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Dong S, Li R, Zhou K, Wei Y, Li J, Cheng M, Chen P, Hu X. Response of humification process to fungal inoculant in corn straw composting with two different kinds of nitrogen sources. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 946:174461. [PMID: 38964380 DOI: 10.1016/j.scitotenv.2024.174461] [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: 04/23/2024] [Revised: 06/24/2024] [Accepted: 07/01/2024] [Indexed: 07/06/2024]
Abstract
Inoculation is widely used in composting to improve the mineralization process, however, the link of fungal inoculant to humification is rarely proposed. The objective of this study was to investigate the effect of compound fungal inoculation on humification process and fungal community dynamics in corn straw composting with two different kinds of nitrogen sources [pig manure (PM) and urea (UR)]. Structural equation modeling and random forest analysis were conducted to identify key fungi and explore the fungi-mediated humification mechanism. Results showed that fungal inoculation increased the content of humic acids in PM and UR by 71.76 % and 53.01 % compared to control, respectively. High-throughput sequencing indicated that there were more key fungal genera for lignin degradation in PM especially in the later stage of composting, but a more complex fungal (genera) connections with lower humification degree was found in UR. Network analysis and random forest suggested that inoculation promoted dominant genus such as Coprinus, affecting lignocellulose degradation. Structural equation modeling indicated that fungal inoculation could promote humification by direct pathway based on lignin degradation and indirect pathway based on stimulating the indigenous microbes such as Scedosporiu and Coprinus for the accumulation of carboxyl and polyphenol hydroxyl groups. In summary, fungal inoculation is suitable to be used combining with complex nitrogen source such as pig manure in straw composting.
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Affiliation(s)
| | - Ruoqi Li
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Suzhou 215128, China
| | - Kaiyun Zhou
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Suzhou 215128, China
| | - Yuquan Wei
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Suzhou 215128, China.
| | - Jun Li
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Suzhou 215128, China
| | - Meidi Cheng
- College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
| | - Peizhen Chen
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Xiaomei Hu
- College of Life Science, Northeast Agricultural University, Harbin 150030, China.
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Zhu X, Beiyuan J, Ju W, Qiu T, Cui Q, Chen L, Chao H, Shen Y, Fang L. Inoculation with Bacillus thuringiensis reduces uptake and translocation of Pb/Cd in soil-wheat system: A life cycle study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 945:174032. [PMID: 38885714 DOI: 10.1016/j.scitotenv.2024.174032] [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: 03/27/2024] [Revised: 05/31/2024] [Accepted: 06/14/2024] [Indexed: 06/20/2024]
Abstract
Microbial inoculation is an important strategy to reduce the supply of heavy metals (HMs) in soil-crop systems. However, the mechanisms of microbial inoculation for the availability of HMs in soil and their accumulation/transfer in crops remain unclear. Here, the inhibitory effect of inoculation with Bacillus thuringiensis on the migration and accumulation of Pb/Cd in the soil-wheat system during the whole growth period was investigated by pot experiments. The results showed that inoculation with Bacillus thuringiensis increased soil pH and available nutrients (including carbon, nitrogen, and phosphorus), and enhanced the activities of nutrient-acquiring enzymes. Dominance analysis showed that dissolved organic matter (DOM) is the key factor affecting the availability of HMs. The content of colored spectral clusters and humification characteristics of DOM were significantly improved by inoculation, which is conducive to reducing the availability of Pb/Cd, especially during the flowering stage, the decrease was 12.8 %. Inoculation decreased Pb/Cd accumulation in the shoot and the transfer from root to shoot, with the greatest decreases at the jointing and seedling stages (27.0-34.1 % and 6.9-11.8 %), respectively. At the maturity stage, inoculation reduced the Pb/Cd accumulation in grain (12.9-14.7 %) and human health risk (4.1-13.2 %). The results of Pearson correlation analysis showed that the availability of Pb/Cd was positively correlated with the humification of DOM. Least square path model analysis showed that Bacillus thuringiensis could significantly reduce Pb/Cd accumulation in the grain and human health risks by regulating DOM spectral characteristics, the availability of HMs in soil and metals accumulation/transport in wheat at different growth stages. This study revealed the inhibition mechanism of Bacillus thuringiensis on migration of Pb/Cd in a soil-wheat system from a viewpoint of a full life cycle, which offers a valuable reference for the in-situ remediation of HM-contaminated soil and the safe production of food crops in field.
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Affiliation(s)
- Xiaozhen Zhu
- Key Laboratory of Green Utilization of Critical Non-metallic Mineral Resources, Ministry of Education, Wuhan University of Technology, Wuhan 430070, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, China
| | - Jingzi Beiyuan
- School of Environmental and Chemical Engineering, Foshan University, Foshan 528000, China
| | - Wenliang Ju
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Tianyi Qiu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, China
| | - Qingliang Cui
- Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China
| | - Li Chen
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, China
| | - Herong Chao
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, China
| | - Yufang Shen
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, China
| | - Linchuan Fang
- Key Laboratory of Green Utilization of Critical Non-metallic Mineral Resources, Ministry of Education, Wuhan University of Technology, Wuhan 430070, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, China.
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Li N, Ma H, Wang G, Ma X, Deng J, Yuan S. Efficient extraction and formation mechanism of fulvic acid from lignite: Experimental and DFT studies. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 365:121650. [PMID: 38968881 DOI: 10.1016/j.jenvman.2024.121650] [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: 03/08/2024] [Revised: 06/18/2024] [Accepted: 06/28/2024] [Indexed: 07/07/2024]
Abstract
Enhancing the coal-based fulvic acid (FA) yield through the effect of oxidation methods was of great importance. However, the realization of an efficient and environmentally friendly method for the preparation of FA, along with understanding of its formation mechanism, remains imperative. Herein, coal-based FA was prepared by oxidizing lignite with H2O2 and NaOH/KOH. The experimental data showed that ML lignite was pickled with HCl, metal ions such as iron, aluminum, and calcium can be removed, and this lignite is used as raw material, the reaction time was 150 min, the reaction temperature was 50 °C, and the volume ratio of H2O2 (30%) to KOH (3 mol/L) was 1:1, the effect of H2O2 and KOH on FA extraction was the best. The coal-based FA yield could reach 60.49%. The addition of silicone defoaming agent during the experiment resulted in a significant diminished the presence of bubbles and prevent the production of CO2. A decrease in N2 content was detected by GC. The FTIR, XPS, Py-GC/MS and other characterization results showed that FA has more polar functional groups (-COOH, -OH), and it contains more O-CO structure. Consequently, a greater quantity of FA molecules is generated during the reaction process. Moreover, the partial Gibbs free energies during the formation process of coal-based FA were calculated by density-functional theory (DFT). The highest energy required for free radicals was found to be between 1.3 and 1.7 eV. This study would provide theoretical support for exploring the FA formation process and the promotion of lignite humification by adding H2O2 or alkali to lignite.
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Affiliation(s)
- Na Li
- School of Chemical Science and Engineering, Key Laboratory of Medicinal Chemistry for Natural Resource-Ministry of Education, National Demonstration Center for Experimental Chemistry and Chemical Engineering Education, Yunnan Key Laboratory of Carbon Neutrality and Green Low-carbon Technologies, Yunnan University, 2 North Cuihu Road, 650091, Kunming, Yunnan, China.
| | - Hang Ma
- R&D Center. Yunnan Yuntianhua CO., LTD, NO.1417 Dian Lake Road, 650228, Kunming, China.
| | - Guodong Wang
- R&D Center. Yunnan Yuntianhua CO., LTD, NO.1417 Dian Lake Road, 650228, Kunming, China.
| | - Xunmeng Ma
- School of Chemical Science and Engineering, Key Laboratory of Medicinal Chemistry for Natural Resource-Ministry of Education, National Demonstration Center for Experimental Chemistry and Chemical Engineering Education, Yunnan Key Laboratory of Carbon Neutrality and Green Low-carbon Technologies, Yunnan University, 2 North Cuihu Road, 650091, Kunming, Yunnan, China.
| | - Jin Deng
- School of Chemical Science and Engineering, Key Laboratory of Medicinal Chemistry for Natural Resource-Ministry of Education, National Demonstration Center for Experimental Chemistry and Chemical Engineering Education, Yunnan Key Laboratory of Carbon Neutrality and Green Low-carbon Technologies, Yunnan University, 2 North Cuihu Road, 650091, Kunming, Yunnan, China.
| | - Shenfu Yuan
- School of Chemical Science and Engineering, Key Laboratory of Medicinal Chemistry for Natural Resource-Ministry of Education, National Demonstration Center for Experimental Chemistry and Chemical Engineering Education, Yunnan Key Laboratory of Carbon Neutrality and Green Low-carbon Technologies, Yunnan University, 2 North Cuihu Road, 650091, Kunming, Yunnan, China.
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Constantino IC, Bento LR, Santos VS, da Silva LS, Tadini AM, Mounier S, Piccolo A, Spaccini R, Cornélio ML, Paschoal FMM, Junior ÉS, Moreira AB, Bisinoti MC. Seasonal studies of aquatic humic substances from Amazon rivers: characterization and interaction with Cu (II), Fe (II), and Al (III) using EEM-PARAFAC and 2D FTIR correlation analyses. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:595. [PMID: 38833198 DOI: 10.1007/s10661-024-12729-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 05/17/2024] [Indexed: 06/06/2024]
Abstract
Aquatic humic substances (AHS) are defined as an important components of organic matter, being composed as small molecules in a supramolecular structure and can interact with metallic ions, thereby altering the bioavailability of these species. To better understand this behavior, AHS were extracted and characterized from Negro River, located near Manaus city and Carú River, that is situated in Itacoatiara city, an area experiencing increasing anthropogenic actions; both were characterized as blackwater rivers. The AHS were characterized by 13C nuclear magnetic ressonance and thermochemolysis GC-MS to obtain structural characteristics. Interaction studies with Cu (II), Al (III), and Fe (III) were investigated using fluorescence spectroscopy applied to parallel factor analysis (PARAFAC) and two-dimensional correlation spectroscopy with Fourier transform infrared spectroscopy (2D-COS FTIR). The AHS from dry season had more aromatic fractions not derived from lignin and had higher content of alkyls moities from microbial sources and vegetal tissues of autochthonous origin, while AHS isolated in the rainy season showed more metals in its molecular architecture, lignin units, and polysacharide structures. The study showed that AHS composition from rainy season were able to interact with Al (III), Fe (III), and Cu (II). Two fluorescent components were identified as responsible for interaction: C1 (blue-shifted) and C2 (red-shifted). C1 showed higher complexation capacities but with lower complexation stability constants (KML ranged from 0.3 to 7.9 × 105) than C2 (KML ranged from 3.1 to 10.0 × 105). 2D-COS FTIR showed that the COO- and C-O in phenolic were the most important functional groups for interaction with studied metallic ions.
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Affiliation(s)
- Isabela Carreira Constantino
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São Paulo State University (UNESP), São José Do Rio Preto, São Paulo, Brazil
| | - Lucas Raimundo Bento
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São Paulo State University (UNESP), São José Do Rio Preto, São Paulo, Brazil
- The Interdepartmental Research Centre On Nuclear Magnetic Resonance for the Environment, Agroo-Food and New Materials (CERMANU), University of Naples Federico II, Portici, Naples, Italy
| | - Vinicius Sarracini Santos
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São Paulo State University (UNESP), São José Do Rio Preto, São Paulo, Brazil
| | - Leila Soares da Silva
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São Paulo State University (UNESP), São José Do Rio Preto, São Paulo, Brazil
| | | | - Stéphane Mounier
- Mediterranean Institute of Oceanography (MIO), University Toulon, Toulon, France
| | - Alessandro Piccolo
- The Interdepartmental Research Centre On Nuclear Magnetic Resonance for the Environment, Agroo-Food and New Materials (CERMANU), University of Naples Federico II, Portici, Naples, Italy
| | - Riccardo Spaccini
- The Interdepartmental Research Centre On Nuclear Magnetic Resonance for the Environment, Agroo-Food and New Materials (CERMANU), University of Naples Federico II, Portici, Naples, Italy
| | - Marinônio Lopes Cornélio
- Department of Physics, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São Paulo State University (UNESP), São José Do Rio Preto, São Paulo, Brazil
| | | | | | - Altair Benedito Moreira
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São Paulo State University (UNESP), São José Do Rio Preto, São Paulo, Brazil
| | - Márcia Cristina Bisinoti
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São Paulo State University (UNESP), São José Do Rio Preto, São Paulo, Brazil.
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Song Y, Yao S, Li X, Wang T, Jiang X, Bolan N, Warren CR, Northen TR, Chang SX. Soil metabolomics: Deciphering underground metabolic webs in terrestrial ecosystems. ECO-ENVIRONMENT & HEALTH 2024; 3:227-237. [PMID: 38680731 PMCID: PMC11047296 DOI: 10.1016/j.eehl.2024.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 02/05/2024] [Accepted: 03/04/2024] [Indexed: 05/01/2024]
Abstract
Soil metabolomics is an emerging approach for profiling diverse small molecule metabolites, i.e., metabolomes, in the soil. Soil metabolites, including fatty acids, amino acids, lipids, organic acids, sugars, and volatile organic compounds, often contain essential nutrients such as nitrogen, phosphorus, and sulfur and are directly linked to soil biogeochemical cycles driven by soil microorganisms. This paper presents an overview of methods for analyzing soil metabolites and the state-of-the-art of soil metabolomics in relation to soil nutrient cycling. We describe important applications of metabolomics in studying soil carbon cycling and sequestration, and the response of soil organic pools to changing environmental conditions. This includes using metabolomics to provide new insights into the close relationships between soil microbiome and metabolome, as well as responses of soil metabolome to plant and environmental stresses such as soil contamination. We also highlight the advantage of using soil metabolomics to study the biogeochemical cycles of elements and suggest that future research needs to better understand factors driving soil function and health.
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Affiliation(s)
- Yang Song
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shi Yao
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaona Li
- School of Environment and Ecology, Jiangnan University, Wuxi 225127, China
| | - Tao Wang
- Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China
| | - Xin Jiang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Nanthi Bolan
- School of Agriculture and Environment, The University of Western Australia, Nedland, WA-6009, Australia
- The UWA Institute of Agriculture, The University of Western Australia, Nedland, WA-6009, Australia
- Healthy Environments and Lives (HEAL) National Research Network, Australia
| | - Charles R. Warren
- School of Life and Environmental Sciences, University of Sydney, Heydon-Laurence Building A08, NSW 2006, Australia
| | - Trent R. Northen
- Environmental Genomics and System Biology Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, Berkeley, CA 94720, USA
- Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Scott X. Chang
- Department of Renewable Resources, University of Alberta, Edmonton, Alberta T6G 2E3, Canada
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Piccolo A, Drosos M, Nuzzo A, Cozzolino V, Scopa A. Enhanced washing of polycyclic aromatic hydrocarbons from contaminated soils by the empowered surfactant properties of de novo O-alkylated humic matter. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:16995-17004. [PMID: 38329672 PMCID: PMC10894171 DOI: 10.1007/s11356-024-32292-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 01/28/2024] [Indexed: 02/09/2024]
Abstract
Aqueous solutions of humic acid (HA) derivatized by a catalyzed O-alkylation reaction with methyl, pentyl, and benzyl groups at 40, 60, and 80% of total HA acidity were used to wash off polycyclic aromatic hydrocarbons (PAHs) from two contaminated soils. The enhanced surfactant properties enabled the alkylated HA to remove phenanthrene, anthracene, fluoranthene, and pyrene from both soils more extensively than the original unmodified HA, the 60% benzylation generally showing the greatest soil washing efficiency. For both soils, all alkylated HA revealed greater PAH removals than Triton X-100 nonionic surfactant, while the benzylated and methylated HA nearly and fully matched pollutants release by the anionic SDS in the coarse- and fine-textured soils, respectively. A consecutive second washing with 60% benzylated HA removed additional PAHs, in respect to the first washing, from the coarser-textured soil, except for fluoranthene, while removal from the finer-textured soil incremented even more for all PAHs. These findings indicate that the enhanced hydrophobicity obtained by a simple and unexpensive chemical derivatization of a natural humic surfactant can be usefully exploited in the washing of polluted soils, without being toxic to the soil biota and by potentially promoting the subsequent bio-attenuation of organic pollutants.
