Solid adenine and seawater salts exposed to gamma radiation: An FT-IR and EPR spectroscopy analysis for prebiotic chemistry

Objective: The present investigation focus on screening of phytochemicals and FT-IR analysis of Myristica dactyloids fruit extracts. The fruit extracts were prepared using five different solvents.Methods: The phytochemical analysis and FT-IR (Fourier transform infrared spectroscopy) analysis were performed using standard methods.Results: The results reveals that the alkaloids, steroids, flavonoids, phenolic compounds, proteins, carbohydrates, cardio glycosides and saponins were present in methanolic extract when compared to other solvent extracts. FT-IR analysis shows the presence of different functional groups such as carboxylic acids, aromatics, alkanes, alcohols, phenols, aliphatic amines, alkenes and amine groups in the fruit extracts.Conclusion: The study concluded that the methanolic extract (M. dactyloides fruit) has potential bioactive compounds.

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Adsorption of Adenine, Cytosine, Thymine, and Uracil on Sulfide-Modified Montmorillonite: FT-IR, Mössbauer and EPR Spectroscopy and X-Ray Diffractometry Studies

Origins of Life and Evolution of Biospheres ◽

10.1007/s11084-011-9244-3 ◽

2011 ◽

Vol 41 (5) ◽

Cited By ~ 28

Author(s):

Cristine E. A. Carneiro ◽

Graciele Berndt ◽

Ivan G. de Souza Junior ◽

Cláudio M. D. de Souza ◽

Andrea Paesano ◽

...

Keyword(s):

Epr Spectroscopy ◽

X Ray ◽

Modified Montmorillonite ◽

Ft Ir

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Adsorption of cysteine on hematite, magnetite and ferrihydrite: FT-IR, Mössbauer, EPR spectroscopy and X-ray diffractometry studies

Amino Acids ◽

10.1007/s00726-010-0635-y ◽

2010 ◽

Vol 40 (1) ◽

pp. 205-214 ◽

Cited By ~ 39

Author(s):

Alessandra P. Vieira ◽

Graciele Berndt ◽

Ivan G. de Souza Junior ◽

Eduardo Di Mauro ◽

Andrea Paesano ◽

...

Keyword(s):

Epr Spectroscopy ◽

X Ray ◽

Ft Ir

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Studying high-spin ferric heme proteins by pulsed EPR spectroscopy: Analysis of the ferric form of the E7Q mutant of human neuroglobin

Applied Magnetic Resonance ◽

10.1007/bf03166602 ◽

2007 ◽

Vol 31 (3-4) ◽

pp. 553-572 ◽

Cited By ~ 13

Author(s):

F. Trandafir ◽

P. Heerdt ◽

M. Fittipaldi ◽

E. Vinck ◽

S. Dewilde ◽

...

Keyword(s):

High Spin ◽

Epr Spectroscopy ◽

Heme Proteins ◽

Spectroscopy Analysis ◽

Pulsed Epr ◽

Ferric Heme

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Structural Study on Lithium-Barium Borophosphate Glasses Using Infrared and Raman Spectroscopy

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.626.11 ◽

2012 ◽

Vol 626 ◽

pp. 11-15

Author(s):

Wan Ming Hua ◽

Poh Sum Wong ◽

Rosli Hussin ◽

Zuhairi Ibrahim

Keyword(s):

