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Patil RD, Karandikar PS, Bendre RS. A greener approach for controlled release of Fenvalerate insecticide from renewable polymer thymol-formaldehyde-based encapsulated formulation. Colloid Polym Sci 2023. [DOI: 10.1007/s00396-023-05070-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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2
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Liang Y, Wang S, Yao Y, Yu S, Li A, Wang Y, Song J, Huo Z. Degradable Self-Destructive Redox-Responsive System Based on Mesoporous Organosilica Nano-Vehicles for Smart Delivery of Fungicide. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12234249. [PMID: 36500872 PMCID: PMC9741037 DOI: 10.3390/nano12234249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 11/24/2022] [Accepted: 11/27/2022] [Indexed: 06/01/2023]
Abstract
The development of stimuli-responsive controlled release formulations is a potential method of improving pesticide utilization efficiency and alleviating current pesticide-related environmental pollution. In this study, a self-destruction redox-responsive pesticide delivery system using biodegradable disulfide-bond-bridged mesoporous organosilica (DMON) nanoparticles as the porous carriers and coordination complexes of gallic acid (GA) and Fe(III) ions as the capping agents were established for controlling prochloraz (PRO) release. The GA-Fe(III) complexes deposited onto the surface of DMON nanoparticles could effectively improve the light stability of prochloraz. Due to the decomposition of GA-Fe(III) complexes, the nano-vehicles had excellent redox-responsive performance under the reducing environments generated by the fungus. The spreadability of PRO@DMON-GA-Fe(III) nanoparticles on the rice leaves was increased due to the hydrogen bonds between GA and rice leaves. Compared with prochloraz emulsifiable concentrate, PRO@DMON-GA-Fe(III) nanoparticles showed better fungicidal activity against Magnaporthe oryzae with a longer duration under the same concentration of prochloraz. More importantly, DMON-GA-Fe(III) nanocarriers did not observe obvious toxicity to the growth of rice seedlings. Considering non-toxic organic solvents and excellent antifungal activity, redox-responsive pesticide controlled release systems with self-destruction properties have great application prospects in the field of plant disease management.
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3
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Qin Y, Lu X, Que H, Wang D, He T, Liang D, Liu X, Chen J, Ding C, Xiu P, Xu C, Gu X. Preparation and Characterization of Pendimethalin Microcapsules Based on Microfluidic Technology. ACS OMEGA 2021; 6:34160-34172. [PMID: 34926964 PMCID: PMC8675169 DOI: 10.1021/acsomega.1c05903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 11/26/2021] [Indexed: 06/14/2023]
Abstract
Microencapsulation of pesticides is a promising attempt to reduce environmental pollution and prevent the active ingredients from the interference of external factors. In this paper, pendimethalin microcapsules were prepared by the interfacial polymerization of 4,4-methylenediphenyl diisocyanate (MDI) and ethylenediamine (EDA) based on microfluidic technology. Effects of the microchannel structure, reaction temperature, surfactant type, and fluid flow rates were investigated and evaluated. The results showed that pendimethalin microcapsules prepared under suitable conditions had a smooth surface, good monodispersity, a high encapsulation efficiency (96.7%), and excellent thermal stability. The size and morphology control of microcapsules were realized by adjusting the flow rates of the continuous phase and the hydrophilic monomer EDA aqueous solution. The release of pendimethalin had a sustained release characteristic that was closely related to the morphology of microcapsules. Compared with the pendimethalin emulsifiable concentrate, pendimethalin microcapsules exhibited outstanding herbicidal activity in the weed control experiments. Therefore, pendimethalin microcapsules with tunable properties were successfully obtained from the microfluidic device and showed great potential in agricultural applications.
