Aspects concerning the use of biosensors for process control: experimental and simulation investigations

Ferreira, L.S.; Souza, Maurício B. de; Trierweiler, Jorge O.; Broxtermann, Olaf; Folly, Rossana O. M.; Hitzmann, Bernd

doi:10.1016/s0098-1354(03)00044-9

Cited by 34 publications

(21 citation statements)

References 17 publications

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“…It is highly useful in verifying that processes are under control. The high sensitivity of enzymatic biosensors allows for the detection of microorganisms such as Escherichia coli, Salmonella sp., Staphylococcus aureus, pesticides and herbicides, among others, in hours and/or minutes (Fitzpatrick et al, 2000;Killard and Smyth, 2000).Innovation and development in the food industry are guided by the central principles: food safety and quality (Mello and Kubota, 2002;Ferreira et al, 2003). The increasing complexity of the food chain requires, among other things, the development of effective traceability systems that guarantee the solidity of all the links.…”

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confidence: 99%

Biological Activity of Essential Oils from Leaves and Fruits of Pepper Tree (Schinus molle L.) to Control Rice Weevil (Sitophilus oryzae L.)

Benzi

Stefanazzi

Ferrero

2009

Chilean J. Agric. Res.

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Rice weevil (Sitophilus oryzae L.) is a primary insect pest of stored grain. The development of resistance resulted in the application of synthetic insecticides. In recent years many plant essential oils have provided potential alternatives to currently used insect control agents. The Brazilian pepper tree (Schinus molle L. var. areira (L.) DC.) (Anacardiaceae) ) (Anacardiaceae) has different biological properties such as insecticidal activity. In this study, repellent, fumigant activity, nutritional indices, and feeding deterrent action were evaluated on S. oryzae adults. Filter paper impregnation was used to test fumigant toxicity, whereas treated whole wheat was used to evaluate repellent activity and a flour disk bioassay was done to evaluate feeding deterrent action and nutritional index alteration. Leaf essential oils showed repellent effects at both concentrations (0.04 and 0.4% w/w), while fruit essential oils lacked repellent activity. Both plant oils altered nutritional indices. Fruit essential oils had a strong feeding deterrent action (62%) while leaves had a slight effect (40.6%). With respect to fumigant activity, neither of the essential oils was found to be toxic. Resistance and toxicity problems of the synthetic insecticides have resulted in the necessity of finding more effective and healthier alternatives. Thus, essential oils are the most tested products presently (Papachristos and Stamopoulus, 2002; Umoetok and Gerard, 2003; Zhang et al., 2004; Tapondjou et al., 2005; Ferrero et al., 2006; Sánchez Chopa et al., 2006, Stefanazzi et al., 2006, Wang et al., 2006. Different biological activities of plant derivatives have been demonstrated for the control of stored grain pests (Golob et al., 1999; Rajendran and Sriranjini, 2008).The Brazilian pepper tree (Schinus molle L. var. areira (L.) DC.) is associated with agricultural crops in boundaries, windbreaks, riverbank protection, and watershed conservation. In popular medicine, it is use for its astringent, diuretic, antispasmodic properties among others. In pest control, it is used as a fumigant, repellent, and ovicide (Ruffínengo et al., 2005; Ferrero et al., 2006).The objective of the present study was to evaluate the fumigant, repellent and/or attractant, feeding deterrent activity, and the alterations in the nutritional physiology produced by the essential oils from leaves and fruits of S. molle var. areira on 3-to 4-day-old S. oryzae adults. V. BENZI et al. -BIOLOGICAL ACTIVITY OF ESSENTIAL OILS… MATERIALS AND METHODS InsectsThe insects came from a susceptible colony maintained in the Cátedra de Zoología Agrícola de la Universidad Nacional de Buenos Aires (UBA). They were bred in glass containers, 8 cm in diameter, 13 cm high, sealed with fine netting, maintained at 28 ± 1 ºC, 60-70% HR, a 12:12 photoperiod, and using whole wheat grains as food. Vegetal materialThe vegetal organs (leaves and mature fruits) of the pepper tree were collected during the summer period in Bahía Blanca city, Buenos Aires, Argentina (38°41' S; 62°17' ...

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Biological Activity of Essential Oils from Leaves and Fruits of Pepper Tree (Schinus molle L.) to Control Rice Weevil (Sitophilus oryzae L.)

Benzi

Stefanazzi

Ferrero

2009

Chilean J. Agric. Res.

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“…Al comparar este intervalo de operación del biosensor desarrollado con los que se encuentran reportados en la literatura para biosensores similares, podemos darnos cuenta de que dichos intervalos de operación dependen tanto del sistema de transducción de la señal empleado como del diseño mismo del biosensor; es decir, de su configuración (Dorneles y Tatsuo 2002; Ricci et al, 2005;Njagi y Andreescu, 2007;Pemberton et al, 2009;Zhang et al, 2010). Desde el punto de vista operativo, es importante que los biosensores presenten un amplio intervalo de concentraciones de respuesta lineal, especialmente cuando se pretende que operen en procesos continuos, donde no es posible ajustar las concentraciones de los analitos dentro de los intervalos de respuesta lineal de dichos instrumentos (Rekha et al, 2000), pero en el caso de operar en procesos discontinuos o por lote, resulta irrelevante que tan amplio sea este intervalo de concentraciones de respuesta lineal del biosensor, puesto que aun así es necesario ajustar la concentración del analito en las muestras por analizar, a fin de que dicha concentración caiga dentro del intervalo de respuesta lineal del biosensor (Ferreira et al, 2003;Montañez et al, 2006).…”