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Affiliation(s)
- Alessandro Piccolo
- Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055, Portici, Italy.
| | - Marios Drosos
- School of Agricultural, Forestal, Food and Environmental Sciences (SAFE), University of Basilicata, Viale Dell'Ateneo Lucano 10, 85100, Potenza, Italy
| | - Assunta Nuzzo
- Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055, Portici, Italy
| | - Vincenza Cozzolino
- Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055, Portici, Italy
| | - Antonio Scopa
- School of Agricultural, Forestal, Food and Environmental Sciences (SAFE), University of Basilicata, Viale Dell'Ateneo Lucano 10, 85100, Potenza, Italy
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Shi M, Song C, Xie L, Zhang G, Wei Z. Role in aromatic metabolites biodegradation and adverse implication of denitrifying microbiota in kitchen waste composting. ENVIRONMENTAL MICROBIOME 2023; 18:44. [PMID: 37254173 DOI: 10.1186/s40793-023-00496-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 04/21/2023] [Indexed: 06/01/2023]
Abstract
BACKGROUND Understanding the functional diversity, composition, and dynamics of microbiome is critical for quality in composting. Denitrifying microbiota, possessing multiple metabolic pathways simultaneously. Denitrification-based biodegradation of aromatic metabolites has been widely applied in the bioremediation of sediments. However, role in biodegradation of denitrifying microbiota in kitchen waste composting remain unclear. In this study, microbiome and metabolome were used to comprehensively decipher the relationship of denitrifying microbiota and aromatic metabolites, and its implication in kitchen waste (KW) composting. RESULTS This study was investigated by adjusting moisture content 60% as control test (CK), 70% as denitrification test (DE). In addition, one tests referred as DE + C, which received 10% of biochar to amend denitrification. Results indicated the quantities of denitrification genes narG were 1.22 × 108 copies/g in DE at the 55th day, which were significantly higher than that in CK and DE + C (P < 0.05). Similarly, the abundance of nirK gene also significantly increased in DE (P < 0.05). The relative abundance of denitrification-related microbes in DE was higher than that in CK, DE + C could weaken their abundance. Metabolomics results demonstrated that metabolites were downgraded in aromatic amino acid and catechin metabolic pathways in DE, which were identified as precursors to synthesis key product fulvic acid. The concentrations of fulvic acid dramatically decreased 21.05 mg/g in DE comparison with CK. Biochar addition alleviated the biodegradation of aromatic metabolites and reduced the utilization of fulvic acid. Integrative analyses of metabolomics and microbiome suggested that the microbiota involved in nitrite reduction pathway was vital for the biodegradation aromatic metabolites. Mantel test verified that NO3--N, moisture content, eta, environmental factors were important drivers behind the changes in the denitrifying microbiota biodegradation function. CONCLUSION The data confirm the biodegradation function of denitrifying microbiota led to the loss of core product fulvic acid in KW composting, which highlighted the adverse role and implication of denitrification for composting humification. Control of denitrification with biochar was recommended to improve composting quality.
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Affiliation(s)
- Mingzi Shi
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin, 300387, China
- College of Life Science, Henan Agricultural University, Zhengzhou, 450000, China
| | - Caihong Song
- College of Life Science, Liaocheng University, Liaocheng, 252000, China
| | - Lina Xie
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin, 300387, China
| | - Guogang Zhang
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin, 300387, China
| | - Zimin Wei
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin, 300387, China.
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Wang Y, Lu Y, Wang L, Song G, Ni L, Xu M, Nie C, Li B, Bai Y. Analysis of the molecular composition of humic substances and their effects on physiological metabolism in maize based on untargeted metabolomics. FRONTIERS IN PLANT SCIENCE 2023; 14:1122621. [PMID: 37284724 PMCID: PMC10239833 DOI: 10.3389/fpls.2023.1122621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 04/18/2023] [Indexed: 06/08/2023]
Abstract
Introduction Humic substances (HSs), components of plant biostimulants, are known to influence plant physiological processes, nutrient uptake and plant growth, thereby increasing crop yield. However, few studies have focused on the impact of HS on overall plant metabolism, and there is still debate over the connection between HS' structural characteristics and their stimulatory actions. Methods In this study, two different HSs (AHA, Aojia humic acid and SHA, Shandong humic acid) screened in a previous experiment were chosen for foliar spraying, and plant samples were collected on the tenth day after spraying (62 days after germination) to investigate the effects of different HSs on photosynthesis, dry matter accumulation, carbon and nitrogen metabolism and overall metabolism in maize leaf. Results and discussion The results showed different molecular compositions for AHA and SHA and a total of 510 small molecules with significant differences were screened using an ESI-OPLC-MS techno. AHA and SHA exerted different effects on maize growth, with the AHA inducing more effective stimulation than the SHA doing. Untargeted metabolomic analysis revealed that the phospholipid components of maize leaves treated by SHA generally increased significantly than that in the AHA and control treatments. Additionally, both HS-treated maize leaves exhibited different levels of accumulation of trans-zeatin, but SHA treatment significantly decreased the accumulation of zeatin riboside. Compared to CK treatment, AHA treatment resulted in the reorganization of four metabolic pathways: starch and sucrose metabolism, TCA cycle, stilbenes, diarylheptanes, and curcumin biosynthesis, and ABC transport, SHA treatment modified starch and sucrose metabolism and unsaturated fatty acid biosynthesis. These results demonstrate that HSs exert their function through a multifaceted mechanism of action, partially connected to their hormone-like activity but also involving hormoneindependent signaling pathways.
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Affiliation(s)
- Yuhong Wang
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
- College of Land Science and Technology, China Agricultural University, Beijing, China
| | - Yanli Lu
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Lei Wang
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Guipei Song
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Lu Ni
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Mengze Xu
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Caie Nie
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Baoguo Li
- College of Land Science and Technology, China Agricultural University, Beijing, China
| | - Youlu Bai
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
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Piccolo A, García-Díaz C, Cozzolino V, Drosos M, Scopa A, Valentini M. Varying the hydrophobicity of humic matter by a phase-transfer-catalyzed O-alkylation reaction. CHEMOSPHERE 2023; 313:137599. [PMID: 36549509 DOI: 10.1016/j.chemosphere.2022.137599] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/07/2022] [Accepted: 12/17/2022] [Indexed: 06/17/2023]
Abstract
An O-alkylation reaction catalyzed by tetrabutylammonium hydroxide (TBAH) as a phase-transfer agent was applied to a humic acid (HA) to modify its hydrophobic properties. The carboxyl and hydroxyl functional groups of HA acted as nucleophiles in substitution reactions (Sn2) with methyl iodide, pentyl bromide and benzyl bromide added in amounts equimolar to 20, 60 and 80% of HA total nucleophilic sites. The occurrence of O-alkylation was shown by DRIFT spectrometry, NMR spectroscopy, High Performance Size Exclusion Chromatography (HPSEC) and elemental analysis of reaction products. DRIFT spectra showed changes in C-H stretching and bending regions following the insertion of methyl and pentyl groups, while the incorporation of benzyl groups revealed the characteristics aromatic C-H stretching bands. Both liquid- and solid-state NMR spectra revealed characteristic signals for alkyl/aryl esters and ethers. HPSEC chromatograms of alkylated materials invariably displayed an increase in hydrodynamic volume in respect to the original HA, thereby suggesting that the enhanced hydrophobicity conveyed further associations among humic molecules. Analytical, HPSEC and spectroscopic results suggest that benzylation was the most effective reaction at all percentages of HA total nucleophilicity, followed, in the order, by pentylation and methylation, The benzylation reaction was used to improve reaction and work-up conditions and show that HA could be efficiently alkylated also with substantial reduction of TBAH amount, with no THF addition, increase of reaction time and of washing cycles to remove catalyst impurities. These findings indicate that the hydrophobicity of humic substances can be modulated through a mild O-alkylation reaction under a phase-transfer catalysis according to the extent of exposed HA nucleophilic sites. Such a structural modification of humic matter may have multiple chemical, environmental and biological applications.
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Affiliation(s)
- Alessandro Piccolo
- Centro Interdipartimentale di Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare e i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università 100, 80055, Portici, Italy.
| | - César García-Díaz
- Departamento de Biotecnología y Bioingeniería. Centro de Investigaciones y Estudios Avanzados (Cinvestav), Av. Instituto Politécnico Nacional 2508, 07360, México City, Mexico
| | - Vincenza Cozzolino
- Centro Interdipartimentale di Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare e i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università 100, 80055, Portici, Italy
| | - Marios Drosos
- Scuola di Scienze Agrarie, Forestali, Alimentari ed Ambientali (SAFE), Università della Basilicata, Viale dell'Ateneo Lucano, 10, 85100, Potenza, Italy
| | - Antonio Scopa
- Scuola di Scienze Agrarie, Forestali, Alimentari ed Ambientali (SAFE), Università della Basilicata, Viale dell'Ateneo Lucano, 10, 85100, Potenza, Italy
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10
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Zhao YT, Wu C, Yan S, Wang C, Huang Z, Tan QG, Ji R, Yang L, Sun C, Badun GA, Chernysheva MG, Wang P, Miao AJ. Label-Free Imaging of Humic Substance Bioaccumulation by Pump-Probe Microscopy. Anal Chem 2023; 95:1219-1227. [PMID: 36577082 DOI: 10.1021/acs.analchem.2c03981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Humic substances (HS) are the most abundant forms of natural organic matter on the earth surface. Comprised of decomposed plant and animal materials rich in carbon, oxygen, hydrogen, nitrogen, and sulfur complexes, HS facilitate global carbon and nitrogen cycling and the transport of anthropogenic contaminants. While it is known that HS also interact with organisms at different trophic levels to produce beneficial and harmful effects whether HS exert these biological effects through accumulation remains unknown. Current radiolabeling techniques, which only detect the amount of accumulated radiolabels, cannot visualize the transport and accumulation behavior of HS. Here, using a label-free method based on pump-probe microscopy, we show HS entered the protozoan Tetrahymena thermophila, zebrafish embryos, and human cells and exerted direct effects on these organisms. HS accumulated in the nucleus of T. thermophila, chorion pore canals of zebrafish embryos, and nucleus of intestinal and lung cells in a concentration- and time-dependent way. Epigenetic and transcriptomics assays show HS altered chromatin accessibility and gene transcription in T. thermophila. In zebrafish larvae, HS induced neurotoxicity, altering spontaneous muscle contraction and locomotor activity. Detailed images showing HS accumulation in our study reveal new insights on the ecological and environmental behavior of HS.
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Affiliation(s)
- Ya-Tong Zhao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province210023, China
| | - Chao Wu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province210023, China
| | - Shuai Yan
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei Province430074, China
| | - Chuan Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province210023, China
| | - Zhiliang Huang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei Province430074, China
| | - Qiao-Guo Tan
- Key Laboratory of the Coastal and Wetland Ecosystems of Ministry of Education, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian361102, China
| | - Rong Ji
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province210023, China
| | - Liuyan Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province210023, China
| | - Chenghua Sun
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing100190, China
| | - Gennadii A Badun
- Lomonosov Moscow State University, Leninskie Gory119991, Moscow, Russia
| | | | - Ping Wang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei Province430074, China
| | - Ai-Jun Miao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province210023, China
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11
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Wu S, Tursenjan D, Sun Y. Impact of compost methods on humification and heavy metal passivation during chicken manure composting. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 325:116573. [PMID: 36323114 DOI: 10.1016/j.jenvman.2022.116573] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 10/06/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
Livestock manure is one of the main sources of heavy metals (HMs) in agricultural soil. So, it is necessary to reduce its bioavailability before used as organic fertilizer. In this study, the passivation effect of HMs and the evolution of dissolved organic matter (DOM) during four composting processes were explored. Results showed that different composting methods had a great effect on HMs passivation rate and humification degree. HMs were released during the thermophilic phase, and were bound by resynthesized humus during the cooling period. The best passivation effect of HMs was found in FV + T treatment, the passivation rate of Cu, Zn, Cd and Pb reached 63.80%, 34.07%, 86.54% and 45.14%, respectively, then followed by the treatment of NV + T and SC. UV-Vis spectra and excitation-emission matrix (EEM) spectra indicated that humus precursors were produced during thermophilic phase and the accumulation of humus mainly occurred in cooling period. This study can be used as a theoretical support for the safe utilization livestock manure.
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Affiliation(s)
- Shihang Wu
- Key Laboratory of Original Agro‒Environmental Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs (MARA), Agro‒Environmental Protection Institute, MARA, Tianjin, 300191, China; Tianjin Key Laboratory of Agro‒Environment and Agro‒Product Safety, Agro‒Environmental Protection Institute, MARA, Tianjin, 300191, China
| | - Dina Tursenjan
- Key Laboratory of Original Agro‒Environmental Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs (MARA), Agro‒Environmental Protection Institute, MARA, Tianjin, 300191, China; Tianjin Key Laboratory of Agro‒Environment and Agro‒Product Safety, Agro‒Environmental Protection Institute, MARA, Tianjin, 300191, China
| | - Yuebing Sun
- Key Laboratory of Original Agro‒Environmental Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs (MARA), Agro‒Environmental Protection Institute, MARA, Tianjin, 300191, China; Tianjin Key Laboratory of Agro‒Environment and Agro‒Product Safety, Agro‒Environmental Protection Institute, MARA, Tianjin, 300191, China.
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12
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Dmitrieva ED, Grinevich VI, Gertsen MM. Degradation of Oil and Petroleum Products by Biocompositions Based on Humic Acids of Peats and Oil-Degrading Microorganisms. RUSS J GEN CHEM+ 2022. [DOI: 10.1134/s1070363222120453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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13
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Fojt J, Denková P, Brtnický M, Holátko J, Řezáčová V, Pecina V, Kučerík J. Influence of Poly-3-hydroxybutyrate Micro-Bioplastics and Polyethylene Terephthalate Microplastics on the Soil Organic Matter Structure and Soil Water Properties. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:10732-10742. [PMID: 35816335 DOI: 10.1021/acs.est.2c01970] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Adverse effects of microplastics on soil abiotic properties have been attributed to changes in the soil structure. Notably, however, the effects on the supramolecular structure of soil organic matter (SOM) have been overlooked, despite their key role in most soil properties. This work accordingly investigated the influence of plastic residues at various concentrations on the SOM supramolecular structure and soil water properties. To model plastic residues of micro-bioplastics, spherical or spherical-like poly-3-hydroxybutyrate (PHB) was used, while polyethylene terephthalate (PET) was used as a model of conventional microplastics. The results suggest that both types of plastic residues affect SOM properties, including physical stability (represented by water molecule bridges), water binding (represented by decreased desorption enthalpy or faster desorption), and the stability of SOM aliphatic crystallites. The results further showed that the polyester-based microplastics and micro-bioplastics affected the SOM abiotic characteristics and that therefore the observed effects cannot be attributed solely to changes in the whole soil structure. Notably, similar adverse effects on SOM were observed for both tested plastic residues, although the effect of PHB was less pronounced compared to that of PET.
