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Zhu G, Shang J, Wen W, Li Y, Yin G. Multilamellar spherical micelles of alkali lignin: dissipative particle dynamics simulations. J Mol Model 2023; 29:33. [PMID: 36622451 DOI: 10.1007/s00894-023-05442-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 01/02/2023] [Indexed: 01/10/2023]
Abstract
CONTEXT Lignin has an immense potential for the production of lignin-based functional materials. In this work, effect of 2-chloro-ethyltrimethyl ammonium chloride (AC)-grafted alkali lignin (AL) on the morphologies in water was investigated by dissipative particle dynamics (DPD) simulations. The results showed that AL molecules formed spherical micelles, but the corresponding phenylpropane units of AL were randomly distributed in spherical micelles. However, AC-grafted modification of phenolic hydroxyl groups in AL led to the formation of multilamellar spherical micelles. The formation of multilamellar spherical micelles of AL mainly went through four stages: small clusters, larger aggregates with a core-shell structure, trilaminar, and multilamellar spherical micelles. AL molecules resulted in dimethomorph molecules being randomly distributed in the spherical micelle, while the dimethomorph molecules were perfectly entrapped into the spherical micelles of AC-grafted AL. Various molecular weights of AL had no effect on the formation and size of multilamellar spherical micelles. With increasing the content of AC-grafted AL, small clusters, multilamellar spherical micelles, tube-like, and lamellar aggregates were observed successively. This work highlights the potential of lignin to prepare monodispersed lignin-based functional colloidal spheres. METHODS Coarse-grained beads were performed energy minimization, geometric optimization, NPT ensemble (298 K and 1.0 bar), and NVT ensemble (298 K) calculations. DPD simulations were carried out at 300,000 steps in a 30×30×30 Rc3 cubic box with Materials Studio 7.0 program.
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Affiliation(s)
- Guodian Zhu
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China. .,Key Laboratory of Pulp and Paper Science and Technology of Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, China. .,Guangzhou Key Laboratory of Clean Transportation Energy Chemistry, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Jingqi Shang
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China
| | - Weihong Wen
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China
| | - Yuanyuan Li
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, China
| | - Guoqiang Yin
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China.
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Singh G, Ramadass K, Sooriyakumar P, Hettithanthri O, Vithange M, Bolan N, Tavakkoli E, Van Zwieten L, Vinu A. Nanoporous materials for pesticide formulation and delivery in the agricultural sector. J Control Release 2022; 343:187-206. [DOI: 10.1016/j.jconrel.2022.01.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/20/2022] [Accepted: 01/21/2022] [Indexed: 12/25/2022]
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Pérez-Landa I, Bonilla-Landa I, Monribot-Villanueva J, Ramírez-Vázquez M, Lasa R, Ramos-Torres W, Olivares-Romero J, Barrera-Méndez F. Photoprotection and release study of spinosad biopolymeric microparticles obtained by spray drying. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2020.08.096] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Enzymatic synthesis and tailoring lignin properties: A systematic study on the effects of plasticizers. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122725] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Moradi S, Shayesteh K, Behbudi G. Preparation and characterization of biodegradable lignin-sulfonate nanoparticles using the microemulsion method to enhance the acetylation efficiency of lignin-sulfonate. Int J Biol Macromol 2020; 160:632-641. [PMID: 32446897 DOI: 10.1016/j.ijbiomac.2020.05.157] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 05/16/2020] [Accepted: 05/18/2020] [Indexed: 12/21/2022]
Abstract
In this study, a novel method is presented for producing lignin-sulfonate nanoparticles. Then, the effect of produced nanoparticles is investigated on enhancing the acetylation efficiency. For these purposes, lignin-sulfonate was isolated from black-liquor of pulp-and-paper mill wastewater. Next, lignin-sulfonate nanoparticles were obtained using the oil-in-water (O/W) microemulsion, followed by modification of micro/nano-lignin-sulfonate particles. The physical, chemical, and morphological properties of lignin sulfonate micro/nanoparticles and modified forms of both samples were analyzed using FTIR, DLS, FE-SEM, AFM, 1H NMR, and 13CNMR analyses. Surface morphology revealed that the nanoparticles were homogenized and spherical with an average diameter of 25.5 nm. The chemical structure of the nanoparticles was similar to that of the microparticles. On the other hand, the chemical structure of acetylated lignin-sulfonate was slightly different from that of unmodified samples. The results also showed that the production of nano-lignin-sulfonate increased the acetylation efficiency and reduced the time and temperature of acetylation.