Raman Spectroscopy ◽

Vibration Mode ◽

Progressive Increase ◽

Local Order ◽

Spectroscopy Analysis ◽

Borophosphate Glasses ◽

Infrared And Raman Spectroscopy ◽

Stretching Vibration ◽

Ft Ir ◽

Ir And Raman

This paper reported on the structural properties of Lithium-Barium borophosphate glasses. The glasses were prepared through melt quenching technique and studied in the compositional series which was 25Li2O:25BaO:(x)B2O3:(50-x)P2O5where 0x50 mol% .The aims of this work were to investigate the vibration mode about the local order around phosphorus tetrahedral structures and the boron coordination changed from trigonal to tetrahedral structures. Their basic properties were determined and their structure was studied by Fourier Transform Infrared (FT-IR) and Raman spectroscopy. Both spectroscopy analysis of the sample revealed vibration mode related to the characteristic phosphate bonds and borate bonds especially P-O-P, O-P-O ,P-O-B, BO3and BO4. Structural studies were devoted to the investigation of changes in boron coordination in the dependence on changes in B2O3or P2O5ratio in the borophosphate glasses. The decrease in the strength of the vibrations of the non-bridging PO2groups seems to indicate a progressive increase in the connectivity of the glass with increasing B2O3content. It was likely that this connectivity was due to the formation of P-O-B links at 890 cm-1, which replaced the vibration mode P-O-P. The increasing of B2O3content and decreasing the P2O5content causes the boron coordination changes from trigonal to tetrahedral and the basic units change from BO3to BO4. Overall, the high frequency bands corresponding to stretching vibration become broader, less distinct and overlap each other with an increasing B2O3content and decreasing P2O5content.

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UV radiation and the reaction between ammonium and thiocyanate under prebiotic chemistry conditions

Journal of the Serbian Chemical Society ◽

10.2298/jsc100219112s ◽

2010 ◽

Vol 75 (10) ◽

pp. 1381-1389 ◽

Cited By ~ 7

Author(s):

Santana de ◽

Leidimara Pelisson ◽

Diogo Janiaski ◽

Cássia Zaia ◽

Dimas Zaia

Keyword(s):

Uv Radiation ◽

Prebiotic Chemistry ◽

Ammonium Thiocyanate ◽

Nitrogen Atmosphere ◽

Primitive Earth ◽

Ph Values ◽

Ft Ir ◽

Uv Lamp ◽

Hydrolysis Of ◽

Ft Ir Spectroscopy

The reaction between ammonium and thiocyanate under prebiotic chemistry conditions was studied using FT-IR spectroscopy. Ammonium thiocyanate (1.0 10-3 mol L-1) was dissolved in sodium chloride solution (28.57 g L-1) at two different pH values (5.30 and 7.20). FT-IR results showed that it was possible that some compound that resembles dithiooxamides was synthesized when samples of ammonium thiocyanate were exposed to UV radiation under a regular atmosphere, as UV radiation in the presence of oxygen leads to the formation of perchlorate ions (ClO4-) due to the presence of Cl- ions as well. After acid hydrolysis of the samples of ammonium thiocyanate irradiated under a nitrogen atmosphere, yellow and white compounds were obtained, which could not be identified. These results were different from those reported in the literature, where other authors found methionine. However, they used higher concentrations of ammonium thiocyanate and a different type of UV lamp. On the other hand, in the present study, a lower concentration of ammonium thiocyanate was used, which probably resembled more the concentration of ammonium thiocyanate of primitive earth.

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Chemical constituents of Algerian mandarin (Citrus reticulata) essential oil by GC-MS and FT-IR analysis

Current Issues in Pharmacy and Medical Sciences ◽

10.2478/cipms-2020-0032 ◽

2020 ◽

Vol 33 (4) ◽

pp. 197-201

Author(s):

Hicham Boughendjioua ◽

Nour El Houda Mezedjeri ◽

Ilhem Idjouadiene

Keyword(s):