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Affiliation(s)
- Jakub Fojt
- Institute of Chemistry and Technology of Environmental Protection, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic
| | - Pavla Denková
- Institute of Chemistry and Technology of Environmental Protection, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic
| | - Martin Brtnický
- Institute of Chemistry and Technology of Environmental Protection, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic
- Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic
| | - Jiří Holátko
- Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic
| | - Veronika Řezáčová
- Institute of Chemistry and Technology of Environmental Protection, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic
| | - Václav Pecina
- Institute of Chemistry and Technology of Environmental Protection, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic
- Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic
| | - Jiří Kučerík
- Institute of Chemistry and Technology of Environmental Protection, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic
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Profile Soil Carbon and Nitrogen Dynamics in Typical Chernozem under Long-Term Tillage Use. LAND 2022. [DOI: 10.3390/land11081165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
For the first time in research literature, this report presents the seasonal changes of total organic carbon (TOC), total nitrogen (TN), and TOC:TN ratio in Chernozem solum (0–100 cm) as effected by 14 years of application of conventional tillage (CTu), deep reduced tillage (DRTu), and reduced tillage (RTu) under barley growing. During the season, TOC content drastically declined in the spring, increased in the summer, decreased in the middle of August, and recovered in October. TN content was gradually decreased during a crop growing season and renewed in the autumn. A trend of TOC:TN changes (vertical peak curve) in 0–30 cm soil layer varied from TOC (S-shaped curve) and TN (unsymmetrical decayed curve). The amplitude of seasonal TOC and TN changes in deeper layers was far fewer related to the upper horizons. The highest amplitude in 0–30, 30–60 and 60–100 cm layers was under: DRTu, CTu, DRTu—for TOC and DRTu, CTu, RTu—for TN correspondently. Tillage practices differently stratified the content of organic carbon and nitrogen in Chernozem profile. Minimum tillage benefited TOC sequestration in 0–5 and 5–10 cm layers: 24.83 ± 0.64- and 24.65 ± 0.57 g kg−1—under RTu, 24.49 ± 0.62- and 24.71 ± 0.47 g kg−1—under DRTu, while CT—deeper than 20 cm: 22.49–15.03 g kg−1. The vertical distribution of TN content repeated TOC trend. TOC:TN ratio upraised from 12.60 in 0–5 to 14.33 in 80–100 cm layer and was the highest in summertime. A total (0–100 cm) profile was much greater under RTu and DRTu—for TN, and CTu, DRTu—for TOC. The correlation coefficient (r) was almost negligible between TOC and: T (air temperature), P (precipitation) and W (soil moisture). The strong and very strong r was found for TN—W, and P—W pairs. The negative r was between: TOC–P, TN–P, TOC:TN-W, TOC:TN–T and P–W pairs.
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Seasonal Dynamics of Organic Carbon and Nitrogen in Biomasses of Microorganisms in Arable Mollisols Affected by Different Tillage Systems. LAND 2022. [DOI: 10.3390/land11040486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Tillage has been reported to induce seasonal changes of organic carbon (Cmicro) and nitrogen (Nmicro) in the biomass of microorganisms. Soil microorganisms execute such ecosystem functions as it is an immediate sink of labile biophil elements; it is an agent of a conversion, catalysis and synthesis of humus substances; it transforms soil contaminants into nonhazardous wastes and it participates in soil aggregation and pedogenesis as a whole. However, the seasonal turnover of microorganisms on arable lands in temperate ecosystems has not been studied at a relevant level. Hence, we are aimed at studying the dynamics of such soil microbial biomass patterns as Cmicro, Nmicro, microbial index (MI = (Cmicro/CTOC)·100%) and CO2-C emissions against the background of 9 years of tillage and 22 years of abandoned (Ab) and fallow (F) usage. Our study was conducted on a long-term experimental site on a Mollisol in Northeast China. The maximum Cmicro and Nmicro contents were recorded at the beginning of the growing season at the 0–10-cm layer and mid-July at the 20–40-cm layer, while the minimum content was during August–October. The Cmicro content ranged from 577.79 to 381.79 mg−1 kg−1 using Ab in the spring to 229.53 to 272.86 mg−1 kg−1 in the autumn using CT (conventional tillage) and F in the 0–10- and 10–20-cm layers, respectively. The amplitude of Nmicro content changes were several times lower as compared with the Cmicro. The smallest quartile range (IQR0.25–0.75) of such changes was shown when using the following treatments: no till (NT) and Ab in the 0–10-, NT and F in the 10–20- and CT in the 20–40-cm layer. The widest Cmicro:Nmicro ratio was recorded at F and CT in the 0–20- and CT and rotational tillage (Rot) in the 20–40-cm layer. The MI dynamics were similar to the trends of Cmicro and Nmicro and changed from 0.72 ± 0.168 to 2.00 ± 0.030%. The highest share of Cmicro in CTOC was at Ab (1.82 ± 1.85%) and NT (1.66 ± 1.52 %) in the 0–10-, Ab (1.23 ± 1.27%) and NT (1.29 ± 1.32%) in the 10–20- and Ab (1.19 ± 1.09%) and F (1.11 ± 1.077%) in the 20–40-cm layer, correspondingly. The Pearson’s correlation coefficient between Cmicro and CTOC increased from the upper 0–10- to the lower 20–40-cm layer; it was “strong” and “high” between Cmicro and CTOC. Different uses of Mollisol affected the amplitude of the Cmicro and Nmicro seasonal changes, but it did not change their trend. Our results suggest the key role of Ab and NT technologies in Cmicro accumulation in the total organic carbon (TOC).
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Zhou X, Wang J, Jiang Y, Leng G, Vasilyeva GK, Waigi MG, Gao Y. Characterization of Different Molecular Size Fractions of Glomalin-Related Soil Protein From Forest Soil and Their Interaction With Phenanthrene. Front Microbiol 2022; 12:822831. [PMID: 35281310 PMCID: PMC8905316 DOI: 10.3389/fmicb.2021.822831] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 12/27/2021] [Indexed: 01/31/2023] Open
Abstract
As a natural organic compound secreted by arbuscular mycorrhizal fungi (AMF), glomalin-related soil protein (GRSP) is an important part in soil, affecting the bioavailability of polycyclic aromatic hydrocarbons (PAHs) in it. Previous research have demonstrated that GRSP could enhance the availability of PAHs in the soil and favor their accumulation in plant roots. However, a scarcity of research exists on the different molecular weights of GRSP interacting with PAHs due to their complexation and heterogeneity. In this research, the extracted GRSP in soil was divided into three molecular weight (Mw) fractions of GRSP (<3,000, 3,000-10,000, and >10,000 Da), whose characteristics and binding capacity of PAHs were conducted by using UV-visible absorption, quenching fluorometry and, Fourier transform infrared spectroscopy. The results showed that the GRSP was composed of abundant compounds, it has a wide distribution of molecular weight, and the >10,000 Da Mw fraction was dominant. For three Mw fractions of GRSP, they have some difference in spectral features, for example, the >10,000 Da fraction showed higher dissolved organic carbon (DOC) contents, more phenolic hydroxyl groups, and stronger UV adsorption capacity than the low and middle Mw fractions. In addition, the interaction between GRSP and phenanthrene is related to the characteristics of the Mw fractions, especially the phenolic hydroxyl group, which has a significantly positive correlation with a binding coefficient of K A (k = 0.992, p < 0.01). Simultaneously, hydrophobic, NH-π, and H-bound also played roles in the complexation of phenanthrene with GRSP. These findings suggested that different GRSP Mw fractions could influence the fate, availability, and toxicity of PAHs in soil by their interaction.
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Affiliation(s)
- Xian Zhou
- College of Resources and Environmental Sciences, Institute of Organic Contaminant Control and Soil Remediation, Nanjing Agricultural University, Nanjing, China
| | - Jian Wang
- College of Resources and Environmental Sciences, Institute of Organic Contaminant Control and Soil Remediation, Nanjing Agricultural University, Nanjing, China
| | - Yi Jiang
- College of Resources and Environmental Sciences, Institute of Organic Contaminant Control and Soil Remediation, Nanjing Agricultural University, Nanjing, China
| | - Ganghua Leng
- College of Resources and Environmental Sciences, Institute of Organic Contaminant Control and Soil Remediation, Nanjing Agricultural University, Nanjing, China
| | - Galina K. Vasilyeva
- Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, Moscow, Russia
| | - Michael Gatheru Waigi
- College of Resources and Environmental Sciences, Institute of Organic Contaminant Control and Soil Remediation, Nanjing Agricultural University, Nanjing, China
| | - Yanzheng Gao
- College of Resources and Environmental Sciences, Institute of Organic Contaminant Control and Soil Remediation, Nanjing Agricultural University, Nanjing, China
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Zherebker A, Rukhovich GD, Sarycheva A, Lechtenfeld OJ, Nikolaev EN. Aromaticity Index with Improved Estimation of Carboxyl Group Contribution for Biogeochemical Studies. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:2729-2737. [PMID: 35084826 DOI: 10.1021/acs.est.1c04575] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Natural organic matter (NOM) components measured with ultrahigh-resolution mass spectrometry (UHRMS) are often assessed by molecular formula-based indices, particularly related to their aromaticity, which are further used as proxies to explain biogeochemical reactivity. An aromaticity index (AI) is calculated mostly with respect to carboxylic groups abundant in NOM. Here, we propose a new constrained AIcon based on the measured distribution of carboxylic groups among individual NOM components obtained by deuteromethylation and UHRMS. Applied to samples from diverse sources (coal, marine, peat, permafrost, blackwater river, and soil), the method revealed that the most probable number of carboxylic groups was two, which enabled to set a reference point n = 2 for carboxyl-accounted AIcon calculation. The examination of the proposed AIcon showed the smallest deviation to the experimentally determined index for all NOM samples under study as well as for individual natural compounds obtained from the Coconut database. In particular, AIcon performed better than AImod for all compound classes in which aromatic moieties are expected: aromatics, condensed aromatics, and unsaturated compounds. Therefore, AIcon referenced with two carboxyl groups is preferred over conventional AI and AImod for biogeochemical studies where the aromaticity of compounds is important to understand the transformations and fate of NOM compounds.
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Affiliation(s)
| | - Gleb D Rukhovich
- Skolkovo Institute of Science and Technology, Moscow 121205, Russia
| | | | - Oliver J Lechtenfeld
- Department of Analytical Chemistry, Research Group BioGeoOmics, Helmholtz Centre for Environmental Research─UFZ, Leipzig DE-04318, Germany
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The Effect of Supramolecular Humic Acids on the Diffusivity of Metal Ions in Agarose Hydrogel. Molecules 2022; 27:molecules27031019. [PMID: 35164280 PMCID: PMC8838780 DOI: 10.3390/molecules27031019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/24/2022] [Accepted: 01/28/2022] [Indexed: 12/04/2022] Open
Abstract
Humic acids are known as natural substances of a supramolecular nature. Their self-assembly ability can affect the migration of heavy metals and other pollutants in nature. The formation of metal-humic complexes can decrease their mobility and bioavailability. This study focuses on metal ions diffusion and immobilization in humic hydrogels. Humic acids were purchased from International Humic Substances Society (isolated from different matrices—peat, soil, leonardite, water) and extracted from lignite mined in Czech Republic. Copper(II) ions were chosen as a model example of reactive metals for the diffusion experiments. The model of instantaneous planar source was used for experimental data obtained from monitoring the time development of copper(II) ions distribution in hydrogel. The effective diffusion coefficients of copper(II) ions showed the significant dependence on reaction ability of humic hydrogels. Lower amounts of the acidic functional groups caused an increase in the effective diffusion coefficient. In general, diffusion experiments seem to act as a valuable method for reactivity mapping studies on humic substances.
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Vinci G, Piccolo A, Bridoux M. Complementary ESI and APPI high resolution mass spectrometry unravel the molecular complexity of a soil humeome. Anal Chim Acta 2022; 1194:339398. [DOI: 10.1016/j.aca.2021.339398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 11/25/2021] [Accepted: 12/23/2021] [Indexed: 11/01/2022]
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Strus O, Fedorovska M, Holota S, Polovko N. Development and validation of standardization methods of aqueous sapropel extract. PHARMACIA 2021. [DOI: 10.3897/pharmacia.68.e71783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Methodological bases and uniform standardization criteria of humic compounds as substances for drug products have not been developed yet. This is due to the structural complexity of humic compounds, the variety of ways to extract them from natural objects, the impossibility of using many classical methods of analytical chemistry to identify and quantify humic substances (HS), the lack of standard samples. The identification of humic acids (HA) in the aqueous sapropel extract (ASE) is identified after extracting from ASE by alkaline hydrolysis by the quantification method. After further precipitation with a concentrated sulfuric acid solution characteristic dark brown color is appeared. It was carried out the HA extraction from the sample of ASE, the precipitation of HA, the oxidation of HA and Mohr’s salt titration in accordance with the methodology developed on the basis of SSTU 7083:2009. It was determined that the total mass fraction of HA in the ASE sample was 83.8 mg/g± 0.12%. The methods of identification and quantification of the total mass of HA in ASE have been developed and validated. The ASE has been standardized.
