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Ribeiro M, Simões M, Vitorino C, Mascarenhas-Melo F. Hydrogels in Cutaneous Wound Healing: Insights into Characterization, Properties, Formulation and Therapeutic Potential. Gels 2024; 10:188. [PMID: 38534606 DOI: 10.3390/gels10030188] [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: 02/01/2024] [Revised: 02/26/2024] [Accepted: 03/05/2024] [Indexed: 03/28/2024] Open
Abstract
Hydrogels are polymeric materials that possess a set of characteristics meeting various requirements of an ideal wound dressing, making them promising for wound care. These features include, among others, the ability to absorb and retain large amounts of water and the capacity to closely mimic native structures, such as the extracellular matrix, facilitating various cellular processes like proliferation and differentiation. The polymers used in hydrogel formulations exhibit a broad spectrum of properties, allowing them to be classified into two main categories: natural polymers like collagen and chitosan, and synthetic polymers such as polyurethane and polyethylene glycol. This review offers a comprehensive overview and critical analysis of the key polymers that can constitute hydrogels, beginning with a brief contextualization of the polymers. It delves into their function, origin, and chemical structure, highlighting key sources of extraction and obtaining. Additionally, this review encompasses the main intrinsic properties of these polymers and their roles in the wound healing process, accompanied, whenever available, by explanations of the underlying mechanisms of action. It also addresses limitations and describes some studies on the effectiveness of isolated polymers in promoting skin regeneration and wound healing. Subsequently, we briefly discuss some application strategies of hydrogels derived from their intrinsic potential to promote the wound healing process. This can be achieved due to their role in the stimulation of angiogenesis, for example, or through the incorporation of substances like growth factors or drugs, such as antimicrobials, imparting new properties to the hydrogels. In addition to substance incorporation, the potential of hydrogels is also related to their ability to serve as a three-dimensional matrix for cell culture, whether it involves loading cells into the hydrogel or recruiting cells to the wound site, where they proliferate on the scaffold to form new tissue. The latter strategy presupposes the incorporation of biosensors into the hydrogel for real-time monitoring of wound conditions, such as temperature and pH. Future prospects are then ultimately addressed. As far as we are aware, this manuscript represents the first comprehensive approach that brings together and critically analyzes fundamental aspects of both natural and synthetic polymers constituting hydrogels in the context of cutaneous wound healing. It will serve as a foundational point for future studies, aiming to contribute to the development of an effective and environmentally friendly dressing for wounds.
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Affiliation(s)
- Mariana Ribeiro
- Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
- CISUC-Center for Informatics and Systems, University of Coimbra, Pinhal de Marrocos, 3030-290 Coimbra, Portugal
- Coimbra Chemistry Centre, Institute of Molecular Sciences-IMS, Department of Chemistry, University of Coimbra, 3000-535 Coimbra, Portugal
| | - Marco Simões
- CISUC-Center for Informatics and Systems, University of Coimbra, Pinhal de Marrocos, 3030-290 Coimbra, Portugal
- CIBIT-Coimbra Institute for Biomedical Imaging and Translational Research, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Carla Vitorino
- Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
- Coimbra Chemistry Centre, Institute of Molecular Sciences-IMS, Department of Chemistry, University of Coimbra, 3000-535 Coimbra, Portugal
- CIBIT-Coimbra Institute for Biomedical Imaging and Translational Research, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Filipa Mascarenhas-Melo
- Higher School of Health, Polytechnic Institute of Guarda, Rua da Cadeia, 6300-307 Guarda, Portugal
- REQUIMTE/LAQV, Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
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Purkait A, Hazra DK, Kole R, Mandal S, Bhattacharrya S, Karmakar R. Harnessing the Carrier Solvent Complexity of Crop Biostimulant Liquid Formulations Using Locally Available Transesterified Waste Cooking Oil: Economic Recycling, Solvent Performance, and Bioefficacy Evaluation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:1017-1024. [PMID: 38170676 DOI: 10.1021/acs.jafc.3c06167] [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: 01/05/2024]
Abstract
Locally sourced waste cooking oil (WCO) was successfully base-catalyzed and transesterified with methanol into biodiesel to produce biostimulant (nitrobenzene) formulations and replace high-risk carrier solvents. Ideal synthesis conditions were composed of 1% NaOH, MeOH/oil molar ratio (6:1), reaction temperature (65 °C), a 3 h mixing rate, and 97-98% yields. Gas chromatography-mass spectrometry (GC-MS) analysis identified five fatty acid methyl esters (FAMEs) including palmitic, linoleic, oleic, stearic, and eicosenoic acids with high solubilization and olfactory characteristics. Using anionic and nonionic emulsifiers in conjunction with recycled biodiesel, a stable emulsifiable concentrate (NB 35% EC) was created with greater storage stability, wettability, and spreading capabilities than those of organic solvent-based ones. The highest counts of fruits per plant (35.80), flowers per plant (60.00), yield per plant (3.56 kg), and yield per hectare (143.7 quintals) were recorded in treatments with 4 mL/L biodiesel-based EC in field bioassays. In addition to having superior biosafety, FAME-based EC exhibits minimal phytotoxicity and is less harmful to aquatic creatures. It was discovered that the average cost-effectiveness was 5.49 times less expensive than solvent-based EC. In order to utilize waste oils as a locally obtained, sustainable alternative solvent with a wide solubilization range, low ecotax profile, circular economy, and high renewable carbon index, this integrative technique was expanded.
