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Das S, Dalei G. In situ forming dialdehyde xanthan gum-gelatin Schiff-base hydrogels as potent controlled release fertilizers. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 875:162660. [PMID: 36894095 DOI: 10.1016/j.scitotenv.2023.162660] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 02/06/2023] [Accepted: 03/02/2023] [Indexed: 06/18/2023]
Abstract
Controlled release fertilizer (CRF) hydrogels have blossomed into promising materials in agriculture owing to the sustained release of the fertilizer and also as soil conditioner. Apart from the traditional CRF hydrogels; Schiff-base hydrogels have garnered significant thrust that release nitrogen slowly in addition to reducing the environmental pollution. Herein, we have fabricated Schiff-base CRF hydrogels composed of dialdehyde xanthan gum (DAXG) and gelatin. The formation of the hydrogels was accomplished via the simplistic in situ crosslinking reaction between the aldehyde groups of DAXG and the amino groups of gelatin. The hydrogels acquired a compact network upon increasing the DAXG content in the matrix. The phytotoxic assay on different plants indicated the hydrogels to be nontoxic. The hydrogels demonstrated good water-retention behaviour in soil, along with reusability even after 5 cycles. A controlled release profile for urea was evident from the hydrogels wherein macromolecular relaxation played a crucial role in the release mechanism. Growth assays on Abelmoschus esculentus (Okra) plant presented an intuitive evaluation on the growth and water-holding capacity of the CRF hydrogel. The present work demonstrated a facile preparation of CRF hydrogels to enhance the utilization of urea and retain soil humidity as fertilizer carriers.
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Affiliation(s)
- Subhraseema Das
- Department of Chemistry, Ravenshaw University, Cuttack 753003, Odisha, India.
| | - Ganeswar Dalei
- Department of Chemistry, Odisha University of Technology and Research, Bhubaneswar 751029, Odisha, India
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Wang J, Wang R, Shi Z, Zeng R, Ren T, Zhang B. Glutathione-Responsive Pyraclostrobin-Loaded Polyurea Microcapsules for Their Intelligent Controlled Release. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:5310-5318. [PMID: 35467347 DOI: 10.1021/acs.jafc.1c08182] [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
The utilization of intelligent controlled release technology to create stimuli-responsive pesticide formulations has been shown to effectively improve pesticide efficacy and reduce environmental pollution. Herein, a glutathione-responsive release polyurea (PU) microcapsules (MCs) loaded with pyraclostrobin were developed via the interface polymerization method. The pyraclostrobin-loaded PU-MCs showed a regular spherical shape with an average diameter of 480 nm. It also showed good thermal stability and rheological properties. Furthermore, the pyraclostrobin-loaded PU-MCs exhibited favorable wettability on wheat leaves, which was beneficial for enhancing the retention capacity of pesticide droplets and improving pesticide utilization. The pyraclostrobin can be released from MCs and directly proportional to glutathione (GSH) concentrations with Fickian diffusion. Importantly, the control efficacy of pyraclostrobin-loaded PU-MCs against Fusarium graminearum was positively correlated with GSH, indicating a promising candidate for a controlled release of pesticides in agriculture and laying the foundation for further field experiments.