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21
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Feng X, Sun X, Zhou W, Zhang W, Che F, Li S. The effects of green waste compost on soil N, P, K, and organic matter fractions in forestry soils: elemental analysis evaluation. RSC Adv 2021; 11:31983-31991. [PMID: 35495542 PMCID: PMC9042198 DOI: 10.1039/d1ra04986k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 09/15/2021] [Indexed: 12/03/2022] Open
Abstract
We study the effects of green waste compost on soil fertility to provide a theoretical basis for accurately improving forestry soil quality. This study aims to investigate the effects of green waste compost on soil N, P, K, and soil organic matter (SOM) fractions using elemental and FTIR analyses. Therefore, five fertilization treatments were set up for research, including mineral fertilization (M-fert), green waste compost fertilization (G-fert), standard rate of M-fert plus G-fert (GM-fert), half the standard rate of M-fert plus G-fert (1/2 GM-fert), and a control with no fertilizer addition (N-fert). The results showed that GM-fert treatment significantly increased the content of soil NH4–N, available phosphorus (AP), available potassium (AK), water soluble organic carbon (WSOC), humus (HE), and humic acid (HA), which were 8.53 ± 0.67, 76.1 ± 5.96, 168 ± 3.42, 0.152 ± 0.01, 5.64 ± 0.15, and 4.69 ± 0.21 mg kg−1, respectively. The content of HA (36.7%, F = 7.55, P = 0.01) was positively correlated with the soil N, P, K, and the HA absorption peak. The relative intensities of the alcohol –OH, aliphatic –CH and carbohydrate C–O peaks showed the largest changes, which were 18.6 ± 0.56%, 13.1 ± 0.33%, and 16.3 ± 0.49%. –CH/C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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C (49.8%, F = 12.9, P < 0.01) was also significantly positively correlated with soil N, P, K. In conclusion, green waste compost significantly increased soil N, P, K, and HA in forestry soils, and the –CH/CC of HA was the main factor related to soil nutrients. Green waste compost significantly increased soil N, P, K, and HE fractions, and the –CH/CC components of the HA structures made the biggest contribution to soil N, P, K in forestry soil.![]()
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Affiliation(s)
- Xiaojie Feng
- College of Forestry, Beijing Forestry University Beijing 100083 PR China
| | - Xiangyang Sun
- College of Forestry, Beijing Forestry University Beijing 100083 PR China
| | - Wenjie Zhou
- College of Forestry, Beijing Forestry University Beijing 100083 PR China
| | - Wei Zhang
- Beijing Tongzhou District Gardening and Greening Bureau Beijing 100013 PR China
| | - Feiwei Che
- College of Forestry, Beijing Forestry University Beijing 100083 PR China
| | - Suyan Li
- College of Forestry, Beijing Forestry University Beijing 100083 PR China
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22
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Vinci G, Cangemi S, Bridoux M, Spaccini R, Piccolo A. Molecular properties of the Humeome of two calcareous grassland soils as revealed by GC/qTOF-MS and NMR spectroscopy. CHEMOSPHERE 2021; 279:130518. [PMID: 33873069 DOI: 10.1016/j.chemosphere.2021.130518] [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: 01/28/2021] [Revised: 03/28/2021] [Accepted: 04/05/2021] [Indexed: 06/12/2023]
Abstract
A Humeomic fractionation revealed the humus molecular composition of two uncropped calcareous soils of Northern France and differentiated the soils Humeome by extracting humic components first unbound to the organo-mineral matrix and then liberated from their progressively stronger intermolecular and intramolecular ester and ether linkages. We separated organo- (ORG1-3) and water-soluble (AQU2 and AQU4) fractions, a final extractable fraction (RESOM) and soil residues. Organo-soluble fractions were studied by GC coupled with high-resolution mass spectrometry (GC/qTOF-MS), all fractions underwent mono- and two-dimensional liquid-state NMR (except for the iron-rich AQU4 fraction), while solid-state 13C-CPMAS-NMR spectroscopy analyzed soil residues. The Calcaric Leptosol (A) showed a larger mass extraction than the Calcaric Cambisol (B), and a greater cumulative C and N content in its Humeome. Both soils showed the greatest weight yield for AQU4 fraction, followed by ORG2, RESOM, ORG1, AQU2, and ORG3. ORG2 was the most differentiating fraction between the two soils for both compound concentration and diversity, showing a larger C content for soil A than for soil B and a different distribution in aromatic compounds, fatty acids, and dicarboxylic acids. No significant differences between soils were found for ORG 3, suggesting similar processes of OM stabilization for its recalcitrant components, mostly hydrophobic esters of alkanoic, hydroxy, and aromatic acids with linear alkanols. We confirmed that Humeomic fractionation coupled to advanced analytical instrumentations enabled a detailed molecular characterization of the soil Humeome and differentiated between the two calcareous grassland soils and the other soils previously subjected to Humeomics.
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Affiliation(s)
- Giovanni Vinci
- Centro Interdipartimentale di Ricerca Sulla Risonanza Magnetica Nucleare per L'Ambiente, L'Agroalimentare Ed I Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università, 100, 80055, Portici (NA), Italy.
| | - Silvana Cangemi
- Centro Interdipartimentale di Ricerca Sulla Risonanza Magnetica Nucleare per L'Ambiente, L'Agroalimentare Ed I Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università, 100, 80055, Portici (NA), Italy
| | | | - Riccardo Spaccini
- Centro Interdipartimentale di Ricerca Sulla Risonanza Magnetica Nucleare per L'Ambiente, L'Agroalimentare Ed I Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università, 100, 80055, Portici (NA), Italy
| | - Alessandro Piccolo
- Centro Interdipartimentale di Ricerca Sulla Risonanza Magnetica Nucleare per L'Ambiente, L'Agroalimentare Ed I Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università, 100, 80055, Portici (NA), Italy.
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23
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Vitiello G, Venezia V, Verrillo M, Nuzzo A, Houston J, Cimino S, D'Errico G, Aronne A, Paduano L, Piccolo A, Luciani G. Hybrid humic acid/titanium dioxide nanomaterials as highly effective antimicrobial agents against gram(-) pathogens and antibiotic contaminants in wastewater. ENVIRONMENTAL RESEARCH 2021; 193:110562. [PMID: 33271143 DOI: 10.1016/j.envres.2020.110562] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 11/25/2020] [Accepted: 11/27/2020] [Indexed: 06/12/2023]
Abstract
Humic acids (HAs) provide an important bio-source for redox-active materials. Their functional chemical groups are responsible for several properties, such as metal ion chelating activity, adsorption ability towards small molecules and antibacterial activity, through reactive oxygen species (ROS) generation. However, the poor selectivity and instability of HAs in solution hinder their application. A promising strategy for overcoming these disadvantages is conjugation with an inorganic phase, which leads to more stable hybrid nanomaterials with tuneable functionalities. In this study, we demonstrate that hybrid humic acid/titanium dioxide nanostructured materials that are prepared via a versatile in situ hydrothermal strategy display promising antibacterial activity against various pathogens and behave as selective sequestering agents of amoxicillin and tetracycline antibiotics from wastewater. A physicochemical investigation in which a combination of techniques were utilized, which included TEM, BET, 13C-CPMAS-NMR, EPR, DLS and SANS, shed light on the structure-property-function relationships of the nanohybrids. The proposed approach traces a technological path for the exploitation of organic biowaste in the design at the molecular scale of multifunctional nanomaterials, which is useful for addressing environmental and health problems that are related to water contamination by antibiotics and pathogens.
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Affiliation(s)
- Giuseppe Vitiello
- Department of Chemical, Materials and Production Engineering (DICMaPI), University of Naples Federico II, Piazzale Tecchio 80, 80125, Naples, Italy; CSGI, Center for Colloid and Surface Science, Via Della Lastruccia 3, Sesto Fiorentino, FI, Italy.
| | - Virginia Venezia
- Department of Chemical, Materials and Production Engineering (DICMaPI), University of Naples Federico II, Piazzale Tecchio 80, 80125, Naples, Italy
| | - Mariavittoria Verrillo
- Department of Agricultural Science, University of Naples Federico II, Via Università 100, 80055, Portici, Italy; Centro Interdipartimentale di Ricerca Sulla Risonanza Magnetica Nucleare per L'Ambiente, L'Agro-Alimentare Ed I Nuovi Materiali (CERMANU), Via Università 100, 80055, Portici, Italy
| | - Assunta Nuzzo
- Department of Agricultural Science, University of Naples Federico II, Via Università 100, 80055, Portici, Italy; Centro Interdipartimentale di Ricerca Sulla Risonanza Magnetica Nucleare per L'Ambiente, L'Agro-Alimentare Ed I Nuovi Materiali (CERMANU), Via Università 100, 80055, Portici, Italy
| | - Judith Houston
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstraße 1, Garching, 85747, Germany; European Spallation Source (ESS), Odarslovsvagen 113, 22592, Lund, Sweden
| | - Stefano Cimino
- IRC-Istituto di Ricerche Sulla Combustione, CNR - Consiglio Nazionale Delle Ricerche, Piazzale V. Tecchio 80, 80125, Naples, Italy
| | - Gerardino D'Errico
- CSGI, Center for Colloid and Surface Science, Via Della Lastruccia 3, Sesto Fiorentino, FI, Italy; Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126, Naples, Italy
| | - Antonio Aronne
- Department of Chemical, Materials and Production Engineering (DICMaPI), University of Naples Federico II, Piazzale Tecchio 80, 80125, Naples, Italy
| | - Luigi Paduano
- CSGI, Center for Colloid and Surface Science, Via Della Lastruccia 3, Sesto Fiorentino, FI, Italy; Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126, Naples, Italy
| | - Alessandro Piccolo
- Department of Agricultural Science, University of Naples Federico II, Via Università 100, 80055, Portici, Italy; Centro Interdipartimentale di Ricerca Sulla Risonanza Magnetica Nucleare per L'Ambiente, L'Agro-Alimentare Ed I Nuovi Materiali (CERMANU), Via Università 100, 80055, Portici, Italy
| | - Giuseppina Luciani
- Department of Chemical, Materials and Production Engineering (DICMaPI), University of Naples Federico II, Piazzale Tecchio 80, 80125, Naples, Italy
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24
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Bunkin N, Glinushkin AP, Shkirin AV, Ignatenko DN, Chirikov SN, Savchenko IV, Meshalkin VP, Samarin GN, Maleki A, Kalinitchenko VP. Identification of Organic Matter Dispersions Based on Light Scattering Matrices Focusing on Soil Organic Matter Management. ACS OMEGA 2020; 5:33214-33224. [PMID: 33403283 PMCID: PMC7774274 DOI: 10.1021/acsomega.0c04906] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 12/02/2020] [Indexed: 05/21/2023]
Abstract
The origin of organic matter, its spread, scattering, and functioning are influenced by the physical structure of liquid or dispersed media of organic matter. Refractive indices of fodder yeast grown on paraffin oil (paprin) and natural gas (gaprin) as well as Lycoperdon spore and organelles were measured by laser phase microscopy. The scattering matrices of aqueous suspensions of paprin, gaprin, and Lycoperdon spores were measured using a laser polarimeter with the scattering angle ranging from 20 to 150°. The experimentally measured scattering matrices have been approximated by the weighted sum of theoretically calculated scattering matrices using the T-matrix code developed by Mishchenko. Most of the particle radii in the filtered fraction of paprin and gaprin were within the range of about 0.05-0.12 μm. Particle radii of the Lycoperdon spore suspension were within the range of 0.4-2.4 μm, which corresponded to both whole spores and their separate organelles. A possibility of identifying a suspension by its scattering matrices was shown for a small difference in the real parts of the refractive index in the example of paprin and gaprin. The measurements of the light scattering matrix showed that for a small size parameter of about 1, the identification of paprin and gaprin can be based only on a difference in the particle shape. Refractive index difference is manifested for the size parameter values higher than 3. An example of a suspension consisting of micron-sized spores and their submicron organelles shows high sensitivity of the scattering matrix to the composition of the dispersed material. The presented data and models help to extrapolate the results of the light scattering matrix study to a vast spectrum of media of organic matter origin and functioning. This study focused on the Biogeosystem Technique (BGT*) transcendental methodology to manage soil as an arena of biodegradation and organic synthesis. A BGT*-based robotic system for intra-soil pulse continuous-discrete water and matter supply directly into the dispersed-aggregated physical structure of the soil media was developed. The system enables transformation of soil into a stable highly productive organic chemical bioreactor for better controlled nanoparticle biomolecular interactions and adsorption by biological and mineral media. The scattering matrix measurement unit is supposed to be used in the robotic system as a diagnostic tool for the dispersion composition of soil organic components.
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Affiliation(s)
- Nikolai
F. Bunkin
- Bauman
Moscow State Technical University, 5 2nd Baumanskaya St., Moscow 105005, Russia
- Prokhorov
General Physics Institute of the Russian Academy of Sciences, Vavilov St. 38, Moscow 119991, Russia
| | - Alexey P. Glinushkin
- All-Russia
Research Institute for Phytopathology of the Russian Academy of Sciences, Big Vyazyomy, Moscow Region 143050, Russia
| | - Alexey V. Shkirin
- Prokhorov
General Physics Institute of the Russian Academy of Sciences, Vavilov St. 38, Moscow 119991, Russia
| | - Dmitriy N. Ignatenko
- Prokhorov
General Physics Institute of the Russian Academy of Sciences, Vavilov St. 38, Moscow 119991, Russia
| | - Sergey N. Chirikov
- National
Research Nuclear University MEPhI, 31 Kashirskoe sh., Moscow 115409, Russia
| | - Ivan V. Savchenko
- All-Russia
Research Institute for Phytopathology of the Russian Academy of Sciences, Big Vyazyomy, Moscow Region 143050, Russia
| | - Valery P. Meshalkin
- D.
Mendeleev University of Chemical Technology of Russia, 9 Miusskaya square, Moscow 125047, Russia
| | - Gennady N. Samarin
- Federal
State Budgetary Scientific Institution “Federal Scientific
Agroengineering Center VIM” (FSAC VIM), 5 First Institutskiy pr-d, Moscow 109428, Russia
| | - Alireza Maleki
- Institute
of Molecular Medicine, Sechenov University, 119991 Moscow, Russia
- Department
of Physics and Astronomy, Macquarie University, Macquarie Park, NSW 2109, Australia
| | - Valery P. Kalinitchenko
- All-Russia
Research Institute for Phytopathology of the Russian Academy of Sciences, Big Vyazyomy, Moscow Region 143050, Russia
- Institute
of Fertility of Soils of South Russia, 2 Krivoshlykova St., Persianovka 346493, Russia
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25
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Dos Santos JV, Fregolente LG, Mounier S, Hajjoul H, Ferreira OP, Moreira AB, Bisinoti MC. Fulvic acids from Amazonian anthropogenic soils: Insight into the molecular composition and copper binding properties using fluorescence techniques. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 205:111173. [PMID: 32853866 DOI: 10.1016/j.ecoenv.2020.111173] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 08/08/2020] [Accepted: 08/11/2020] [Indexed: 06/11/2023]
Abstract
Fulvic acids (FA) are one of the components of humic substances and play an important role in the interaction with metallic species and, consequently, the bioavailability, distribution and toxicity of metals. However, only a few studies have investigated these FA properties in specific environment, such as anthropogenic soils. Therefore, knowledge about FA molecular composition as well as the FA-metal interaction is essential to predict their behavior in the soil. For this reason, the aim of this study was to investigate the molecular composition of FA extracted from two sites in an anthropogenic soil (Terra Mulata), from the Amazon region, as well as their interactions with Cu(II) ions as a model. Results from 13C NMR, infrared and elemental analysis showed that these FA are composed mostly by alkyl structures and oxygen-functional groups, e.g., hydroxyl, carbonyl and carboxyl. The interaction with Cu(II) ions was evaluated by fluorescence quenching, in which the FA showed both high quantity of complexing sites per gram of carbon and good affinity to interact with the metal when compared with other soil FA. The results showed that the complexation capacity was highly correlated by the content of functional groups, while the binding affinity was largely influenced by structural factors. In addition, through the lifetime decay given by time-resolved fluorescence, it was concluded that static quenching took place in FA and Cu(II) interaction with the formation of a non-fluorescent ground-state complex. Therefore, this fraction of soil organic matter will fully participate in complexation reactions, thereby influencing the mobility and bioavailability of metal in soils. Hence, the importance of the study, and the role of FA in the environment, can be seen especially in the Amazon, which is one of the most important biomes in the world.