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Affiliation(s)
- Samira Moradi
- Department of Chemical Engineering, Faculty of Engineering, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Keivan Shayesteh
- Department of Chemical Engineering, Faculty of Engineering, University of Mohaghegh Ardabili, Ardabil, Iran.
| | - Gity Behbudi
- Department of Chemical Engineering, Faculty of Engineering, University of Mohaghegh Ardabili, Ardabil, Iran
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Huang Y, Hu Q, Cui G, Guo X, Wei B, Gan C, Li W, Mo D, Lu R, Cui J. Release-controlled microcapsules of thiamethoxam encapsulated in beeswax and their application in field. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2019; 55:342-354. [PMID: 31790325 DOI: 10.1080/03601234.2019.1697588] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Using beeswax as wrapping matrix, two types of release-controlled TM (thiamethoxam)/BK(beeswax-kaolin) microcapsules were prepared by adsorbing TM on kaolin and then encapsulated with beeswax, or directly wrapping TM with beeswax. The structure and morphology of the TM/BK microcapsules were characterized. The effects of different preparation methods, the particle size, pH conditions and different additives on the release property of the TM/BK microcapsules were investigated in water and soil column to compare the advantages of the two approaches. Finally, the insecticidal effect of the TM/BK microcapsules against sugarcane borer and rice planthopper was tested. The results show that the TM/BK microcapsules have a better sustained-release in both water and soil, and the release rate is different under different pH conditions. In addition, the releasing time of the TM/BK microcapsules can be modified by different preparation methods and combination of different additives. In the field applications, the insecticidal activity of the TM/BK microcapsules was better than that of non-sustained control group. Especially in the rice field test, 45 days after the application, the control group lost the activity against rice planthopper because of drug loss, whereas the TM/BK microcapsule group still retained about 90% of the insecticidal activity. The results suggest that the microcapsules have better agricultural application for insect control.
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Affiliation(s)
- Yanmin Huang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning, PR China
| | - Qiang Hu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning, PR China
| | - Guoqin Cui
- Guangxi Tianyuan Biochemical Co. Ltd, Nanning, PR China
| | - Xiaoyan Guo
- Guangxi Tianyuan Biochemical Co. Ltd, Nanning, PR China
| | - Bangzhi Wei
- Guangxi Tianyuan Biochemical Co. Ltd, Nanning, PR China
| | - Chunfang Gan
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning, PR China
| | - Weiguo Li
- Guangxi Tianyuan Biochemical Co. Ltd, Nanning, PR China
| | - Dongmei Mo
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning, PR China
| | - Rui Lu
- Guangxi Tianyuan Biochemical Co. Ltd, Nanning, PR China
| | - Jianguo Cui
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning, PR China
- College of petroleum and chemical Engineering, Beibuwan University, Qinzhou, PR China
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Cao L, Liu Y, Xu C, Zhou Z, Zhao P, Niu S, Huang Q. Biodegradable poly(3-hydroxybutyrate-co-4-hydroxybutyrate) microcapsules for controlled release of trifluralin with improved photostability and herbicidal activity. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 102:134-141. [PMID: 31146984 DOI: 10.1016/j.msec.2019.04.050] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 04/14/2019] [Accepted: 04/14/2019] [Indexed: 11/15/2022]
Abstract
Microencapsulation of pesticide is a promising technology to reduce the negative environmental impact and benefit the sustainable development. Trifluralin, commonly used as a selective pre-emergence herbicide, is vulnerably subject to loss by volatilization and decomposition by sunlight when applied to the surface of soils. In the present study, trifluralin has been encapsulated using biodegradable poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (PHB) polymers as carriers to develop controlled release formulations. PHB trifluralin microcapsules were obtained using a convenient solvent evaporation method. The influences of preparation parameters on the size and its distribution of the microcapsules were discussed. The particle size decreased from 4.44 μm to 2.50 μm as the shearing speeds increased from 4000 r/min to 12,000 r/min, and the value decreased from 3.64 μm to 3.23 μm as the mass fraction of emulsifier polyvinyl alcohol increased from 0.5% to 2.0%. The loading content (LC) as well as the encapsulation efficiency (EE) of trifluralin microcapsules are multiple factors dependent. Orthogonal table L9(34) was designed and range analysis was used to suggest the optimal preparation parameters. When performed under the optimized conditions, the corresponding LC and EE were 16.50% and 90.65%, respectively. The release of trifluralin from PHB microcapsules showed slow and sustained patterns, which could be easily achieved by modifying the preparation parameters including shearing speed and concentration of emulsifier. Compared to conventional trifluralin formulation of emulsifiable concentrate, trifluralin microcapsules exhibited significantly improved photostability and herbicidal activity against target weed barnyardgrass. These results demonstrated that microencapsulation with PHB could dramaticlly improve the effective utilization rate and decrease the dosage of such agricultural chemicals.
