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Rahmat E, Yu JS, Lee BS, Lee J, Ban Y, Yim NH, Park JH, Kang CH, Kim KH, Kang Y. Secondary metabolites and transcriptomic analysis of novel pulcherrimin producer Metschnikowia persimmonesis KIOM G15050: A potent and safe food biocontrol agent. Heliyon 2024; 10:e28464. [PMID: 38571591 PMCID: PMC10988027 DOI: 10.1016/j.heliyon.2024.e28464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 03/18/2024] [Accepted: 03/19/2024] [Indexed: 04/05/2024] Open
Abstract
Metschnikowia persimmonesis, a novel endophytic yeast strain isolated from Diospyros kaki calyx, possesses strong antimicrobial activity. We investigated its potential use as an environmentally safe food biocontrol agent through genomics, transcriptomics, and metabolomics. Secondary metabolites were isolated from M. persimmonesis, followed by chemical structure elucidation, PUL gene cluster identification, and RNA sequencing. Pulcherrimin was isolated using 2 M NaOH, its structure was confirmed, and the yield was quantified. Biocontrol efficacy of M. persimmonesis on persimmon fruits and calyx was evaluated by assessing lesion diameter and disease incidence. Following compounds were isolated from M. persimmonesis co-culture with Botrytis cinerea and Fusarium oxysporum: fusaric acid, benzoic acid, benzeneacetic acid, 4-hydroxybenzeneacetic acid, 4-(-2-hydoxyethyl)-benzoic acid, cyclo (Leu-Leu), benzenemethanol, 4-hydroxy-benzaldehide, 2-hydroxy-4-methoxy-benzoic acid, 4-hydroxy-benzoic acid, lumichrome, heptadecanoic acid, and nonadecanoic acid. Exposing M. persimmonesis to different growth media conditions (with or without sugar) resulted in the isolation of five compounds: Tyrosol, Cyclo (Pro-Val), cyclo(L-Pro-L-Tyr), cyclo(Leu-Leu), and cyclo(l-tyrosilylicine). Differentially expressed gene analysis revealed 3264 genes that were significantly expressed (fold change ≥2 and p-value ≤0.05) during M. persimmonesis growth in different media, of which only 270 (8.27%) showed altered expression in all sample combinations with Luria-Bertani Agar as control. Minimal media with ferric ions and tween-80 triggered the most gene expression changes, with the highest levels of PUL gene expression and pulcherrimin yield (262.166 mg/L) among all media treatments. M. persimmonesis also produced a higher amount of pulcherrimin (209.733 mg/L) than Metschnikowia pulcherrima (152.8 mg/L). M. persimmonesis inhibited the growth of Fusarium oxysporum in persimmon fruit and calyx. Toxicity evaluation of M. persimmonesis extracts showed no harmful effects on the liver and mitochondria of zebrafish, and no potential risk of cardiotoxicity in hERG-HEK293 cell lines. Thus, M. persimmonesis can be commercialized as a potent and safe biocontrol agent for preserving food products.
