Development of bacterial inoculums based on biodegradable hydrogels for agricultural applications.

Garcés, Viviana; Palencia, Manuel; C., Enrique Combatt

doi:10.34294/j.jsta.17.2.11

Cited by 22 publications

(6 citation statements)

References 14 publications

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“…Los dos procesos adicionales a temperaturas alrededor de los 321 y 441 °C, se asocian a procesos de descomposición de la matriz polimérica, deshidroxilación, rompimiento enlaces éster, etc., obteniéndose un residuo del 11 %. [18] Finalmente, la caracterización térmica de los CHs que poseen en su estructura bentonita-M, evidenciaron igualmente tres etapas de perdida de masa, una inicial a temperaturas alrededor de los 100 °C, asociadas a la deshidratación de los materiales, con pérdidas de alrededor de los 4 al 6 %. Las dos etapas posteriores, asociadas a procesos de degradación, inician alrededor de los 160 y 360 °C, siendo este último proceso de degradación solapado por la deshidroxilación interna de la bentonita.…”

Section: Resultados Y Discusiónunclassified

“…Como se puede observar, para todos los materiales evaluados se logro la reactivación de la Azotobacter chroococcum, pasando de una morfología cocoide a bacilar, como producto de las variaciones ambientales inducidas durante el proceso de generación de los inóculos. Lo anterior se explica debido a la capacidad de la Azotobacter chroococcum, de formar quistes, recubrimientos poliméricos de poli(b-hidroxibutirato), diversos polisacáridos, proteínas y lipolisacaridos; que protegen al microorganismo del calor, radicación, tratamiento ultrasónico y desecación del medio [18,24]. Por lo tanto, lo resultados sugieren que la Azotobacter chroococcum puede soportar el proceso de secado, que induce a su enquistamiento y permite su sobrevivencia al interior de los CHs.…”

Section: Resultados Y Discusiónunclassified

“…La preparación de los inóculos bacterianos se realizó mediante variaciones de la metodología publicada por Garcés y Palencia (2017) [18]. Para ello se realizó lo siguiente: 2.5.1 Incorporación de Azotobacter chroococcum a las matrices poliméricas: La incorporación de los microorganismos promotores de crecimiento vegetal se llevó a cabo mediante la inoculación de los CHs con una dispersión bacteriana de Azotobacter chroococcum.…”

Section: Preparación De Los Inóculos Bacterianosunclassified

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Soil-mimicking hybrid composites based on clay, polymers and nitrogen-fixing bacteria for the development of remediation systems of degraded soil.

Lerma¹,

s.a.s²,

Combatt³

et al. 2018

J. Sci. Technol. Appl.

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Compositos híbridos miméticos del suelo basados en arcilla, polímeros y bacterias fijadoras de nitrógeno para el desarrollo de sistemas de remediación de suelos degradados ResumenPalabras claves El deterioro constante del suelo como consecuencia de procesos naturales y antropogénicos provoca la pérdida de la fracción arcillosa y la materia orgánica humidificada, lo que conduce inevitablemente a la formación de suelos pobres en nutrientes con baja fertilidad y baja productividad agrícola. Se sugiere que una restauración eficiente y fácil de los suelos puede ser posible mediante la adición de materiales estructural y funcionalmente similares a las partículas del suelo. Por lo tanto, el objetivo de este trabajo fue desarrollar materiales que imitaran el suelo a partir de compuestos híbridos polímero-arcilla junto con bacterias fijadoras de nitrógeno para el desarrollo de sistemas de remediación de suelos degradados. Para esto, bentonita se modificó químicamente con triclorovinilsilano con el fin de producir núcleos de arcilla polimerizables. Posteriormente, mediante polimerizaciones secuenciales se generaron los Acondicionador polimérico del suelo Materia orgánica humificada Suelos degradados Azotobacter chroococcum Bentonita

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Section: Resultados Y Discusiónunclassified

Section: Preparación De Los Inóculos Bacterianosunclassified

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Soil-mimicking hybrid composites based on clay, polymers and nitrogen-fixing bacteria for the development of remediation systems of degraded soil.