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Affiliation(s)
- Aloke Purkait
- Department of Soil Science and Agricultural Chemistry, Palli-Siksha Bhavana (Institute of Agriculture), Visva - Bharati, Birbhum, 731 236 Sriniketan, West Bengal, India
| | - Dipak Kumar Hazra
- All India Network Project n Pesticide Residues, Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, 741 252 Nadia, West Bengal, India
- Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, 741 252 Nadia, West Bengal, India
| | - Ramen Kole
- Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, 741 252 Nadia, West Bengal, India
| | - Swagata Mandal
- All India Network Project n Pesticide Residues, Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, 741 252 Nadia, West Bengal, India
| | - Sudip Bhattacharrya
- All India Network Project n Pesticide Residues, Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, 741 252 Nadia, West Bengal, India
| | - Rajib Karmakar
- All India Network Project n Pesticide Residues, Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, 741 252 Nadia, West Bengal, India
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Li M, Wang Z, Meng H, Wang D, Deng X, Zhou H. Formulation and Characterization of Matrine Oil Dispersion to Improve Droplet Wetting and Deposition. Molecules 2023; 28:6896. [PMID: 37836739 PMCID: PMC10574598 DOI: 10.3390/molecules28196896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/27/2023] [Accepted: 09/29/2023] [Indexed: 10/15/2023] Open
Abstract
The unreasonable use of chemical pesticides has caused serious damage to crops and the ecological environment. The botanical pesticide matrine has attracted attention as an environmentally friendly pesticide. Compared with traditional spraying methods, unmanned aerial vehicle (UAV) spraying has the advantages of safety, rapidity, uniform droplets, low dosages, and no terrain or crop restrictions. In this study, matrine OD was prepared according to the application requirements of flight prevention preparations using three different emulsifiers. The stability, wettability, particle size and distribution, and spraying performance of matrine OD were studied. The results indicated that when the amount of emulsifier was 8%, the three types of matrine OD had good stability. The stability, wettability, particle size and distribution, and spray performance of the suspension prepared using emulsifier VO/03 were better than the other two emulsifiers. Therefore, matrine OD prepared using 8% VO/03 could be used for ultra-low-volume sprays and aerial applications. In this study, we provide a theoretical basis and technical guidance to develop pesticide formulations for aerial applications.
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Affiliation(s)
- Meng Li
- Key Laboratory of Biological Pesticide Creation and Resource Utilization Autonomous Region Colleges and Universities, College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010020, China; (M.L.); (Z.W.); (H.M.); (D.W.)
| | - Zhen Wang
- Key Laboratory of Biological Pesticide Creation and Resource Utilization Autonomous Region Colleges and Universities, College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010020, China; (M.L.); (Z.W.); (H.M.); (D.W.)
| | - Huanwen Meng
- Key Laboratory of Biological Pesticide Creation and Resource Utilization Autonomous Region Colleges and Universities, College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010020, China; (M.L.); (Z.W.); (H.M.); (D.W.)
| | - Dong Wang
- Key Laboratory of Biological Pesticide Creation and Resource Utilization Autonomous Region Colleges and Universities, College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010020, China; (M.L.); (Z.W.); (H.M.); (D.W.)
| | - Xile Deng
- State Key Laboratory of Hybird Rice, Key Laboratory for Biology and Control of Weeds, Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
| | - Hongyou Zhou
- Key Laboratory of Biological Pesticide Creation and Resource Utilization Autonomous Region Colleges and Universities, College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010020, China; (M.L.); (Z.W.); (H.M.); (D.W.)
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Wang P, Xu C, Li C, Wang L, Niu Q, Li H. Investigation of factors enhancing droplets spreading on leaves with burrs. FRONTIERS IN PLANT SCIENCE 2023; 14:1220878. [PMID: 37662168 PMCID: PMC10469947 DOI: 10.3389/fpls.2023.1220878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 07/18/2023] [Indexed: 09/05/2023]
Abstract
Introduction Spread effect is one of the aspects on deposition quality evaluation of pesticide droplets. It could be affected by many factors such as the microstructure of the target plant leaf surface, physical features of the droplets, and the concentration of spray additives. Methods In this study, using a high-speed photography system, 2.3% glyphosate ammonium salt solution with different concentration of the additive was applied to investigate the impact process of single droplet deposition on the plant leaf surface with burrs. Effect of droplet sizes and velocities on spreading area and dynamic deposition procedure was analyzed using image processing programs. Results The diffusion factor in the process of droplet spreading was changed over time. The occurrence of bubbles in the droplets was observed in the results. With the bubble generation, the droplet diameter expands and a better diffusion effect is obtained. As a result, better spreading effect was obtained as the droplet diameter was expanded with the generation of bubbles. The significant effects of each physical property of droplets on droplet spreading and the interaction effects between the influencing factors were analyzed. A significant correlation was found between additive concentration, droplet impact velocity, droplet diameters and droplet spreading area. All interactions of concentration:velocity, concentration:diameter, velocity:diameter, and concentration:velocity:diameter had a significant effect on the spreading area of droplets. The study of the factors influencing the process of pesticide droplet impact on the leaf surface contributes to the efficient use of pesticides. Thus, the consumption of pesticides and the resulting impact on the environment can be reduced.