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4
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Biopesticide Encapsulation Using Supercritical CO 2: A Comprehensive Review and Potential Applications. Molecules 2021; 26:molecules26134003. [PMID: 34209179 PMCID: PMC8272144 DOI: 10.3390/molecules26134003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 05/27/2021] [Accepted: 06/28/2021] [Indexed: 01/06/2023] Open
Abstract
As an alternative to synthetic pesticides, natural chemistries from living organisms, are not harmful to nontarget organisms and the environment, can be used as biopesticides, nontarget. However, to reduce the reactivity of active ingredients, avoid undesired reactions, protect from physical stress, and control or lower the release rate, encapsulation processes can be applied to biopesticides. In this review, the advantages and disadvantages of the most common encapsulation processes for biopesticides are discussed. The use of supercritical fluid technology (SFT), mainly carbon dioxide (CO2), to encapsulate biopesticides is highlighted, as they reduce the use of organic solvents, have simpler separation processes, and achieve high-purity particles. This review also presents challenges to be surpassed and the lack of application of SFT for biopesticides in the published literature is discussed to evaluate its potential and prospects.
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5
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Ren L, Huang B, Fang W, Zhang D, Cheng H, Song Z, Yan D, Li Y, Wang Q, Zhou Z, Cao A. Multi-Encapsulation Combination of O/W/O Emulsions with Polyurea Microcapsules for Controlled Release and Safe Application of Dimethyl Disulfide. ACS APPLIED MATERIALS & INTERFACES 2021; 13:1333-1344. [PMID: 33351598 DOI: 10.1021/acsami.0c16613] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Dimethyl disulfide (DMDS), a promising alternative fumigant, has been highly desirable for excellent management of soil pests and diseases. However, high volatility and moderate toxicity of this sulfide limit its application. To address these issues, a novel controlled release formulation of DMDS was proposed employing multiple emulsions and polyurea microcapsules (DMDS@MEs-MCs). The successful combination of the two technologies was revealed by confocal laser scanning microscopy, scanning electron microscopy, thermogravimetric analysis, and Fourier transform infrared. According to the multiple encapsulation structure, the encapsulation efficiency decreased by only 3.13% after thermal storage, compared with a 15.21% decrease of microcapsules made with only a monolayer film. DMDS@MEs-MCs could effectively control the release of active ingredient, which increased applicator and environmental safety during application. Moreover, it could be facilely used by spraying and drip irrigation instead of a special fumigation device. The innovative formulation exhibited better control efficacy on soil pathogens (Fusarium spp. and Phytophthora spp.) and root-knot nematodes (Meloidogyne spp.) than DMDS technical concentration (DMDS TC). In addition, it did not inhibit seed germination after 10 days when the plastic film was removed from the fumigated soil. This method appears to be of broad interest for the development of safe and handy fumigant application.
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Affiliation(s)
- Lirui Ren
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- College of Science, China Agricultural University, Beijing 100193, China
| | - Bin Huang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Wensheng Fang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Daqi Zhang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Hongyan Cheng
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Zhaoxin Song
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Dongdong Yan
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- Beijing Innovation Consortium of Agriculture Research System, Beijing 100029, China
| | - Yuan Li
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- Beijing Innovation Consortium of Agriculture Research System, Beijing 100029, China
| | - Qiuxia Wang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- Beijing Innovation Consortium of Agriculture Research System, Beijing 100029, China
| | - Zhiqiang Zhou
- College of Science, China Agricultural University, Beijing 100193, China
| | - Aocheng Cao
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- Beijing Innovation Consortium of Agriculture Research System, Beijing 100029, China
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6
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Wang R, Xiao Y. Preparation of monosultap‐polyurethane microcapsules in an inverse emulsion through interfacial polymerization. J Appl Polym Sci 2019. [DOI: 10.1002/app.48594] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Rui Wang
- Chongqing Collaborative Innovation Center for Functional FoodChongqing University of Education Chongqing 400067 China
| | - Yao Xiao
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical EngineeringChina West Normal University Nanchong 637002 China
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7
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Liang H, Gao Q. Synthesis and properties of Non-isocyanate polyurethane Based on Aromatic amine. ACTA ACUST UNITED AC 2019. [DOI: 10.1088/1757-899x/612/2/022030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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8