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Affiliation(s)
- Jian Wang
- Shanghai Engineering Research Center of Green Energy Chemical Engineering, College of Chemistry and Materials Science, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, P. R. China
| | - Rong Wang
- Shanghai Engineering Research Center of Green Energy Chemical Engineering, College of Chemistry and Materials Science, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, P. R. China
| | - Zefeng Shi
- Shanghai Engineering Research Center of Green Energy Chemical Engineering, College of Chemistry and Materials Science, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, P. R. China
| | - Rong Zeng
- Shanghai Key Laboratory of Protection Horticultural Technology, Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, P. R. China
| | - Tianrui Ren
- Shanghai Engineering Research Center of Green Energy Chemical Engineering, College of Chemistry and Materials Science, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, P. R. China
| | - Bo Zhang
- Shanghai Engineering Research Center of Green Energy Chemical Engineering, College of Chemistry and Materials Science, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, P. R. China
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Encapsulation of volatile compounds in liquid media: Fragrances, flavors, and essential oils in commercial formulations. Adv Colloid Interface Sci 2021; 298:102544. [PMID: 34717207 DOI: 10.1016/j.cis.2021.102544] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 10/06/2021] [Accepted: 10/08/2021] [Indexed: 12/23/2022]
Abstract
The first marketed example of the application of microcapsules dates back to 1957. Since then, microencapsulation techniques and knowledge have progressed in a plethora of technological fields, and efforts have been directed toward the design of progressively more efficient carriers. The protection of payloads from the exposure to unfavorable environments indeed grants enhanced efficacy, safety, and stability of encapsulated species while allowing for a fine tuning of their release profile and longer lasting beneficial effects. Perfumes or, more generally, active-loaded microcapsules are nowadays present in a very large number of consumer products. Commercial products currently make use of rigid, stable polymer-based microcapsules with excellent release properties. However, this type of microcapsules does not meet certain sustainability requirements such as biocompatibility and biodegradability: the leaking via wastewater contributes to the alarming phenomenon of microplastic pollution with about 4% of total microplastic in the environment. Therefore, there is a need to address new issues which have been emerging in relation to the poor environmental profile of such materials. The progresses in some of the main application fields of microencapsulation, such as household care, toiletries, cosmetics, food, and pesticides are reviewed herein. The main technologies employed in microcapsules production and the mechanisms underlying the release of actives are also discussed. Both the advantages and disadvantages of every technique have been considered to allow a careful choice of the most suitable technique for a specific target application and prepare the ground for novel ideas and approaches for encapsulation strategies that we expect to be proposed within the next years.
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Liang Y, Song J, Dong H, Huo Z, Gao Y, Zhou Z, Tian Y, Li Y, Cao Y. Fabrication of pH-responsive nanoparticles for high efficiency pyraclostrobin delivery and reducing environmental impact. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 787:147422. [PMID: 33991920 DOI: 10.1016/j.scitotenv.2021.147422] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 04/12/2021] [Accepted: 04/25/2021] [Indexed: 05/18/2023]
Abstract
In this work, a pH-responsive pesticide delivery system using mesoporous silica nanoparticles (MSNs) as the porous carriers and coordination complexes of Cu ions and tannic acid (TA-Cu) as the capping agent was established for controlling pyraclostrobin (PYR) release. The results showed the loading capacity of PYR@MSNs-TA-Cu nanoparticles for pyraclostrobin was 15.7 ± 0.5% and the TA-Cu complexes deposited on the MSNs surface could protect pyraclostrobin against photodegradation effectively. The nanoparticles had excellent pH responsive release performance due to the decomposition of TA-Cu complexes under the acid condition, which showed 8.53 ± 0.37%, 82.38 ± 1.67% of the encapsulated pyraclostrobin were released at pH 7.4, pH 4.5 after 7 d respectively. The contact angle and adhesion work of PYR@MSNs-TA-Cu nanoparticles on rice foliage were 86.3° ± 2.7° and 75.8 ± 3.1 mJ/m2 after 360 s respectively, indicating that TA on the surface of the nanoparticles could improve deposition efficiency and adhesion ability on crop foliage. The control effect of PYR@MSNs-TA-Cu nanoparticles against Rhizoctonia solani with 400 mg/L of pyraclostrobin was 85.82% after 7 d, while that of the same concentration of pyraclostrobin EC was 53.05%. The PYR@MSNs-TA-Cu nanoparticles did not show any phytotoxicity to the growth of rice plants. Meanwhile, the acute toxicity of PYR@MSNs-TA-Cu nanoparticles to zebrafish was decreased more than 9-fold compared with that of pyraclostrobin EC. Thus, pH-responsive PYR@MSNs-TA-Cu nanoparticles have great potential for enhancing targeting and environmental safety of the active ingredient.
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Affiliation(s)
- You Liang
- Co-Innovation Center for Modern Production Technology of Grain Crop/Jiangsu Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou, China; College of Plant Protection, China Agricultural University, Beijing, China
| | - Jiehui Song
- Co-Innovation Center for Modern Production Technology of Grain Crop/Jiangsu Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou, China
| | - Hongqiang Dong
- College of Plant Science, Tarim University, Alaer, China
| | - Zhongyang Huo
- Co-Innovation Center for Modern Production Technology of Grain Crop/Jiangsu Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou, China
| | - Yunhao Gao
- College of Plant Protection, China Agricultural University, Beijing, China
| | - Zhiyuan Zhou
- College of Plant Protection, China Agricultural University, Beijing, China
| | - Yuyang Tian
- College of Plant Protection, China Agricultural University, Beijing, China
| | - Yan Li
- College of Plant Protection, China Agricultural University, Beijing, China
| | - Yongsong Cao
- College of Plant Protection, China Agricultural University, Beijing, China.
