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Zhang H, Yu B, Fang Y, Xie Z, Xiong Q, Zhang D, Cheng J, Guo Q, Su Y, Zhao J. Long-lasting, UV shielding, and cellulose-based avermectin nano/micro spheres with dual smart stimuli-microenvironment responsiveness for Plutella xylostella control. Carbohydr Polym 2024; 345:122553. [PMID: 39227095 DOI: 10.1016/j.carbpol.2024.122553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 07/22/2024] [Accepted: 07/28/2024] [Indexed: 09/05/2024]
Abstract
The requirement to improve the efficiency of pesticide utilization has led to the development of sustainable and smart stimuli-responsive pesticide delivery systems. Herein, a novel avermectin nano/micro spheres (AVM@HPMC-Oxalate) with sensitive stimuli-response function target to the Lepidoptera pests midgut microenvironment (pH 8.0-9.5) was constructed using hydroxypropyl methylcellulose (HPMC) as the cost-effective and biodegradable material. The avermectin (AVM) loaded nano/micro sphere was achieved with high AVM loading capacity (up to 66.8 %). The simulated release experiment proved the rapid stimuli-responsive and pesticides release function in weak alkaline (pH 9) or cellulase environment, and the release kinetics were explained through release models and SEM characterization. Besides, the nano/micro sphere size made AVM@HPMC-Oxalate has higher foliar retention rate (1.6-2.1-fold higher than commercial formulation) which is beneficial for improving the utilization of pesticides. The in vivo bioassay proved that AVM@HPMC-Oxalate could achieve the long-term control of Plutella xylostella by extending UV shielding performance (9 fold higher than commercial formulation). After 3 h of irradiation, the mortality rate of P. xylostella treated by AVM@HPMC-Oxalate still up to 56.7 % ± 5.8 %. Moreover, AVM@HPMC-Oxalate was less toxic to non-target organisms, and the acute toxicity to zebrafish was reduced by 2-fold compared with AVM technical.
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Affiliation(s)
- Haonan Zhang
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Zhejiang University, Hangzhou 310058, PR China
| | - Bin Yu
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Zhejiang University, Hangzhou 310058, PR China
| | - Yun Fang
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Zhejiang University, Hangzhou 310058, PR China
| | - Zhengang Xie
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Zhejiang University, Hangzhou 310058, PR China
| | - Qiuyu Xiong
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Zhejiang University, Hangzhou 310058, PR China
| | - Donglai Zhang
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Zhejiang University, Hangzhou 310058, PR China
| | - Jingli Cheng
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Zhejiang University, Hangzhou 310058, PR China
| | - Qunzhen Guo
- Zhejiang Zhuji United Chemicals Co., Ltd., Hangzhou 321042, PR China
| | - Yehua Su
- Bayin Aobao Industry Park, Alxa Economic Development Zone, Alxa League, Inner Mongolia, PR China
| | - Jinhao Zhao
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Zhejiang University, Hangzhou 310058, PR China.
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2
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Cheng Y, Guan W, Tang L, Huang Y, Yang W. Cationic Amphiphilic Comb-Shaped Polymer Emulsifier for Fabricating Avermectin Nanoemulsion with Exceptional Leaf Behaviors and Multidimensional Controlled Release. ACS APPLIED MATERIALS & INTERFACES 2024; 16:51318-51332. [PMID: 39276181 DOI: 10.1021/acsami.4c09540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/16/2024]
Abstract
The development of intelligent multifunctional nanopesticides featuring enhanced foliage affinity and hierarchical target release is increasingly pivotal in modern agriculture. In this study, a novel cationic amphiphilic comb-shaped polymer, termed PEI-TA, was prepared via a one-step Michael addition between low-molecular-weight biodegradable polyethylenimine (PEI) and tetradecyl acrylate (TA), followed by neutralization with acetic acid. Using the emulsifier PEI-TA, a positively charged avermectin (AVM) nanoemulsion was prepared via a phase inversion emulsification process. Under optimal formulation, the obtained AVM nanoemulsion (defined as AVM@PEI-TA) demonstrated exceptional properties, including small size (as low as 67.6 nm), high encapsulation efficiency (up to 87.96%), and high stability toward shearing, storage, dilution, and UV irradiation. The emulsifier endowed AVM@PEI-TA with a pronounced thixotropy, so that the droplets exhibited no splash and bounce when they were sprayed on the cabbage leaf. Owing to the electrostatic attraction between the emulsifier and the leaf, AVM@PEI-TA showed improved leaf adhesion, better deposition, and higher washing resistance in contrast to both its negatively charged counterpart and AVM emulsifiable concentrate (AVM-EC). Compared to the large-sized particles, the small-sized particles of the AVM nanoemulsion more effectively traveled long distances through the vascular system of veins after entering the leaf apoplast. Moreover, the nanoparticles lost stability when exposed to multidimensional stimuli, including pH, temperature, esterase, and ursolic acid individually or simultaneously, thereby promoting the release of AVM. The release mechanisms were discussed for understanding the important role of the emulsifier in nanopesticides.
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Affiliation(s)
- Yuxin Cheng
- Key Laboratory of Advanced Materials of Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Wenxun Guan
- Railway Engineering Research Institute, China Academy of Railway Sciences Co. Ltd, Beijing 100081, People's Republic of China
| | - Liming Tang
- Key Laboratory of Advanced Materials of Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Yanbin Huang
- Key Laboratory of Advanced Materials of Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Wantai Yang
- Key Laboratory of Advanced Materials of Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
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3
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Wu C, Li J, Ding JW, Jiang H, Su HF, Li DQ. Maleic anhydride-functionalized cellulose nanocrystal-stabilized high internal phase Pickering emulsion for pesticide delivery. Int J Biol Macromol 2024; 273:132971. [PMID: 38880442 DOI: 10.1016/j.ijbiomac.2024.132971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 05/24/2024] [Accepted: 06/05/2024] [Indexed: 06/18/2024]
Abstract
The salt-responsiveness of Pickering emulsions has significantly influenced their applications due to the large amount of salt on the surface of plant leaves. The present study provided a maleic anhydride-functionalized cellulose nanocrystal-stabilized high internal phase Pickering emulsion (MACNCs-HIPPEs) that was stable to high-concentration salt and used for pesticide delivery. The stability of MACNCs-HIPPEs was investigated by adjusting the oil-phase volume fraction (φ), the MACNCs concentration, NaCl dosages, and the rheological properties. The high internal phase Pickering emulsion was obtained at φ of 0.8 and MACNCs concentration of 2wt% and showed excellent salt stability (NaCl, 1200 mM) and significant storage stability (60 days). The sustained release of imidacloprid (IMI) from imidacloprid-loaded MACNCs-HIPPEs (IMI@MACNCs-HIPPEs) showed a positive correlation to the temperature (15°C, 25°C, 35°C), indicating clear thermo-responsiveness of the prepared pesticide formulation. The test of spread and retention of IMI@MACNCs-HIPPEs on the leaf surface showed a significant advantage compared with the commercial IMI water dispersible granules (CG). All the advantages mentioned above showed the excellent potential of the MACNCs-HIPPEs in delivering lipophilic pesticides.