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Affiliation(s)
- Pei Wang
- College of Engineering and Technology, Key Laboratory of Agricultural Equipment for Hilly and Mountain Areas, Southwest University, Chongqing, China
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing, China
| | - Chengrui Xu
- College of Engineering and Technology, Key Laboratory of Agricultural Equipment for Hilly and Mountain Areas, Southwest University, Chongqing, China
| | - Chengsong Li
- College of Engineering and Technology, Key Laboratory of Agricultural Equipment for Hilly and Mountain Areas, Southwest University, Chongqing, China
- National Citrus Engineering Research Center, Chinese Academy of Agricultural Sciences & Southwest University, Chongqing, China
| | - Lihong Wang
- College of Engineering and Technology, Key Laboratory of Agricultural Equipment for Hilly and Mountain Areas, Southwest University, Chongqing, China
| | - Qi Niu
- College of Engineering and Technology, Key Laboratory of Agricultural Equipment for Hilly and Mountain Areas, Southwest University, Chongqing, China
| | - Hui Li
- College of Engineering and Technology, Key Laboratory of Agricultural Equipment for Hilly and Mountain Areas, Southwest University, Chongqing, China
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Ma E, Fu Z, Chen K, Sun L, Zhang Y, Liu Z, Li L, Guo X. Smart Protein-Based Fluorescent Nanoparticles Prepared by a Continuous Nanoprecipitation Method for Pesticides' Precise Delivery and Tracing. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37221148 DOI: 10.1021/acs.jafc.3c01267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
It is highly desirable to develop smart and green pesticide nanoformulations for improving pesticide targeting and reducing their inherent toxicity. Herein, we demonstrate a continuous nanoprecipitation method to construct a novel type of enzyme-responsive fluorescent nanopesticides (denoted as ABM@BSA-FITC/GA NPs) based on abamectin, fluorescein isothiocyanate isomer (FITC)-modified protein, and food-grade gum arabic. The as-prepared ABM@BSA-FITC/GA NPs exhibit good water dispersibility, excellent storage stability, and enhanced wettability compared to commercial formulations. The controlled release of pesticides can be achieved through protein degradation caused by trypsin. Most importantly, the deposition, distribution, and transport of the ABM@BSA-FITC/GA NPs are precisely tracked on target plants (cabbage and cucumber) by fluorescence. Furthermore, the ABM@BSA-FITC/GA NPs show the high control efficacy against Plutella xylostella L., which is comparable with commercial emulsifiable concentrate formulation. In consideration of its eco-friendly composition and absence of organic solvent, this pesticide nanoformulation has promising potential in sustainable plant protection.
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Affiliation(s)
- Enguang Ma
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, 832000 Xinjiang, P.R. China
| | - Zhinan Fu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 200237 Shanghai, P.R. China
| | - Kai Chen
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, 832000 Xinjiang, P.R. China
| | - Liang Sun
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, 832000 Xinjiang, P.R. China
| | - Yuhua Zhang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 200237 Shanghai, P.R. China
| | - Zhiyong Liu
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, 832000 Xinjiang, P.R. China
| | - Li Li
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 200237 Shanghai, P.R. China
| | - Xuhong Guo
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, 832000 Xinjiang, P.R. China
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 200237 Shanghai, P.R. China
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Wang CY, Liu YQ, Jia C, Zhang MZ, Song CL, Xu C, Hao R, Qin JC, Yang YW. An integrated supramolecular fungicide nanoplatform based on pH-sensitive metal–organic frameworks. CHINESE CHEM LETT 2023. [DOI: 10.1016/j.cclet.2023.108400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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7
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Hou R, Zhou J, Song Z, Zhang N, Huang S, Kaziem AE, Zhao C, Zhang Z. pH-responsive λ-cyhalothrin nanopesticides for effective pest control and reduced toxicity to Harmonia axyridis. Carbohydr Polym 2023; 302:120373. [PMID: 36604051 DOI: 10.1016/j.carbpol.2022.120373] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 10/31/2022] [Accepted: 11/16/2022] [Indexed: 11/22/2022]
Abstract
In this study, pH-responsive LC@O-CMCS/PU nanoparticles were prepared by encapsulating λ-cyhalothrin (LC) with O-carboxymethyl chitosan (O-CMCS) to form LC/O-CMCS and then covering it with polyurethane (PU). Characterization and performance test results demonstrate that LC@O-CMCS/PU had good alkaline release properties and pesticide loading performance. Compared to commercial formulations containing large amounts of emulsifiers (e.g., emulsifiable concentrate, EC), LC@O-CMCS/PU showed better leaf-surface adhesion. On the dried pesticide-applied surfaces, the acute contact toxicity of LC@O-CMCS/PU to Harmonia axyridis (H. axyridis) was nearly 20 times lower than that of LC EC. Due to the slow-releasing property of LC@O-CMCS/PU, only 16.38 % of LC was released at 48 h in dew and effectively reduced the toxicity of dew. On the pesticide-applied leaves with dew, exposure to the LC (EC) caused 86.66 % mortality of H. axyridis larvae significantly higher than the LC@O-CMCS/PU, which was only 16.66 % lethality. Additionally, quantitative analysis demonstrated 11.33 mg/kg of λ-cyhalothrin in the dew on LC@O-CMCS/PU lower than LC (EC) with 4.54 mg/kg. In summary, LC@O-CMCS/PU effectively improves the safety of λ-cyhalothrin to H. axyridis and has great potential to be used in pest control combining natural enemies and chemical pesticides.