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Affiliation(s)
- Lidong Cao
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Haidian District, Beijing 100193, PR China
| | - Yajing Liu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Haidian District, Beijing 100193, PR China
| | - Chunli Xu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Haidian District, Beijing 100193, PR China
| | - Zhaolu Zhou
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Haidian District, Beijing 100193, PR China
| | - Pengyue Zhao
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Haidian District, Beijing 100193, PR China
| | - Shujun Niu
- Institute of Plant Protection, Gansu Academy of Agricultural Sciences, No. 1 Nongkeyuan New Village, An'ning District, Lanzhou 730070, PR China.
| | - Qiliang Huang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Haidian District, Beijing 100193, PR China.
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Houbraken M, Senaeve D, Dávila EL, Habimana V, De Cauwer B, Spanoghe P. Formulation approaches to reduce post-application pesticide volatilisation from glass surfaces. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 633:728-737. [PMID: 29602111 DOI: 10.1016/j.scitotenv.2018.03.186] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 03/15/2018] [Accepted: 03/16/2018] [Indexed: 06/08/2023]
Abstract
Volatilisation is one of the main pathways for pesticide emission to the atmosphere. While formulation strategies and adjuvants are known to affect the fate of active ingredient, no general volatilisation reducing guidelines exist for formulation purposes. Moreover, as limited information on formulation effects is available, current pesticide fate models lack parameters characterising reduction of active ingredient volatilisation. The objective of this study was to investigate the volatilisation reducing potential of formulation types and adjuvants, and to propose an effective vapour pressure for pesticide fate modelling. Several formulations of fenpropimorph, pyrimethanil and tebuconazole were produced and tested in a wind tunnel to evaluate the effect of formulation on active ingredient volatilisation. Produced emulsifiable concentrates with high volatile solvents did not offer any reduction in volatilisation, while the low volatile solvent reduced the volatilisation of pyrimethanil and fenpropimorph with 79.2 and 52.9%, respectively. The microemulsion reduced the volatilisation of fenpropimorph, pyrimethanil and tebuconazole with 57.6, 57.8 and 49.8%, respectively. High surfactant-active ingredient ratios (100:1) reduced the volatilisation of applied amount of pyrimethanil with 50%, on average. The effective vapour pressure of pyrimethanil formulated as a commercial available suspension concentrate was reduced by 33.8%. The commercial available emulsifiable concentrate did not reduce volatilisation of fenpropimorph. Effective vapour pressures of formulated fenpropimorph and pyrimethanil were determined and showed a high correlation with the amount volatilised within 48h. The saturated vapour pressure is useful when comparing the volatility of active ingredients, but effective vapour pressures are more appropriate to be used in pesticide fate models.
