Application of a potentiometric sensor array as a technique in sensory analysis

Hruškar, Mirjana; Major, Nikola; Krpan, Marina

doi:10.1016/j.talanta.2009.12.015

Cited by 39 publications

(19 citation statements)

References 22 publications

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“…They found that their E-tongue device had good sensitivity (1–2 mg/kg) and could reproducibly differentiate between “Gluten-free” and “Gluten-containing” food samples. In an effort to standardize food and beverage profiling by an analytical technique, Hruškar et al 48 proposed utilizing a novel E-tongue to qualitatively assess probiotic fermented milk. They were able to successfully compare a sensory analysis with their E-tongue and found a high correlation with the results, indicating that the E-tongue could enhance the speed, cost, and accessibility of sensory analysis in the future.…”

Section: Potentiometric Sensorsmentioning

confidence: 99%

Electrochemical Sensors and Biosensors

et al. 2011

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By using a solid KCl melt in conjunction with an Ag/AgCl component, Vanau et al. 8 were able to fabricate an SSRE designed specifically for beverage industry applications. They found that this SSRE had a wide range of pH use, stable potentials, and small drift potentials (1 mV at room temperature over 3 months time). The reported stability and lifetime of this reference electrode make it particularly applicable for the food industry. In addition to food industry, engine diagnostics are utilizing SSRE to assess efficiency. Oxygen sensors have long been utilizing yttria-stabilized zirconia-based potentiometric components. Recently, Mn-based oxides have been studied to find a suitable SSRE to ensure accurate on-board diagnosis for engines. Miura et al. 9 found Mn 2 O 3 -sensing electrodes to function with excellent sensitivity and has great potential for miniaturization.Rius-Ruiz et al. 10 recently reported a carbon nanotube (CNT)-based SSRE. The most successful design tested utilized a photopolymerized n-butyl acrylate polymer in conjuction with SWCNTs, acting as the transducer layer. This type of transducer layer was often superior to alternative solid transducers, and the resulting SSRE proved insensitive to room lighting. The superior characteristics of this reference electrode as well as its ease of fabrication allow for potential widespread usage in a multitude of systems.Other Papers of Interest. To ensure reference electrodes keep up with current miniaturization trends, it has become challenging to find suitable materials for all potential applications. One such challenging arena is that of steel corrosion monitoring. Muralidharan et al. 11 developed a NiFe 2 O 4 reference electrode due to its superior fabrication cost and ease and its resistance to corrosion. The resulting electrode exhibited stability and low polarization currents in a calcium hydroxide solution, which is commonly used in concrete environments.Shibata et al. 12 examined the stability of an Ag/AgCl reference electrode with the novel salt bridge 1-methyl-3-octylimidazolium bis(trifluoromethanesulfonyl)-amide. This bridge was proposed and found to be superior in order to avoid the interference found using alternate ionic liquid salt bridges, such as KCl, while experimenting in phthalate buffer. Further evaluation of stability is necessary; however, the initial findings suggest this ionic liquid salt bridge is promising. Huang et al. 13 recently developed a working system using a Nafion strip membrane as an ion-conducting bridge, allowing for electrochemical measurements in pure water. By using this bridge, it is possible to avoid potential leaching contaminants and gain higher accuracy.Measuring the electrodeposition of boron melts is a challenge to researchers due to the unknown chemistry of KF-KCl-KBrF 4 . Pal et al. 14 fabricated an Ag/AgCl reference electrode that was found to be reversible and to have suitable stability and nonpolarizability. This will allow for the first available measurements of KF-KCl-KBrF 4 chemistry at high tempera...