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Affiliation(s)
- Endang Rahmat
- Biotechnology Department, Faculty of Engineering, Bina Nusantara University, Jakarta, 11480, Indonesia
| | - Jae Sik Yu
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea
- Department of Integrative Biological Sciences and Industry, Sejong University, Seoul, 05006, Republic of Korea
| | - Bum Soo Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Jiyoung Lee
- University of Science & Technology (UST), KIOM Campus, Korean Convergence Medicine Major, Daejeon, 34054, Republic of Korea
- Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Jeongeup, 56212, Republic of Korea
| | - Yeongjun Ban
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, 111 Geonjae-ro, Naju-si, Jeollanam-do, 58245, Republic of Korea
| | - Nam-Hui Yim
- Korean Medicine Application Center, Korea Institute of Oriental Medicine 70 Cheomdan-ro, Dong-gu, Daegu, 41062, Republic of Korea
| | - Jeong Hwan Park
- KM Data Division, Korea Institute of Oriental Medicine (KIOM), 1672 Yuseongdae-ro, Yuseong-gu, Daejeon, 34054, Republic of Korea
| | - Chang Ho Kang
- Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, Gyeongnam, 52828, Republic of Korea
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Youngmin Kang
- University of Science & Technology (UST), KIOM Campus, Korean Convergence Medicine Major, Daejeon, 34054, Republic of Korea
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, 111 Geonjae-ro, Naju-si, Jeollanam-do, 58245, Republic of Korea
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Shi S, Cheng J, Ahmad N, Zhao W, Tian M, Yuan Z, Li C, Zhao C. Effects of potential allelochemicals in a water extract of Abutilon theophrasti Medik. on germination and growth of Glycine max L., Triticum aestivum L., and Zea mays L. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:2155-2165. [PMID: 36369956 DOI: 10.1002/jsfa.12315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 11/01/2022] [Accepted: 11/12/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Velvetleaf (Abutilon theophrasti Medik.), primarily a cropland weed, exerts adverse impacts on the productivity of various crops, including soybean (Glycine max L.), wheat (Triticum aestivum L.), and maize (Zea mays L.), by hindering their vegetative growth. However, the interference mechanism of velvetleaf on the three crops remains unclear. RESULTS The inhibitory effect of velvetleaf water extract on the germination and growth of soybean, wheat, and maize was determined in pot experiments and field trials. Four phenolic acids were identified as allelochemicals: protocatechuic acid (PA), gallic acid (GA), chlorogenic acid (CHA), and vanillic acid (VA). These allelochemicals were detected in different parts (leaves, roots, and stems) of velvetleaf, and in the rhizosphere soil of tested crops over the range of 1.19-556.23 μm kg-1 . These allelochemicals were administered in approximate concentrations as in velvetleaf roots and rhizosphere soil, and their effects varied with crop species and velvetleaf parts. The allelochemicals generally had low-dose stimulation and high-dose inhibition effects on the growth of soybean, wheat, and maize. Furthermore, the biomass distribution of these crops was affected by allelochemicals in the soil. In field trials, the allelochemicals significantly (P < 0.05) inhibited the growth of all tested crops over the whole growth period, and PA showed a significant (P < 0.05) inhibitory effect on the yield of soybean, wheat, and maize. CONCLUSION GA, PA, CHA, and VA in velvetleaf aqueous extracts were identified as allelochemicals that play an inhibitory role on three crops. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Sen Shi
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, China
- Engineering Research Center of Forest Bio-preparation, Ministry of Education, Northeast Forestry University, Harbin, China
- Heilongjiang Provincial Key Laboratory of ecological utilization of Forestry-based active substances, Harbin, China
| | - Jiabo Cheng
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, China
- Engineering Research Center of Forest Bio-preparation, Ministry of Education, Northeast Forestry University, Harbin, China
- Heilongjiang Provincial Key Laboratory of ecological utilization of Forestry-based active substances, Harbin, China
| | - Naveed Ahmad
- Department of Chemistry, Division of Science and Technology, University of Education, Lahore, Pakistan
| | - Wenyan Zhao
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, China
- Engineering Research Center of Forest Bio-preparation, Ministry of Education, Northeast Forestry University, Harbin, China
- Heilongjiang Provincial Key Laboratory of ecological utilization of Forestry-based active substances, Harbin, China
| | - Mengfei Tian
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, China
- Engineering Research Center of Forest Bio-preparation, Ministry of Education, Northeast Forestry University, Harbin, China
- Heilongjiang Provincial Key Laboratory of ecological utilization of Forestry-based active substances, Harbin, China
| | - Zhanyu Yuan