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Affiliation(s)
- Chao Wu
- College of Chemistry and Chemical Engineering, Xinjiang Agricultural University, Urumchi 830052, Xinjiang, PR China
| | - Jun Li
- College of Chemistry and Chemical Engineering, Xinjiang Agricultural University, Urumchi 830052, Xinjiang, PR China.
| | - Jia-Wei Ding
- College of Chemistry and Chemical Engineering, Xinjiang Agricultural University, Urumchi 830052, Xinjiang, PR China
| | - Hui Jiang
- College of Chemistry and Chemical Engineering, Xinjiang Agricultural University, Urumchi 830052, Xinjiang, PR China
| | - Hui-Fen Su
- College of Chemistry and Chemical Engineering, Xinjiang Agricultural University, Urumchi 830052, Xinjiang, PR China
| | - De-Qiang Li
- College of Chemistry and Chemical Engineering, Xinjiang Agricultural University, Urumchi 830052, Xinjiang, PR China.
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4
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Dong W, Ren Y, Xue H. Fabrication and application of carrier-free and carrier-based nanopesticides in pest management. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2024; 116:e22124. [PMID: 38860794 DOI: 10.1002/arch.22124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 05/04/2024] [Accepted: 05/21/2024] [Indexed: 06/12/2024]
Abstract
Pesticides are widely used for pest control to promote sustained and stable growth of agricultural production. However, indiscriminate pesticide usage poses a great threat to environmental and human health. In recent years, nanotechnology has shown the ability to increase the performance of conventional pesticides and has great potential for improving adhesion to crop foliage, solubility, stability, targeted delivery, and so forth. This review discusses two types of nanopesticides, namely, carrier-free nanopesticides and carrier-based nanopesticides, that can precisely release necessary and sufficient amounts of active ingredients. At first, the basic characterization and preparation methods of these two distinct types of nanopesticides are briefly summarized. Subsequently, current applications and future perspectives on scientific examples and strategies for promoting the usage efficacy and reducing the environmental risks of these nanopesticides were also described. Overall, nanopesticides can promote higher crop yields and lay the foundation for sustainable agriculture and global food security.
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Affiliation(s)
- Wenhao Dong
- Tianjin Key Laboratory of Food and Biotechnology, School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin, China
| | - Yipeng Ren
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin, China
| | - Huaijun Xue
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin, China
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5
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Gundogdu S, Saglam O, Isikber AA, Bozkurt H, Unal H. Pesticide Nanoformulations Based on Sunlight-Activated Controlled Release of Abamectin. ACS OMEGA 2024; 9:10380-10390. [PMID: 38463308 PMCID: PMC10918824 DOI: 10.1021/acsomega.3c08015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/03/2024] [Accepted: 01/10/2024] [Indexed: 03/12/2024]
Abstract
A controlled release system that enables the sunlight-triggered release of a model agrochemical, abamectin (abm), is presented. The release system consists of polydopamine functionalized halloysite nanotubes (HNT-PDA) utilized as photothermal nanocarriers to encapsulate 25 wt % abm and 37 wt % lauric acid (LA), a phase change material, that acts as a heat-activable gatekeeper stopping or facilitating the abm release. When exposed to sunlight for 20 min at 1 and 3 sun light density, the temperature of the photothermal nanocarriers reaches 51 and 122 °C, respectively, which triggers the melting of LA and the consequent release of abm from the nanocarriers. Abm was shown to be released gradually over a period of 10 days when nanohybrids were exposed to sunlight for 6 h per day and to remain stable and kill Myzus persicae (Sulzer) (Hemiptera: Aphididae), green peach aphids, at a mortality rate of over 70% for at least 10 days. Aqueous dispersions of the LA/abm@HNT-PDA nanohybrids were studied in terms of their potential as aqueous sprayable pesticide nanoformulations and presented over 30% suspensibility, 36 mg/cm2 foliar retention, strong rainwater resistance, and a 50% mortality rate for M. persicae at a concentration of 9 mg/mL. The proposed sunlight-activated controlled release system based on photothermal, LA-functionalized HNT-PDA nanocarriers holds great potential as controlled release pesticide nanoformulations.
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Affiliation(s)
- Selin
Oyku Gundogdu
- Faculty
of Engineering and Natural Sciences, Sabanci
University, Istanbul 34956, Turkey
- SUNUM
Nanotechnology Research Center, Sabanci
University, Istanbul 34956, Turkey
| | - Ozgur Saglam
- Faculty
of Agriculture, Namık Kemal University, Tekirdağ 59030, Turkey
| | - Ali Arda Isikber
- Agriculture
Faculty, Plant Protection Department, Kahramanmaraş
Sütçü Imam University, Kahramanmaraş 46100, Turkey
| | - Huseyin Bozkurt
- Agriculture
Faculty, Plant Protection Department, Kahramanmaraş
Sütçü Imam University, Kahramanmaraş 46100, Turkey
| | - Hayriye Unal
- SUNUM
Nanotechnology Research Center, Sabanci
University, Istanbul 34956, Turkey
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6
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Cheng Y, Pan Z, Tang L, Huang Y, Yang W. Fabrication of Eco-Friendly Hydrolyzed Ethylene-Maleic Anhydride Copolymer-Avermectin Nanoemulsion with High Stability, Adhesion Property, pH, and Temperature-Responsive Releasing Behaviors. Molecules 2024; 29:1148. [PMID: 38474660 DOI: 10.3390/molecules29051148] [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: 01/23/2024] [Revised: 02/28/2024] [Accepted: 02/28/2024] [Indexed: 03/14/2024] Open
Abstract
In this study, novel amphiphilic polymer emulsifiers for avermectin (Avm) were synthesized facilely via the hydrolysis of ethylene-maleic anhydride copolymer (EMA) with different agents, and their structures were confirmed by various techniques. Then, water-based Avm-nanoemulsions were fabricated with the emulsifiers via phase inversion emulsification process, and superior emulsifier was selected via the emulsification effects. Using the superior emulsifier, an optimal Avm-nanoemulsion (defined as Avm@HEMA) with satisfying particle size of 156.8 ± 4.9 nm, encapsulation efficiency (EE) of 69.72 ± 4.01% and drug loading capacity (DLC) of 54.93 ± 1.12% was constructed based on response surface methodology (RSM). Owing to the emulsifier, the Avm@HEMA showed a series of advantages, including high stability, ultraviolet resistance, low surface tension, good spreading and high affinity to different leaves. Additionally, compared to pure Avm and Avm-emulsifiable concentrate (Avm-EC), Avm@HEMA displayed a controlled releasing feature. The encapsulated Avm was released quite slowly at normal conditions (pH 7.0, 25 °C or 15 °C) but could be released at an accelerated rate in weak acid (pH 5.5) or weak alkali (pH 8.5) media or at high temperature (40 °C). The drug releasing profiles of Avm@HEMA fit the Korsmeyer-Peppas model quite well at pH 7.0 and 25 °C (controlled by Fickian diffusion) and at pH 7.0 and 10 °C (controlled by non-Fickian diffusion), while it fits the logistic model under other conditions (pH 5.5 and 25 °C, pH 8.5 and 25 °C, pH 7.0 and 40 °C).