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Li J, Guo M, Wang Y, Ye B, Chen Y, Yang X. Preparation of biological sustained-release nanocapsules and explore on algae-killing properties. J Adv Res 2021; 31:87-96. [PMID: 34194834 PMCID: PMC8240354 DOI: 10.1016/j.jare.2020.12.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 12/08/2020] [Accepted: 12/10/2020] [Indexed: 11/17/2022] Open
Abstract
Introduction Green algae seriously affect the quality and yield of Torreya grandis, it is important to explore new, environmentally friendly ways to control it. Objectives The present study aimed at preparing sustained-release algae-killing nanocapsules without pollution to the environment. Methods In this work, sodium carboxymethylcellulose (CMC), sodium alginate (SA), and chitosan (CTS) were used as raw materials in acylation reaction with the photosensitive catalytic material iron octaaminophthalocyanine (T) to generate the photoactive bio-based materials T-CMC, T-SA, and T-CMCS. Cinnamaldehyde and 2-aminobenzimidazole were combined using chemical grafting to produce a new algicide, and then formed nanocapsules by phase separation. The molecular structure of products was characterized by UV-Vis, FTIR, and NMR (1H NMR, 13C NMR). The particle size of the nanocapsules was determined by Zeta particle size analysis and TEM; DSC was used to investigate the thermal stability; The encapsulation efficiency and sustained-release performance were determined by HPLC. Then the phytotoxic of the new algicide was measured. Results The bio-based nanocapsules was successfully synthesized, which had a particle size of 10-30 nm and was stable at 40 °C. The encapsulation efficiency of the nanocapsules was 48.77%, the cumulative release rate was 83%, and the new algicide killed the green algae in a dose-dependent way. Conclusions The bio-based nano capsule is a new and valuable Sustained-release capsule, which is the method of green algae.
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Affiliation(s)
- Jinyun Li
- College of Engineering, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
- College of Science, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Ming Guo
- College of Engineering, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
- College of Science, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Yiping Wang
- College of Forestry and Bio-technology, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Bihuan Ye
- Zhejiang Academy of Forestry, Hangzhou, Zhejiang 310023, China
| | - Youwu Chen
- Zhejiang Academy of Forestry, Hangzhou, Zhejiang 310023, China
| | - Xuejuan Yang
- College of Science, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
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6
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Xiao D, Liang W, Xie Z, Cheng J, Du Y, Zhao J. A temperature-responsive release cellulose-based microcapsule loaded with chlorpyrifos for sustainable pest control. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123654. [PMID: 32814240 DOI: 10.1016/j.jhazmat.2020.123654] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 07/23/2020] [Accepted: 07/31/2020] [Indexed: 05/18/2023]
Abstract
Controlled pesticide release in response to environmental stimuli by encapsulating pesticide in carrier is a feasible approach to improve the effective utilization rate. Here, a temperature-responsive release microcapsule loaded with chlorpyrifos (CPF@CM) was prepared from n-hexadecane-in-water emulsions via interfacial polymerization. The microcapsule was consisted of nanofibrillated cellulose (NFC) as the shell wall material and isophorone diisocyanate (IPDI) as the crosslinker. The prepared CPF@CM had pesticide-loading efficiency (33.1 wt%) and favorable adhesion on the surface of cucumber and peanut foliage compared with conventional formulation. Additionally, CPF@CM could protect chlorpyrifos against photodegradation effectively. The in vitro release test showed that microcapsule had adjustable controlled-release characteristics with the change in temperature based on phase transition of the n-hexadecane core. Bioassay studies showed that control efficacy of CPF@CM microcapsule against P. xylostella was positively correlated with temperature because of temperature-induced changes in release rate. The acute toxicity of CPF@CM to zebrafish was reduced more than 5-fold compared with that of CPF technical. These results indicated that the microcapsule release system has great potential in the development of an effective and environmentally friendly pesticide formulation.