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Key Words
- H. axyridis
- Low toxicity
- PubChem CID: 14030006, castor oil
- PubChem CID: 14798, sodium hydroxide
- PubChem CID: 16682738, dibutyltin dilaurate
- PubChem CID: 169132, isophorone diisocyanate
- PubChem CID: 300, chloroacetic acid
- PubChem CID: 3776, isopropyl alcohol
- PubChem CID: 442424, genipin
- PubChem CID: 443046, λ-cyhalothrin
- PubChem CID: 6569, methyl ethyl ketone
- PubChem CID: 7767, N-methyl diethanolamine
- pH-controlled release
- λ-Cyhalothrin
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Affiliation(s)
- Ruiquan Hou
- Guangdong Biological Pesticide Engineering Technology Research Center, South China Agricultural University, Guangzhou 510642, China
| | - Jingtong Zhou
- Guangdong Biological Pesticide Engineering Technology Research Center, South China Agricultural University, Guangzhou 510642, China
| | - Zixia Song
- Guangdong Biological Pesticide Engineering Technology Research Center, South China Agricultural University, Guangzhou 510642, China
| | - Ning Zhang
- Guangdong Biological Pesticide Engineering Technology Research Center, South China Agricultural University, Guangzhou 510642, China
| | - Suqing Huang
- College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Amir E Kaziem
- Department of Environmental Agricultural Sciences, Institute of Environmental Studies and Research, Ain Shams University, Cairo 11566, Egypt
| | - Chen Zhao
- Guangdong Biological Pesticide Engineering Technology Research Center, South China Agricultural University, Guangzhou 510642, China.
| | - Zhixiang Zhang
- Guangdong Biological Pesticide Engineering Technology Research Center, South China Agricultural University, Guangzhou 510642, China.
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Karpov SV, Dzhalmukhanova AS, Kurbatov VG, Perepelitsina EO, Tarasov AE, Badamshina ER. Synthesis and Study of Properties of Waterborne Polyurethanes Based on β-Cyclodextrin Partial Nitrate as Potential Systems for Delivery of Bioactive Compounds. Polymers (Basel) 2022; 14:polym14235262. [PMID: 36501656 PMCID: PMC9735566 DOI: 10.3390/polym14235262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/28/2022] [Accepted: 11/29/2022] [Indexed: 12/05/2022] Open
Abstract
Eco-friendly waterborne polyurethanes (WPU) find wide application in agriculture as pesticide carriers, which enhances their efficiency. To provide better control of the retention time and capacity of pesticides, WPU can be modified by cyclodextrin derivatives able to form supramolecular assemblies with bioactive substances. Synthesis of WPU containing up to 15 wt.% of covalently bound β-cyclodextrin partial nitrate (CDPN) is reported in this work. Covalent bonding of CDPN to a polyurethane matrix has been proved by IR spectroscopy and size exclusion chromatography. The particle size and viscosity of the WPU dispersion have been determined. The introduction of CDPN affects molecular weight and thermal properties of WPU films. The presence of CDPN in WPU is shown to provide higher average molecular weight, wider molecular weight distribution, and larger average size of dispersed particles, compared with WPU reference samples containing 1,4-butanediol. The analysis of the rheological behavior of the obtained WPU dispersions shows that they can be classified as pseudoplastic liquids. The analysis of the thermal parameters of WPU films indicates that the introduction of 15.0 wt.% CDPN shifts the value of the glass transition temperature from -63 °C to -48 °C compared with reference samples. We believe that the results of the present study are sufficiently encouraging in terms of using CDPN-modified eco-friendly WPU as potential systems for developing the delivering agents of bioactive compounds. The application of such systems will allow the long-term contact of pesticides with the plant surface and minimize the possibility of their release into the environment.