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Karandikar PS, Rajput JD, Bagul SD, Gite VV, Bendre RS. Controlled release study of phenol formaldehyde based microcapsules containing various loading percentage of core cypermethrin at different agitation rates. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-018-2508-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Kumar S, Nehra M, Dilbaghi N, Marrazza G, Hassan AA, Kim KH. Nano-based smart pesticide formulations: Emerging opportunities for agriculture. J Control Release 2019; 294:131-153. [PMID: 30552953 DOI: 10.1016/j.jconrel.2018.12.012] [Citation(s) in RCA: 236] [Impact Index Per Article: 47.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 12/08/2018] [Accepted: 12/10/2018] [Indexed: 12/11/2022]
Abstract
The incorporation of nanotechnology as a means for nanopesticides is in the early stage of development. The main idea behind this incorporation is to lower the indiscriminate use of conventional pesticides to be in line with safe environmental applications. Nanoencapsulated pesticides can provide controlled release kinetics, while efficiently enhancing permeability, stability, and solubility. Nanoencapsulation can enhance the pest-control efficiency over extended durations by preventing the premature degradation of active ingredients (AIs) under harsh environmental conditions. This review is thus organized to critically assess the significant role of nanotechnology for encapsulation of AIs for pesticides. The smart delivery of pesticides is essential to reduce the dosage of AIs with enhanced efficacy and to overcome pesticide loss (e.g., due to leaching and evaporation). The future trends of pesticide nanoformulations including nanomaterials as AIs and nanoemulsions of biopesticides are also explored. This review should thus offer a valuable guide for establishing regulatory frameworks related to field applications of these nano-based pesticides in the near future.
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Affiliation(s)
- Sandeep Kumar
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana 125001, India; Department of Civil Engineering, College of Engineering, University of Nebraska Lincoln, P.O. Box 886105, Lincoln, NE 68588-6105, United States.
| | - Monika Nehra
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana 125001, India; Department of Electronics and Communication Engineering, Guru Jambheshwar University of Science and Technology, Hisar, Haryana 125001, India
| | - Neeraj Dilbaghi
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana 125001, India
| | - Giovanna Marrazza
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy; Istituto Nazionale Biostrutture e Biosistemi (INBB), Unit of Florence, Viale delle Medaglie d'Oro 305, 00136, Roma, Italy
| | - Ashraf Aly Hassan
- Department of Civil Engineering, College of Engineering, University of Nebraska Lincoln, P.O. Box 886105, Lincoln, NE 68588-6105, United States
| | - Ki-Hyun Kim
- Department of Civil & Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea.
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10
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Xiao Y, Wu B, Fu X, Wang R, Lei J. Preparation of biodegradable microcapsules through an organic solvent-free interfacial polymerization method. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4482] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yao Xiao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute; Sichuan University; Chengdu 610065 China
- College of Chemistry and Chemical Engineering; China West Normal University; Nanchong 637002 China
- Chongqing Collaborative Innovation Center for Functional Food; Chongqing University of Education; Chongqing 400067 China
| | - Bo Wu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute; Sichuan University; Chengdu 610065 China
| | - Xiaowei Fu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute; Sichuan University; Chengdu 610065 China
| | - Rui Wang
- Chongqing Collaborative Innovation Center for Functional Food; Chongqing University of Education; Chongqing 400067 China
| | - Jingxin Lei
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute; Sichuan University; Chengdu 610065 China
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11
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Wang Y, Li C, Wang Y, Zhang Y, Li X. Compound pesticide controlled release system based on the mixture of poly(butylene succinate) and PLA. J Microencapsul 2018; 35:494-503. [PMID: 30395751 DOI: 10.1080/02652048.2018.1538265] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Controlled release system has been widely developed and utilised in agriculture to optimise efficacy and minimise environmental pollution. Here, the azoxystrobin and difenoconazole compound pesticide microsphere was constructed by the solvent evaporation method. Blending poly (butylene succinate) (PBS) and poly (lactic acid) (PLA) as shells, in order to increase its entrapment efficiency and match the goal of complex synergism. The resulting microsphere processes high entrapment efficiency with a mean diameter of 7.2 μm. Acute toxicity suggested microsphere on zebrafish was moderate toxicity. Comparative studies revealed that the microsphere had a longer period of sustained release than difenoconazole-azoxystrobin (5:8) 32.5% w/v suspension concentrate (SC). In addition, the concentration ratio of active ingredients closed to the optimum compound stoichiometry, which can achieve the objective of improving the efficacy of the pesticides. These results demonstrated that such a compound pesticide microsphere delivery system may be a considerable potential for further exploration.