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Affiliation(s)
- Yuxin Cheng
- Key Laboratory of Advanced Materials of Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Zeyu Pan
- Key Laboratory of Advanced Materials of Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Liming Tang
- Key Laboratory of Advanced Materials of Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Yanbin Huang
- Key Laboratory of Advanced Materials of Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Wantai Yang
- Key Laboratory of Advanced Materials of Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
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7
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Zhong X, Su G, Zeng Q, Li G, Xu H, Wu H, Zhou H, Zhou X. Preparation of Salicylic Acid-Functionalized Nanopesticides and Their Applications in Enhancing Salt Stress Resistance. ACS APPLIED MATERIALS & INTERFACES 2023; 15:43282-43293. [PMID: 37672316 DOI: 10.1021/acsami.3c06398] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
Soil salinization is one of the global ecological and environmental problems that are tremendously threatening to the sustainable development of agriculture and food supply. In this work, a facile strategy was proposed to enhance the salt stress resistance of plants by preparing salicylic acid (SA)-functionalized mesoporous silica nanocarriers loaded with emamectin benzoate (EB). The obtained nanopesticides demonstrated a particle size of less than 300 nm. As an endogenous plant hormone, the grafting of SA in this nanopesticide system improved the uptake and translocation of pesticides in cucumber plants by 145.06%, and the applications of such nanopesticides enhanced the salt stress resistance of plants. This phenomenon was accounted for by the SA-functionalized nanopesticides increasing the superoxide dismutase and peroxidase activities (640 and 175%, respectively) and reducing the malondialdehyde content (54.10%), correspondingly alleviating the accumulation of reactive oxygen species and cell damage in plants. The above results were also confirmed by Evans blue staining and NBT staining experiments on cucumber leaves. In addition, these nanopesticides exhibited high insecticidal toxicity, and they also demonstrated biosafety toward nontarget organisms due to their sustained release property. Therefore, this work developed a biosafe SA-functionalized nanopesticide system, and these newly developed nanopesticides have potential in the agricultural field for enhancing salt stress resistance of plants.
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Affiliation(s)
- Ximing Zhong
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China of Ministry of Agriculture and Rural Affairs, Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, Innovative Institute for Plant Health, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, Guangdong, PR China
| | - Guofeng Su
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China of Ministry of Agriculture and Rural Affairs, Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, Innovative Institute for Plant Health, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, Guangdong, PR China
| | - Qiye Zeng
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China of Ministry of Agriculture and Rural Affairs, Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, Innovative Institute for Plant Health, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, Guangdong, PR China
| | - Guangze Li
- Shenzhen Noposion Agrochemicals Co., Ltd., Shenzhen 518102, Guangdong, PR China
| | - Hua Xu
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China of Ministry of Agriculture and Rural Affairs, Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, Innovative Institute for Plant Health, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, Guangdong, PR China
| | - Honghong Wu
- College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, PR China
| | - Hongjun Zhou
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China of Ministry of Agriculture and Rural Affairs, Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, Innovative Institute for Plant Health, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, Guangdong, PR China
| | - Xinhua Zhou
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China of Ministry of Agriculture and Rural Affairs, Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, Innovative Institute for Plant Health, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, Guangdong, PR China
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8
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Zhang X, Tang G, Zhou Z, Wang H, Li X, Yan G, Liu Y, Huang Y, Wang J, Cao Y. Fabrication of Enzyme-Responsive Prodrug Self-Assembly Based on Fluazinam for Reducing Toxicity to Aquatic Organisms. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:12678-12687. [PMID: 37595273 DOI: 10.1021/acs.jafc.3c03762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/20/2023]
Abstract
Prodrug-based nanodrug delivery systems were drug formulations by covalently conjugating drugs with inversely polar groups via a cleavable bond to self-assemble into nanoparticles for efficient drug delivery. To improve the utilization efficiency of fluazinam (FZN), enzyme-responsive prodrugs were prepared by conjugating FZN with different alkyl aliphatic acids through a nucleophilic substitution reaction and subsequently self-assembled into nanoparticles (FZNP NPs) without using any harmful adjuvant. The obtained FZNP NPs exhibited excellent efficacies against Sclerotinia sclerotiorum as a result of improved physicochemical properties, including low surface tension, high retention, and enhanced photostability. The LC50 values of FZNP NPs toward zebrafish were 3-8 times that of FZN, which illustrated that the FZNP NPs reduced the detriments of FZN to the aquatic organisms while retaining good biological activity. Therefore, prodrug self-assembly technology would offer a potential method for improving the utilization efficiency of pesticides and lowering the risks to the ecological environment.
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Affiliation(s)
- Xiaohong Zhang
- College of Plant Protection, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, People's Republic of China
| | - Gang Tang
- College of Plant Protection, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, People's Republic of China
| | - Zhiyuan Zhou
- College of Plant Protection, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, People's Republic of China
| | - Huachen Wang
- College of Plant Protection, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, People's Republic of China
| | - Xuan Li
- College of Plant Protection, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, People's Republic of China
| | - Guangyao Yan
- College of Plant Protection, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, People's Republic of China
| | - Yulu Liu
- College of Plant Protection, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, People's Republic of China
| | - Yuqi Huang
- College of Plant Protection, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, People's Republic of China
| | - Jialu Wang
- College of Plant Protection, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, People's Republic of China
| | - Yongsong Cao
- College of Plant Protection, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, People's Republic of China
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9
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Park I, Park G, Choi Y, Jo SW, Kwon HC, Park JS, Cha JW. Facile Detection of Light-Controlled Radical Scavengers from Natural Products Using In Situ UV-LED NMR Spectroscopy. Antioxidants (Basel) 2022; 11:2206. [PMID: 36358578 PMCID: PMC9687055 DOI: 10.3390/antiox11112206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 10/30/2022] [Accepted: 11/04/2022] [Indexed: 09/08/2024] Open
Abstract
With the recent development of chemical analysis technology, attention has been placed on natural light-sensitive compounds that exhibit photoreactivity to expand the structural diversity of natural product chemistry. Photochemical reactions that proceed via a free radical mechanism could be used to modulate the radical-scavenging ability of natural products as well as involve structural change. As the health benefits of radicals are also presented, there is a need for a controllable radical scavenging method for topical and selective application. In this study, we developed a novel acquisition and processing method to identify light-controlled radical scavengers in plant extracts and evaluate their antioxidant activity under light irradiation based on in situ UV-LED NMR spectroscopy. Using the developed method, licochalcones A and B, in which the trans and cis isomers undergo reversible photoisomerization, were selectively identified from licorice root extract, and their light-induced free radical scavenging activity was confirmed.