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Section: Potentiometric Sensorsmentioning

confidence: 99%

Electrochemical Sensors and Biosensors

et al. 2011

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“…E-tongues have been applied to the food and beverage industries in many of the same functions as e-noses, such as for food-taste monitoring, classification, grading, quality assessments, and predictions of human taste-test results for commercial food and beverage products. Hruskar et al [128] utilized a potentiometric e-tongue, consisting of seven sensors and an Ag/AgCl reference electrode, to effectively monitor taste changes in probiotic fermented milk in storage, to classify probiotic fermented milk according to flavor, and to predict sensory characteristics and their relationship to the quality of the fermented milk as measured by human consumers.…”

Section: Roles Of Electronic-noses In Modern Agricultural Developmentmentioning

confidence: 99%

Diverse Applications of Electronic-Nose Technologies in Agriculture and Forestry

Wilson

2013

Sensors

296

182

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Electronic-nose (e-nose) instruments, derived from numerous types of aroma-sensor technologies, have been developed for a diversity of applications in the broad fields of agriculture and forestry. Recent advances in e-nose technologies within the plant sciences, including improvements in gas-sensor designs, innovations in data analysis and pattern-recognition algorithms, and progress in material science and systems integration methods, have led to significant benefits to both industries. Electronic noses have been used in a variety of commercial agricultural-related industries, including the agricultural sectors of agronomy, biochemical processing, botany, cell culture, plant cultivar selections, environmental monitoring, horticulture, pesticide detection, plant physiology and pathology. Applications in forestry include uses in chemotaxonomy, log tracking, wood and paper processing, forest management, forest health protection, and waste management. These aroma-detection applications have improved plant-based product attributes, quality, uniformity, and consistency in ways that have increased the efficiency and effectiveness of production and manufacturing processes. This paper provides a comprehensive review and summary of a broad range of electronic-nose technologies and applications, developed specifically for the agriculture and forestry industries over the past thirty years, which have offered solutions that have greatly improved worldwide agricultural and agroforestry production systems.

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“…(Rahaman y Kang, 2015;De Saja et al, 2006;Cetó et al, 2012;Ciosek y Wroblewski 2008;Hruskar et al, 2010;Elizabeth et al, 2011). En este sentido, se realizó un estudio preliminar para evaluar la estabilidad de las dos redes de sensores RS1 y RS2.…”

Section: Resultados Y Discusiónunclassified

Capacidad de Discriminación de Dos Redes de Sensores como Unidades Sensibles de una Mini-Lengua Electrónica sobre Muestras de Leche

2017

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ResumenEn este artículo se presentan los resultados de discriminación de dos redes de sensores. Una de estas redes de sensores se conformó por electrodos comerciales serigrafiados con materiales electroactivos y la otra red de sensores se elaboró a partir de electrodos modificados con polipirrol y diferentes dopantes. Se analizó la capacidad de discriminación y clasificación de diferentes tipos de muestras de leche comercial. Los resultados muestran que el uso de sensores modificados con polipirrol permite obtener respuestas más completas en información, clasificando correctamente las muestras de leche con propiedades fisicoquímicas y organolépticas diferentes mediante el uso de dos componentes principales que reprodujo el 67,6% de la información. Por otra parte, la red de sensores comerciales se evaluó sobre el mismo grupo de muestras e iguales condiciones, consiguiéndose el 56,5% de la variabilidad de información, mostrando así menos capacidad de discriminación de las muestras analizadas.Palabras clave: polipirrol; electrodos serigrafiados; sensores electroquímicos; leche; lengua electrónica. Ability of Discrimination of Two Sensor Networks as Sensitive Units of a Mini-Electronic Tongue on Milk Samples AbstractThis paper presents the development of two sensor networks as initial stage for the design of a prototype electronic tongue. One of these sensor networks was joined by commercial screen printed electrodes and the other sensor network was assembled from modified electrodes with pyrrole and different dopants. The capacity of discrimination and classification of different types of samples of commercial milk to two sensor networks was analyzed. The results show that the use of modified sensors with conductive polymers allows obtaining more complete information, classifying correctly samples of milk with different organoleptic and physico-chemical properties by the use of two main components that reproduced the 67,6% of information. On the contrary, the commercial sensor network evaluated on the same group of samples and equal conditions, obtaining 56,5% of the variability of information, showing in this way lower classifying capacity of the samples analyzed.

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Application of a potentiometric sensor array as a technique in sensory analysis

Cited by 39 publications

References 22 publications

Electrochemical Sensors and Biosensors

Electrochemical Sensors and Biosensors

Diverse Applications of Electronic-Nose Technologies in Agriculture and Forestry

Capacidad de Discriminación de Dos Redes de Sensores como Unidades Sensibles de una Mini-Lengua Electrónica sobre Muestras de Leche

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