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Affiliation(s)
- Ya Wang
- a Southern Regional Collaborative Innovation Center for Grain and Oil Crops , College of Plant Protection, Hunan Agricultural University , Changsha , China
| | - Chaonan Li
- a Southern Regional Collaborative Innovation Center for Grain and Oil Crops , College of Plant Protection, Hunan Agricultural University , Changsha , China
| | - Yuxiang Wang
- a Southern Regional Collaborative Innovation Center for Grain and Oil Crops , College of Plant Protection, Hunan Agricultural University , Changsha , China
| | - Ying Zhang
- a Southern Regional Collaborative Innovation Center for Grain and Oil Crops , College of Plant Protection, Hunan Agricultural University , Changsha , China
| | - Xiaogang Li
- a Southern Regional Collaborative Innovation Center for Grain and Oil Crops , College of Plant Protection, Hunan Agricultural University , Changsha , China.,b Hunan Provincial Engineering & Technology Research Center for Bio pesticide and Formulating Processing , Changsha , China
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12
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Raychura AJ, Dholakiya BZ, Patel KI, Jauhari S. Development of Non-Traditional Vegetable-Oil-Based Two-Pack Polyurethane for Wood-Finished Coating: An Alternative Approach. ChemistrySelect 2018. [DOI: 10.1002/slct.201801452] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ashish J. Raychura
- Department of Applied Chemistry; Sardar Vallabhbhai National Institute of Technology (SVNIT), Surat -; 395 007, Gujarat India
| | - Bharatkumar Z. Dholakiya
- Department of Applied Chemistry; Sardar Vallabhbhai National Institute of Technology (SVNIT), Surat -; 395 007, Gujarat India
| | - Kalpesh I. Patel
- Department of Surface Coating Technology; Institute of Science and Technology for Advanced Studies and Research (ISTAR), Vallabh Vidyanagar -; 388 120, Gujarat India
| | - Smita Jauhari
- Department of Applied Chemistry; Sardar Vallabhbhai National Institute of Technology (SVNIT), Surat -; 395 007, Gujarat India
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13
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Whitford CM, Dymek S, Kerkhoff D, März C, Schmidt O, Edich M, Droste J, Pucker B, Rückert C, Kalinowski J. Auxotrophy to Xeno-DNA: an exploration of combinatorial mechanisms for a high-fidelity biosafety system for synthetic biology applications. J Biol Eng 2018; 12:13. [PMID: 30123321 PMCID: PMC6090650 DOI: 10.1186/s13036-018-0105-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 06/25/2018] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Biosafety is a key aspect in the international Genetically Engineered Machine (iGEM) competition, which offers student teams an amazing opportunity to pursue their own research projects in the field of Synthetic Biology. iGEM projects often involve the creation of genetically engineered bacterial strains. To minimize the risks associated with bacterial release, a variety of biosafety systems were constructed, either to prevent survival of bacteria outside the lab or to hinder horizontal or vertical gene transfer. MAIN BODY Physical containment methods such as bioreactors or microencapsulation are considered the first safety level. Additionally, various systems involving auxotrophies for both natural and synthetic compounds have been utilized by iGEM teams in recent years. Combinatorial systems comprising multiple auxotrophies have been shown to reduced escape frequencies below the detection limit. Furthermore, a number of natural toxin-antitoxin systems can be deployed to kill cells under certain conditions. Additionally, parts of naturally occurring toxin-antitoxin systems can be used for the construction of 'kill switches' controlled by synthetic regulatory modules, allowing control of cell survival. Kill switches prevent cell survival but do not completely degrade nucleic acids. To avoid horizontal gene