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Affiliation(s)
- Sergei V. Karpov
- Department of Polymers and Composite Materials, Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Academician Semenov Avenue 1, Chernogolovka 142432, Russia
- Correspondence:
| | - Aigul S. Dzhalmukhanova
- Department of Polymers and Composite Materials, Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Academician Semenov Avenue 1, Chernogolovka 142432, Russia
| | - Vladimir G. Kurbatov
- Department of Polymers and Composite Materials, Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Academician Semenov Avenue 1, Chernogolovka 142432, Russia
- Department of Chemical Technology of Organic Coatings, Yaroslavl State Technical University, Moscow Avenue 88, Yaroslavl 150023, Russia
| | - Eugenia O. Perepelitsina
- Department of Polymers and Composite Materials, Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Academician Semenov Avenue 1, Chernogolovka 142432, Russia
| | - Alexander E. Tarasov
- Department of Polymers and Composite Materials, Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Academician Semenov Avenue 1, Chernogolovka 142432, Russia
| | - Elmira R. Badamshina
- Department of Polymers and Composite Materials, Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Academician Semenov Avenue 1, Chernogolovka 142432, Russia
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Promoting the utilization efficiency of agrochemicals via short-chain nonionic fluorinated synergist: Strategies and working mechanisms. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Kala S, Jawle CKD, Sogan N, Agarwal A, Kant K, Mishra BK, Kumar J. Analogous foliar uptake and leaf-to-root translocation of micelle nanoparticles in two dicot plants of diverse families. NANOIMPACT 2022; 28:100431. [PMID: 36206944 DOI: 10.1016/j.impact.2022.100431] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 09/05/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
Bio-inspired nanoparticles, including metallic, micelles, and polymeric, have been explored as a novel tool in the quest for effective and safe agrochemicals. Although nanoparticles (NPs) are being rapidly investigated for their usefulness in agricultural production and protection, little is known about the behaviour and interaction of oil-in-water micelle nanoparticles or nano-micelles (NM) with plants. We loaded a bio-based resin inherent of tree from the Pinaceae family as active material and produced stable nano-micelles using a natural emulsifier system. Here, we show that foliar-applied nano-micelle can translocate in two dicot plants belonging to diverse families (Coriandrum sativum -Apiaceae and Trigonella foenumgraecum -Fabaceae) via similar mode. Fluorescent-tagged NM (average diameter 11.20nm) showed strong signals and higher intensities as revealed by confocal imaging and exhibited significant adhesion in leaf compared to control. The NM subsequently translocates to other parts of the plants. As observed by SEM, the leaf surface anatomies revealed higher stomata densities and uptake of NM by guard cells; furthermore, larger extracellular spaces in mesophyll cells indicate a possible route of NM translocation. In addition, NM demonstrated improved wetting-spreading as illustrated by contact angle measurement. In a field bioassay, a single spray application of NM offered protection from aphid infestation for at least 9 days. There were no signs of phytotoxicity in plants post-application of NM. We conclude that pine resin-based nano-micelle provides an efficient, safe, and sustainable alternative for agricultural applications.
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Affiliation(s)
- Smriti Kala
- Formulation Division, Institute of Pesticide Formulation Technology (IPFT), Gurugram 122016, Haryana, India.
| | - Chetan K D Jawle
- Formulation Division, Institute of Pesticide Formulation Technology (IPFT), Gurugram 122016, Haryana, India
| | - Nisha Sogan
- Deapartment of Botany, Deshbandhu College, University of Delhi, Kalkaji, New Delhi 110019, India
| | - Amrish Agarwal
- Formulation Division, Institute of Pesticide Formulation Technology (IPFT), Gurugram 122016, Haryana, India
| | - Krishna Kant
- National Research Center for Seed Spice Research, Ajmer 305206, India
| | - B K Mishra
- National Research Center for Seed Spice Research, Ajmer 305206, India
| | - Jitendra Kumar
- Formulation Division, Institute of Pesticide Formulation Technology (IPFT), Gurugram 122016, Haryana, India
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11
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Shi L, Yan W, Sun L, Hou C, Wei N, Chen Z, Feng J. Preparation and characterization of emamectin benzoate nanocapsules based on the dual role of polydopamine. PEST MANAGEMENT SCIENCE 2022; 78:4407-4416. [PMID: 35767285 DOI: 10.1002/ps.7061] [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] [Received: 03/11/2022] [Revised: 06/17/2022] [Accepted: 06/29/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Developing pesticide-controlled release formulations with foliage adhesion has become the focus of current research in the field of crop protection. In this study, an excellent adhesive nanocapsule loaded with emamectin benzoate (Eb@PDA) was prepared via emulsion interfacial polymerization based on the self-polymerization ability and adhesion properties of polydopamine (PDA). RESULTS The physicochemical properties of the Eb@PDA were characterized by scanning electron microscopy, transmission electron microscopy, particle size statistics, Fourier transform infrared spectroscopy and X-ray diffraction. The Eb@PDA presented a regular spherical shape, with an average particle size of 163.8 nm. Compared with conventional formulations, it had higher pesticide-loading content (34%) and excellent adhesion onto corn leaf. In addition, Eb@PDA showed sustained-release characteristics, facilitating the release of Eb at low pH and high temperature. Eb@PDA could effectively protect Eb against photodegradation and had a longer effective period for controlling Spodoptera frugiperda and Spodoptera exigua. Furthermore, acute toxicity tests showed that the 50% lethal concentration (LC50 ) was 80.91 and 57.91 mg kg-1 at 7 and 14 days, respectively, indicating a lower toxicity of the Eb@PDA to earthworms. The cells (L02) treated with Eb@PDA showed a higher cell viability but a lower apoptosis rate (only 5.75%), demonstrating the lower cytotoxicity of the Eb@PDA. CONCLUSION The self-prepared Eb@PDA could be used as a formulation with the advantages of slow release, UV shielding, strong leaf adhesion, superior insecticidal properties, sustained effectiveness and biosafety. It will also facilitate the development of an efficient and safe pesticide delivery system. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Liyin Shi
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Weiyao Yan
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Li Sun
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Chaoqun Hou
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Nuo Wei
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Zhiyang Chen
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Jianguo Feng
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
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12
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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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13
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Su H, Liu Y, Gao Y, Fu C, Li C, Qin R, Liang L, Yang P. Amyloid-Like Protein Aggregation Toward Pesticide Reduction. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2105106. [PMID: 35257513 PMCID: PMC9069373 DOI: 10.1002/advs.202105106] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/24/2022] [Indexed: 05/19/2023]