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Affiliation(s)
| | | | | | | | | | - Jin-Soo Park
- Natural Product Informatics Research Center, KIST Gangneung Institute of Natural Products, Gangneung 25451, Korea
| | - Jin Wook Cha
- Natural Product Informatics Research Center, KIST Gangneung Institute of Natural Products, Gangneung 25451, Korea
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10
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Lv S, Peng L, Zhao Y, Zou X, Sun L. Fabrication of Janus silica nanocarriers for enhancing foliage retention. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Shan P, Lu Y, Lu W, Yin X, Liu H, Li D, Lian X, Wang W, Li Z, Li Z. Biodegradable and Light-Responsive Polymeric Nanoparticles for Environmentally Safe Herbicide Delivery. ACS APPLIED MATERIALS & INTERFACES 2022; 14:43759-43770. [PMID: 36111970 DOI: 10.1021/acsami.2c12106] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The low utilization efficiency of pesticides exerts an adverse impact on the environment and human health. Polymer-related controlled-release nanosized pesticide systems provide a promising and efficient way to overcome the problem. In this work, a biodegradable and light-responsive amphiphilic polymer was synthesized via 1,1,3,3-tetramethylguanidine-promoted polyesterification under mild conditions (low temperature, no vacuum, and no inert gas protection). We used this polymer to fabricate a light-triggered controlled-release nanosized pesticide system. The herbicide, 2,4-dichlorophenoxyacetic acid (2,4-D), was selected as a model drug to show its potential as a controlled-release pesticide system. It was found that the 2,4-D-loaded polymeric nanoparticles were stable without the treatment of UV, while the release rate of 2,4-D from the nanoparticles gradually increased after treatment with UV light. Pot trial showed that the 2,4-D-loaded polymer nanoparticles showed a good herbicidal effect. Finally, toxicity studies suggested that the polymer can reduce toxicity to nontarget organisms.
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Affiliation(s)
- Pengfei Shan
- School of Optometry and Ophthalmology and Eye Hospital, State Key Laboratory of Optometry and Vision Science, Wenzhou Medical University, Wenzhou 325027, China
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325027, China
| | - Yingwen Lu
- School of Optometry and Ophthalmology and Eye Hospital, State Key Laboratory of Optometry and Vision Science, Wenzhou Medical University, Wenzhou 325027, China
| | - Weilin Lu
- School of Optometry and Ophthalmology and Eye Hospital, State Key Laboratory of Optometry and Vision Science, Wenzhou Medical University, Wenzhou 325027, China
| | - Xiangping Yin
- School of Optometry and Ophthalmology and Eye Hospital, State Key Laboratory of Optometry and Vision Science, Wenzhou Medical University, Wenzhou 325027, China
| | - Haiwei Liu
- School of Optometry and Ophthalmology and Eye Hospital, State Key Laboratory of Optometry and Vision Science, Wenzhou Medical University, Wenzhou 325027, China
| | - Daai Li
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325027, China
| | - Xiaoyue Lian
- School of Optometry and Ophthalmology and Eye Hospital, State Key Laboratory of Optometry and Vision Science, Wenzhou Medical University, Wenzhou 325027, China
| | - Weiping Wang
- State Key Laboratory of Pharmaceutical Biotechnology and Dr. Li Dak-Sum Research Centre and Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR 999077, China
| | - Zhongyu Li
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325027, China
| | - Zhihui Li
- School of Optometry and Ophthalmology and Eye Hospital, State Key Laboratory of Optometry and Vision Science, Wenzhou Medical University, Wenzhou 325027, China
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12
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Zhang DX, Wang R, Ren C, Wang Y, Li BX, Mu W, Liu F, Hou Y. One-Step Construct Responsive Lignin/Polysaccharide/Fe Nano Loading System Driven by Digestive Enzymes of Lepidopteran for Precise Delivery of Pesticides. ACS APPLIED MATERIALS & INTERFACES 2022; 14:41337-41347. [PMID: 36053529 DOI: 10.1021/acsami.2c10899] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A strategy that relies on the differences in feeding behavior between pests and natural enemies to deliver insecticides precisely was proposed. After proving that the digestive enzymes in Lepidopteran pests can act as triggers for lignin-based controlled-release carriers, a novel multiple-enzyme-responsive lignin/polysaccharide/Fe nanocarrier was constructed by combining the electrostatic self-assembly and chelation and loaded with lambda-cyhalothrin (LC) to form a nanocapsule suspension loading system. The nanocapsules were LC@sodium lignosulfonate/chitosan/Fe (LC@SL/CS/Fe) and LC@sodium lignosulfonate/alkyl polyglycoside quaternary ammonium salt/Fe (LC@SL/APQAS/Fe). LC@SL/APQAS/Fe was more stable than LC@SL/CS/Fe because it adsorbs more Fe3+, and the half-lives of LC in LC@SL/APQAS/Fe under UV irradiation were prolonged at 4.02- and 6.03-folds than those of LC@SL/CS/Fe and LC emulsifiable concentrate (LC EC), respectively. Both LC@SL/APQAS/Fe and LC@SL/CS/Fe have responsive release functions to laccase and cellulase, and the release rate of the former was slower. The insecticidal activity of LC@SL/APQAS/Fe against Agrotis ipsilonis was similar to those of LC@SL/CS/Fe and LC EC, while the toxicity of LC@SL/APQAS/Fe to the natural enemy was 2-3 times less than those of LC@SL/CS/Fe and LC EC. Meanwhile, the organic solvent component in the nanocapsule suspension was 94% less than that in the EC preparation. Therefore, the nano loading system based on SL/APQAS/Fe is a promising nanoplatform with the advantages of high efficiency, low toxicity, and environmental friendliness.
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Affiliation(s)
- Da-Xia Zhang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Key Lab of Biopesticide and Chemical Biology, Ministry of Education & Fujian Province Key Laboratory of Insect Ecology, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, P. R. China
- College of Plant Protection, Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, Shandong 271018, P. R. China
| | - Rui Wang
- College of Plant Protection, Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, Shandong 271018, P. R. China
| | - Chuangling Ren
- College of Plant Protection, Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, Shandong 271018, P. R. China
| | - Yaru Wang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Key Lab of Biopesticide and Chemical Biology, Ministry of Education & Fujian Province Key Laboratory of Insect Ecology, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, P. R. China
| | - Bei-Xing Li
- College of Plant Protection, Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, Shandong 271018, P. R. China
| | - Wei Mu
- College of Plant Protection, Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, Shandong 271018, P. R. China
| | - Feng Liu
- College of Plant Protection, Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, Shandong 271018, P. R. China
| | - Youming Hou
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Key Lab of Biopesticide and Chemical Biology, Ministry of Education & Fujian Province Key Laboratory of Insect Ecology, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, P. R. China
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13
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Chen L, Huang J, Chen J, Shi Q, Chen T, Qi G, Liu M. Halloysite Nanotube-Based Pesticide Formulations with Enhanced Rain Erosion Resistance, Foliar Adhesion, and Insecticidal Effect. ACS APPLIED MATERIALS & INTERFACES 2022; 14:41605-41617. [PMID: 36041169 DOI: 10.1021/acsami.2c11234] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The incorporation of green and sustainable nanomaterials in pesticide formation is an effective method to lower the use of conventional pesticides without adverse effects on productivity. Here pesticide Pickering emulsions stabilized by halloysite nanotubes (HNTs) were developed for low cost, less environmental pollution, low toxic effects, and better emulsion stability. HNTs were added to chlorantraniliprole (CAP) emulsions, and good stability was exhibited due to the adsorption and aggregation of HNTs at the interface of CAP oil droplets, forming a three-dimensional network structure that prevented the emulsion from aggregation. In addition, Spodoptera frugiperda was used as a pest model and corn was used as a plant model to explore the washout resistance, insecticidal effect, and biological safety of HNTs-CAP emulsion. After spraying emulsion on corn leaves and washing for 10 min, the HNTs-CAP emulsion (5 wt % HNTs) pesticide residue rate was 2.7 times that of pristine CAP emulsion. When the HNT dispersion concentration was 2 wt %, the larva mortality was 83%, which was 1.5 times that of the CAP emulsion group. These results demonstrated that HNTs-CAP emulsion showed good foliar adhesion, rainfall resistance, and insecticidal effect. The tubular clay-based nanopesticide formulations show potential applications in the control of crop pests with modern agriculture technology.