Essential Oil ◽

Biological Activities ◽

Chemical Constituents ◽

Complex Mixture ◽

Citrus Reticulata ◽

Qualitative And Quantitative Analysis ◽

Spectroscopy Analysis ◽

Qualitative And Quantitative ◽

Ft Ir ◽

Ir Analysis

Abstract Medicinal plants are potential sources of natural compounds with biological activities and therefore attract the attention of researchers worldwide. Citrus oils are a complex mixture of more than a hundred components of differing chemical natures. Qualitative and quantitative analysis by gas chromatography coupled with mass spectrometry (GCMS) of the Citrus reticulata essential oil collected from El Hadaïk, Skikda City (Algeria), identified 28 compounds representing a total of 99.41%. The essential oil is constituted mainly of: D-Limonene (85.10%), Sabinene (2.49%), Linalyl acetate (2.00%), Copaene (1.80%) et α-Pinene (1.75%) totaling approximately 93.14%. The essential oil was also analyzed by Fourier transform infrared spectroscopy analysis (FTIR). FTIR spectroscopy allowed us to identify 10 volatile compounds and indicated that the functional groups of the essential oils are C-H (Alkene), C-H (aromatic) and C=C. The obtained results have shown that the essential oil can be fully utilized for pharmacy, cosmetology and industry.

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SINTESIS SURFAKTAN ALKIL POLIGLIKOSIDA DARI GLUKOSA DAN DODEKANOL DENGAN KATALIS ASAM

Jurnal Teknik Kimia USU ◽

10.32734/jtk.v1i1.1398 ◽

2012 ◽

Vol 1 (1) ◽

pp. 5-9

Author(s):

Anastasia Wulan Pratidina Swasono ◽

Putri Dei Elvarosa Sianturi ◽

Zuhrina Masyithah

Keyword(s):

Surface Tension ◽

Hydrochloric Acid ◽

Ir Spectroscopy ◽

Critical Micelle Concentration ◽

Fatty Alcohol ◽

Catalyst Concentration ◽

Molar Ratio ◽

Spectroscopy Analysis ◽

Ft Ir ◽

Ft Ir Spectroscopy

Alkyl polyglicoside (APG) is an enviromentally friendly product non-ionic surfactact and biodegradable product that can be obtained by reacting glucose and fatty alcohol. The purpose of this study was to know the manufacture of surfactant alkyl polyglicoside by using glucose and dodecanol, and also to know the effect of catalyst concentration and molar ratio glucose and dodecanol: 1:1; 1:2: 2:1 (mol/mol), catalyst consentration of hydrochloric acid: 0.3 M; 0,4 M; 0,5 M; 0,6 M at temperature 100 0C. The analysis in this research using FT-IR spectroscopy, analysis of surface tension (Critical Micelle Concentration) and HLB values (Hidrophylic-Lipophylic Balance). The best catalyst concentration at synthesis of alkyl polyglicoside is 0.6 M, the largest surface tension (CMC) at ratio glucose and dodecanol 2:1 is 70.7945% and the highest HLB value is 7.31 in comparison of glucose and dodecanol 2:1.

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Synthesis of BaTi5O11 by an aqueous co-precipitation method via stable organic titanate precursor

Journal of the Serbian Chemical Society ◽

10.2298/jsc200706014a ◽

2021 ◽

pp. 14-14

Author(s):

Pelin Aktaş

Keyword(s):

Aqueous Media ◽

Average Crystallite Size ◽

Phase Evolution ◽

Precipitation Method ◽

X Ray Diffraction ◽

Spectroscopy Analysis ◽

X Ray ◽

Ft Ir ◽

Scherrer Formula ◽

Co Precipitation

BaTi5O11 has been widely researched due to its unique microwave properties. Conventionally it is challenging to obtain this compound as a single phase. The BaTi5O11 was synthesized via co-precipitation technique using an aqueous solution of titanium(IV)(triethanolaminato) isopropoxide, barium nitrate and ammonia as precursors which are stable in an aqueous media. The phase evolution, purity, and structure were identified by X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive X-ray (EDX) spectroscopy analysis. The desired BaTi5O11 structure was obtained by calcination at 900?C. Furthermore, the structure is characterized by TGA, FT-IR and Raman studies. The study showed that the particles were between 80 and 120 nm in size and the average crystallite size was determined from the Scherrer formula as 68.1 nm at 900?C.

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