Nanopartículas de alginato como sistema de liberação para o herbicida clomazone

Silva, Mariana dos Santos; Cocenza, Daniela Sgarbi; Melo, Nathalie Ferreira Silva de; Grillo, Renato; Rosa, André Henrique; Fraceto, Leonardo Fernandes

doi:10.1590/s0100-40422010000900009

Cited by 39 publications

(37 citation statements)

References 17 publications

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“…In the case of medical applications, a (relatively) high production cost can be accepted, but for agricultural production that is not possible and nanomaterials should be produced in great amounts and for a very low price. Promising works in this direction are those dealing with natural polymers such as chitosan (Grillo et al, 2014;Maruyama et al, 2016) and alginate (Silva et al, 2010), and lipids (Pérez-de-Luque et al, 2012;Campos et al, 2015a;de Oliveira et al, 2015). This kind of polymers are easily synthesized and produced from natural existing compounds like chitin from crustaceans' exoskeleton (for chitosan) and from brown algae (for alginate) (for a review, see Campos et al, 2015b), and they can be obtained in high amounts with a low cost.…”

Section: But the Room Is Too Bigmentioning

confidence: 99%

Interaction of Nanomaterials with Plants: What Do We Need for Real Applications in Agriculture?

Pérez‐de‐Luque

2017

Front. Environ. Sci.

423

186

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The number of published researching works related with applications of nanomaterials in agriculture is increasing every year. Most of such works focus on the synthesis of nanodevices, their characteristics as nanocarriers for controlled release of active substances, and their interaction (either positive or negative) with plants or microorganisms under controlled conditions. Important knowledge has been gained about the uptake and distribution of nanomaterials in plants, although there are still gaps regarding internalization inside plant cells. Nanoparticle traits and plant species greatly affect the interaction, and nanodevices can enter and move through different pathways (apoplast vs. symplast), what influences their effectiveness and their final fate. Depending on the effect we are expecting for a nanocarrier, the application method might be critical. However, in order to get that research used in the field, some problems must be addressed. First, the cost for escalating the production of nanodevices must be affordable with the current production cost of agricultural goods. Second, we need to be sure that a technology is safe before spreading it into the environment. Third, consumers will distrust a technology unfamiliar for them in the same way that happened with transgenic crops. We need to broaden our horizons and start looking for real practical approaches, filling the main gaps that hamper our jump from laboratory research into field applications.

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Section: But the Room Is Too Bigmentioning

confidence: 99%

Interaction of Nanomaterials with Plants: What Do We Need for Real Applications in Agriculture?

Pérez‐de‐Luque

2017

Front. Environ. Sci.

423

186

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“…Encapsulated paraquat nanoformulations composed of chitosan and sodium tripolyphosphate, similarly as incorporation of paraquat [93] or clomazone to alginate/chitosan NPs [94] reduced environmental impact with simultaneous preservation of herbicidal effectiveness [95], and treatment with nanoparaquat resulted in less chromosome damage in Allium cepa [96]. Also encapsulated paraquate in the formulation of AgNPs in the chitosan matrix showed controlled-release properties and improved herbicidal activity against Eichhornia crassipes with 90% of release at 24 h without affecting soil macro and micronutrients, soil enzymes, soil microflora and seedling emergence and plant growth parameters of non-target plant Vigna mungo [97].…”

Section: Nanoformulations Used For Plant Protection and Their Biologimentioning

confidence: 99%

Application Of Nanotechnology In Agriculture And Food Industry, Its Prospects And Risks

Jampílek

Kráľová

2015

Ecological Chemistry and Engineering S

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Nanoagrochemicals, such as nanopesticides, nanofertilizers or plant growth stimulating nanosystems, were primarily designed to increase solubility, enhance bioavailability, targeted delivery, controlled release and/or protection against degradation resulting in the reduced amount of applied active ingredients and finally in a decrease of dose-dependent toxicity/burden. This paper is a comprehensive up-to-date review related to the preparation and the biological activity of nanoformulations enabling gradual release of active ingredient into weeds and the body of pests and controlled release of nutrients to plants. The attention is also devoted to the decrease of direct environmental burden and economic benefits due to application of nanoformulations, where less amount of active ingredient is needed to achieve the same biological effect in comparison with bulk. The application of nanotechnology in the areas such as food packaging, food security, encapsulation of nutrients and development of new functional products is analysed. The use of nanoparticles in biosensors for detection of pathogens and contaminants as well as in DNA and gene delivery is discussed as well. Benefits and health risks of nanoagrochemicals are highlighted, and special attention is given to nanoecotoxicology and guidelines and regulatory documents related to the use of nanoformulations in agriculture and food industry.

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“…A new direction, aimed at reducing the risk of the uncontrolled distribution of xenobiotics in the environment, is the development of a new generation of environmentally friendly herbicide formulations with a targeted and controlled release of the active ingredient owing to the use of specific coatings and/or carriers produced from biodegradable materials. Several examples of polymeric carrier usage have been described, including ethyl cellulose [3,4], polyurethane [5], sodium alginate [6,7] for delivery of a number of weed and pest killing chemicals.…”

Section: Introductionmentioning

confidence: 99%

Degradable Polyhydroxyalkanoates as Herbicide Carriers

et al. 2012

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The biodegradable polymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) has been used to design experimental sustained-release formulations of the herbicide Zellek Super in the form of films and microgranules. The kinetics of polymer degradation and the dynamics of herbicide release show that the rate and extent of herbicide release from the polymer matrix into the soil depends on the geometry of the carrier and the proportion of the pesticide loaded into it (polymer/pesticide mass ratio). Experiments with the creeping bentgrass (Agrostis stolonifera L.) show that the formulations of the herbicide Zellek Super constructed as microgranules and films can be successfully used to suppress the growth of grasses. This study is the first to demonstrate that biodegradable polyhydroxyalkanoates can be used effectively to construct environmentally friendly sustained-release PHA-herbicide systems that can be placed into the soil together with seeds.

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Nanopartículas de alginato como sistema de liberação para o herbicida clomazone

Cited by 39 publications

References 17 publications

Interaction of Nanomaterials with Plants: What Do We Need for Real Applications in Agriculture?

Interaction of Nanomaterials with Plants: What Do We Need for Real Applications in Agriculture?

Application Of Nanotechnology In Agriculture And Food Industry, Its Prospects And Risks

Degradable Polyhydroxyalkanoates as Herbicide Carriers

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