Lerma¹,

s.a.s²,

Combatt³

et al. 2018

J. Sci. Technol. Appl.

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“…Starch has been chemically modified with dithiocarbamate, citric acid, sodium trimetaphosphate, and sodium hypochlorite for adsorbent applications, particularly heavy metal adsorption (Garces et al, 2017;Kim et al, 2024). In general, one of the aspects that makes amylopectin relevant is the fact that it is harmless (i.e., nontoxic), biocompatible, biodegradable, inexpensive, and its inherent condition as an edible material.…”

Section: Amylopectinmentioning

confidence: 99%

Biopolymers containing in cassava starch (Manihot esculenta): Amylose and amylopectin

Palencia,

García Quintero,

Combatt

2025

J. Sci. Technol. Appl.

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Starch is an important raw material for the chemical, pharmaceutical, and textile industries and many other materials. Mainly, into food industry has great relevance as an additive due to its functional properties both native and modified. In addition, it is considered the main energy storage carbohydrate for plants, but also, it is also a highly-hydrophilic polyhydroxylated biopolymer that can be used as a precursor for the making of a numerous material with low-cost, abundance, and availability. Starch is constituted of two biopolymers called amylose and amylopectin influencing its properties such as crystallinity, viscosity, retrogradation, gelation, and stickiness. These properties are essential to give this raw material an industrial use, but they are not determined in terms of its spectral of chemical modifications. Particularly, information related specifically to these biopolymers is dispersed and only these are usually described as parts of complete material. The aim of this review is to give an overview of starch, mainly, taking as executor of the content of its components. This review is of an introductory nature, and allows an overview of amylose and amylopectin, as well as their significance in the properties of starch. In this sense, the growing interest in polyhydroxylated biopolymers, particularly starch, is displayed throughout the document. The importance of delving into the study of starch as a biomaterial is concluded, but also the importance of identifying and characterizing new sources of starch obtained from wild species or resulting from genetic or adaptive modifications.

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“…However, from the experimental point of view, it appears nowadays that the addition of Si in itself may be insufficient to meet the requirements of relatively high power at high burnup [6]. In addition, theoretical results using BFS methods for alloys showed that the formation of efficient diffusion barriers is strongly dependent on the Mo concentration near the interface [7]. In fact, the analysis shows that Si diffuses deeply in the U-Mo bulk for low levels of Mo in areas close to the interface.…”

Section: Introductionmentioning

confidence: 99%

Structural instability and ground state of the U2Mo compound

Losada¹,

Garcés

2015

Journal of Nuclear Materials

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This work reports the structural instability at T=0 • K of the U 2 Mo compound in the structure C11 b under the distortion related to the C 66 elastic constant. The electronic properties of U 2 Mo such density of states (DOS), bands and Fermi surface (FS) are studied to understand the source of the instability. The C11 b structure can be interpreted as formed by parallel linear chains along the z-directions each one composed by successive U-Mo-U blocks. The hybridization due to electronic interactions inside the U-Mo-U blocks is slightly modified under the D 6 distortion. The change in distance among chains modifies the U-U interaction and produces the split of f-states. The distorted structure is stabilized by the energy lowering of the hybridized states, mainly between d-Mo and f-U states, together with the f-band split. Consequently, an induced Peierls distortion is produced in U 2 Mo due to the D 6 distortion. In addition, the results of this work remarks that the structure of the ground state of the U 2 Mo compound is other than the assumed C11 b structure.

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Development of bacterial inoculums based on biodegradable hydrogels for agricultural applications.

Cited by 22 publications

References 14 publications

Soil-mimicking hybrid composites based on clay, polymers and nitrogen-fixing bacteria for the development of remediation systems of degraded soil.

Soil-mimicking hybrid composites based on clay, polymers and nitrogen-fixing bacteria for the development of remediation systems of degraded soil.

Biopolymers containing in cassava starch (Manihot esculenta): Amylose and amylopectin

Structural instability and ground state of the U2Mo compound

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