounds IIc (+ VI), Xc (+XI), XVc and XIXc(+XXc), and the saturated compound XVIc were prepared. The pairs of geometrical isomers were separated by crystallization of salts and the individual compounds Iic, Xc, XVc, XVIc, XIXc, and XXc were transformed by treatment with cuprous cyanide in hexamethylphosphoric triamide to the corresponding cyano compounds IIb, Xb, XVb, XVIb, XIXb, and XXb. Compound IIb was synthesized also from the ketone VIIc via the cyano ketone

APA, Harvard, Vancouver, ISO, and other styles

43

Delazar, Abbas, Laleh Khodaie, Jalil Afshar, Lutfun Nahar, and Satyajit Sarker. "Isolation and free-radical-scavenging properties of cyanidin 3-O-glycosides from the fruits of Ribes biebersteinii Berl." Acta Pharmaceutica 60, no. 1 (2010): 1–11. http://dx.doi.org/10.2478/v10007-010-0007-x.

Full text

Abstract:

Isolation and free-radical-scavenging properties of cyanidin 3-O-glycosides from the fruits of Ribes biebersteinii Berl. The reversed-phase preparative high performance liquid chromatographic purification of the methanol extract of the fruits of Ribes biebersteinii Berl. (Grossulariaceae) afforded five cyanidin glycosides, 3-O-sambubiosyl-5-O-glucosyl cyanidin (1), cyanidin 3-O-sambubioside (2), cyanidin 3-O-glucoside (3), cyanidin 3-O-(2G-xylosyl)-rutinoside (4) and cyanidin 3-O-rutinoside (5). They showed considerable free-radical-scavenging properties in the 2,2-diphenyl-1-picrylhydrazyl (D

APA, Harvard, Vancouver, ISO, and other styles

44

Fallon, R. D. "Evidence of hydrolytic route for anaerobic cyanide degradation." Applied and Environmental Microbiology 58, no. 9 (1992): 3163–64. http://dx.doi.org/10.1128/aem.58.9.3163-3164.1992.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Villafañe-Barajas, Saúl A., Marta Ruiz-Bermejo, Pedro Rayo-Pizarroso, and María Colín-García. "Characterization of HCN-Derived Thermal Polymer: Implications for Chemical Evolution." Processes 8, no. 8 (2020): 968. http://dx.doi.org/10.3390/pr8080968.

Full text

Abstract:

Hydrogen cyanide (HCN)-derived polymers have been recognized as sources of relevant organic molecules in prebiotic chemistry and material sciences. However, there are considerable gaps in the knowledge regarding the polymeric nature, the physicochemical properties, and the chemical pathways along polymer synthesis. HCN might have played an important role in prebiotic hydrothermal environments; however, only few experiments use cyanide species considering hydrothermal conditions. In this work, we synthesized an HCN-derived thermal polymer simulating an alkaline hydrothermal environment (i.e., H

APA, Harvard, Vancouver, ISO, and other styles

46

Bradbury, J. H., S. V. Egan, and M. J. Lynch. "Analysis of cyanide in cassava using acid hydrolysis of cyanogenic glucosides." Journal of the Science of Food and Agriculture 55, no. 2 (1991): 277–90. http://dx.doi.org/10.1002/jsfa.2740550213.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Beattie, JK, and GA Polyblank. "Copper-Catalyzed Oxidation of Cyanide by Peroxide in Alkaline Aqueous Solution." Australian Journal of Chemistry 48, no. 4 (1995): 861. http://dx.doi.org/10.1071/ch9950861.

Full text

Abstract:

The oxidation of cyanide by peroxide in alkaline aqueous solution is catalysed by copper complexes. In the presence of excess cyanide, copper(II) is reduced to form the tricyanocuprate (I) complex. The cyanogen oxidation product is hydrolysed with disproportionation to cyanate and cyanide:2CuII+2CN-→ 2CuI+(CN)2(CN)2+2OH- → OCN-+CN-+H2OCuI+3CN- ↔ Cu(CN)32-The stoichiometry and kinetics of the catalysed oxidation have been investigated. Hydrogen peroxide oxidizes coordinated cyanide with a rate that is first order in peroxide and first order in copper but independent of cyanide concentration in

APA, Harvard, Vancouver, ISO, and other styles

48

Fernandez, Ruby F., Elena Dolghih, and Daniel A. Kunz. "Enzymatic Assimilation of Cyanide via Pterin-Dependent Oxygenolytic Cleavage to Ammonia and Formate in Pseudomonas fluorescens NCIMB 11764." Applied and Environmental Microbiology 70, no. 1 (2004): 121–28. http://dx.doi.org/10.1128/aem.70.1.121-128.2004.

Full text

Abstract:

ABSTRACT Utilization of cyanide as a nitrogen source by Pseudomonas fluorescens NCIMB 11764 occurs via oxidative conversion to carbon dioxide and ammonia, with the latter compound satisfying the nitrogen requirement. Substrate attack is initiated by cyanide oxygenase (CNO), which has been shown previously to have properties of a pterin-dependent hydroxylase. CNO was purified 71-fold and catalyzed the quantitative conversion of cyanide supplied at micromolar concentrations (10 to 50 μM) to formate and ammonia. The specific activity of the partially purified enzyme was approximately 500 mU/mg of

APA, Harvard, Vancouver, ISO, and other styles

49

LI, MINGGANG, GUOYING WEI, JIANFANG WANG, MENG LI, XIXI ZHAO, and YUZE BAI. "COPPER PLATING FROM NON-CYANIDE ALKALINE BATHS." Surface Review and Letters 21, no. 01 (2014): 1450009. http://dx.doi.org/10.1142/s0218625x14500097.

Full text

Abstract:

Non-cyanide alkaline bath was used to prepare copper thin films. Influences of various temperatures on deposition rates, surface morphologies and microstructures of films were investigated. Copper thin films prepared from non-cyanide alkaline bath show typical nodular structures. Copper films fabricated at higher temperature possess rough surface due to hydrolysis of complexing agents. According to the XRD patterns, all deposited films were crystalline and showed Cu (111), Cu (200) and Cu (220) peaks. The intensity of peak (200) increases gradually with the rise on bath temperatures. Films wit

APA, Harvard, Vancouver, ISO, and other styles

50

Kempson, S. A. "NAD-glycohydrolase in renal brush border membranes." American Journal of Physiology-Renal Physiology 249, no. 3 (1985): F366—F373. http://dx.doi.org/10.1152/ajprenal.1985.249.3.f366.

Full text

Abstract:

NAD is hydrolyzed during incubation with isolated renal brush border membranes (BBM). The specific enzymatic mechanisms have not been identified apart from the activity of ADP-ribosyltransferase, which accounts for a very small proportion of the total hydrolysis. In the present study, an NAD-glycohydrolase (NGH) was identified in the renal BBM using the cyanide-addition assay to monitor hydrolysis of NAD at the nicotinamide-ribose bond. The production of nicotinamide and ADP-ribose, the expected reaction products, was determined by thin-layer chromatography. The NGH was enriched ninefold in th

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!