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Affiliation(s)
- João Vitor Dos Santos
- Laboratório de Estudos em Ciências Ambientais, Departamento de Química e Ciências Ambientais, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista "Júlio de Mesquita Filho", 15054-000, São José do Rio Preto, São Paulo, Brazil; Université de Toulon, Aix Marseille Univ., CNRS/INSU, IRD, MIO UM 110, Mediterranean Institute of Oceanography, CS 60584, 83041, Toulon, France
| | - Laís Gomes Fregolente
- Laboratório de Estudos em Ciências Ambientais, Departamento de Química e Ciências Ambientais, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista "Júlio de Mesquita Filho", 15054-000, São José do Rio Preto, São Paulo, Brazil; Laboratório de Materiais Funcionais Avançados, Departamento de Física, Universidade Federal do Ceará, 60455-900, Fortaleza, Ceará, Brazil
| | - Stéphane Mounier
- Université de Toulon, Aix Marseille Univ., CNRS/INSU, IRD, MIO UM 110, Mediterranean Institute of Oceanography, CS 60584, 83041, Toulon, France
| | - Houssam Hajjoul
- Université de Toulon, Aix Marseille Univ., CNRS/INSU, IRD, MIO UM 110, Mediterranean Institute of Oceanography, CS 60584, 83041, Toulon, France
| | - Odair Pastor Ferreira
- Laboratório de Materiais Funcionais Avançados, Departamento de Física, Universidade Federal do Ceará, 60455-900, Fortaleza, Ceará, Brazil
| | - Altair Benedito Moreira
- Laboratório de Estudos em Ciências Ambientais, Departamento de Química e Ciências Ambientais, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista "Júlio de Mesquita Filho", 15054-000, São José do Rio Preto, São Paulo, Brazil
| | - Márcia Cristina Bisinoti
- Laboratório de Estudos em Ciências Ambientais, Departamento de Química e Ciências Ambientais, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista "Júlio de Mesquita Filho", 15054-000, São José do Rio Preto, São Paulo, Brazil.
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26
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Soares da Silva L, Constantino IC, Bento LR, Tadini AM, Bisinoti MC, Boscolo M, Ferreira OP, Mounier S, Piccolo A, Spaccini R, Cornélio ML, Moreira AB. Humic extracts from hydrochar and Amazonian Anthrosol: Molecular features and metal binding properties using EEM-PARAFAC and 2D FTIR correlation analyses. CHEMOSPHERE 2020; 256:127110. [PMID: 32464361 DOI: 10.1016/j.chemosphere.2020.127110] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 05/16/2020] [Accepted: 05/16/2020] [Indexed: 06/11/2023]
Abstract
Organic matter plays many roles in the soil ecosystem. One property of the substance concerns the metal complexation and interaction with organic contaminants. In this sense, the humic substances (HS), a heterogeneous mixture of compounds, naturally derived from degradation of biomass, have been widely studied in environmental sciences. Recent advances showed a new way to produce humic-like substances (HLS) through hydrothermal carbonization of biomass. Thus, this study aimed to evaluate the HLS of hydrochars, produced by using a mixture of sugarcane bagasse and vinasse with sulfuric acid added (1 and 4% v/v), and to assess their interactions with metal ions, (Fe(III), Al(III), Cu(II) and Co(II)) using EEM-PARAFAC and a two-dimensional FTIR correlation analysis. The results were compared to the humic substances extracted from the Amazonian Anthrosol, as a model of anthropogenic organic matter. NMR analysis showed that humic-like extracts from hydrochar are mainly hydrophobic, while the soil has a greater contribution of polar moieties. The HLS and HS showed similar complexation capacities for Fe(III), Al(III) and Cu(II) assays. For Co(II) HLS exhibited larger affinities than HS. Two-dimensional correlation analysis FTIR showed that chemical groups may undergo conformational alteration with metal additions to achieve more stable arrangements (higher stability constant). Therefore, these results contribute more knowledge about the mechanism of HS and metal ion interaction, as well as showing that HTC can be an interesting option for HLS production, to be used as humic based materials.
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Affiliation(s)
- Leila Soares da Silva
- Department of Chemistry and Environmental Sciences, São Paulo State University (UNESP), Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São José do Rio Preto, São Paulo, Brazil
| | - Isabela Carreira Constantino
- Department of Chemistry and Environmental Sciences, São Paulo State University (UNESP), Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São José do Rio Preto, São Paulo, Brazil
| | - Lucas Raimundo Bento
- Department of Chemistry and Environmental Sciences, São Paulo State University (UNESP), Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São José do Rio Preto, São Paulo, Brazil; The Interdepartmental Research Centre on Nuclear Magnetic Resonance (NMR) for the Environment, Agroo-food and New Materials (CERMANU), University of Naples Federico II, Portici, Naples, Italy
| | - Amanda Maria Tadini
- Brazilian Agricultural Research Corporation (Embrapa Instrumentação), São Carlos, São Paulo, Brazil
| | - Márcia Cristina Bisinoti
- Department of Chemistry and Environmental Sciences, São Paulo State University (UNESP), Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São José do Rio Preto, São Paulo, Brazil
| | - Maurício Boscolo
- Department of Chemistry and Environmental Sciences, São Paulo State University (UNESP), Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São José do Rio Preto, São Paulo, Brazil
| | - Odair Pastor Ferreira
- Laboratório de Materiais Funcionais Avançados (LaMFA), Department of Physics, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Stéphane Mounier
- Mediterranean Institute of Oceanography, University Toulon, Toulon, France
| | - Alessandro Piccolo
- The Interdepartmental Research Centre on Nuclear Magnetic Resonance (NMR) for the Environment, Agroo-food and New Materials (CERMANU), University of Naples Federico II, Portici, Naples, Italy
| | - Riccardo Spaccini
- The Interdepartmental Research Centre on Nuclear Magnetic Resonance (NMR) for the Environment, Agroo-food and New Materials (CERMANU), University of Naples Federico II, Portici, Naples, Italy
| | - Marinônio Lopes Cornélio
- Department of Physics, São Paulo State University (UNESP), São Paulo State University (UNESP), Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São José do Rio Preto, São Paulo, Brazil
| | - Altair Benedito Moreira
- Department of Chemistry and Environmental Sciences, São Paulo State University (UNESP), Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São José do Rio Preto, São Paulo, Brazil.
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27
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Bento LR, Melo CA, Ferreira OP, Moreira AB, Mounier S, Piccolo A, Spaccini R, Bisinoti MC. Humic extracts of hydrochar and Amazonian Dark Earth: Molecular characteristics and effects on maize seed germination. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 708:135000. [PMID: 31791776 DOI: 10.1016/j.scitotenv.2019.135000] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 10/14/2019] [Accepted: 10/14/2019] [Indexed: 05/27/2023]
Abstract
Inspired by the presence of anthropogenic organic matter in highly fertile Amazonian Dark Earth (ADE), which is attributed to the transformation of organic matter over thousands of years, we explored hydrothermal carbonization as an alternative for humic-like substances (HLS) production. Hydrothermal carbonization of sugarcane industry byproducts (bagasse and vinasse) in the presence and absence of H3PO4 afforded HLS, which were isolated and compared with humic substances (HS) isolated from ADE in terms of molecular composition and maize seed germination activity. HLS isolated from sugarcane bagasse hydrochar produced in the presence or absence of H3PO4 comprised both hydrophobic and hydrophilic moieties, differing from other HLS mainly in terms of phenolic content, while HLS isolated from vinasse hydrochar featured hydrophobic structures mainly comprising aliphatic moieties. Compared to that of HLS, the structure of soil-derived HS reflected an increased contribution of fresh organic matter input and, hence, featured a higher content of O-alkyl moieties. HLS derived from lignocellulosic biomass were rich in phenolics and promoted maize seed germination more effectively than HLS comprising alkyl moieties. Thus, HLS isolated from bagasse hydrochar had the highest bioactivity, as the presence of amphiphilic moieties therein seemed to facilitate the release of bioactive molecules from supramolecular structures and stimulate seed germination. Based on the above results, the hydrothermal carbonization of lignocellulosic biomass was concluded to be a viable method of producing amphiphilic HLS for use as plant growth promoters.
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Affiliation(s)
- Lucas Raimundo Bento
- Department of Chemistry and Environmental Sciences, São Paulo State University (UNESP), Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São José do Rio Preto, Brazil; Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare ed i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università, 100, 80055 Portici, Italy
| | - Camila Almeida Melo
- Department of Chemistry and Environmental Sciences, São Paulo State University (UNESP), Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São José do Rio Preto, Brazil
| | - Odair Pastor Ferreira
- Laboratório de Materiais Funcionais Avançados (LaMFA), Departamento de Física, Universidade Federal do Ceará, P.O. Box 3151, 60455-900 Fortaleza, Ceará, Brazil
| | - Altair Benedito Moreira
- Department of Chemistry and Environmental Sciences, São Paulo State University (UNESP), Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São José do Rio Preto, Brazil
| | - Stéphane Mounier
- Laboratoire MIO, CNRS-IRD-Université de Toulon-AMU - CS 60584, 83041 Toulon, Cedex 9, France
| | - Alessandro Piccolo
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare ed i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università, 100, 80055 Portici, Italy
| | - Riccardo Spaccini
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare ed i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università, 100, 80055 Portici, Italy
| | - Márcia Cristina Bisinoti
- Department of Chemistry and Environmental Sciences, São Paulo State University (UNESP), Institute of Biosciences, Humanities and Exact Sciences (IBILCE), São José do Rio Preto, Brazil.
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28
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Savy D, Brostaux Y, Cozzolino V, Delaplace P, du Jardin P, Piccolo A. Quantitative Structure-Activity Relationship of Humic-Like Biostimulants Derived From Agro-Industrial Byproducts and Energy Crops. FRONTIERS IN PLANT SCIENCE 2020; 11:581. [PMID: 32528492 PMCID: PMC7264396 DOI: 10.3389/fpls.2020.00581] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 04/17/2020] [Indexed: 05/13/2023]
Abstract
Humic-like substances (HLSs) isolated by alkaline oxidative hydrolysis from lignin-rich agro-industrial residues have been shown to exert biostimulant activity toward maize (Zea mays L.) germination and early growth. The definition of a quantitative structure-activity relationship (QSAR) between HLS and their bioactivity could be useful to predict their biological properties and tailor plant biostimulants for specific agronomic and industrial uses. Here, we created several projection on latent structure (PLS) regression by using published analytical data on the molecular composition of lignin-derived HLS obtained by both 13C-CPMAS-NMR spectra directly on samples and 31P-NMR spectra after derivatization of hydroxyl functions with a P-containing reagent (2-chloro-4,4,5,5-tetramethyl-1,3,2-dioxaphospholane). These spectral data were used to model the effect of HLS on the elongation of primary root, lateral seminal roots, total root apparatus, and coleoptile of maize. The 13C-CPMAS-NMR data suggested that methoxyl and aromatic moieties positively affected plant growth, while the carboxyl/esterified functions showed a negative impact on the overall seedling development. Alkyl C seems to promote Col elongation while concomitantly reducing that of the root system. Additionally, 31P-NMR-derived spectra revealed that the elongation of roots and Col were enhanced by the occurrence of aliphatic hydroxyl groups, and guaiacyl and p-Hydroxyphenyl lignin monomers. The PLS models based on raw dataset from 13C-CPMAS-NMR spectra explained more than 74% of the variance for the length of lateral seminal roots, total root system and coleoptile, while other parameters derived from 13C-CPMAS-NMR spectra, namely the Hydrophobicity and Hydrophilicity of materials were necessary to explain 83% of the variance of the primary root length. The results from 31P-NMR spectra explained the observed biological variance by 90, 96, 96, and 93% for the length of primary root, lateral seminal roots, total root system and coleoptile, respectively. This work shows that different NMR spectroscopy techniques can be used to build up PLS models which can predict the bioactivity of lignin-derived HLS toward early growth of maize plants. The established QSAR may also be exploited to enhance by chemical techniques the bioactive properties of HLS and enhance their plant stimulation capacity.
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Affiliation(s)
- Davide Savy
- Plant Sciences, Gembloux Agro-Bio Tech, University of Liège, Liège, Belgium
- *Correspondence: Davide Savy,
| | - Yves Brostaux
- Statistical Modelling and Development, Gembloux Agro-Bio Tech, University of Liège, Liège, Belgium
| | - Vincenza Cozzolino
- Interdepartmental Research Centre of Nuclear Magnetic Resonance for the Environment, Agri-Food and New Materials, University of Naples Federico II, Naples, Italy
- Department of Agricultural Sciences, Università di Napoli Federico II, Naples, Italy
| | - Pierre Delaplace
- Plant Sciences, Gembloux Agro-Bio Tech, University of Liège, Liège, Belgium
| | - Patrick du Jardin
- Plant Sciences, Gembloux Agro-Bio Tech, University of Liège, Liège, Belgium
| | - Alessandro Piccolo
- Interdepartmental Research Centre of Nuclear Magnetic Resonance for the Environment, Agri-Food and New Materials, University of Naples Federico II, Naples, Italy
- Department of Agricultural Sciences, Università di Napoli Federico II, Naples, Italy
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29
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Xu Z, Xu X, Tao X, Yao C, Tsang DCW, Cao X. Interaction with low molecular weight organic acids affects the electron shuttling of biochar for Cr(VI) reduction. JOURNAL OF HAZARDOUS MATERIALS 2019; 378:120705. [PMID: 31200222 DOI: 10.1016/j.jhazmat.2019.05.098] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/27/2019] [Accepted: 05/29/2019] [Indexed: 06/09/2023]
Abstract
Biochar can act as "electron shuttle" in soil redox reactions. It is possible that biochar accepts the electrons from low molecular weight organic acids (LMWOAs) in soil and then transfer them to the acceptors, e.g., Cr(VI). This study evaluated the interaction between seven soil LMWOAs and peanut shell biochar (BC) as well as its effect on the electron shuttling of biochar for Cr(VI) reduction. Both redox reactions and sorption process occurred during the interaction of biochar and LMWOAs, which altered the contents of Cr(VI) reduction-relevant groups (i.e., CO and CO) on the surface of biochar. The redox reactions were more important to the electron transfer between biochar produced at 400℃ (BC400) and LMWOAs due to the repeated cycle of reduction-oxidation of surface functional groups. The reduction rate of Cr(VI) by LMWOAs mediated by BC400 was 1.10-7.09 × 10-3 h-1, among which tartaric acid had the best reduction efficiency due to its highest reducing capability. For biochar produced at 700℃ (BC700), the sorption process of LMWOAs was the key factor to the direct electron shuttling process through the conjugated structure of biochar. The reduction rate of Cr(VI) by LMWOAs mediated by BC700 was significantly higher and ranged 7.40-864 × 10-3 h-1, with the oxalic acid having the best reduction efficiency due to its highest sorption capacity by BC700. The results obtained from this study can help to establish the linkage between biochar and LMWOAs in soil electron network, which better explains the multifunctional roles of biochar during the redox processes such as Cr(VI) reduction in soil.
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Affiliation(s)
- Zibo Xu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xiaoyun Xu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xinyi Tao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Chengbo Yao
- Department of Chemistry, Columbia University, 3000 Broadway, New York, NY, 10027, United States
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Xinde Cao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China.