Abstract
Pesticide overuse is a major global problem and the cause of this problem is noticeable pesticide loss from undesired bouncing of sprayed pesticide droplets and rain erosion. This further becomes a primary source of soil and groundwater pollution. Herein, the authors report a method that can enhance pesticide droplet deposition and adhesion on superhydrophobic plant leave surfaces by amyloid-like aggregation of bovine serum albumin (BSA). Through the reduction of the disulfide bond of BSA by tris(2-carboxyethyl) phosphine hydrochloride (TCEP), the amyloid-like phase transition of BSA is triggered that rapidly affords abundant phase-transitioned BSA (PTB) oligomers to facilitate the invasion of the PTB droplet into the nanostructures on a leaf surface. Such easy penetration is further followed by a robust amyloid-mediated interfacial adhesion of PTB on leaf surface. As a result, after mixing with pesticides, the PTB system exhibits a remarkable pesticide adhesion capacity that is more than 10 times higher than conventional fixation of commercial pesticides. The practical farmland experiments show that the use of PTB aggregation could reduce the use of pesticides by 70-90% while ensuring yield. This work demonstrates that current pesticide dosage in actual agriculture production may be largely reduced by utilizing eco-friendly amyloid-like protein aggregation.
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Affiliation(s)
- Hao Su
- Key Laboratory of Applied Surface and Colloid ChemistryMinistry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi'an710119China
| | - Yongchun Liu
- Key Laboratory of Applied Surface and Colloid ChemistryMinistry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi'an710119China
| | - Yingtao Gao
- Key Laboratory of Applied Surface and Colloid ChemistryMinistry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi'an710119China
| | - Chengyu Fu
- Key Laboratory of Applied Surface and Colloid ChemistryMinistry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi'an710119China
| | - Chen Li
- School of Chemistry and Chemical EngineeringHenan Institute of Science and TechnologyEastern HuaLan AvenueXinxiangHenan453003China
| | - Rongrong Qin
- Key Laboratory of Applied Surface and Colloid ChemistryMinistry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi'an710119China
| | - Lei Liang
- School of Chemistry and Chemical EngineeringHenan Institute of Science and TechnologyEastern HuaLan AvenueXinxiangHenan453003China
| | - Peng Yang
- Key Laboratory of Applied Surface and Colloid ChemistryMinistry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi'an710119China
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14
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15
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Wang D, Wang Y, He C, Li J, Omoniyi AO, Lu S, Li X, Zhang J, Sun J, Su Z. Demonstration of temperature-sensitive paints with rigorously controlled thickness applied to variously shaped metal substrates with a highly stable connection based on a demulsification-induced fast solidification strategy. NEW J CHEM 2022. [DOI: 10.1039/d1nj06054f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Temperature-sensitive paints with rigorously controlled thickness are in situ fabricated on metal surfaces based on the demulsification-induced fast solidification method.
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Affiliation(s)
- Dan Wang
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, People's Republic of China
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, People's Republic of China
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, People's Republic of China
| | - Yaokai Wang
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, People's Republic of China
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, People's Republic of China
| | - Caicai He
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, People's Republic of China
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, People's Republic of China
| | - Jiangyan Li
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, People's Republic of China
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, People's Republic of China
| | - Ahmed Olalekan Omoniyi
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, People's Republic of China
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, People's Republic of China
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, People's Republic of China
| | - Siyu Lu
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, People's Republic of China
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, People's Republic of China
| | - Xiao Li
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, People's Republic of China
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, People's Republic of China
| | - Jianfu Zhang
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, People's Republic of China
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, People's Republic of China
| | - Jing Sun
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, People's Republic of China
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, People's Republic of China
| | - Zhongmin Su
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, People's Republic of China
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, People's Republic of China
- Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, People's Republic of China
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Singh G, Ramadass K, Sooriyakumar P, Hettithanthri O, Vithange M, Bolan N, Tavakkoli E, Van Zwieten L, Vinu A. Nanoporous materials for pesticide formulation and delivery in the agricultural sector. J Control Release 2022; 343:187-206. [DOI: 10.1016/j.jconrel.2022.01.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/20/2022] [Accepted: 01/21/2022] [Indexed: 12/25/2022]
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17
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Qin Y, Lu X, Que H, Wang D, He T, Liang D, Liu X, Chen J, Ding C, Xiu P, Xu C, Gu X. Preparation and Characterization of Pendimethalin Microcapsules Based on Microfluidic Technology. ACS OMEGA 2021; 6:34160-34172. [PMID: 34926964 PMCID: PMC8675169 DOI: 10.1021/acsomega.1c05903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 11/26/2021] [Indexed: 06/14/2023]
Abstract
Microencapsulation of pesticides is a promising attempt to reduce environmental pollution and prevent the active ingredients from the interference of external factors. In this paper, pendimethalin microcapsules were prepared by the interfacial polymerization of 4,4-methylenediphenyl diisocyanate (MDI) and ethylenediamine (EDA) based on microfluidic technology. Effects of the microchannel structure, reaction temperature, surfactant type, and fluid flow rates were investigated and evaluated. The results showed that pendimethalin microcapsules prepared under suitable conditions had a smooth surface, good monodispersity, a high encapsulation efficiency (96.7%), and excellent thermal stability. The size and morphology control of microcapsules were realized by adjusting the flow rates of the continuous phase and the hydrophilic monomer EDA aqueous solution. The release of pendimethalin had a sustained release characteristic that was closely related to the morphology of microcapsules. Compared with the pendimethalin emulsifiable concentrate, pendimethalin microcapsules exhibited outstanding herbicidal activity in the weed control experiments. Therefore, pendimethalin microcapsules with tunable properties were successfully obtained from the microfluidic device and showed great potential in agricultural applications.