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Affiliation(s)
- Michael Houbraken
- Laboratory of Crop Protection Chemistry, Department of Crop Protection, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium.
| | - David Senaeve
- Laboratory of Crop Protection Chemistry, Department of Crop Protection, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Edelbis López Dávila
- Laboratory of Crop Protection Chemistry, Department of Crop Protection, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Valens Habimana
- Laboratory of Crop Protection Chemistry, Department of Crop Protection, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Benny De Cauwer
- Weed Science Unit, Department of Plant Production, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Pieter Spanoghe
- Laboratory of Crop Protection Chemistry, Department of Crop Protection, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
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Gao F, Yu S, Tao Q, Tan W, Duan L, Li Z, Cui H. Lignosulfonate Improves Photostability and Bioactivity of Abscisic Acid under Ultraviolet Radiation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:6585-6593. [PMID: 28851212 DOI: 10.1021/acs.jafc.7b02002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Abscisic acid (ABA), as a commonly used plant growth regulator, is easy to be degraded and lose its bioactivity under sunshine. To select an eco-friendly and efficient photoprotectant for the improvement of photostability and bioactivity of ABA when exposed to ultraviolet (UV) light, we tested the effects of three biodegradable natural-derived high polymers, sodium lignosulfonates 3A [molecular weight (MW) > 50000, with degree of sulfonation (DS) of 0.48] and NA (20000 < MW < 50000, with DS of 0.7) and calcium lignosulfonate CASA (MW < 20000, with DS of 0.7), on the photodegradation of ABA. Lignosulfonates 3A, NA, and CASA showed significant photostabilizing capability on ABA. Lignosulfonate 3A showed preferable photostabilizing effects on ABA compared to CASA, while NA showed an intermediate effect. That indicated that lignosulfonate with a high MW and low DS had a stronger UV absorption and the hollow aggregate micelles formatted by lignosulfonate protect ABA from UV damage. Approximately 50% more ABA was kept when 280 mg/L ABA aqueous solution was irradiated by UV light for 2 h in the presence of 2000 mg/L lignosulfonate 3A. The bioactivity on wheat (JIMAI 22) seed germination was greatly kept by 3A in comparison to that of ABA alone. The 300 times diluent of 280 mg/L ABA plus 2000 mg/L 3A after 2 h of irradiation showed 20.8, 19.3, and 9.3% more inhibition on shoot growth, root growth, and root numbers of wheat seed, separately, in comparison to ABA diluent alone. We conclude that lignosulfonate 3A was an eco-friendly and efficient agent to keep ABA activity under UV radiation. This research could be used in UV-sensitive and water-soluble agrichemicals and to optimize the application times and dosages of ABA products.
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Affiliation(s)
- Fei Gao
- Institute of Environment and Sustainable Development in Agriculture , Chinese Academy of Agricultural Sciences , Beijing 100081 , People's Republic of China
- State Key Laboratory of Plant Physiology and Biochemistry, Engineering Research Center of Plant Growth Regulators, Ministry of Education, College of Agronomy and Biotechnology , China Agricultural University , Beijing 100193 , People's Republic of China
| | - Sha Yu
- State Key Laboratory of Plant Physiology and Biochemistry, Engineering Research Center of Plant Growth Regulators, Ministry of Education, College of Agronomy and Biotechnology , China Agricultural University , Beijing 100193 , People's Republic of China
| | - Qun Tao
- State Key Laboratory of Plant Physiology and Biochemistry, Engineering Research Center of Plant Growth Regulators, Ministry of Education, College of Agronomy and Biotechnology , China Agricultural University , Beijing 100193 , People's Republic of China
| | - Weiming Tan
- State Key Laboratory of Plant Physiology and Biochemistry, Engineering Research Center of Plant Growth Regulators, Ministry of Education, College of Agronomy and Biotechnology , China Agricultural University , Beijing 100193 , People's Republic of China
| | - Liusheng Duan
- State Key Laboratory of Plant Physiology and Biochemistry, Engineering Research Center of Plant Growth Regulators, Ministry of Education, College of Agronomy and Biotechnology , China Agricultural University , Beijing 100193 , People's Republic of China
| | - Zhaohu Li
- State Key Laboratory of Plant Physiology and Biochemistry, Engineering Research Center of Plant Growth Regulators, Ministry of Education, College of Agronomy and Biotechnology , China Agricultural University , Beijing 100193 , People's Republic of China
| | - Haixin Cui
- Institute of Environment and Sustainable Development in Agriculture , Chinese Academy of Agricultural Sciences , Beijing 100081 , People's Republic of China
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Commentary: Making Green Pesticides Greener? The Potential of Plant Products for Nanosynthesis and Pest Control. J CLUST SCI 2016. [DOI: 10.1007/s10876-016-1131-7] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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