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Affiliation(s)
- Linhong Chen
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 511443, China
| | - Jiawei Huang
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 511443, China
| | - Jie Chen
- Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Plant Protection Research Institute, Guangdong Academy of Agricultural Science, Guangdong, Guangzhou 510640, China
| | - Qingxing Shi
- Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Plant Protection Research Institute, Guangdong Academy of Agricultural Science, Guangdong, Guangzhou 510640, China
| | - Ting Chen
- Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Plant Protection Research Institute, Guangdong Academy of Agricultural Science, Guangdong, Guangzhou 510640, China
| | - Guojun Qi
- Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Plant Protection Research Institute, Guangdong Academy of Agricultural Science, Guangdong, Guangzhou 510640, China
| | - Mingxian Liu
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 511443, China
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14
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Zhang Z, Shi Y, Ding C, Lv Y, Wang M, Sun Y, Sun T. Fabrication of an Environmentally Friendly 2D MXene‐Avermectin Hybrid Nanopesticide for Use Against Spodoptera Frugiperda. ChemistrySelect 2022. [DOI: 10.1002/slct.202200995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zhaocong Zhang
- Key Laboratory of Forest Plant Ecology Ministry of Education College of Chemistry Chemical Engineering and Resource Utilization Northeast Forestry University Harbin 150040 P. R. China
| | - Yangtian Shi
- Key Laboratory of Forest Plant Ecology Ministry of Education College of Chemistry Chemical Engineering and Resource Utilization Northeast Forestry University Harbin 150040 P. R. China
| | - Chengwen Ding
- Key Laboratory of Forest Plant Ecology Ministry of Education College of Chemistry Chemical Engineering and Resource Utilization Northeast Forestry University Harbin 150040 P. R. China
| | - Yutong Lv
- Key Laboratory of Forest Plant Ecology Ministry of Education College of Chemistry Chemical Engineering and Resource Utilization Northeast Forestry University Harbin 150040 P. R. China
| | - Meiting Wang
- Key Laboratory of Forest Plant Ecology Ministry of Education College of Chemistry Chemical Engineering and Resource Utilization Northeast Forestry University Harbin 150040 P. R. China
| | - Yuan Sun
- Center of Pharmaceutical Engineering and Technology College of Pharmacy Harbin University of Commerce Harbin 150076 P. R. China
| | - Tiedong Sun
- Key Laboratory of Forest Plant Ecology Ministry of Education College of Chemistry Chemical Engineering and Resource Utilization Northeast Forestry University Harbin 150040 P. R. China
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15
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Size Effect of Mesoporous Silica Nanoparticles on Pesticide Loading, Release, and Delivery in Cucumber Plants. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11020575] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Mesoporous silica nanoparticles (MSN) are widely used as pesticide carriers to enhance their effective utilization, since it can promote the solubility and absorption of pesticides by plants. For plants, the particle size of pesticides influences their absorption and efficacy. Herein, is our research work of the size effect of MSN on the loading, release, and delivery behavior of pyraoxystrobin (Pyr) in cucumber plants. The well-ordered Pyr-loaded carbon quantum dots-MSN (Pyr@M) with sizes of 15, 100, and 200 nm were prepared. A comparative study among different particle sizes of Pyr@M was carried out on the aspects of control release performance, loading content, uptake, and transportation performance in cucumber plants. It was found that the loading content increased as the particle size increased. The nanoparticles as carriers increased the solubility of insoluble Pyr, but the nanoparticle size had no clear difference impact on the release rate. The efficiency of the cellular uptake strongly depended on the particle size. The smaller the MSN size, the easier it was to be absorbed and transmitted by cucumber plants. Compared to the free Pyr, the upward transportation rate of Pyr from Pyr@M in plant increased by 3.5 times. These findings provide new theoretical basis to design the MSN pesticide delivery system.
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16
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Zhang M, Tu Z, He P, Hua W, Chen Y, Shi Z, Wei Z, Ren T, Zhang B. An efficient organosilane-modified polycarboxylate dispersant with excellent dispersing performance and superior wettability for tebuconazole suspension concentrate. NEW J CHEM 2021. [DOI: 10.1039/d1nj01899j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The dispersion stability and wettability of suspension concentrates are beneficial for improvement of the utilization rate of pesticides.
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Affiliation(s)
- Mingqian Zhang
- Shanghai Engineering Research Center of Green Energy Chemical Engineering, The Key Laboratory of Resource Chemistry of Ministry of Education, College of Chemistry and Materials Science, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, P. R. China
| | - Zhenbei Tu
- Shanghai Engineering Research Center of Green Energy Chemical Engineering, The Key Laboratory of Resource Chemistry of Ministry of Education, College of Chemistry and Materials Science, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, P. R. China
| | - Penghui He
- Shanghai Engineering Research Center of Green Energy Chemical Engineering, The Key Laboratory of Resource Chemistry of Ministry of Education, College of Chemistry and Materials Science, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, P. R. China
| | - Wendong Hua
- Shanghai Engineering Research Center of Green Energy Chemical Engineering, The Key Laboratory of Resource Chemistry of Ministry of Education, College of Chemistry and Materials Science, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, P. R. China
| | - Ying Chen
- Shanghai Engineering Research Center of Green Energy Chemical Engineering, The Key Laboratory of Resource Chemistry of Ministry of Education, 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, The Key Laboratory of Resource Chemistry of Ministry of Education, College of Chemistry and Materials Science, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, P. R. China
| | - Zhenli Wei
- Shanghai Engineering Research Center of Green Energy Chemical Engineering, The Key Laboratory of Resource Chemistry of Ministry of Education, College of Chemistry and Materials Science, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, P. R. China
| | - Tianrui Ren
- Shanghai Engineering Research Center of Green Energy Chemical Engineering, The Key Laboratory of Resource Chemistry of Ministry of Education, 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, The Key Laboratory of Resource Chemistry of Ministry of Education, College of Chemistry and Materials Science, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, P. R. China
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17
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Wu T, Fang X, Yang Y, Meng W, Yao P, Liu Q, Zhang B, Liu F, Zou A, Cheng J. Eco-friendly Water-Based λ-Cyhalothrin Polydopamine Microcapsule Suspension with High Adhesion on Leaf for Reducing Pesticides Loss. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:12549-12557. [PMID: 33112140 DOI: 10.1021/acs.jafc.0c02245] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Recently, innovations of nano/microcarrier formulations have been focused on improving application efficiencies and retention time. In this study, a water-based 2.5% λ-cyhalothrin (LC) microcapsule suspension (CS) was developed by orthogonal test with biodegradable and adhesive polydopamine (PDA) microcapsules (MCs) as carriers. The obtained LC-PDA CS had good suspension properties, flow behavior, storage stability, and rheological properties. LC-PDA CS had higher retention, wettability, and decreased rainwater washing out on the leaves than commercial CS. LC-PDA CS displayed higher insecticidal activity against Lipaphis erysimi compared to commercial CS. LC-PDA CS reduced the toxicity of LC to the aquatic organism Danio rerio compared to LC. The above results demonstrated that LC-PDA CS would be eco-friendly water-based pesticides carrier system for prolonging the retention time on target leaf and reducing toxicity to aquatic organisms.