transfer, multiple mechanisms to cleave nucleic acids can be employed, resulting in 'self-destruction' of cells. Changes in light or temperature conditions are powerful regulators of gene expression and could serve as triggers for kill switches or self-destruction systems. Xenobiology-based containment uses applications of Xeno-DNA, recoded codons and non-canonical amino acids to nullify the genetic information of constructed cells for wild type organisms. A 'minimal genome' approach brings the opportunity to reduce the genome of a cell to only genes necessary for survival under lab conditions. Such cells are unlikely to survive in the natural environment and are thus considered safe hosts. If suitable for the desired application, a shift to cell-free systems based on Xeno-DNA may represent the ultimate biosafety system. CONCLUSION Here we describe different containment approaches in synthetic biology, ranging from auxotrophies to minimal genomes, which can be combined to significantly improve reliability. Since the iGEM competition greatly increases the number of people involved in synthetic biology, we will focus especially on biosafety systems developed and applied in the context of the iGEM competition.
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Affiliation(s)
| | - Saskia Dymek
- Center for Biotechnology, Bielefeld University, 33615 Bielefeld, Germany
| | - Denise Kerkhoff
- Center for Biotechnology, Bielefeld University, 33615 Bielefeld, Germany
| | - Camilla März
- Center for Biotechnology, Bielefeld University, 33615 Bielefeld, Germany
| | - Olga Schmidt
- Center for Biotechnology, Bielefeld University, 33615 Bielefeld, Germany
| | - Maximilian Edich
- Center for Biotechnology, Bielefeld University, 33615 Bielefeld, Germany
| | - Julian Droste
- Center for Biotechnology, Bielefeld University, 33615 Bielefeld, Germany
- Faculty of Biology, Bielefeld University, Bielefeld, Germany
| | - Boas Pucker
- Center for Biotechnology, Bielefeld University, 33615 Bielefeld, Germany
- Faculty of Biology, Bielefeld University, Bielefeld, Germany
- Present address: Evolution and Diversity, Department of Plant Sciences, University of Cambridge, Cambridge, UK
| | - Christian Rückert
- Center for Biotechnology, Bielefeld University, 33615 Bielefeld, Germany
- Faculty of Biology, Bielefeld University, Bielefeld, Germany
| | - Jörn Kalinowski
- Center for Biotechnology, Bielefeld University, 33615 Bielefeld, Germany
- Faculty of Biology, Bielefeld University, Bielefeld, Germany
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14
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Liu B, Wang Y, Yang F, Cui H, Wu D. Development of a Chlorantraniliprole Microcapsule Formulation with a High Loading Content and Controlled-Release Property. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:6561-6568. [PMID: 28489403 DOI: 10.1021/acs.jafc.7b01295] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Microcapsule formulations have been widely developed and used in agriculture to improve pesticide utilization and reduce environmental pollution. However, commercial formulations of chlorantraniliprole (CAP) are only traditional formulations due to poor solubility of CAP in organic solvents. Here, adopting a solid in oil in water (S/O/W) double-emulsion method combined with premix membrane emulsion, we successfully constructed CAP microcapsule formulations with a high loading content. The microcapsule formulations with good light and thermal stability showed a significantly sustained release for a long period, which could be optimally regulated by tuning the surface porosity and size of the porous microcapsules. Bioassay studies showed that control efficacy of the porous microcapsule formulations against Plutella xylostella was superior to that of the commercial formulation. These results demonstrated that such a porous microcapsule delivery system should have great potential for further exploration as a commercial CAP formulation.