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18
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Li Z, Li Z, Gao Y, Zhang C, Zhao K, Guo Y, Bao Z, Wu T, Li X, Du F. Assemblies disaggregation and diffusion dictated droplet impact and wetting behaviors on hydrophobic surface. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116826] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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19
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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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20
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Zheng L, Cao C, Chen Z, Cao L, Huang Q, Song B. Efficient pesticide formulation and regulation mechanism for improving the deposition of droplets on the leaves of rice (Oryza sativa L.). PEST MANAGEMENT SCIENCE 2021; 77:3198-3207. [PMID: 33682990 DOI: 10.1002/ps.6358] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 02/07/2021] [Accepted: 03/08/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND The effective deposition of pesticide droplets on the target leaf surface is critical for improving the utilization of pesticides. We proposed a new way to enhance the droplet deposition on the target leaf surface by changing the properties of pesticide formulation, and this formulation can be sprayed directly or at a low dilution. In addition, it is a simple method to select a suitable concentration and formulation by evaluating the interfacial dilational rheological properties of pesticide droplets. RESULTS The wetting behavior of two types of pesticide formulations prepared by oil-based solvent on the rice leaf surface was investigated based on the surface free energy, surface tension, contact angle, adhesion tension, and adhesion work. The interfacial dilational rheological properties of different pesticide solutions were measured as a function of concentration. This study clearly demonstrates the fact that water-in-oil emulsion has a better wettability than oil-in-water emulsion, especially with the increase of the concentration of the solution, the droplets can be wetted and spread faster on the leaves. Compared with vegetable oil (methyl oleate), mineral oil (solvent oil No. 200) has smaller dilational modulus and surface tension, showing excellent wetting properties. CONCLUSION The water-in-oil emulsion prepared with solvent oil No. 200 has the smallest dilational modulus, and the spray droplets spread rapidly to the maximum wetting area on the rice leaves, which can be used in an ultra-low volume spray. The results provide new insights into how to increase the deposition of droplets on superhydrophobic leaf surfaces by screening formulations and concentrations. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Li Zheng
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Guiyang, China
| | - Chong Cao
- Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zhuo Chen
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Guiyang, China
| | - Lidong Cao
- Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Qiliang Huang
- Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Baoan Song
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals, Guizhou University, Guiyang, China
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21
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Zhou X, Zhang X, Mengyuan P, He X, Zhang C. Bio-based polyurethane aqueous dispersions. PHYSICAL SCIENCES REVIEWS 2021. [DOI: 10.1515/psr-2020-0075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
With the advances of green chemistry and nanoscience, the synthesis of green, homogenous bio-based waterborne polyurethane (WPU) dispersions with high performance have gained great attention. The presented chapter deals with the recent synthesis of waterborne polyurethane with the biomass, especially the vegetable oils including castor oil, soybean oil, sunflower oil, linseed oil, jatropha oil, and palm oil, etc. Meanwhile, the other biomasses, such as cellulose, starch, lignin, chitosan, etc., have also been illustrated with the significant application in preparing polyurethane dispersions. The idea was to highlight the main vegetable oil-based polyols, and the isocyanate, diols as chain extenders, which have supplied a class of raw materials in WPU. The conversion of biomasses into active chemical agents, which can be used in synthesis of WPU, has been discussed in detail. The main mechanisms and methods are also presented. It is suggested that the epoxide ring opening method is still the main route to transform vegetable oils to polyols. Furthermore, the nonisocyanate WPU may be one of the main trends for development of WPU using biomasses, especially the abundant vegetable oils.