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30
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Wang L, Li Y, Prasher SO, Yan B, Ou Y, Cui H, Cui Y. Organic matter, a critical factor to immobilize phosphorus, copper, and zinc during composting under various initial C/N ratios. BIORESOURCE TECHNOLOGY 2019; 289:121745. [PMID: 31323724 DOI: 10.1016/j.biortech.2019.121745] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 06/27/2019] [Accepted: 06/30/2019] [Indexed: 06/10/2023]
Abstract
The status of heavy metals and the P fractions in compost affects their environmental risk. The present study investigated the effects of different initial carbon to nitrogen (C/N) ratios (15, 22, 27) on redistribution of Cu, Zn, and P fractions during composting. The results showed that the composting process transformed Cu, Zn and P from mobile fractions to more stable fractions. Compost with an initial C/N of 22 showed the most effective immobilization of Cu, Zn and P because of yielding greatest degree of polymerization. Multivariate statistical analysis identified organic matter as the most critical factor for explaining the redistribution of Cu, Zn, and P fractions in composting. However, the degree of organic matter degradation (organic matter content and Humic acid/Fulvic acid) better explained the change of bioavailability factor for Cu and the mobility of P during composting. This research provided guidance for providing technology to reduce environmental risk in compost.
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Affiliation(s)
- Lixia Wang
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, PR China
| | - Yingxin Li
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, PR China; University of Chinese Academy of Sciences, Beijing 100109, PR China
| | - Shiv O Prasher
- Bioresource Engineering Department, Macdonald Campus, McGill University, Sainte-Anne- de-Bellevue, QC H9X 3V9, Canada
| | - Baixing Yan
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, PR China
| | - Yang Ou
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, PR China.
| | - Hu Cui
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, PR China; University of Chinese Academy of Sciences, Beijing 100109, PR China
| | - Yanru Cui
- Institute of Rural Energy and Ecology, Jilin Academy of Agricultural Sciences, Changchun 130033, PR China
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31
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Orlov AA, Zherebker A, Eletskaya AA, Chernikov VS, Kozlovskaya LI, Zhernov YV, Kostyukevich Y, Palyulin VA, Nikolaev EN, Osolodkin DI, Perminova IV. Examination of molecular space and feasible structures of bioactive components of humic substances by FTICR MS data mining in ChEMBL database. Sci Rep 2019; 9:12066. [PMID: 31427609 PMCID: PMC6700089 DOI: 10.1038/s41598-019-48000-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 07/29/2019] [Indexed: 01/08/2023] Open
Abstract
Humic substances (HS) are complex natural mixtures comprising a large variety of compounds produced during decomposition of decaying biomass. The molecular composition of HS is extremely diverse as it was demonstrated with the use of high resolution mass spectrometry. The building blocks of HS are mostly represented by plant-derived biomolecules (lignins, lipids, tannins, carbohydrates, etc.). As a result, HS show a wide spectrum of biological activity. Despite that, HS remain a 'biological activity black-box' due to unknown structures of constituents responsible for the interaction with molecular targets. In this study, we investigated the antiviral activity of eight HS fractions isolated from peat and coal, as well as of two synthetic humic-like materials. We determined molecular compositions of the corresponding samples using ultra-high resolution Fourier-transform ion cyclotron resonance mass-spectrometry (FTICR MS). Inhibitory activity of HS was studied with respect to reproduction of tick-borne encephalitis virus (TBEV), which is a representative of Flavivirus genus, and to a panel of enteroviruses (EVs). The samples of natural HS inhibited TBEV reproduction already at a concentration of 1 µg/mL, but they did not inhibit reproduction of EVs. We found that the total relative intensity of FTICR MS formulae within elemental composition range commonly attributed to flavonoid-like structures is correlating with the activity of the samples. In order to surmise on possible active structural components of HS, we mined formulae within FTICR MS assignments in the ChEMBL database. Out of 6502 formulae within FTICR MS assignments, 3852 were found in ChEMBL. There were more than 71 thousand compounds related to these formulae in ChEMBL. To support chemical relevance of these compounds to natural HS we applied the previously developed approach of selective isotopic exchange coupled to FTICR MS to obtain structural information on the individual components of HS. This enabled to propose compounds from ChEMBL, which corroborated the labeling data. The obtained results provide the first insight onto the possible structures, which comprise antiviral components of HS and, respectively, can be used for further disclosure of antiviral activity mechanism of HS.
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Affiliation(s)
- Alexey A Orlov
- FSBSI "Chumakov FSC R&D IBP RAS", Moscow, 108819, Russia
- Skolkovo Institute of Science and Technology, Moscow, 143026, Russia
- Department of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Alexander Zherebker
- Skolkovo Institute of Science and Technology, Moscow, 143026, Russia
- Department of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Anastasia A Eletskaya
- FSBSI "Chumakov FSC R&D IBP RAS", Moscow, 108819, Russia
- Department of Fundamental Medicine, Lomonosov Moscow State University, Moscow, 119991, Russia
| | | | - Liubov I Kozlovskaya
- FSBSI "Chumakov FSC R&D IBP RAS", Moscow, 108819, Russia
- Sechenov First Moscow State Medical University, Moscow, 119991, Russia
| | - Yury V Zhernov
- State Research Center "Institute of Immunology" of the Federal Medical-Biological Agency of Russia, Moscow, 115478, Russia
| | - Yury Kostyukevich
- Skolkovo Institute of Science and Technology, Moscow, 143026, Russia
| | - Vladimir A Palyulin
- Department of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Eugene N Nikolaev
- Skolkovo Institute of Science and Technology, Moscow, 143026, Russia
| | - Dmitry I Osolodkin
- FSBSI "Chumakov FSC R&D IBP RAS", Moscow, 108819, Russia.
- Department of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia.
- Sechenov First Moscow State Medical University, Moscow, 119991, Russia.
| | - Irina V Perminova
- Department of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia.
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Zherebker A, Perminova IV, Kostyukevich Y, Kononikhin AS, Kharybin O, Nikolaev E. Structural investigation of coal humic substances by selective isotopic exchange and high-resolution mass spectrometry. Faraday Discuss 2019; 218:172-190. [PMID: 31115412 DOI: 10.1039/c9fd00002j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Here, we report the application of a selective liquid-phase hydrogen/deuterium exchange (HDX) coupled to ultra-high resolution FTICR MS for structural investigations of individual constituents of humic substances (HS) isolated from three coal samples of different geographical origin. Selectivity was achieved by conducting reactions in DCl or NaOD solutions for catalyzing HDX in aromatic ring and side-chain positions with enhanced C-H acidity, respectively. FTICR MS analysis showed a significant overlap of molecular compositions in the HS samples under study, with 2000 common formulae. Using HDX, we demonstrated that the determined common formulae are presented by different structural isomers. We found that aromatic compounds varied both in the substitution pattern and the number of aromatic protons. Depending on the sample, lignin components with the same molecular formulae were composed of coumaryl, coniferyl or sinapyl moieties. Enumeration of HDX series for the 800 most abundant compounds showed that the results of HDX agreed well with the model structures suggested for humic components occupying a van Krevelen plot. In addition, we explored chemical transformations, which could connect individual constituents of coal HS. These transformations included hydrolysis of a guaiacyl moiety and reduction of a catechol unit, which corresponds to the conversion of a coniferyl fragment into a coumaryl unit. The obtained results were supportive of the hypothesis of the reducing humification pathway suggested for lignin transformation in the environment. The conclusion was made that the molecular ensemble of coal HS is composed of individual constituents produced at different humification stages.
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Affiliation(s)
- Alexander Zherebker
- Skolkovo Institute of Science and Technology, Skolkovo, Moscow Region, 143025, Russia.
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Vinci G, Mazzei P, Bridoux M, Drosos M, Piccolo A. Molecular characterization of organic matter in two calcareous soils: the effects of an acid decarbonation treatment. Anal Bioanal Chem 2019; 411:5243-5253. [DOI: 10.1007/s00216-019-01903-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 04/26/2019] [Accepted: 05/07/2019] [Indexed: 10/26/2022]
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Piccolo A, Spaccini R, De Martino A, Scognamiglio F, di Meo V. Soil washing with solutions of humic substances from manure compost removes heavy metal contaminants as a function of humic molecular composition. CHEMOSPHERE 2019; 225:150-156. [PMID: 30870632 DOI: 10.1016/j.chemosphere.2019.03.019] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 02/26/2019] [Accepted: 03/04/2019] [Indexed: 06/09/2023]
Abstract
Humic Substances (HS) from Leonardite and two different composts were used as biosurfactants to wash heavy metals (Cu, Pb, Zn, Cd, Cr) from a soil added with two metals concentrations and aged for 4 and 12 months. Composts were obtained by mixing manure with either 40 (CM-I) and 20 (CM-II) % of straw as structuring material. For both aging periods and both metal concentrations, HS from CM-I removed more metals than from Leonardite, whereas the washing capacity of HS from CM-II was negligible. 13C-CPMAS-NMR spectra of HS indicated that while aromatic moieties for CM-I and Leonardite were more abundant than CM-II, HS from CM-I was largest in carboxyl and phenolic carbons. Hence, HS from CM-I had a greater complexing capacity than from both Leonardite and CM-II and effectively displaced heavy metals from soil during the washing treatment. Moreover, the amount of metals removed by solutions of ammonium acetate (AA) and diethylenetriaminepentaacetic acid (DTPA), was found invariably smaller than by HS from CM-I, thereby indicating that HS removed more than one metal specie. The combined washing with HS from CM-I before and after soil treatment by either AA and DTPA revealed significant larger metal removals than by single solutions alone. This shows that humic soil washing also renders residual metals potentially more available to subsequent soil remediation approaches, such as phytoextraction. These results suggest a novel, efficient, and molecularly-based technology to remediate soils from heavy metals can be based on a low-cost and sustainable humic matter produced from recycled biomasses.
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Affiliation(s)
- Alessandro Piccolo
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agro-Alimentare ed i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy; Dipartimento di Agraria, Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy.
| | - Riccardo Spaccini
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agro-Alimentare ed i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy; Dipartimento di Agraria, Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy
| | - Antonio De Martino
- Dipartimento di Agraria, Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy
| | - Francesco Scognamiglio
- Dipartimento di Agraria, Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy
| | - Vincenzo di Meo
- Dipartimento di Agraria, Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy
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35
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Zanin L, Tomasi N, Cesco S, Varanini Z, Pinton R. Humic Substances Contribute to Plant Iron Nutrition Acting as Chelators and Biostimulants. FRONTIERS IN PLANT SCIENCE 2019; 10:675. [PMID: 31178884 PMCID: PMC6538904 DOI: 10.3389/fpls.2019.00675] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 05/06/2019] [Indexed: 05/03/2023]
Abstract
Improvement of plant iron nutrition as a consequence of metal complexation by humic substances (HS) extracted from different sources has been widely reported. The presence of humified fractions of the organic matter in soil sediments and solutions would contribute, depending on the solubility and the molecular size of HS, to build up a reservoir of Fe available for plants which exude metal ligands and to provide Fe-HS complexes directly usable by plant Fe uptake mechanisms. It has also been shown that HS can promote the physiological mechanisms involved in Fe acquisition acting at the transcriptional and post-transcriptional level. Furthermore, the distribution and allocation of Fe within the plant could be modified when plants were supplied with water soluble Fe-HS complexes as compared with other natural or synthetic chelates. These effects are in line with previous observations showing that treatments with HS were able to induce changes in root morphology and modulate plant membrane activities related to nutrient acquisition, pathways of primary and secondary metabolism, hormonal and reactive oxygen balance. The multifaceted action of HS indicates that soluble Fe-HS complexes, either naturally present in the soil or exogenously supplied to the plants, can promote Fe acquisition in a complex way by providing a readily available iron form in the rhizosphere and by directly affecting plant physiology. Furthermore, the possibility to use Fe-HS of different sources, size and solubility may be considered as an environmental-friendly tool for Fe fertilization of crops.
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Affiliation(s)
- Laura Zanin
- Dipartimento di Scienze AgroAlimentari, Ambientali e Animali, Università degli Studi di Udine, Udine, Italy
| | - Nicola Tomasi
- Dipartimento di Scienze AgroAlimentari, Ambientali e Animali, Università degli Studi di Udine, Udine, Italy
| | - Stefano Cesco
- Faculty of Science and Technology, Free University of Bozen-Bolzano, Bolzano, Italy
| | - Zeno Varanini
- Dipartimento di Biotecnologie, Università di Verona, Verona, Italy
| | - Roberto Pinton
- Dipartimento di Scienze AgroAlimentari, Ambientali e Animali, Università degli Studi di Udine, Udine, Italy
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Klucakova M, Smilek J, Sedlacek P. How Humic Acids Affect the Rheological and Transport Properties of Hydrogels. Molecules 2019; 24:E1545. [PMID: 31010124 PMCID: PMC6515218 DOI: 10.3390/molecules24081545] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 04/17/2019] [Accepted: 04/18/2019] [Indexed: 12/05/2022] Open
Abstract
Humic acids are often regarded as substances with a supramolecular structure which plays an important role in Nature. Their addition into hydrogels can affect their behavior and functioning in different applications. This work is focused on the properties of widely-used hydrogel based on agarose after addition of humic acids-the protonated H-form of humic acids and humic acids with methylated carboxylic groups. Hydrogels enriched by humic acids were studied in terms of their viscoelastic and transport properties. Rotational rheometry and methods employing diffusion cells were used in order to describe the influence of humic acids on the properties and behavior of hydrogels. From the point of view of rheology the addition of humic acids mainly affected the loss modulus corresponding to the relaxation of hydrogel connected with its flow. In the case of diffusion experiments, the transport of dyes (methylene blue and rhodamine) and metal ions (copper and nickel) through the hydrogel was affected by interactions between humic acids and the diffusion probes. The time lag in the hydrogel enriched by humic acids was prolonged for copper, methylene blue and rhodamine. In contrast, the presence of humic acids in hydrogel slightly increased the mobility of nickel. The strongest influence of the methylation of humic acids on diffusion was observed for methylene blue.
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Affiliation(s)
- Martina Klucakova
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkynova 118/464, 612 00 Brno, Czech Republic.
| | - Jiri Smilek
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkynova 118/464, 612 00 Brno, Czech Republic.
| | - Petr Sedlacek
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkynova 118/464, 612 00 Brno, Czech Republic.
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Zherebker A, Shirshin E, Kharybin O, Kostyukevich Y, Kononikhin A, Konstantinov AI, Volkov D, Roznyatovsky VA, Grishin YK, Perminova IV, Nikolaev E. Separation of Benzoic and Unconjugated Acidic Components of Leonardite Humic Material Using Sequential Solid-Phase Extraction at Different pH Values as Revealed by Fourier Transform Ion Cyclotron Resonance Mass Spectrometry and Correlation Nuclear Magnetic Resonance Spectroscopy. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:12179-12187. [PMID: 30335379 DOI: 10.1021/acs.jafc.8b04079] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Here, we report on sequential solid-phase extraction of leonardite hymatomelanic acid (CHM) on a non-ionic sorbent at four steadily lowered pH values: 7, 5, 3, and 2, yielding fractions with different acidic properties. Using nuclear magnetic resonance (NMR) spectroscopy and ultrahigh-resolution mass spectrometry, we revealed a gradual shift of dominating scaffolds in the fractions of CHM from reduced saturated to oxidized aromatic compounds. An increase on the average aromaticity of the CHM fractions was accompanied by a red shift in fluorescence spectra. These results were supported by heteronuclear single quantum coherence and heteronuclear multiple bond correlation NMR experiments. We have demonstrated that the CHM fraction isolated at pH 5 was dominated by aliphatic carboxyl carriers, while the pH 3 fraction was dominated by aromatic carboxyl acids. The developed fractionation technique will enable deeper insight on structure-property relationships and the design of the humic-based materials with tailored reactive properties.