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Affiliation(s)
- Douxin Xiao
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, 310058, China
| | - Wenlong Liang
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, 310058, China
| | - Zhengang Xie
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, 310058, China
| | - Jingli Cheng
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, 310058, China
| | - Yongjun Du
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, 310058, China
| | - Jinhao Zhao
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, 310058, China.
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7
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An unusually stable solid state Ag|AgCl reference electrode for long term continuous measurements based on a crosslinked poly(vinyl acetate)/KCl composite. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2020.137636] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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8
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Meng W, Tian Z, Yao P, Fang X, Wu T, Cheng J, Zou A. Preparation of a novel sustained-release system for pyrethroids by using metal-organic frameworks (MOFs) nanoparticle. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125266] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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9
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Zhong-Qing Z, Qiang G, Jing-Min Y, Yan W, Jing-Yi Y, Xue Z, Guo-Zhong F, Zhi-Qiang C, Shao-Jie W, Hong-Ge S. Fabrication and release behavior of nitrapyrin Microcapsules: Using modified melamine-formaldehyde resin as shell material. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 704:135394. [PMID: 31796286 DOI: 10.1016/j.scitotenv.2019.135394] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 11/02/2019] [Accepted: 11/04/2019] [Indexed: 06/10/2023]
Abstract
As a commonly used nitrification inhibitor, nitrapyrin can significantly improve the utilization of nitrogen in soils. However, the effectiveness of the traditional dosage form of nitrapyrin is reduced by soil adsorption. In this study, nitrapyrin was encapsulated into a melamine-formaldehyde resin microcapsule with good dispersion and release behavior using an in situ polymerization method. The nitrapyrin microcapsules were characterized using Fourier transform infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy, transmission electron microscopy, and particle-size analysis. The results indicated that the microcapsules had a spherical-shell structure, a uniform morphology with nanoscale micropores on the surface, and a decent nitrapyrin loading content (67.19%). Tests revealed that the release behavior of the nitrapyrin microcapsules was outstanding and conformed to the double-release kinetic model. These results of this study indicate that the nitrapyrin microcapsules can be applied as nitrification inhibitors with beneficial environmental effects and high efficacy.
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Affiliation(s)
- Zhang Zhong-Qing
- Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, College of Resources and Environmental Science, Jilin Agricultural University, Changchun 130118, China
| | - Gao Qiang
- Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, College of Resources and Environmental Science, Jilin Agricultural University, Changchun 130118, China.
| | - Yang Jing-Min
- Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, College of Resources and Environmental Science, Jilin Agricultural University, Changchun 130118, China
| | - Wang Yan
- Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, College of Resources and Environmental Science, Jilin Agricultural University, Changchun 130118, China
| | - Yang Jing-Yi
- Greenhouse & Processing Crops Research Centre, Agriculture and Agri-Food Canada, Harrow N0R1G0, Canada
| | - Zhang Xue
- Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, College of Resources and Environmental Science, Jilin Agricultural University, Changchun 130118, China
| | - Feng Guo-Zhong
- Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, College of Resources and Environmental Science, Jilin Agricultural University, Changchun 130118, China
| | - Cheng Zhi-Qiang
- Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, College of Resources and Environmental Science, Jilin Agricultural University, Changchun 130118, China
| | - Wang Shao-Jie
- Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, College of Resources and Environmental Science, Jilin Agricultural University, Changchun 130118, China
| | - Su Hong-Ge
- Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, College of Resources and Environmental Science, Jilin Agricultural University, Changchun 130118, China
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Zhang Y, Li C, Chu D, Yan G, Zhu M, Zhao X, Gu J, Li G, Wang J, Zhang B. Process optimization for the preparation of thiamethoxam microspheres by response surface methodology. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2019.104460] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Cellulose based materials for controlled release formulations of agrochemicals: A review of modifications and applications. J Control Release 2019; 316:105-115. [PMID: 31704109 DOI: 10.1016/j.jconrel.2019.11.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 11/01/2019] [Accepted: 11/01/2019] [Indexed: 11/22/2022]
Abstract
Controlled release formulations (CRFs) of agrochemicals have been attracted considerable attention due to their friendliness to environment. The commercial supporting materials for CRFs of agrochemicals are non-degradable, leading to secondary pollution issue. Cellulose, as the most abundant natural materials in the world, is regarded as one of the most ideal substitutes for non-degradable supporting materials thanks to its good biocompatibility and biodegradability. As raw cellulose materials suffer several problems, such as poor mechanical strength, fast release rate, etc., chemical modifications are commonly performed to improve their properties. In this review, modification methods of cellulose materials for CRFs of agrochemicals were introduced. The relationships between release rate and cellulose based materials were discussed in detail. The applications of cellulose materials for CRFs of agrochemicals were also expounded.