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Affiliation(s)
- Baoxia Liu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Yan Wang
- Institute of Environment and Sustainable Development in Agriculture , Chinese Academic of Agriculture Sciences , Beijing 100081 , China
| | - Fei Yang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Haixin Cui
- Institute of Environment and Sustainable Development in Agriculture , Chinese Academic of Agriculture Sciences , Beijing 100081 , China
| | - Decheng Wu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
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15
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González-Hurtado M, Rieumont-Briones J, Castro-González LM, Zumeta-Dube I, Galano A. Combined experimental–theoretical investigation on the interactions of Diuron with a urea–formaldehyde matrix: implications for its use as an “intelligent pesticide”. CHEMICAL PAPERS 2017. [DOI: 10.1007/s11696-017-0245-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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16
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Wang Y, Qian C, Yan X, Liu H. Preparation and characterization of controlled-release poly(melamine-formaldehyde) microcapsules filled with 2,4-D isooctyl ester. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2017.1291511] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Yan Wang
- College of Resources and Environment Science, Jilin Agricultural University, Changchun, P. R. China
| | - Chaoqun Qian
- College of Resources and Environment Science, Jilin Agricultural University, Changchun, P. R. China
| | - Xianfei Yan
- College of Resources and Environment Science, Jilin Agricultural University, Changchun, P. R. China
| | - Huanhuan Liu
- College of Resources and Environment Science, Jilin Agricultural University, Changchun, P. R. China
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17
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18
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Tasker AL, Hitchcock J, Baxter EA, Cayre DOJ, Biggs S. Understanding the Mechanisms of Gold Shell Growth onto Polymer Microcapsules to Control Shell Thickness. Chem Asian J 2017; 12:1641-1648. [PMID: 28544505 DOI: 10.1002/asia.201700536] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Revised: 05/15/2017] [Indexed: 11/10/2022]
Abstract
Polymer microcapsules have been used commercially for decades, however they have an inherent flaw which renders them impractical as a carrier of small, volatile molecules. The porous nature of the polymer shell allows for diffusion of the encapsulated molecules into the bulk. The use of metal shells is an innovative way to prevent undesired loss of small molecules from the core of microcapsules, however it is important, particularly when using expensive metals to ensure that the resulting shell is as thin as possible. Here we investigate the fundamental mechanisms controlling the gold shell thickness when a fragrance oil is encapsulated in a poly(methyl methacrylate) shell. We consider the distribution of the nanoparticles on the capsule surface, and from quantification of the adsorbed nanoparticle (NP) density and resulting shell thickness, we propose mechanisms to describe the gold shell growth for systems with high and low NP surface coverage. We suggest from our observations that the gold grows to fill in the gaps between NPs. At low NP concentrations, thicker metal shells form. We postulate that this is due to the low NP density on the surface, forcing the gold clusters to grow larger before they meet the adjacent ones. Thus, to grow the thinnest possible shells a densely packed monolayer of platinum nanoparticles is required on the capsule surface.