- Hisun Pharmaceutical (Hangzhou) Co., Ltd, Hangzhou, China
| | - Chunying Li
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, China
- Engineering Research Center of Forest Bio-preparation, Ministry of Education, Northeast Forestry University, Harbin, China
- Heilongjiang Provincial Key Laboratory of ecological utilization of Forestry-based active substances, Harbin, China
| | - Chunjian Zhao
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, China
- Engineering Research Center of Forest Bio-preparation, Ministry of Education, Northeast Forestry University, Harbin, China
- Heilongjiang Provincial Key Laboratory of ecological utilization of Forestry-based active substances, Harbin, China
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Three metal organic frameworks of 2,4-dihydroxybenzoic acid: Synthesis, crystal structure and thermal behavior. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132943] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Yan R, Yang W, You D, Yang H, Han C. Photoinduced evolution of optical properties and compositions of methoxyphenols by Fe(III)-carboxylates complexes in atmospheric aqueous phase. CHEMOSPHERE 2022; 295:133860. [PMID: 35124090 DOI: 10.1016/j.chemosphere.2022.133860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 01/27/2022] [Accepted: 02/01/2022] [Indexed: 06/14/2023]
Abstract
The changes in optical properties and chemical compositions of methoxyphenols, which acted as an important aromatic compound from the biomass burning, were investigated in the presence of Fe(III)-carboxylates under aqueous phase conditions. The light was confirmed to be a key factor for stimulating the reaction of methoxyphenols and Fe(III)-carboxylates. The photoinduced evolution of optical properties of methoxyphenols was dependent on various factors, including irradiation intensity, types of carboxylates, dissolved oxygen and pH. The changes in the mass absorption efficiency at 306 nm (MAE306) positively relied on irradiation intensity and dissolved oxygen. The acceleration effects of carboxylates on the decreases in MAE306 of methoxyphenols followed the order of oxalate > citrate > malonate. The change amplitude of MAE306 decreased with an increasing pH (3.5-9), while that of the mass absorption efficiency at 364 nm (MAE364) increased with pH ranging from 3.5 to 7. The compositional evolutions of methoxyphenols by the photochemical aging were analyzed with the attenuated total reflection infrared spectroscopy (ATR-IR), confirming the decrease of CO groups and the increase of O-H and C-O groups. The photochemical reaction pathways of methoxyphenols with Fe(III)-carboxylates were proposed according to optical properties and compositions measurements.
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Affiliation(s)
- Ran Yan
- School of Metallurgy, Northeastern University, Shenyang, 110819, China
| | - Wangjin Yang
- School of Metallurgy, Northeastern University, Shenyang, 110819, China
| | - Di You
- School of Metallurgy, Northeastern University, Shenyang, 110819, China
| | - Hongxing Yang
- School of Metallurgy, Northeastern University, Shenyang, 110819, China
| | - Chong Han
- School of Metallurgy, Northeastern University, Shenyang, 110819, China.
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Kaliammal R, Parvathy G, Maheshwaran G, Devi VK, Kumar MK, Sankaranarayanan K, Sudhahar S. Experimental and theoretical studies on new 2-amino-6-methylpyridinium 2,4-dihydroxybenzoate monohydrate organic single crystal for second order nonlinear optical applications. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Catalytic Pyrolysis of Lignin Model Compounds (Pyrocatechol, Guaiacol, Vanillic and Ferulic Acids) over Nanoceria Catalyst for Biomass Conversion. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11167205] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Understanding the mechanisms of thermal transformations of model lignin compounds (MLC) over nanoscale catalysts is important for improving the technologic processes occurring in the pyrolytic conversion of lignocellulose biomass into biofuels and value-added chemicals. Herein, we investigate catalytic pyrolysis of MLC (pyrocatechol (P), guaiacol (G), ferulic (FA), and vanillic acids (VA)) over nanoceria using FT-IR spectroscopy, temperature-programmed desorption mass spectrometry (TPD MS), and thermogravimetric analysis (DTG/DTA/TG). FT-IR spectroscopic studies indicate that the active groups of aromatic rings of P, G, VA, and FA as well as carboxylate groups of VA and FA are involved in the interaction with nanoceria surface. We explore the general transformation mechanisms of different surface complexes and identify their decomposition products. We demonstrate that decomposition of carboxylate acid complexes occurs by decarboxylation. When FA is used as a precursor, this reaction generates 4-vinylguaiacol. Complexes of VA and FA formed through both active groups of the aromatic ring and decompose on the CeO2 surface to generate hydroxybenzene. The formation of alkylated products accompanies catalytic pyrolysis of acids due to processes of transalkylation on the surface.