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Affiliation(s)
- Tong Wu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Xialun Fang
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Ying Yang
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Wenyan Meng
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Pengji Yao
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Qin Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Bo Zhang
- The Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Engineering Research Center of Green Energy Chemical Engineering, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Feng Liu
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an 271001, China
| | - Aihua Zou
- Shanghai Key Laboratory of Functional Materials Chemistry, State Key Laboratory of Bioreactor Engineering and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jiagao Cheng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
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18
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Feng J, Chen W, Shen Y, Chen Q, Yang J, Zhang M, Yang W, Yuan S. Fabrication of abamectin-loaded mesoporous silica nanoparticles by emulsion-solvent evaporation to improve photolysis stability and extend insecticidal activity. NANOTECHNOLOGY 2020; 31:345705. [PMID: 32392541 DOI: 10.1088/1361-6528/ab91f0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Mesoporous silica nanoparticles (MSNs) can be designed to effectively load, protect, and control the release of pesticides. In this study, emulsion-solvent evaporation was used to fabricate abamectin-loaded MSNs. Our method could deliver abamectin in the process of MSN self-assembly, resulting in simple operation, short preparation period, and outstanding drug carrying capacity. The characteristics of abamectin-loaded MSNs, including morphology, loading content, stability against photolysis, controlled release behavior, and toxicological effect, were systematically investigated. Abamectin-loaded MSNs were successfully produced, having spherical shape, rough surface, uniform particle sizes, typically hollow structure, high loading efficiency (44.8%), excellent photodegradation-reducing ability, and controlled-release properties. The biological activity survey for abamectin-loaded MSNs showed excellent toxicological properties against Plutella xylostella larvae, and maintained biological activity until the 15th day, with 70% mortality of the target insect. The results of this study are beneficial for the development of a delivery system for the rational and effective usage of pesticides.
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Affiliation(s)
- Jianguo Feng
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, People's Republic of China
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19
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Cui B, Gao F, Zeng Z, Wang C, Wang Y, Sun C, Zhao X, Guo L, Shen Y, Liu G, Cui H. Construction and characterization of avermectin B 2 solid nanodispersion. Sci Rep 2020; 10:9096. [PMID: 32499551 PMCID: PMC7272430 DOI: 10.1038/s41598-020-66098-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 05/05/2020] [Indexed: 11/16/2022] Open
Abstract
Poorly water-soluble pesticide compounds are difficult to be formulated as environmentally friendly formulations with high efficacy. For the conventional formulations, more than 50% of pesticides are lost during application due to the decomposition of active ingredient, dust drift and running off. Therefore, there is an urgent need to construct a novel formulation for improving the bioavailability of pesticides. The avermectin B2 solid nanodispersion was developed by self-emulsifying and solidification technology. The average particle size, surface tension and contact angle on cabbage leaves of the solid nanodispersion were 35.3 nm, 36.6 mN/m and 58°, respectively. The toxicities of the nanoformulation against diamondback moths and root-knot nematode were more than 1.7 times that of conventional emulsion in water and water dispersible granule. This investigation demonstrated that for foliage-applied pesticides, the formulation bioavailability had positive correlation with wettability which was negatively correlated with surface tension and contact angle. This study provides an easy and scalable technique to construct the effective and environmentally friendly nanoformulations. The toxicity improvement of the solid nanodispersion will significantly reduce dosage and environmental pollution of pesticide. The clarified relationship between formulation parameters and biological activity will contribute to the design and construction of novel pesticide formulations.
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Affiliation(s)
- 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
| | - Chunxin Wang
- 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
| | - Changjiao Sun
- 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
| | - Liang Guo
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yue Shen
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Guoqiang Liu
- 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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20
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Liang Y, Gao Y, Wang W, Dong H, Tang R, Yang J, Niu J, Zhou Z, Jiang N, Cao Y. Fabrication of smart stimuli-responsive mesoporous organosilica nano-vehicles for targeted pesticide delivery. JOURNAL OF HAZARDOUS MATERIALS 2020; 389:122075. [PMID: 31972522 DOI: 10.1016/j.jhazmat.2020.122075] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 12/18/2019] [Accepted: 01/10/2020] [Indexed: 05/18/2023]
Abstract
It is highly desirable to construct stimuli-responsive nanocarriers for improving pesticides targeting and preventing the pesticides premature release. In this work, a novel redox and α-amylase dual stimuli-responsive pesticide delivery system was established by bonding functionalized starch with biodegradable disulfide-bond-bridged mesoporous silica nanoparticles which loaded with avermectin (avermectin@MSNs-ss-starch nanoparticles). The results demonstrated that the loading capacity of avermectin@MSNs-ss-starch nanoparticles for avermectin was approximately 9.3 %. The starch attached covalently on the mesoporous silica nanoparticles could protect avermectin from photodegradation and prevent premature release of active ingredient. Meanwhile, the coated starch and disulfide-bridged structure of nanoparticles could be decomposed and consequently release of the avermectin on demand when nanoparticles were metabolized by glutathione and α-amylase in insects. The bioactivity survey confirmed that avermectin@MSNs-ss-starch nanoparticles had a longer duration in controlling Plutella xylostella larvae compared to avermectin emulsifiable concentrate. In consideration of the superior insecticidal activity and free of toxic organic solvent, this target-specific pesticide release system has promising potential in pest management.
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Affiliation(s)
- You Liang
- College of Plant Protection, China Agricultural University, Beijing, China
| | - Yunhao Gao
- College of Plant Protection, China Agricultural University, Beijing, China
| | - Weichen Wang
- College of Plant Protection, China Agricultural University, Beijing, China
| | - Hongqiang Dong
- College of Plant Protection, China Agricultural University, Beijing, China
| | - Rong Tang
- College of Plant Protection, China Agricultural University, Beijing, China
| | - Jiale Yang
- College of Plant Protection, China Agricultural University, Beijing, China
| | - Junfan Niu
- College of Plant Protection, China Agricultural University, Beijing, China
| | - Zhiyuan Zhou
- College of Plant Protection, China Agricultural University, Beijing, China
| | - Na Jiang
- College of Plant Protection, China Agricultural University, Beijing, China
| | - Yongsong Cao
- College of Plant Protection, China Agricultural University, Beijing, China.