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12
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Preparation of isocyanate microcapsules as functional crosslinking agent by minimalist interfacial polymerization. ADV POWDER TECHNOL 2019. [DOI: 10.1016/j.apt.2019.05.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Liu G, Lin G, Lin X, Zhou H, Chen H, Hao L, Zhou X. Enzyme and pH dual-responsive avermectin nano-microcapsules for improving its efficacy. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:25107-25116. [PMID: 31254196 DOI: 10.1007/s11356-019-05804-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 06/19/2019] [Indexed: 06/09/2023]
Abstract
The overdosage use of pesticide was harmful to the environment and human health, which was mainly caused by the low utilization rate of the pesticide. However, the pesticide microcapsule with sustained-release and stimulating response properties could effectively solve this problem. Preparation of carboxymethyl cellulose grafting dimethyldiallylammonium chloride (CMC-g-PDMDAAC) through grafting polymerization and trapping as well as encapsulation of avermectin (AVM) via electrostatic interactions resulted in the formation of AVM/CMC-g-PDMDAAC microcapsules. The results showed that the particle size was 200~300 nm. The encapsulation efficiency was as high as 72.06%. Furthermore, the remaining rate of encapsulated AVM increased from 50.0 to 81.60% after UV irradiation for 359 min. The microcapsules exhibited significant enzyme and pH stimuli responsiveness. Finally, CMC-g-PDMDAAC had no significant difference effect on the toxicity of AVM, AVM could be found, and DMDAAC featured a synergistic effect on the toxicological effects of AVM. Graphical abstract.
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Affiliation(s)
- Guanghua Liu
- School of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, People's Republic of China
- Shaoguan Huashi Innovational Research Institute for Modern Agriculture, Shaoguan, People's Republic of China
| | - Guanquan Lin
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, People's Republic of China
| | - Xida Lin
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, People's Republic of China
| | - Hongjun Zhou
- Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, Guangzhou, People's Republic of China.
| | - Huayao Chen
- Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, Guangzhou, People's Republic of China
| | - Li Hao
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, People's Republic of China
| | - Xinhua Zhou
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, People's Republic of China.
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14
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Lin GQ, Chen HY, Zhou HJ, Zhou XH, Xu H. Avermectin/polyacrylate nanoparticles: preparation, characterization, anti-UV and sustained release properties. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2018.1473866] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Guan-Quan Lin
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, P.R. China
- Guangzhou Key Lab for Efficient Use of Agricultural Chemicals, Guangzhou, P.R. China
| | - Hua-Yao Chen
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, P.R. China
- Guangzhou Key Lab for Efficient Use of Agricultural Chemicals, Guangzhou, P.R. China
| | - Hong-Jun Zhou
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, P.R. China
- Guangzhou Key Lab for Efficient Use of Agricultural Chemicals, Guangzhou, P.R. China
| | - Xin-Hua Zhou
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, P.R. China
- Guangzhou Key Lab for Efficient Use of Agricultural Chemicals, Guangzhou, P.R. China
| | - Hua Xu
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, P.R. China
- Guangzhou Key Lab for Efficient Use of Agricultural Chemicals, Guangzhou, P.R. China
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15
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Fabrication and characterization of core–shell novel PU microcapsule using TDI trimer for release system. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.03.071] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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16
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Shoaib A, Waqas M, Elabasy A, Cheng X, Zhang Q, Shi Z. Preparation and characterization of emamectin benzoate nanoformulations based on colloidal delivery systems and use in controlling Plutella xylostella (L.) (Lepidoptera: Plutellidae). RSC Adv 2018; 8:15687-15697. [PMID: 35539448 PMCID: PMC9080111 DOI: 10.1039/c8ra01913d] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 04/12/2018] [Indexed: 12/15/2022] Open
Abstract