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Dikmen G. Investigation of non-covalent complex formation between 2-(4-hydroxyphenylazo) benzoic acid and α-Cyclodextrin in solid and solution forms. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116278] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Beatrice ML, Delphine SM, Amalanathan M, Mary MSM, Robert HM, Mol KT. Molecular structure, spectroscopic, Fukui function, RDG, anti-microbial and molecular docking analysis of higher concentration star anise content compound methyl 4-methoxybenzoate-DFT study. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Santos RA, Souza Filho APS, Cantanhede Filho AJ, Guilhon GMSP, Santos LS. Analysis of phenolic compounds from cowpea (Vigna unguiculata) by HPLC-DAD-MS/MS. BRAZILIAN JOURNAL OF FOOD TECHNOLOGY 2021. [DOI: 10.1590/1981-6723.07720] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract Vigna unguiculata (L.) Walp (cowpea), Fabaceae family and also known as Leguminosae, is an important vegetable used as food in tropical regions, especially in Africa, South America and Asia countries. Phenolic compounds are associated with important biological properties and their occurrence in edible plants may result in a highly functional food. Chromatographic profiles of phenolic compounds were investigated in two cowpea cultivars, such as tracuateua (CT) and caldeirão (CC), and both were cultivated using High Performance Liquid Chromatography (HPLC) coupled to Mass Spectrometry (MS) (HPLC-DAD/MS/MS). The flavonols quercetin and kaempferol, the phenolic acids, p-coumaric and protocatechuic acid (PCA) were identified in cowpea (CC), while the phenolic acids, gallic and protocatechuic acids, were identified in the cowpea (CT). These phenolic compounds ratify cowpea as a functional and bioactive food, ensuring a healthy diet.
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Pal R, Jelsch C, Malaspina LA, Edwards AJ, Murshed MM, Grabowsky S. syn and anti polymorphs of 2,6-dimethoxy benzoic acid and its molecular and ionic cocrystals: Structural analysis and energetic perspective. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128721] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Xiao L, Wang XY, Yang NQ, Xia-Hou ZR, Yang P, Luo WL, Wang YS, Yang JH. Chemical Constituents of Litsea szemaois. Chem Nat Compd 2020. [DOI: 10.1007/s10600-020-03194-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Zhang T, Yang W, Han C, Yang H, Xue X. Heterogeneous reaction of ozone with syringic acid: Uptake of O 3 and changes in the composition and optical property of syringic acid. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 257:113632. [PMID: 31785942 DOI: 10.1016/j.envpol.2019.113632] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 11/08/2019] [Accepted: 11/13/2019] [Indexed: 06/10/2023]
Abstract
Syringic acid, which is a typical methoxyphenol emitted from wood combustion, can provide heterogeneous reaction sites for gaseous active components, influencing the concentrations of trace gases and the compositions of syringic acid. The heterogeneous uptake of O3 on syringic acid was investigated using a flow tube reactor under ambient pressure. The initial uptake coefficient (γi) and the steady-state uptake coefficient (γss) of O3 linearly increased with syringic acid mass (0-0.16 μg cm-2) and temperature (278-328 K), while they decreased with increasing the O3 concentration and the O2 content. The γi was independent of relative humidity (20%-70%), whereas γss decreased with relative humidity (7%-70%). The compositional changes of syringic acid by the ozonization were analyzed by the Fourier transform infrared spectrometer (FT-IR) and the gas chromatography-mass spectrometry (GC-MS), confirming the generation of 2,6-dimethoxy-1,4-benzoquinone. In addition, compared to that of fresh syringic acid, the mass absorption efficiency of syringic acid aged by O3 exhibited an increase in the range of 290-320 nm.