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21
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Preparation of self-dispersed lignin-based drug-loaded material and its application in avermectin nano-formulation. Int J Biol Macromol 2020; 151:421-427. [DOI: 10.1016/j.ijbiomac.2020.02.114] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 02/11/2020] [Accepted: 02/11/2020] [Indexed: 01/24/2023]
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22
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Xiao D, Liang W, Li Z, Cheng J, Du Y, Zhao J. High foliar affinity cellulose for the preparation of efficient and safe fipronil formulation. JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121408. [PMID: 31677913 DOI: 10.1016/j.jhazmat.2019.121408] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 10/05/2019] [Accepted: 10/05/2019] [Indexed: 05/15/2023]
Abstract
In this work, fipronil was encapsulated within ethanediamine-modified carboxymethylcellulose (ACMC) to prepare an efficient and environmentally safe pesticide formulation (ACMCF). The chemical structure, morphology, foliar adhesion, bioactivity, and soil mobility of ACMCF were also systematically investigated. Results demonstrated that fipronil was encapsulated to form microcapsules successfully. Compared with the traditional fipronil emulsion (FE), ACMCF had a relatively high retention rate on cucumber and peanut leaves. The acute contact toxicity of ACMCF (LD50 = 0.151 μg a.i./bee) toward Apis mellifera was far lower than that of FE (LD50 = 0.00204 μg a.i./bee). Biological activity surveys confirmed that ACMCF has insecticidal ability against Plutella xylostella similar to that of FE. Moreover, the leaching and migration properties of ACMCF in three different kinds soils were weaker than those of FE. These results imply that ACMCF has promising application potential in increasing the effective utilization of fipronil and reducing risk to non-target organisms and the environment.
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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
| | - Zhongshan Li
- 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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23
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Xiao D, Cheng J, Liang W, Cheng C, Wang Q, Chai R, Yan Z, Du Y, Zhao J. Innovative Approach to Nano Thiazole-Zn with Promising Physicochemical and Bioactive Properties by Nanoreactor Construction. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:11577-11583. [PMID: 31557026 DOI: 10.1021/acs.jafc.9b03700] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Nanotechnology has provided a novel approach for the preparation of a safe and highly effective pesticide formulation. Thiazole-Zn, a widely used bactericide, was successfully prepared at nanoscale by an innovative approach of final synthesis process control. Its plausible formation mechanism based on restricted particle aggregation in a nanoreactor was elucidated. Then in order to assess the application performance of thiazole-Zn nanoparticle, the nanoformulation (NPF) was conveniently formulated. Interestingly, the physicochemical properties of NPF showed better than that of the commercial pesticide formulation (CPF) in dispersibility, wettability, spreadability, and stability. At the same time, the in vitro bioassay showed that the minimum inhibitory concentrations (MICs) of NPF against Xanthomonas oryzae pv Oryzae (XOO), Xanthomonas oryzae pv Oryzicola (XOC), Erwinia carotovora subsp. Carotovora (Jones) Holland (ECC), and Erwinia chrysanthemi pv Zeae (ECZ) were 46.88, 93.75, 93.75, and 375.00 mg/L, respectively, whereas those of CPF were 93.75, 375.00, 375.00, and 875.00 mg/L, respectively. Therefore, NPF exhibited stronger antibacterial activity against the above-mentioned pathogens. Moreover, NPF was more effective to bacterial blight of rice than CPF in field trial. As a conclusion, nanotechnology for pesticides by synthesis process control will have a potential in improving the utilization efficiency and relieving the corresponding environmental pollution.
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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 , P. R. 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 , P. R. 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 , P. R. China
| | - Cheng Cheng
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects , Zhejiang University , Hangzhou 310058 , P. R. China
| | - Qiangwei Wang
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects , Zhejiang University , Hangzhou 310058 , P. R. China
| | - Rongyao Chai
- Institute of Plant Protection and Microbiology , Zhejiang Academy of Agricultural Sciences , Hangzhou 310021 , P. R. China
| | - Zhenlong Yan
- Seed Management Station of Qujiang District , Quzhou 324022 , P. R. 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 , P. R. 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 , P. R. China
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Qin H, Zhou X, Gu D, Li L, Kan C. Preparation and Characterization of a Novel Waterborne Lambda-Cyhalothrin/Alkyd Nanoemulsion. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:10587-10594. [PMID: 31497957 DOI: 10.1021/acs.jafc.9b03681] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Inefficient usage and overdosage of conventional pesticide formulations has resulted in large economic losses and environmental pollution due to their poor water solubility and weak adhesion to foliage. In order to develop a green and efficient pesticide formulation, a kind of alkyd resin (AR) based on vegetable oil was first synthesized and used to fabricate the lambda-cyhalothrin/AR (LC/AR) nanoemulsion via in situ phase inverse emulsification, and its properties were then investigated. Results showed that the particle size of the LC/AR nanoemulsion was 50-150 nm with maximum LC loading capacity of as much as 40.9 wt %, high encapsulation efficiency >90%, and great stability in multiple environments. The LC/AR nanoemulsion exhibited better controlled release characteristics compared with LC commercial formulations, and a stronger adhesion on the foliage of the resulted nanoemulsion was also observed, which was attributed to low surface tension and strong interactions with foliar surfaces.
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Affiliation(s)
- He Qin
- Department of Chemical Engineering and Key Laboratory of Advanced Materials of Ministry of Education of China , Tsinghua University , Beijing 100084 , China
| | - Xiaoteng Zhou
- Department of Chemical Engineering and Key Laboratory of Advanced Materials of Ministry of Education of China , Tsinghua University , Beijing 100084 , China
| | - Danfei Gu
- Department of Chemical Engineering and Key Laboratory of Advanced Materials of Ministry of Education of China , Tsinghua University , Beijing 100084 , China
| | - Lingxiao Li
- Department of Chemical Engineering and Key Laboratory of Advanced Materials of Ministry of Education of China , Tsinghua University , Beijing 100084 , China
| | - Chengyou Kan
- Department of Chemical Engineering and Key Laboratory of Advanced Materials of Ministry of Education of China , Tsinghua University , Beijing 100084 , China
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Han J, Weng Y, Xu J, Guo B. Thermo-sensitive micelles based on amphiphilic poly(butylene 2-methylsuccinate)-poly(ethylene glycol) multi-block copolyesters as the pesticide carriers. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.04.057] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Zhang X, Xu Z, Wu M, Qian X, Lin D, Zhang H, Tang J, Zeng T, Yao W, Filser J, Li L, Sharma VK. Potential environmental risks of nanopesticides: Application of Cu(OH) 2 nanopesticides to soil mitigates the degradation of neonicotinoid thiacloprid. ENVIRONMENT INTERNATIONAL 2019; 129:42-50. [PMID: 31108392 DOI: 10.1016/j.envint.2019.05.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 04/19/2019] [Accepted: 05/09/2019] [Indexed: 06/09/2023]
Abstract
Cu(OH)2 nanopesticides and organic insecticides are continuously applied to soil at a temporal interval, while knowledge about the impact of Cu(OH)2 nanopesticides on organic insecticides degradation is currently scarce, resulting in poorly comprehensive evaluation of the potential environmental risks of Cu(OH)2 nanopesticides. Herein, a commercial Cu(OH)2 nanopesticide formulation (NPF), the active ingredient of NPF (AI-NPF), the prepared Cu(OH)2 nanotubes (NT) with comparable morphology and size to AI-NPF, and CuSO4 were respectively applied to soil at normal doses (0.5, 5 and 50 mg/kg), followed by an application of neonicotinoid thiacloprid after an interval of 21 d, showing that NPF at doses of 5 and 50 mg/kg significantly (p < 0.05) mitigated thiacloprid degradation compared to control and CuSO4. Furthermore, AI-NPF was the primary component that contributed to the mitigation effect of NPF, which was also validated by the NT. Large differences in the degradation efficiency of thiacloprid in sterilized and unsterilized soils with Cu(OH)2 nanopesticides suggested that biodegradation was the primary process responsible for thiacloprid degradation, especially as chemical degradation was negligible. Besides a decrease of thiacloprid bioavailability due to adsorption by Cu(OH)2 nanopesticides, we demonstrated that Cu(OH)2 nanopesticides changed soil microbial communities, reduced nitrile hydratase activity and down-regulated thiacloprid-degradative nth gene abundance, which thus mitigated thiacloprid biodegradation. Clearly, this study shed light on the potential environmental risks of Cu(OH)2 nanopesticide.