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Affiliation(s)
- Alexander Zherebker
- Skolkovo Institute of Science and Technology , 143025 Skolkovo , Moscow Region, Russia
- Department of Chemistry , Lomonosov Moscow State University , 119991 Moscow , Russia
- Institute for Energy Problems of Chemical Physics of Russian Academy of Sciences , Leninskij Prospekt 38-2 , 119334 Moscow , Russia
| | - Evgeny Shirshin
- Department of Physics , Lomonosov Moscow State University , Leninskie Gory 1/2 , 119991 Moscow , Russia
| | - Oleg Kharybin
- Skolkovo Institute of Science and Technology , 143025 Skolkovo , Moscow Region, Russia
- Institute for Energy Problems of Chemical Physics of Russian Academy of Sciences , Leninskij Prospekt 38-2 , 119334 Moscow , Russia
| | - Yury Kostyukevich
- Skolkovo Institute of Science and Technology , 143025 Skolkovo , Moscow Region, Russia
- Institute for Energy Problems of Chemical Physics of Russian Academy of Sciences , Leninskij Prospekt 38-2 , 119334 Moscow , Russia
- Moscow Institute of Physics and Technology , 141700 Dolgoprudnyi , Moscow Region, Russia
| | - Alexey Kononikhin
- Institute for Energy Problems of Chemical Physics of Russian Academy of Sciences , Leninskij Prospekt 38-2 , 119334 Moscow , Russia
- Orekhovich Institute of Biomedical Chemistry , Russian Academy of Sciences , Pogodinskaya Ulitsa 10 , 119121 Moscow , Russia
- Moscow Institute of Physics and Technology , 141700 Dolgoprudnyi , Moscow Region, Russia
| | - Andrey I Konstantinov
- Department of Chemistry , Lomonosov Moscow State University , 119991 Moscow , Russia
| | - Dmitry Volkov
- Department of Chemistry , Lomonosov Moscow State University , 119991 Moscow , Russia
| | | | - Yuri K Grishin
- Department of Chemistry , Lomonosov Moscow State University , 119991 Moscow , Russia
| | - Irina V Perminova
- Department of Chemistry , Lomonosov Moscow State University , 119991 Moscow , Russia
| | - Eugene Nikolaev
- Skolkovo Institute of Science and Technology , 143025 Skolkovo , Moscow Region, Russia
- Institute for Energy Problems of Chemical Physics of Russian Academy of Sciences , Leninskij Prospekt 38-2 , 119334 Moscow , Russia
- Orekhovich Institute of Biomedical Chemistry , Russian Academy of Sciences , Pogodinskaya Ulitsa 10 , 119121 Moscow , Russia
- Moscow Institute of Physics and Technology , 141700 Dolgoprudnyi , Moscow Region, Russia
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Fischer T. Humic supramolecular structures have polar surfaces and unpolar cores in native soil. CHEMOSPHERE 2017; 183:437-443. [PMID: 28558352 DOI: 10.1016/j.chemosphere.2017.05.125] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 05/08/2017] [Accepted: 05/21/2017] [Indexed: 06/07/2023]
Abstract
It was the aim of our study to prove the hypothesis that humic substances (HS) in native soil are spatially arranged in descending order of polarity, meaning that highly polar supramolecular subunits shield less polar subunits against the free soil solution and form layers of descending polarity. To address this aim, we consecutively extracted humic substances from soil with 8 M (HS1), 4 M (HS2), 2 M (HS3), 1 M (HS4) and 0.5 M LiCl (HS5) solution in 0.2 M LiOH after Cu2+ adsorption in batch soil column experiments. Adsorption was performed for 1, 10 and 60 min with concentrations ranging from 9.5 to 110 mg L-1 Cu2+ in 0.02 M CaCl2 solution. We assumed that high ionic strength facilitates extraction of most polar organic compounds, with polarity of the extracted HS decreasing with decreasing ionic strength, and that Cu extracted together with the successive HS solely formed coordination complexes, facilitating its use as a tracer for organic matter studies. We hypothesized a delayed Cu adsorption on the less polar fractions in case of spatial shielding due to interception on overlying fractions, and a concurrent Cu adsorption in case of random spatial arrangement. It was concluded that humic substances are shielded against each other in the order of descending polarity of the supramolecular subunits (free soil solution | HS1 | HS2 | HS3 | HS4 | HS5).
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Affiliation(s)
- Thomas Fischer
- Brandenburg University of Technology Cottbus-Senftenberg, Central Analytical Laboratory, Konrad-Wachsmann-Allee 6, 03046, Cottbus, Germany.
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Drosos M, Nebbioso A, Mazzei P, Vinci G, Spaccini R, Piccolo A. A molecular zoom into soil Humeome by a direct sequential chemical fractionation of soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 586:807-816. [PMID: 28214121 DOI: 10.1016/j.scitotenv.2017.02.059] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 02/07/2017] [Accepted: 02/07/2017] [Indexed: 05/26/2023]
Abstract
A Humeomics sequential chemical fractionation coupled to advanced analytical identification was applied directly to soil for the first time. Humeomics extracted ~235% more soil organic carbon (SOC) than by the total alkaline extraction traditionally employed to solubilise soil humic molecules (soil Humeome). Seven fractions of either hydro- or organo-soluble components and a final unextractable humic residue were separated from soil. These materials enabled an unprecedented structural identification of solubilised heterogeneous humic molecules by combining NMR, GC-MS, and ESI-Orbitrap-MS. Identified molecules and their relative abundance were used to build up structure-based van Krevelen plots to show the specific contribution of each fraction to SOC. The stepwise isolation of mostly hydrophobic and unsaturated molecules of progressive structural complexity suggests that humic suprastructures in soil are arranged in multi-molecular layers. These comprised molecules either hydrophobically adsorbed on soil aluminosilicate surfaces in less stable fractions, or covalently bound in amorphous organo-iron complexes in more recalcitrant fractions. Moreover, most lipid molecules of the soil Humeome appeared to derive from plant polyesters rather than bacterial metabolism. An advanced understanding of soil humic molecular composition by Humeomics may enable control of the bio-organic dynamics and reactivity in soil.
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Affiliation(s)
- Marios Drosos
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare ed i Nuovi Materiali (CERMANU), Università di Napoli "Federico II", via Università 100, 80055 Portici, Italy.
| | - Antonio Nebbioso
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare ed i Nuovi Materiali (CERMANU), Università di Napoli "Federico II", via Università 100, 80055 Portici, Italy.
| | - Pierluigi Mazzei
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare ed i Nuovi Materiali (CERMANU), Università di Napoli "Federico II", via Università 100, 80055 Portici, Italy.
| | - Giovanni Vinci
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare ed i Nuovi Materiali (CERMANU), Università di Napoli "Federico II", via Università 100, 80055 Portici, Italy.
| | - Riccardo Spaccini
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare ed i Nuovi Materiali (CERMANU), Università di Napoli "Federico II", via Università 100, 80055 Portici, Italy.
| | - Alessandro Piccolo
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare ed i Nuovi Materiali (CERMANU), Università di Napoli "Federico II", via Università 100, 80055 Portici, Italy.
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Zherebker A, Kostyukevich Y, Kononikhin A, Kharybin O, Konstantinov AI, Zaitsev KV, Nikolaev E, Perminova IV. Enumeration of carboxyl groups carried on individual components of humic systems using deuteromethylation and Fourier transform mass spectrometry. Anal Bioanal Chem 2017; 409:2477-2488. [PMID: 28138744 DOI: 10.1007/s00216-017-0197-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 12/20/2016] [Accepted: 01/09/2017] [Indexed: 10/20/2022]
Abstract
Here, we report a novel approach to enumeration of carboxylic groups carried by individual molecules of humic substances using selective chemical modification and isotopic labeling (deuteromethylation) and high-resolution electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI FTICR MS). Esterification was conducted with a use of thionyl chloride-deuteromethanol reagent under mild conditions to avoid transesterification. The deuteromethylated products were subjected to solid phase extraction using PPL Bond Elute cartridges prior to FTICR MS analysis. An amount of carboxyl groups in the individual molecular component was estimated from the length of identified deuteromethylation series. The method allowed for discerning between compounds with close elemental compositions possessing different protolytic properties. We found that different carboxylic moieties occupy distinct regions in molecular space of humic substances (HS) projected onto Van Krevelen diagram. These locations do not depend on the source of the humic material and can be assigned to carboxyl-rich alicyclic molecules (5 to 6 COOH), hydrolyzable tannins (3-4 COOH), lignins (1 to 2 COOH), condensed tannins and lignans (0 to 1 COOH), and carbohydrates (0 COOH). At the same time, the alignment pattern of these carboxylated species along the structural evolution lines in Van Krevelen diagrams was characteristic to the specific transformation processes undergone by the humic materials in the different environments. The obtained data enable mapping of molecular ensemble of HS with regards to their specific acidic compartments and might be used for directed fractionation of HS. Graphical abstract Selective isotopic labeling followed by FTICR MS enables discerning between humic molecules with close elemental compositions carrying different numbers of carboxylic groups.
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Affiliation(s)
- Alexander Zherebker
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, 119991, Moscow, Russia
| | - Yury Kostyukevich
- Skolkovo Institute of Science and Technology, 143025, Skolkovo, Moscow Region, Russia.,Orekhovich Institute of Biomedical Chemistry, Russian Academy of Medical Sciences, ul. Pogodinskaya 10, 119121, Moscow, Russia.,Institute for Energy Problems of Chemical Physics of RAS, Leninskij pr. 38-2, 119334, Moscow, Russia.,Moscow Institute of Physics and Technology, 9, Institutskii per., 141700, Dolgoprudnyi, Moscow Region, Russia
| | - Alexey Kononikhin
- Orekhovich Institute of Biomedical Chemistry, Russian Academy of Medical Sciences, ul. Pogodinskaya 10, 119121, Moscow, Russia.,Institute for Energy Problems of Chemical Physics of RAS, Leninskij pr. 38-2, 119334, Moscow, Russia.,Moscow Institute of Physics and Technology, 9, Institutskii per., 141700, Dolgoprudnyi, Moscow Region, Russia
| | - Oleg Kharybin
- Skolkovo Institute of Science and Technology, 143025, Skolkovo, Moscow Region, Russia.,Moscow Institute of Physics and Technology, 9, Institutskii per., 141700, Dolgoprudnyi, Moscow Region, Russia
| | - Andrey I Konstantinov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, 119991, Moscow, Russia
| | - Kirill V Zaitsev
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, 119991, Moscow, Russia
| | - Eugene Nikolaev
- Skolkovo Institute of Science and Technology, 143025, Skolkovo, Moscow Region, Russia. .,Orekhovich Institute of Biomedical Chemistry, Russian Academy of Medical Sciences, ul. Pogodinskaya 10, 119121, Moscow, Russia. .,Institute for Energy Problems of Chemical Physics of RAS, Leninskij pr. 38-2, 119334, Moscow, Russia. .,Moscow Institute of Physics and Technology, 9, Institutskii per., 141700, Dolgoprudnyi, Moscow Region, Russia.
| | - Irina V Perminova
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, 119991, Moscow, Russia.
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41
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Sun J, Drosos M, Mazzei P, Savy D, Todisco D, Vinci G, Pan G, Piccolo A. The molecular properties of biochar carbon released in dilute acidic solution and its effects on maize seed germination. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 576:858-867. [PMID: 27833063 DOI: 10.1016/j.scitotenv.2016.10.095] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 10/12/2016] [Accepted: 10/13/2016] [Indexed: 05/04/2023]
Abstract
It is not yet clear whether the carbon released from biochar in the soil solution stimulates biological activities. Soluble fractions (AQU) from wheat and maize biochars, whose molecular content was thoroughly characterized by FTIR, 13C and 1H NMR, and high-resolution ESI-IT-TOF-MS, were separated in dilute acidic solution to simulate soil rhizospheric conditions and their effects evaluated on maize seeds germination activity. Elongation of maize-seeds coleoptile was significantly promoted by maize biochar AQU, whereas it was inhibited by wheat biochar AQU. Both AQU fractions contained relatively small heterocyclic nitrogen compounds, whose structures were accounted by their spectroscopic properties. Point-of-Zero-Charge (PZC) values and van Krevelen plots of identified masses of soluble components suggested that the dissolved carbon from maize biochar behaved as humic-like supramolecular material capable to adhere to seedlings and deliver bioactive molecules. These findings contribute to understand the biostimulation potential of biochars from crop biomasses when applied in agricultural production.
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Affiliation(s)
- Jingling Sun
- Institute of Resource, Ecosystem and Environment of Agriculture, Center of Agricultural and Climate Change, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, PR China; Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare ed i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy.
| | - Marios Drosos
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare ed i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy.
| | - Pierluigi Mazzei
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare ed i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy.
| | - Davide Savy
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare ed i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy.
| | - Daniele Todisco
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare ed i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy.
| | - Giovanni Vinci
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare ed i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy.
| | - Genxing Pan
- Institute of Resource, Ecosystem and Environment of Agriculture, Center of Agricultural and Climate Change, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, PR China.
| | - Alessandro Piccolo
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l'Ambiente, l'Agroalimentare ed i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università 100, 80055 Portici, Italy.
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42
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Zhernov YV, Kremb S, Helfer M, Schindler M, Harir M, Mueller C, Hertkorn N, Avvakumova NP, Konstantinov AI, Brack-Werner R, Schmitt-Kopplin P, Perminova IV. Supramolecular combinations of humic polyanions as potent microbicides with polymodal anti-HIV-activities. NEW J CHEM 2017. [DOI: 10.1039/c6nj00960c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Anti-HIV potency of humic PAs is governed by scaffolds diversity.
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Affiliation(s)
- Yury V. Zhernov
- State Research Center “Institute of Immunology” of the Federal Medical-Biological Agency of Russia
- Moscow
- Russia
| | - Stephan Kremb
- Institute of Virology, Helmholtz Zentrum München – German Research Center for Environmental Health
- Neuherberg
- Germany
| | - Markus Helfer
- Institute of Virology, Helmholtz Zentrum München – German Research Center for Environmental Health
- Neuherberg
- Germany
| | - Michael Schindler
- University Hospital Tübingen
- Institute for Medical Virology and Epidemiology of Viral Diseases
- Tübingen
- Germany
| | - Mourad Harir
- Research Unit Analytical BioGeoChemistry
- Helmholtz Zentrum München – German Research Center for Environmental Health
- Neuherberg
- Germany
| | - Constanze Mueller
- Research Unit Analytical BioGeoChemistry
- Helmholtz Zentrum München – German Research Center for Environmental Health
- Neuherberg
- Germany
| | - Norbert Hertkorn
- Research Unit Analytical BioGeoChemistry
- Helmholtz Zentrum München – German Research Center for Environmental Health
- Neuherberg
- Germany
| | - Nadezhda P. Avvakumova
- Samara State Medical University
- Department of General, Bioinorganic and Bioorganic Chemistry
- Samara
- Russia
| | | | - Ruth Brack-Werner
- Institute of Virology, Helmholtz Zentrum München – German Research Center for Environmental Health
- Neuherberg
- Germany
| | - Philippe Schmitt-Kopplin
- Research Unit Analytical BioGeoChemistry
- Helmholtz Zentrum München – German Research Center for Environmental Health
- Neuherberg
- Germany
- Technical University of Munich
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43
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Berto S, De Laurentiis E, Tota T, Chiavazza E, Daniele PG, Minella M, Isaia M, Brigante M, Vione D. Properties of the humic-like material arising from the photo-transformation of L-tyrosine. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 545-546:434-444. [PMID: 26748008 DOI: 10.1016/j.scitotenv.2015.12.047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 12/10/2015] [Accepted: 12/10/2015] [Indexed: 06/05/2023]
Abstract
The UVB photolysis of L-tyrosine yields species with fluorescence and absorption spectra that are very similar to those of humic substances. By potentiometric measurements, chemical modeling and the application of NMR, mass spectrometry and laser flash photolysis, it was possible to get insights into the structural and chemical properties of the compounds derived by the L-tyrosine phototransformation. The photolytic process follows aromatic-ring hydroxylation and dimerization. The latter is presumably linked with the photoinduced generation of tyrosyl (phenoxy-type) radicals, which have a marked tendency to dimerize and possibly oligomerize. Interestingly, photoinduced transformation gives compounds with protogenic and complexation capabilities similar to those of the humic substances that occur naturally in surface waters. This finding substantiates a new and potentially important abiotic (photolytic) pathway for the formation of humic compounds in surface-water environments.