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Affiliation(s)
- Tingting Zhang
- School of Metallurgy, Northeastern University, Shenyang, 110819, China
| | - Wangjin Yang
- School of Metallurgy, Northeastern University, Shenyang, 110819, China
| | - Chong Han
- School of Metallurgy, Northeastern University, Shenyang, 110819, China.
| | - He Yang
- School of Metallurgy, Northeastern University, Shenyang, 110819, China
| | - Xiangxin Xue
- School of Metallurgy, Northeastern University, Shenyang, 110819, China
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Subhapriya G, Kalyanaraman S, Surumbarkuzhali N, Vijayalakshmi S, Krishnakumar V, Gandhimathi S. Intermolecular hydrogen bonding, structural and vibrational assignments of 2, 3, 4, 5-tetrafluorobenzoic acid using density functional theory. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.09.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Zhuravlev KP, Tsaryuk VI, Vologzhanina AV, Gawryszewska PP, Kudryashova VA, Klemenkova ZS. Crystal Structures of New Lanthanide Hydroxybenzoates and Different Roles of LMCT State in the Excitation Energy Transfer to Eu3+Ions. ChemistrySelect 2016. [DOI: 10.1002/slct.201600618] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Konstantin P. Zhuravlev
- V.A. Kotelnikov Institute of Radioengineering and Electronics; Russian Academy of Sciences; 1 Vvedenskii sq. Fryazino Moscow reg. 141190 Russia
| | - Vera I. Tsaryuk
- V.A. Kotelnikov Institute of Radioengineering and Electronics; Russian Academy of Sciences; 1 Vvedenskii sq. Fryazino Moscow reg. 141190 Russia
| | - Anna V. Vologzhanina
- A.N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 28 Vavilov st. Moscow 119991 Russia
| | - Paula P. Gawryszewska
- Faculty of Chemistry; University of Wrocław; 14 F. Joliot-Curie str. Wrocław 50-383 Poland
| | - Valentina A. Kudryashova
- V.A. Kotelnikov Institute of Radioengineering and Electronics; Russian Academy of Sciences; 1 Vvedenskii sq. Fryazino Moscow reg. 141190 Russia
| | - Zinaida S. Klemenkova
- A.N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 28 Vavilov st. Moscow 119991 Russia
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Tao Y, Han L, Han Y, Liu Z. A combined experimental and theoretical analysis on molecular structure and vibrational spectra of 2,4-dihydroxybenzoic acid. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 137:1078-1085. [PMID: 25300039 DOI: 10.1016/j.saa.2014.08.151] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2014] [Revised: 07/24/2014] [Accepted: 08/31/2014] [Indexed: 06/04/2023]
Abstract
The FT-IR and FT-Raman spectra of 2,4-dihydroxybenzoic acid (2,4-DHBA) in the solid phase have been recorded in the regions 4000-400 cm(-1) and 3700-100 cm(-1), respectively. The total energies of sixteen stable conformers for 2,4-DHBA have been calculated by density functional theory (DFT) using the B3LYP method with 6-311++G (d, p) basis set, and the C1 conformer with the lowest energy was obtained, the geometrical parameters between X-ray experiment diffraction and DFT calculation show good consistency. Furthermore, the vibrational frequencies of 2,4-DHBA were computed, and the detailed analysis of vibrational spectra was made on the basis of the potential energy distribution (PED) by combining experimental with theoretical data. In addition, frontier molecular orbitals, atomic charge distribution and molecular electrostatic potential (MEP) were also given.
