Classification and adulteration control of vegetable oils based on microwave reflectometry analysis

Cataldo, Andrea; Piuzzi, Emanuele; Cannazza, Giuseppe; Benedetto, Egidio De

doi:10.1016/j.jfoodeng.2012.04.012

Cited by 38 publications

(14 citation statements)

References 34 publications

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“…BACKGROUND TDR is largely used for monitoring applications ad predictive maintenance, thanks to its versatility, relatively low implementation costs, and to the possibility of carrying out continuous, remotely-controllable, real-time measurements [22]. TDR has been applied widely for dielectric and spectroscopic characterizations of materials [23], [24], [25], [26]; fault diagnosis on wires [27], [28], [29] and failure in interconnections mechanisms [30]; water leak detection [31], [32], [33], [34]; soil moisture measurements [35], [36]; for measurements on devices and electronic components [37]; etc.…”

Section: Introductionmentioning

confidence: 99%

Hydration Monitoring and Moisture Control of Cement-Based Samples Through Embedded Wire-Like Sensing Elements

2015

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In this paper, a time-domain reflectrometry (TDR)-based solution for monitoring moisture content in cement-based samples is presented. The proposed system employs a simple flexible bi-wire, which acts as a 'distributed' sensing element (as opposed to traditional, local moisture content sensors). Once embedded, the sensing element (SE) remains permanently inside the cement-based sample and can be used both for monitoring the hydration process of the sample structures (ex-ante monitoring) and, successively, for monitoring possible water infiltration during the service life of the structure (ex-post monitoring). In practical applications, the SE could be employed inside building structures at the time of construction, and it could be used for the aforementioned moisture content monitoring purposes. As a preliminary validation of the practical feasibility of the proposed system, in this work, two cement-based samples (made of mortar and concrete, respectively) were equipped with a SE, and their water content was monitored through TDR measurements, over a 28-day period (thus mimicking the ex-ante monitoring conditions). Furthermore, to verify the potential of the proposed method also for the ex-post monitoring, the air-dried mortar sample was intentionally subjected to wetting conditions and the resulting rising damp was observed through the proposed TDRbased system.

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Section: Introductionmentioning

confidence: 99%

Hydration Monitoring and Moisture Control of Cement-Based Samples Through Embedded Wire-Like Sensing Elements

2015

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“…Cataldo et al 40 discussed MR-based dielectric spectroscopy of several types of vegetable oils, including seed oils, olive oils (either obtained from a single species of olive or from blends), and adulterated oils (obtained by diluting EVOO with SuO).…”

Section: Dielectric Spectroscopymentioning

confidence: 99%

Advanced detection methods for traceability of origin and authenticity of olive oils

Zhang

et al. 2015

Anal. Methods

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The adulteration of olive oils based on advanced sensors has attracted high interest owing to its health benefits in the prevention and treatment of certain pathologies. Concerning its health and commercial aspects, lower grade oil blending and other illegal additives in virgin olive oil can negatively affect the nutritive value of olive oil. This review focuses on the advances in the sensing and identification of adulteration of olive oil. Optical sensing, chromatography (usually coupled with mass spectrometry), and nuclear magnetic resonance are discussed in detail. Other methods including a DNA-based method, dielectric spectroscopy, differential scanning calorimetry, thermogravimetric analysis and electronic nose among others, are overviewed as well.

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“…Dielectric spectra were measured in the frequency range from 500 MHz to 20 GHz; this value shows good correlation and could represent a practical control value to decide if the final dehydrated samples shrink or swell by using the loss factor at relaxation frequency. [85] Similar technology was also developed for osmotic dehydration of kiwifruit [86] , pork meat salting process [87] and classification and adulteration control of vegetable oils [88] . It has been demonstrated that microwave dielectric spectroscopy which has the advantage of being an objective and a rapid technique is a good tool to control the surface water activity and can be considered an emerging rapid detection, better repeatability and lower costs on-line monitoring technology.…”

Section: Microwave Dielectric Spectroscopymentioning

confidence: 99%

Recent Developments in Smart Drying Technology

Zhang

Mujumdar

2014

Drying Technology

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With advances in computer, control and sensing technologies it is now possible to design smart dryers at least for certain products. In this paper, a generalized definition of smart (or intelligent) drying technology is proposed and discussed. Recent development in smart drying technology for fresh foods is reviewed briefly. Such technology can be cost effective in detecting and monitoring various food quality parameters which vary with time of the drying process, thus controlling the conditions of drying and producing high quality products. Some important categories of smart drying technology are listed and discussed; these include: biomimetic systems, computer vision technology, microwave dielectric spectroscopy, near infrared reflectance (NIR) spectroscopy, magnetic resonance imaging (MRI), ultrasonic techniques, electrostatic sensor technology and control systems for drying environment. Several latest applications of these smart drying technologies are analyzed. Key factors leading to success of smart drying technologies Downloaded by [Monash University Library] at 13:37 04 December 2014 2 are discussed. Developments, challenges, and applications, which represent a major step toward development of drying technology, are presented.

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Classification and adulteration control of vegetable oils based on microwave reflectometry analysis

Cited by 38 publications

References 34 publications

Hydration Monitoring and Moisture Control of Cement-Based Samples Through Embedded Wire-Like Sensing Elements

Hydration Monitoring and Moisture Control of Cement-Based Samples Through Embedded Wire-Like Sensing Elements

Advanced detection methods for traceability of origin and authenticity of olive oils

Recent Developments in Smart Drying Technology

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