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Affiliation(s)
- Xiaoxia Zhang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Zhenlan Xu
- Institute of Quality and Standard of Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Mansha Wu
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xiaoting Qian
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Daohui Lin
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Hangjun Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Juan Tang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Tao Zeng
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Weijun Yao
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Juliane Filser
- UFT-Centre for Environmental Research and Sustainable Technology, Department General and Theoretical Ecology, Faculty 2 (Biology/Chemistry), University of Bremen, Bremen 28359, Germany
| | - Lingxiangyu Li
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Virender K Sharma
- Department of Environmental and Occupational Health, School of Public Health, Texas A&M University, College Station 77843, United States
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Han J, Shi J, Xie Z, Xu J, Guo B. Synthesis, Properties of Biodegradable Poly(Butylene Succinate- co-Butylene 2-Methylsuccinate) and Application for Sustainable Release. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E1507. [PMID: 31075823 PMCID: PMC6539853 DOI: 10.3390/ma12091507] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/02/2019] [Accepted: 05/07/2019] [Indexed: 12/28/2022]
Abstract
A novel biobased and biodegradable polyester, i.e., poly(butylene succinate-co-butylene 2-methylsuccinate) (P(BS-BMS)) was synthesized by succinic acid (SA), 2-methylsuccinic acid (MSA), and 1,4-butanediol (BDO) via a typically two-step esterification and polycondensation procedure. The chemical structure and macromolecular weight of obtained copolymers were characterized by 1H NMR, 13C NMR, and GPC. The melting temperature and degree of crystallinity were also studied by DSC, and it was found that the values were gradually decreased with increasing of MSA content, while the thermal stability remained almost unchanged which was tested by TGA. In addition, the biodegradation rate of the P(BS-BMS) copolymers could be controlled by adjusting the ratio of SA and MSA, and such biodegradability could make P(BS-BMS) copolymers avoid microplastic pollution which may be brought to the environment for applications in agricultural field. When we applied P(BS-BMS) copolymers as pesticide carriers which were prepared by premix membrane emulsification (PME) method for controlling Avermectin delivery, an improvement of dispersion and utilization of active ingredient was obviously witnessed. It showed a burst release process first followed by a sustained release of Avermectin for a long period, which had a great potential to be an effective and environmental friendly pesticide-release vehicle.
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Affiliation(s)
- Jiarui Han
- Key Laboratory of Advanced Materials of Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Jiaxin Shi
- Key Laboratory of Advanced Materials of Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Zhining Xie
- Key Laboratory of Advanced Materials of Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Jun Xu
- Key Laboratory of Advanced Materials of Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Baohua Guo
- Key Laboratory of Advanced Materials of Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
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Liang W, Yu A, Wang G, Zheng F, Hu P, Jia J, Xu H. A novel water-based chitosan-La pesticide nanocarrier enhancing defense responses in rice (Oryza sativa L) growth. Carbohydr Polym 2018; 199:437-444. [DOI: 10.1016/j.carbpol.2018.07.042] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 07/12/2018] [Accepted: 07/13/2018] [Indexed: 12/29/2022]
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Guan W, Tang L, Wang Y, Cui H. Fabrication of an Effective Avermectin Nanoemulsion Using a Cleavable Succinic Ester Emulsifier. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:7568-7576. [PMID: 29976065 DOI: 10.1021/acs.jafc.8b01388] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this study, a new emulsifier precursor was prepared via esterification of avermectin with succinic anhydride. The chemical structure of the product was confirmed to be monosubstituted avermectin. After neutralization with triethanolamine, it exhibited adequate emulsification ability for avermectin. Avermectin was then encapsulated in nanoparticles in the nanoemulsion with a high drug loading up to 60 wt % and high stability. The nanoemulsion of nanoparticles that serves as a carrier of avermectin shows highly efficient pesticide characteristics, including low surface tension, high affinity to leaves, and improved photostability. In the presence of esterase or under strongly basic conditions, the ester bonds of the emulsifier can be hydrolyzed, and the encapsulated avermectin molecules can be released in an accelerated manner. The nanoemulsion exhibited improved insecticidal effect compared with commercial emulsifiable concentrate, which was attributed to the cleavage of ester bonds of the emulsifier by esterase in vivo.
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Affiliation(s)
- Wenxun Guan
- Key Laboratory of Advanced Materials of Ministry of Education of China Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Liming Tang
- Key Laboratory of Advanced Materials of Ministry of Education of China Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Yan Wang
- Institute of Environment and Sustainable Development in Agriculture , Chinese Academy of Agriculture Sciences , Beijing 100081 , China
| | - Haixin Cui
- Institute of Environment and Sustainable Development in Agriculture , Chinese Academy of Agriculture Sciences , Beijing 100081 , China
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Sun G, Zhang J, Jin S, Zhang J. Synthesis and insecticidal activities of 5-deoxyavermectin B2a oxime ester derivatives. RSC Adv 2018; 8:3774-3781. [PMID: 35542930 PMCID: PMC9078043 DOI: 10.1039/c7ra13258a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 01/15/2018] [Indexed: 12/28/2022] Open
Abstract
Three series of avermectin B2a oxime ester derivatives were synthesized using avermectin B2a as starting material. All of the compounds were characterized by 1H NMR, 13C NMR, and HRMS. Bioassay results indicated that some of the derivatives (8b, 8c, 8d, 8f, 11k, 11l, 14c, 14j) showed potent insecticidal activities against Myzus persicae, Caenorhabditis elegans, or Tetranychus cinnabarinus. As shown by initial insecticidal activity data, compound 8d showed excellent activities (>90%) against M. persicae and C. elegans, which were more potent than that of avermectin B2a. Compound 8d might be a lead compound for designing new avermectin B2a derivatives.
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Affiliation(s)
- Guoshao Sun
- Department of Applied Chemistry, College of Science, China Agricultural University Beijing 100193 P. R. China
| | - Jingjing Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University Beijing 100193 P. R. China
| | - Shuhui Jin
- Department of Applied Chemistry, College of Science, China Agricultural University Beijing 100193 P. R. China
| | - Jianjun Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University Beijing 100193 P. R. China
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