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Affiliation(s)
- Yaping Tao
- College of Physics and Electronic Information, Luoyang Normal University, Luoyang 471022, China
| | - Ligang Han
- College of Physics and Electronic Information, Luoyang Normal University, Luoyang 471022, China
| | - Yunxia Han
- College of Physics and Electronic Information, Luoyang Normal University, Luoyang 471022, China
| | - Zhaojun Liu
- College of Physics and Electronic Information, Luoyang Normal University, Luoyang 471022, China.
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Karabacak M, Sinha L, Prasad O, Asiri AM, Cinar M, Shukla VK. FT-IR, FT-Raman, NMR, UV and quantum chemical studies on monomeric and dimeric conformations of 3,5-dimethyl-4-methoxybenzoic acid. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 123:352-362. [PMID: 24412788 DOI: 10.1016/j.saa.2013.12.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 12/05/2013] [Accepted: 12/09/2013] [Indexed: 06/03/2023]
Abstract
Extensive spectroscopic investigations along with theoretical quantum chemical studies on 3,5-dimethyl-4-methoxybenzoic acid (DMMBA) have been consummated. The fundamental vibrational transitions were addressed by experimental FT-IR (4000-400cm(-1)) and FT-Raman (4000-10cm(-1)) techniques and density functional calculations at B3LYP/6-311++G(d,p) and B3LYP/6-311++G(df,pd) levels of theory. The (1)H, (13)C and DEPT 135 NMR spectra of studied compound were recorded in deuterated dimethylsulfoxide (DMSO-d6), and compared with computed data obtained by using gauge including atomic orbital (GIAO) method. The electronic absorption spectra in methanol and ethanol solution were evaluated in the range of 200-400nm, and TD-DFT method was chosen for computational study. The spectroscopic and theoretical results were compared to the corresponding properties for monomer and dimer structures for the most stable conformer. Stability of the molecule arising from hyperconjugative interactions and charge delocalization has been analyzed using natural bond orbital (NBO) analysis. Moreover, the thermodynamic and nonlinear optical (NLO) properties were evaluated.
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Affiliation(s)
- Mehmet Karabacak
- Department of Mechatronics Engineering, H.F.T. Technology Faculty, Celal Bayar University, Turgutlu, Manisa, Turkey.
| | - Leena Sinha
- Department of Physics, University of Lucknow, Lucknow, India
| | - Onkar Prasad
- Department of Physics, University of Lucknow, Lucknow, India
| | - Abdullah M Asiri
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia; Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mehmet Cinar
- Department of Science Education, Bayburt University, Bayburt, Turkey
| | - Vikas K Shukla
- Department of Physics, University of Lucknow, Lucknow, India
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Samsonowicz M. Molecular structure of phenyl- and phenoxyacetic acids--spectroscopic and theoretical study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 118:1086-1097. [PMID: 24161872 DOI: 10.1016/j.saa.2013.09.127] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2013] [Revised: 09/17/2013] [Accepted: 09/29/2013] [Indexed: 06/02/2023]
Abstract
The FT-IR, FT-Raman and (1)H and (13)C NMR spectra were recorded for phenyl- and phenoxyacetic acids in comparison with benzoic acid molecule. The density functional hybrid method (B3LYP/6-311++G(**)) was used to calculate optimized geometrical structures of studied compounds. The atomic charges were calculated by NBO (natural bond orbital) methods. Aromaticity indices, dipole moments and energies as well as the wavenumbers and intensities of IR spectra were calculated. The chemical shifts in NMR spectra using the gauge independent atomic orbital (GIAO) method were also analyzed. The theoretical parameters were compared to experimental characteristic of phenyl- and phenoxyacetic acids. The study of HOMO, LUMO and NBO analyses have been used to elucidate charge transfer within the molecule of title compounds. Molecular electrostatic potential (MEP) was also calculated.
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Affiliation(s)
- M Samsonowicz
- Division of Chemistry, Bialystok University of Technology, 15-435 Białystok, Zamenhofa 29, Poland.
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