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Affiliation(s)
- Xing Zhou
- Faculty of Printing, Packaging Engineering and Digital Media Technology , Xi’an University of Technology , Xi’an 710048 , P. R. China
- School of Materials Science and Engineering , Xi’an University of Technology , Xi’an 710048 , P. R. China
| | - Xin Zhang
- Faculty of Printing, Packaging Engineering and Digital Media Technology , Xi’an University of Technology , Xi’an 710048 , P. R. China
| | - Pu Mengyuan
- Faculty of Printing, Packaging Engineering and Digital Media Technology , Xi’an University of Technology , Xi’an 710048 , P. R. China
| | - Xinyu He
- Faculty of Printing, Packaging Engineering and Digital Media Technology , Xi’an University of Technology , Xi’an 710048 , P. R. China
| | - Chaoqun Zhang
- College of Materials and Energy , South China Agricultural University , Guangzhou 510642 , P. R. China
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22
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Klafke GM, Thomas DB, Miller RJ, Pérez de León AA. Efficacy of a water-based botanical acaricide formulation applied in portable spray box against the southern cattle tick, Rhipicephalus (Boophilus) microplus (Acari: Ixodidae), infesting cattle. Ticks Tick Borne Dis 2021; 12:101721. [PMID: 33848798 DOI: 10.1016/j.ttbdis.2021.101721] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 03/22/2021] [Accepted: 03/22/2021] [Indexed: 11/26/2022]
Abstract
Ectoparasitism result in annual losses to livestock producers estimated to reach billions of dollars in tropical and subtropical parts of the world where the southern cattle tick, Rhipicephalus (Boophilus) microplus, is established because this invasive pest is also a vector of pathogens causing bovine babesiosis and anaplasmosis. Reintroduction of R. microplus could be economically devastating for the cattle industry in the United States. Novel technologies are necessary to manage populations of R. microplus that are resistant to multiple classes of synthetic chemicals widely used as acaricides to control ticks infesting livestock, and to mitigate the environmental impact of these synthetic acaricides. Bioassays with a water-based formulation of a commercially available botanical acaricide (Essentria® IC3) at 6.25 % against a laboratory strain of R. microplus was 100 % lethal against unfed larvae, and 94 % mortality was recorded against engorged female ticks. These results prompted documentation of efficacy on infested cattle using an acaricide delivery system mimicking field conditions, which is required to consider the use of a product by integrated tick management programs. Twelve tick naïve cattle were artificially infested with unfed larvae on days -19, -12 and -5. On day -2, ticks from the left-side of the body of each animal were manually counted. Depending on pre-treatment tick counts the animals were assigned into three separate treatment groups: i) water (untreated control); ii) coumaphos 0.3 % in water (positive control); and iii) botanical acaricide 6.25 % in water. Five days after the last infestation, cattle were doused in a spray box and moved to individual stalls to collect tick data for calculation of treatment efficacy. The percentage control, based on the reproduction of surviving engorged female ticks after treatment with the 6.25 % Essentria in water-based spray was 70 % against R. microplus. Coumaphos treatment had a mean percent control of 100 %. Whereas this application of Essentria® IC3 cannot be recommended as a stand-alone method to eradicate R. microplus, the 6.25 % botanical acaricide water-based spray could be part of integrated tick management to control populations of R. microplus resistant to organophosphates like coumaphos and other classes of commercially available synthetic acaricides.
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Affiliation(s)
- Guilherme M Klafke
- USDA-ARS Cattle Fever Tick Research Laboratory, 22675 North Moorefield Rd., MAB 6419, Edinburg, TX, 78541, United States.
| | - Donald B Thomas
- USDA-ARS Cattle Fever Tick Research Laboratory, 22675 North Moorefield Rd., MAB 6419, Edinburg, TX, 78541, United States
| | - Robert J Miller
- USDA-ARS Cattle Fever Tick Research Laboratory, 22675 North Moorefield Rd., MAB 6419, Edinburg, TX, 78541, United States; USDA-ARS - Office of National Programs, 5601 Sunnyside Avenue, GWCC, Beltsville, MD, 20705-5148, United States
| | - Adalberto A Pérez de León
- USDA-ARS, Knipling-Bushland U.S. Livestock Insects Research Laboratory, and Veterinary Pest Genomics Center, 2700 Fredericksburg Rd, Kerrville, TX, 78028, United States
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23
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Xiao L, Ni W, Zhao X, Guo Y, Li X, Wang F, Luo G, Zhan R, Xu X. A moisture balanced antibacterial dressing loaded with lysozyme possesses antibacterial activity and promotes wound healing. SOFT MATTER 2021; 17:3162-3173. [PMID: 33620055 DOI: 10.1039/d0sm02245d] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Wound moisture management is very important in wound healing. Previous wound management has included dry healing and moist healing, and the theory of wound moisture balance is currently generally accepted. However, current studies have not reported which humidity is suitable for wound healing and how to appropriately use antibacterial compounds when the humidity is suitable. Our study explored the moisture balance of polyurethane foam dressings through a moisture balance test and constructed a safe and effective moisture balanced antibacterial dressing by loading lysozyme onto a polyurethane foam dressing. Wound healing experiments showed that the wound healing speed was the fastest when the humidity was 25%. In vivo and in vitro antibacterial experiments showed the superior antibacterial performance of the dressing after lysozyme loading. We loaded lysozyme on moisture balanced polyurethane dressings by means of dopamine adsorption, and the modified dressings were named PU/DA-LYS (polyurethane/dopamine-lysozyme). Experiments on wound healing in infected mice indicated that PU/DA-LYS helps fight infection while promoting wound healing. Cytotoxicity experiments and in vivo biological safety experiments indicated that PU/DA-LYS was safe for use. Our study found that the lysozyme loaded polyurethane dressing can provide appropriate wound moisture and prevent bacterial infection, which is a future developmental direction for wound dressings.
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Affiliation(s)
- Ling Xiao
- Department of Burn and Plastic Surgery, the First People's Hospital of Chenzhou, University of South China, Chenzhou 423000, China.
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