Gamma-polyglutamic Acid/chitosan Nanoparticles For The Plant Growth Regulator Gibberellic Acid: Characterization And Evaluation Of Biological Activity

dc.creatorPereira
dc.creatorA. E. S.; Sandoval-Herrera
dc.creatorI. E.; Zavala-Betancourt
dc.creatorS. A.; Oliveira
dc.creatorH. C.; Ledezma-Perez
dc.creatorA. S.; Romero
dc.creatorJ.; Fraceto
dc.creatorL. F.
dc.date2017
dc.datefev
dc.date2017-11-13T13:54:29Z
dc.date2017-11-13T13:54:29Z
dc.date.accessioned2018-03-29T06:07:53Z
dc.date.available2018-03-29T06:07:53Z
dc.identifierCarbohydrate Polymers. Elsevier Sci Ltd, v. 157, p. 1862 - 1873, 2017.
dc.identifier0144-8617
dc.identifier1879-1344
dc.identifierWOS:000391896800208
dc.identifier10.1016/j.carbpol.2016.11.073
dc.identifierhttp://www.sciencedirect.com/science/article/pii/S0144861716313479?via%3Dihub
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/329411
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1366436
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionThe growth regulator gibberellic acid (GA3) has several uses in the field, improving germination, plant development, productivity, and the quality of food. This work describes the development of a nanocarrier system for GA(3), based on the poly(gamma-glutamic acid) (gamma-PGA) and chitosan (CS) polymers, Nanoparticles without GA(3) (nano-gamma PGA/CS-GA(3)) showed colloidal characteristics, with an average size of 117 +/- 9 nm, PDI of 0.43 +/- 0.07, and zeta potential of -29 +/- 0.5 mV. The encapsulated nanoparticles (nano-gamma PGA/CS-GA(3)) presented an average size of 134 9 nm, PDI of 0.35 +/- 0.05, zeta potential of 27.9 +/- 0.5 mV, and 61% encapsulation. The images of nanoparticles observed by Transmission and scanning electron microscopy (TEM and SEM) showed a spherical shape of the nanoparticles. The system showed sustained release, with 58% release after 48 h. Evaluation of thermal properties using DSC and TGA analyses indicated that there was an interaction between the CS and gamma-PGA polymers. In tests using Phaseolus vulgaris seeds, nano-gamma PGA/CS-GA(3) showed high biological activity, enhancing the rate of germination in the first day (50-70%) when compared with free GA(3) (10-16%). Encapsulated GA(3) was also more efficient than the free hormone in the increase of leaf area and the induction of root development (including the formation of lateral roots). These effects were not observed when seeds were treated with nano-gamma PGA/CS without GA93. The results demonstrated the considerable potential of nano-gamma PGA/CS-GA93 for use in agriculture. (C) 2016 Elsevier Ltd. All rights reserved.
dc.description157
dc.description1862
dc.description1873
dc.descriptionBrazilian agency Sao Paulo Science Foundation - FAPESP [2013/12322-2, 2015/15617-9]
dc.descriptionBrazilian Fellow Agency - CNPq (Science without Borders Program) [200823/2014-0]
dc.descriptionLaboratorio Nacional de Materiales Grafenicos, (Mexican agency CONACyT) [250848]
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageEnglish
dc.publisherElsevier Sci LTD
dc.publisherOxford
dc.relationCarbohydrate Polymers
dc.rightsfechado
dc.sourceWOS
dc.subjectGamma-polyglutamic Acid
dc.subjectChitosan
dc.subjectNanoparticles
dc.subjectGibberellic Acid
dc.subjectAgriculture
dc.subjectRelease System
dc.titleGamma-polyglutamic Acid/chitosan Nanoparticles For The Plant Growth Regulator Gibberellic Acid: Characterization And Evaluation Of Biological Activity
dc.typeArtículos de revistas


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