Colloidal delivery systems have been widely used as carriers for controlled delivery of pesticides to improve the efficacy and photostability of natural and semi-synthetic pesticides. In this study, we have synthesized emamectin benzoate nanoformulations (EB + NFs) depending on polymeric nanocapsules (PNC) and two types of the nanosilica, mesoporous nanosilica (MCM-48) and silicon dioxide nanoparticles (SNPs) as carriers for the emamectin benzoate (EB). The fabricated nanoformulations were characterized by using X-ray diffraction analysis, Fourier transform infrared spectroscopy, particle size, zeta potential, morphology, absolute recovery (AR), entrapment efficiency (EE), UV stability and release kinetics. The obtained results showed that the carriers had a remarkable loading ability for EB and improved the EB photostability. The EE% of nanoformulations were 92.84%, 87.45% and 71.19% for emamectin benzoate polymeric nanocapsules (EB + PNC), emamectin benzoate SNPs (EB + SNPs) and emamectin benzoate MCM-48 (EB + MCM-48) respectively. The insecticidal activity of EB + NFs against Plutella xylostella showed that the EB + SNPs was more effective than other EB + NFs and EB alone. The LC50 values were 0.18, 4.03, 8.49 and 11.06 mg L−1 for EB + SNPs, EB + MCM-48, EB + PNC and EB respectively. The obtained results suggest the colloidal delivery systems that used in this study could improve the efficacy and photostability for EB, and they are able to overcome the disadvantage of the natural and semi-synthetic pesticides such as environmental sensitivity and to increase the efficacy of pesticides, which eventually leads to reduce the dosage of pesticides needed, reducing the number of applications required in comparison to conventional formulations. Colloidal delivery systems have been widely used as carriers for controlled delivery of pesticides to improve the efficacy and photostability of natural and semi-synthetic pesticides.![]()
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Affiliation(s)
- Ali Shoaib
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects
- Ministry of Agriculture
- Institute of Insect Sciences
- Zhejiang University
- Hangzhou 310058
| | - Muhammad Waqas
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects
- Ministry of Agriculture
- Institute of Insect Sciences
- Zhejiang University
- Hangzhou 310058
| | - Asem Elabasy
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects
- Ministry of Agriculture
- Institute of Insect Sciences
- Zhejiang University
- Hangzhou 310058
| | - Xinlai Cheng
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects
- Ministry of Agriculture
- Institute of Insect Sciences
- Zhejiang University
- Hangzhou 310058
| | - Qianqian Zhang
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects
- Ministry of Agriculture
- Institute of Insect Sciences
- Zhejiang University
- Hangzhou 310058
| | - Zuhua Shi
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects
- Ministry of Agriculture
- Institute of Insect Sciences
- Zhejiang University
- Hangzhou 310058
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17
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Dai RY, You SY, Lu LM, Liu Q, Li ZX, Wei L, Huang XG, Yang ZY. High blades spreadability of chlorpyrifos microcapsules prepared with polysiloxane sodium carboxylate/sodium carboxymethylcellulose/gelatin via complex coacervation. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.06.057] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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18
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Shen Y, Wang Y, Zhao X, Sun C, Cui B, Gao F, Zeng Z, Cui H. Preparation and Physicochemical Characteristics of Thermo-Responsive Emamectin BenzoateMicrocapsules. Polymers (Basel) 2017; 9:E418. [PMID: 30965720 PMCID: PMC6418524 DOI: 10.3390/polym9090418] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 08/23/2017] [Accepted: 08/31/2017] [Indexed: 11/30/2022] Open
Abstract
Thermo-responsive release emamectin benzoate microcapsules were successfully prepared with a polydopamine (PDA)-g-poly(N-isopropylacrylamide) (PNIPAm) multifunctional layer. Preparation of emamectin benzoate microcapsules was first studied by emulsion interfacial-polymerization using PDA as a wall material. Then the amino-terminated PNIPAm was grafted on the PDA layer by its amino group in aqueous solution. Physicochemical characterization of microcapsules was obtained by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and dynamic light scattering (DLS). Kinetic study of emamectin benzoate release showed that the microcapsules exhibit sustained- and controlled-release properties. The multifunctional layer can release emamectin benzoate easily when the temperature was below the lower critical solution temperature (LCST). In contrast, when the temperature increased above the LCST, the release rate was reduced. The results indicated that these microcapsules with excellent thermo-sensitivity would be promising in the research field of pesticide microcapsules.