Section: Efecto De La Concentración De Glucosaunclassified

“…La necesidad de contar con resultados analíticos precisos y confiables para la monitorización y el control de procesos químicos, ha originado el desarrollo de nuevos y sofisticados métodos de análisis que requieren de una costosa instrumentación, instalación y mantenimiento, lo que ha dado lugar a la aparición de una sub-disciplina de la química analítica que es, la química analítica de procesos, cuyo objetivo principal consiste en suministrar información cualitativa y cuantitativa de un determinado proceso químico en función del tiempo; información que además de permitir la monitorización y el control de los parámetros de calidad, también es útil para optimizar de manera eficiente y desde el punto de vista industrial, el consumo de energía y de materias primas, así como la duración del proceso y el aspecto final del producto terminado (Riebe, 1990;Ferreira et al, 2003).…”

Section: Introduccionunclassified

“…Desde entonces, el desarrollo de los biosensores se ha centralizado en el campo del diagnostico clínico debido a lo cual, el biosensor de glucosa ha sido el biosensor más desarrollado a nivel mundial (Wang, 2001, Newman y Turner, 2005Kissinger, 2005). Gracias al apoyo de los instrumentos de la biotecnología y a la investigación postgenómica, los biosensores actualmente suponen potentes herramientas de análisis que encuentran numerosas aplicaciones en la industria agroalimentaria medioambiental, químico, farmacéutico y militar (Rekha et al, 2000;Patel, 2002;Ferreira et al, 2003). En la industria agroalimentaria, las tres grandes áreas de aplicación de los biosensores son: seguridad alimentaria, calidad alimentaria y control de procesos (González et al, 2005).…”

Section: Introduccionunclassified

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Biosensor de Glucosa basado en un Biocompósito disperso de Grafito-Epoxi-Platino-Glucosa Oxidasa

Montañez¹,

Ramos

Alegret³

et al. 2011

Inf. tecnol.

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ResumenEl objetivo del trabajo consistió en desarrollar un biosensor de glucosa basado en las propiedades electroquímicas de un compósito grafito-epoxi-platino-glucosa oxidasa. La industria de alimentos y bebidas demanda métodos analíticos rápidos, precisos y confiables para evaluar y asegurar la calidad de sus productos y optimizar sus procesos. El desarrollo de biosensores enzimáticos amperométricos representa una opción viable que satisface estos requerimientos. El potencial de trabajo y la caracterización de la respuesta del biosensor desarrollado se determinaron por voltamperometría de barrido lineal y amperometría, respectivamente. La respuesta del biosensor fue máxima a 600 mV, su tiempo de respuesta fue de 20 segundos en un intervalo de concentración de respuesta lineal de 0.1 a 5 mM de glucosa y sensibilidad de 1.4 μA/mM. La estabilidad y vida útil del biosensor desarrollado dependen de la frecuencia de uso y el biocompósito actúa como reservorio de enzimas y de mediador electroquímico. Palabras clave: método analítico, biosensor, glucosa, platino, voltamperometría Glucose Biosensor based on a Graphite-EpoxyPlatimum-Glucose Oxidase dispersed Biocomposite AbstractThe aim of this work was to develop a glucose biosensor based on electrochemical properties of a graphite-epoxy-platinum-glucose oxidase composite. The food and beverage industry demand fast, precise and reliable analytical methods to evaluate and to assure the quality of its products and to optimize its processes. The development of amperometric enzyme biosensors represents a viable option that satisfies these requirements. The working potential and the characterization of the response of the biosensor were determined by cyclic voltammetry and amperometry, respectively. The biosensor response was maximum at 600 mV, with a response time of 20 seconds within the concentration range of linear response from 0.1 to 5 mM glucose and sensitivity of 1.4 μA/mM. The stability and lifetime of the proposed biosensor depend on the frequency of use, where the biocomposite acts as a reservoir of enzymes and electrochemical mediator.

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“…The understanding of the kinetic peculiarities of biosensors is of crucial importance for their design. The mathematical modeling is rather widely used to improve the efficiency of the biosensors design and to optimize their configuration [5][6][7][8]. Since 1970s, various mathematical models of biosensors have been developed and used successfully to study and optimize analytical characteristics of biosensors [9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Theoretical Analysis of an Amperometric Biosensor Based on Parallel Substrates Conversion

Praveen¹,

Rajendran²

2014

ISRN Electrochemistry

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The behaviour of an amperometric biosensor based on parallel substrates conversion for steady-state condition has been discussed. This analysis contains a nonlinear term related to enzyme kinetics. Simple and closed form of analytical expressions of concentrations and of biosensor current is derived. This model was originally reported by Vytautas Aseris and his team (2012). Concentrations of substrate and product are expressed in terms of single dimensionless parameter. A new approach to Homotopy perturbation method (HPM) is employed to solve the system of nonlinear reaction diffusion equations. Furthermore, in this work, the numerical solution of the problem is also reported using Matlab program. The analytical results are compared with the numerical results. The analytical result provided is reliable and efficient to understand the behavior of the system.

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Aspects concerning the use of biosensors for process control: experimental and simulation investigations

Cited by 34 publications

References 17 publications

Biological Activity of Essential Oils from Leaves and Fruits of Pepper Tree (Schinus molle L.) to Control Rice Weevil (Sitophilus oryzae L.)

Biological Activity of Essential Oils from Leaves and Fruits of Pepper Tree (Schinus molle L.) to Control Rice Weevil (Sitophilus oryzae L.)

Biosensor de Glucosa basado en un Biocompósito disperso de Grafito-Epoxi-Platino-Glucosa Oxidasa

Theoretical Analysis of an Amperometric Biosensor Based on Parallel Substrates Conversion

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