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Affiliation(s)
- Silvia Berto
- Università di Torino, Dipartimento Chimica, via P. Giuria, 7, 10125 Torino, Italy.
| | - Elisa De Laurentiis
- Università di Torino, Dipartimento Chimica, via P. Giuria, 7, 10125 Torino, Italy
| | - Tiziana Tota
- Università di Torino, Dipartimento Chimica, via P. Giuria, 7, 10125 Torino, Italy
| | - Enrico Chiavazza
- Università di Torino, Dipartimento Chimica, via P. Giuria, 7, 10125 Torino, Italy
| | | | - Marco Minella
- Università di Torino, Dipartimento Chimica, via P. Giuria, 7, 10125 Torino, Italy
| | - Marco Isaia
- Università di Torino, Dipartimento di Scienze della Vita e Biologia dei Sistemi, Via Accademia Albertina 13, Torino 10123, Italy
| | - Marcello Brigante
- Clermont Université, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand, BP 10448, F-63000 Clermont-Ferrand, France; CNRS, UMR 6296, ICCF, BP 80026, F-63177 Aubière, France
| | - Davide Vione
- Università di Torino, Dipartimento Chimica, via P. Giuria, 7, 10125 Torino, Italy.
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Cao X, Drosos M, Leenheer JA, Mao J. Secondary Structures in a Freeze-Dried Lignite Humic Acid Fraction Caused by Hydrogen-Bonding of Acidic Protons with Aromatic Rings. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:1663-1669. [PMID: 26836017 DOI: 10.1021/acs.est.5b02859] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A lignite humic acid (HA) was separated from inorganic and non-HA impurities (i.e., aluminosilicates, metals) and fractionated by a combination of dialysis and XAD-8 resin. Fractionation revealed a more homogeneous structure of lignite HA. New and more specific structural information on the main lignite HA fraction is obtained by solid-state nuclear magnetic resonance (NMR) spectroscopy. Quantitative (13)C multiple cross-polarization (multiCP) NMR indicated oxidized phenyl propane structures derived from lignin. MultiCP experiments, conducted on potassium HA salts titrated to pH 10 and pH 12, revealed shifts consistent with carboxylate and phenolate formation, but structural changes associated with enolate formation from aromatic beta keto acids were not detected. Two-dimensional (1)H-(13)C heteronuclear correlation (2D HETCOR) NMR indicated aryl-aliphatic ketones, aliphatic and aromatic carboxyl groups, phenol, and methoxy phenyl ethers. Acidic protons from carboxyl groups in both the lignite HA fraction and a synthetic HA-like polycondensate were found to be hydrogen-bonded with electron-rich aromatic rings. Our results coupled with published infrared spectra provide evidence for the preferential hydrogen bonding of acidic hydrogens with electron-rich aromatic rings rather than adjacent carbonyl groups. These hydrogen-bonding interactions likely result from stereochemical arrangements in primary structures and folding.
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Affiliation(s)
- Xiaoyan Cao
- Department of Chemistry and Biochemistry, Old Dominion University , 4541 Hampton Blvd, Norfolk, Virginia 23529, United States
| | - Marios Drosos
- Centro Interdipartimentale di Ricerca sulla Risonanza Magnetica Nucleare per l' Ambiente, l' Agroalimentare ed i Nuovi Materiali (CERMANU), Università di Napoli "Federico II", Via Università 100, 80055 Portici, Italy
| | - Jerry A Leenheer
- 4024 Douglas Mountain Drive, Golden, Colorado 80403, United States
| | - Jingdong Mao
- Department of Chemistry and Biochemistry, Old Dominion University , 4541 Hampton Blvd, Norfolk, Virginia 23529, United States
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45
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García AC, de Souza LGA, Pereira MG, Castro RN, García-Mina JM, Zonta E, Lisboa FJG, Berbara RLL. Structure-Property-Function Relationship in Humic Substances to Explain the Biological Activity in Plants. Sci Rep 2016; 6:20798. [PMID: 26862010 PMCID: PMC4748406 DOI: 10.1038/srep20798] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 01/12/2016] [Indexed: 11/25/2022] Open
Abstract
Knowledge of the structure-property-function relationship of humic substances (HSs) is key for understanding their role in soil. Despite progress, studies on this topic are still under discussion. We analyzed 37 humic fractions with respect to their isotopic composition, structural characteristics, and properties responsible for stimulating plant root parameters. We showed that regardless of the source of origin of the carbon (C3 or C4), soil-extracted HSs and humic acids (HAs) are structurally similar to each other. The more labile and functionalized HS fraction is responsible for root emission, whereas the more recalcitrant and less functionalized HA fraction is related to root growth. Labile structures promote root stimulation at lower concentrations, while recalcitrant structures require higher concentrations to promote a similar stimulus. These findings show that lability and recalcitrance, which are derived properties of humic fractions, are related to the type and intensity of their bioactivity. In summary, the comparison of humic fractions allowed a better understanding of the relationship between the source of origin of plant carbon and the structure, properties, and type and intensity of the bioactivity of HSs in plants. In this study, scientific concepts are unified and the basis for the agronomic use of HSs is established.
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Affiliation(s)
- Andrés Calderín García
- Federal Rural University of Rio de Janeiro, Soil Science Dept. Rodovia BR 465 km 7, Seropédica, RJ, CEP 23890-000, Brazil
| | | | - Marcos Gervasio Pereira
- Federal Rural University of Rio de Janeiro, Soil Science Dept. Rodovia BR 465 km 7, Seropédica, RJ, CEP 23890-000, Brazil
| | - Rosane Nora Castro
- Federal Rural University of Rio de Janeiro, Chemistry Department, Rodovia BR 465 km 7, Seropédica, RJ, CEP 23890-000, Brazil
| | - José María García-Mina
- Department of Environmental Biology, Agricultural Chemistry and Biology Group-CMI Roullier, Faculty of Sciences, University of Navarra, Pamplona, Navarra 31008, Spain
| | - Everaldo Zonta
- Federal Rural University of Rio de Janeiro, Soil Science Dept. Rodovia BR 465 km 7, Seropédica, RJ, CEP 23890-000, Brazil
| | - Francy Junior Gonçalves Lisboa
- Federal Rural University of Rio de Janeiro, Soil Science Dept. Rodovia BR 465 km 7, Seropédica, RJ, CEP 23890-000, Brazil
| | - Ricardo Luis Louro Berbara
- Federal Rural University of Rio de Janeiro, Soil Science Dept. Rodovia BR 465 km 7, Seropédica, RJ, CEP 23890-000, Brazil
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46
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Esfahani MR, Stretz HA, Wells MJM. Abiotic reversible self-assembly of fulvic and humic acid aggregates in low electrolytic conductivity solutions by dynamic light scattering and zeta potential investigation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 537:81-92. [PMID: 26282742 DOI: 10.1016/j.scitotenv.2015.08.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 08/01/2015] [Accepted: 08/01/2015] [Indexed: 05/19/2023]
Abstract
The aggregation of humic substances and their interaction with filtration media (membranes, soils) has implications for our understanding of membrane fouling during water treatment, the facilitated transport of contaminants, and the transport of organic matter through the microbial loop. To investigate the aggregation of fulvic and humic acids in low electrolytic conductivity solutions, laboratory studies of simulated environmental water samples as well as actual environmental water samples were examined. Intensity-, volume-, and number-based particle size distributions (PSDs) were obtained by dynamic light scattering. Aggregates were categorized into three ranges, i.e., 10-100 nm, 100-1000 nm, and >1 μm. Individual biomacromolecules and the aggregates between 10 nm and 1 μm were presumed to be precursors for the formation of a large 5-μm-sized-particle. The self-assembly of the large-in-volume, few-in-number, 5-μm-sized particle was observed in real-time and occurred in unfiltered samples and in samples filtered (0.45 μm) at a nominal size one order of magnitude smaller. The supramicrometer-sized particle formed, dissipated, and spontaneously re-formed over turbulent/quiescent cycles in the presence of sodium azide indicating reversible abiotic self-assembly. Zeta potential analyses demonstrated that colloidal stability increased as concentration increased. DLS studies of the environmental water samples were comparable to those of the simulated laboratory samples. The operational range of the instrumentation used in these experiments was 0.6 nm-6 μm; therefore, aggregates larger than 6 μm may exist in these solutions.
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Affiliation(s)
- Milad Rabbani Esfahani
- Department of Chemical Engineering, Tennessee Technological University, Cookeville, TN 38505, United States; Center for the Management, Utilization and Protection of Water Resources, Tennessee Technological University, Cookeville, TN 38505, United States
| | - Holly A Stretz
- Department of Chemical Engineering, Tennessee Technological University, Cookeville, TN 38505, United States
| | - Martha J M Wells
- EnviroChem Services, 224 Windsor Drive, Cookeville, TN 38506, United States.
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Redmile-Gordon MA, Evershed RP, Kuhl A, Armenise E, White RP, Hirsch PR, Goulding KW, Brookes PC. Engineering soil organic matter quality: Biodiesel Co-Product (BCP) stimulates exudation of nitrogenous microbial biopolymers. GEODERMA 2015; 259-260:205-212. [PMID: 26635420 PMCID: PMC4550076 DOI: 10.1016/j.geoderma.2015.06.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Revised: 06/01/2015] [Accepted: 06/07/2015] [Indexed: 05/31/2023]
Abstract
Biodiesel Co-Product (BCP) is a complex organic material formed during the transesterification of lipids. We investigated the effect of BCP on the extracellular microbial matrix or 'extracellular polymeric substance' (EPS) in soil which is suspected to be a highly influential fraction of soil organic matter (SOM). It was hypothesised that more N would be transferred to EPS in soil given BCP compared to soil given glycerol. An arable soil was amended with BCP produced from either 1) waste vegetable oils or 2) pure oilseed rape oil, and compared with soil amended with 99% pure glycerol; all were provided with 15N labelled KNO3. We compared transfer of microbially assimilated 15N into the extracellular amino acid pool, and measured concomitant production of exopolysaccharide. Following incubation, the 15N enrichment of total hydrolysable amino acids (THAAs) indicated that intracellular anabolic products had incorporated the labelled N primarily as glutamine and glutamate. A greater proportion of the amino acids in EPS were found to contain 15N than those in the THAA pool, indicating that the increase in EPS was comprised of bioproducts synthesised de novo. Moreover, BCP had increased the EPS production efficiency of the soil microbial community (μg EPS per unit ATP) up to approximately double that of glycerol, and caused transfer of 21% more 15N from soil solution into EPS-amino acids. Given the suspected value of EPS in agricultural soils, the use of BCP to stimulate exudation is an interesting tool to consider in the theme of delivering sustainable intensification.
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Affiliation(s)
- Marc A. Redmile-Gordon
- Dept. of Sustainable Soils and Grassland Systems, Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, UK
- Organic Geochemistry Unit, Bristol Biogeochemistry Research Centre, School of Chemistry, University of Bristol, BS8 1TS, UK
| | - Richard P. Evershed
- Organic Geochemistry Unit, Bristol Biogeochemistry Research Centre, School of Chemistry, University of Bristol, BS8 1TS, UK
| | - Alison Kuhl
- Organic Geochemistry Unit, Bristol Biogeochemistry Research Centre, School of Chemistry, University of Bristol, BS8 1TS, UK
| | - Elena Armenise
- School of Energy, Environment and Agrifood, Building 52a, Cranfield University, Cranfield, Bedfordshire MK43 0AL, UK
| | - Rodger P. White
- Dept. of Sustainable Soils and Grassland Systems, Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, UK
| | - Penny R. Hirsch
- Dept. of Sustainable Soils and Grassland Systems, Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, UK
| | - Keith W.T. Goulding
- Dept. of Sustainable Soils and Grassland Systems, Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, UK
| | - Philip C. Brookes
- Dept. of Sustainable Soils and Grassland Systems, Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, UK
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48
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Modification of chemical and conformational properties of natural organic matter by click chemistry as revealed by ESI-Orbitrap mass spectrometry. Anal Bioanal Chem 2015; 407:8515-23. [DOI: 10.1007/s00216-015-9005-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 08/06/2015] [Accepted: 08/25/2015] [Indexed: 10/23/2022]
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49
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Mazzei P, Piccolo A. Interactions between natural organic matter and organic pollutants as revealed by NMR spectroscopy. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2015; 53:667-678. [PMID: 25783763 DOI: 10.1002/mrc.4209] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 12/13/2014] [Accepted: 12/16/2014] [Indexed: 06/04/2023]
Abstract
Natural organic matter (NOM) plays a critical role in regulating the transport and the fate of organic contaminants in the environment. NMR spectroscopy is a powerful technique for the investigation of the sorption and binding mechanisms between NOM and pollutants, as well as their mutual chemical transformations. Despite NMR relatively low sensibility but due to its wide versatility to investigating samples in the liquid, gel, and solid phases, NMR application to environmental NOM-pollutants relations enables the achievement of specific and complementary molecular information. This report is a brief outline of the potentialities of the different NMR techniques and pulse sequences to elucidate the interactions between NOM and organic pollutants, with and without their labeling with nuclei that enhance NMR sensitivity.
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Affiliation(s)
- Pierluigi Mazzei
- Centro Interdipartimentale per la Risonanza Magnetica Nucleare per l'Ambiente, l'Agro-Alimentare ed i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università 100, 80055, Portici, Italy
| | - Alessandro Piccolo
- Centro Interdipartimentale per la Risonanza Magnetica Nucleare per l'Ambiente, l'Agro-Alimentare ed i Nuovi Materiali (CERMANU), Università di Napoli Federico II, Via Università 100, 80055, Portici, Italy
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50
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Size dependence of gold nanoparticle interactions with a supported lipid bilayer: A QCM-D study. Biophys Chem 2015; 203-204:51-61. [DOI: 10.1016/j.bpc.2015.05.006] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 03/18/2015] [Accepted: 05/06/2015] [Indexed: 11/17/2022]
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