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Affiliation(s)
- Yue Shen
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Yan Wang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Xiang Zhao
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Changjiao Sun
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Bo Cui
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Fei Gao
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Zhanghua Zeng
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Haixin Cui
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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19
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Marco-Brown JL, Undabeytia T, Torres Sánchez RM, Dos Santos Afonso M. Slow-release formulations of the herbicide picloram by using Fe-Al pillared montmorillonite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:10410-10420. [PMID: 28281061 DOI: 10.1007/s11356-017-8699-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 02/27/2017] [Indexed: 06/06/2023]
Abstract
Slow-release formulations of the herbicide picloram (PCM, 4-amino-3,5,6-trichloropyridine-2-carboxylic acid) were designed based on its adsorption on pillared clays (pillared clays (PILCs)) for reducing the water-polluting risk derived from its use in conventional formulations. Fe-Al PILCs were synthesized by the reaction of Na+-montmorillonite (SWy-2) with base-hydrolyzed solutions of Fe and Al. The Fe/(Fe + Al) ratios used were 0.15 and 0.50. The PCM adsorption isotherms on Fe-Al PILCs were well fitted to Langmuir and Freundlich models. The PCM adsorption capacity depended on the Fe content in the PILCs. Slow-release formulations were prepared by enhanced adsorption of the herbicide from PCM-cyclodextrin (CD) complexes in solution. CDs were able to enhance up to 2.5-fold the solubility of PCM by the formation of inclusion complexes where the ring moiety of the herbicide was partially trapped within the CD cavity. Competitive adsorption of anions such as sulfate, phosphate, and chloride as well as the FTIR analysis of PCM-PILC complexes provided evidence of formation of inner sphere complexes of PCM-CD on Fe-Al PILCs. Release of the herbicide in a sandy soil was lower from Fe-Al PILC formulations relative to a PCM commercial formulation.
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Affiliation(s)
- Jose L Marco-Brown
- Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, C1428EHA, Buenos Aires, Argentina.
- Instituto de Química Física de los Materiales, Medio Ambiente y Energía de la Facultad de Ciencias Exactas y Naturales (INQUIMAE), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina.
- Instituto de Investigación e Ingeniería Ambiental (3iA), CONICET, Escuela de Ciencia y Tecnología, UNSAM, 25 de Mayo y Francia (1650), San Martín, Argentina.
| | - Tomás Undabeytia
- Institute of Natural Resources and Agrobiology (IRNAS-CSIC), Reina Mercedes 10. Apdo. 1052, 41080, Sevilla, Spain
| | - Rosa M Torres Sánchez
- Centro de Tecnología en Recursos Minerales y Cerámica (CETMIC), CONICET-CCT La Plata-CIC, Camino Centenario y 506 CC (49), B1897ZCA, M. B. Gonnet, Argentina
| | - María Dos Santos Afonso
- Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, C1428EHA, Buenos Aires, Argentina
- Instituto de Química Física de los Materiales, Medio Ambiente y Energía de la Facultad de Ciencias Exactas y Naturales (INQUIMAE), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
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20
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Xu Y, Wang L, Tong Y, Xiang S, Guo X, Li J, Gao H, Wu X. Study on the preparation, characterization, and release behavior of carbosulfan/polyurethane microcapsules. J Appl Polym Sci 2016. [DOI: 10.1002/app.43844] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yong Xu
- College of Science; China Agricultural University; Beijing 100193 People's Republic of China
| | - Liying Wang
- College of Science; China Agricultural University; Beijing 100193 People's Republic of China
| | - Yujia Tong
- College of Science; China Agricultural University; Beijing 100193 People's Republic of China
| | - Sheng Xiang
- College of Science; China Agricultural University; Beijing 100193 People's Republic of China
| | - Xinyu Guo
- College of Science; China Agricultural University; Beijing 100193 People's Republic of China
| | - Jing Li
- College of Science; China Agricultural University; Beijing 100193 People's Republic of China
| | - Haixiang Gao
- College of Science; China Agricultural University; Beijing 100193 People's Republic of China
| | - Xuemin Wu
- College of Science; China Agricultural University; Beijing 100193 People's Republic of China
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