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Affiliation(s)
- Alison L Tasker
- School of Chemical and Process Engineering, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.,School of Chemical Engineering, University of Queensland, St. Lucia, Queensland, 4072, Australia
| | - James Hitchcock
- School of Chemical and Process Engineering, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Elaine A Baxter
- School of Chemical and Process Engineering, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Dr Olivier J Cayre
- School of Chemical and Process Engineering, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
| | - Simon Biggs
- Faculty of Engineering, Architecture and Information Technology, University of Queensland, St. Lucia, Queensland, 4072, Australia
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Qian C, Li R, Wang Y, Yan X. Preparation and characterization of 2,4–D butyl ester capsule suspension for mitigation of its drift risk. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2017. [DOI: 10.1080/10601325.2016.1261624] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Chaoqun Qian
- College of Resources and Environment Science, Jilin Agricultural University, Changchun, China
| | - Ranhong Li
- College of Resources and Environment Science, Jilin Agricultural University, Changchun, China
| | - Yan Wang
- College of Resources and Environment Science, Jilin Agricultural University, Changchun, China
| | - Xianfei Yan
- College of Resources and Environment Science, Jilin Agricultural University, Changchun, China
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20
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Liu B, Wang Y, Yang F, Wang X, Shen H, Cui H, Wu D. Construction of a controlled-release delivery system for pesticides using biodegradable PLA-based microcapsules. Colloids Surf B Biointerfaces 2016; 144:38-45. [PMID: 27062215 DOI: 10.1016/j.colsurfb.2016.03.084] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 03/29/2016] [Accepted: 03/31/2016] [Indexed: 01/08/2023]
Abstract
Conventional pesticides usually need to be used in more than recommended dosages due to their loss and degradation, which results in a large waste of resources and serious environmental pollution. Encapsulation of pesticides in biodegradable carriers is a feasible approach to develop environment-friendly and efficient controlled-release delivery system. In this work, we fabricated three kinds of polylactic acid (PLA) carriers including microspheres, microcapsules, and porous microcapsules for controlled delivery of Lambda-Cyhalothrin (LC) via premix membrane emulsification (PME). The microcapsule delivery system had better water dispersion than the other two systems. Various microcapsules with a high LC contents as much as 40% and tunable sizes from 0.68 to 4.6μm were constructed by manipulating the process parameters. Compared with LC technical and commercial microcapsule formulation, the microcapsule systems showed a significantly sustained release of LC for a longer period. The LC release triggered by LC diffusion and matrix degradation could be optimally regulated by tuning LC contents and particle sizes of the microcapsules. This multi-regulated release capability is of great significance to achieve the precisely controlled release of pesticides. A preliminary bioassay against plutella xylostella revealed that 0.68μm LC-loaded microcapsules with good UV and thermal stability exhibited an activity similar to a commercial microcapsule formulation. These results demonstrated such an aqueous microcapsule delivery system had a great potential to be further explored for developing an effective and environmentally friendly pesticide-release formulation.
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Affiliation(s)
- Baoxia Liu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Yan Wang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academic of Agriculture Sciences, Beijing 100081, China
| | - Fei Yang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xing Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Hong Shen
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Haixin Cui
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academic of Agriculture Sciences, Beijing 100081, China.
| | - Decheng Wu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
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21
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Marathe RJ, Gite V. Encapsulation of 8-HQ as a corrosion inhibitor in PF and UF shells for enhanced anticorrosive properties of renewable source based smart PU coatings. RSC Adv 2016. [DOI: 10.1039/c6ra21684f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Encapsulation of 8-HQ into PF and UF microcapsules was carried out to enhance the anticorrosive properties of renewable source based PU coatings.
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Affiliation(s)
- R. J. Marathe
- Department of Polymer Chemistry
- School of Chemical Sciences
- North Maharashtra University
- Jalgaon 425 001
- India
| | - V. V. Gite
- Department of Polymer Chemistry
- School of Chemical Sciences
- North Maharashtra University
- Jalgaon 425 001
- India
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22
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Abbaszad Rafi A, Mahkam M. Preparation of magnetic pH-sensitive microcapsules with an alginate base as colon specific drug delivery systems through an entirely green route. RSC Adv 2015. [DOI: 10.1039/c4ra15170d] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The aim of this work was to prepare pH-sensitive drug carriers for colon specific drug delivery through a completely green and environmentally friendly route (without using any organic solvents, hazardous chemicals and even a harsh procedure).
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Affiliation(s)
| | - Mehrdad Mahkam
- Chemistry Department
- Faculty of Science
- Azarbaijan Shahid Madani University
- Tabriz
- Iran
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