Control of the brewing process by using microwaves dielectric spectroscopy

Velázquez-Varela, J.; Castro‐Giráldez, Marta; Fito, P.

doi:10.1016/j.jfoodeng.2013.06.032

Cited by 15 publications

(3 citation statements)

References 30 publications

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“…The analysis of the electromagnetic field (EMF) properties in range of microwaves could be a good tool to monitor and improve apple candying. The development of sensors to determine the dielectric properties of biological tissues, in range of radiofrequency and microwaves, has been demonstrated to be a useful tool for monitoring the quality of many products: Poultry [18,19,20,21,22], pork [23,24,25,26,27], beef [28], goat [29], meat products [30], cheese [31], mandarin [32], potato [33], wheat [34], agricultural products [35,36,37], pomegranate [38] and apple [39,40,41], and for monitoring processes of pork meat HAD [42] and salting [43], orange peel drying [44], cheese salting [45], brewing [46], puffing of amaranth seeds [47], OD of kiwi [48] and apple [49].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Apple Candying by Microwave Spectroscopy

Tomas-Egea

Fito

Castro‐Giráldez

2019

Foods

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Process control in the industry requires fast, safe and easily applicable methods. In this sense, the use of dielectric spectroscopy in the microwave range can be a great opportunity to monitor processes in which the mobility and quantity of water is the main property to produce a quality and safety product. The candying of fruits is an operation in which the samples are first osmotically dehydrated and then exposed to a hot air-drying operation. This process produces changes in both the structure of the tissue and the relationships between water, the solid matrix and the added soluble solids. The aim of this paper is to develop a dielectric tool to predict the water/sucrose states throughout the candying of apple, by considering the complexity of the tissue and describing the different transport phenomena and the different transition processes of the sucrose inside the sample.

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Section: Introductionmentioning

confidence: 99%

Analysis of Apple Candying by Microwave Spectroscopy

Tomas-Egea

Fito

Castro‐Giráldez

2019

Foods

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“…The application of an electric field to biological tissue causes the vibration of ions, increasing the internal energy of the molecules; therefore, ionic conductivity only affects the loss factor. Dielectric spectroscopy, in the range of radiofrequency and microwaves, has been used to monitor some products and processes, for example, salting level, composition of added compounds or quality determination in meat products (Castro-Giráldez et al, 2010a,b;Kent et al, 2002;Lyng et al, 2005), ripening indexes, sugar content or moisture in fruits and cereals Nelson, 2005Nelson, , 2008Nelson and Trabelsi, 2006), degree of alcohol and sugar content throughout the beer fermentation process (Velázquez-Varela et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Study of the application of dielectric spectroscopy to predict the water activity of meat during drying process

Traffano-Schiffo

Castro‐Giráldez

Colom

et al. 2015

Journal of Food Engineering

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“…Besides, the sensor has a small footprint with dimensions of 3.6 × 3.8 mm 2 making it a suitable candidate for integration with point-of-care testing devices.Complex permittivity is one of the primary characteristics of a dielectric material which defines its response to an electric field. Being able to measure and quantify this particular property is extremely desired in numerous applications, including but not limited to healthcare 1,2 , food industry 3,4 , and even art preservation 5 . Thus, substantial effort has been directed toward the design and demonstration of a fast, accurate, and economical sensor for characterizing complex permittivity.…”

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confidence: 99%

Ultrasensitive miniaturized planar microwave sensor for characterization of water–alcohol mixtures

Javadizadeh,

Badieirostami,

Shahabadi

2023

Sci Rep

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Designing a low-cost, compact, yet sensitive planar microwave sensor for complex permittivity measurement is highly desired for numerous applications though quite challenging. Here, in this research, an ultrasensitive planar microwave sensor is proposed which is based on an electric LC structure. The core sensor was fabricated on an FR-4 substrate using a simple fabrication process, then integrated within a polymethylmethacrylate microfluidic channel for straightforward liquid delivery to the sensing region. The resonance frequency of the bare sensor was designed to occur at 4.14 GHz while empty and shifted to 0.88 GHz when deionized water flows into the channel. The sensor response has been characterized for different mixture ratios of methanol and ethanol with deionized water. Next, the complex permittivity of the resulted binary mixtures has been extracted by the Debye model through a least square fitting method. The calculated average sensitivity is 1.45% which stands above most of sensors reported in the literature. Besides, the sensor has a small footprint with dimensions of 3.6 × 3.8 mm$$^2$$ 2 making it a suitable candidate for integration with point-of-care testing devices.

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Control of the brewing process by using microwaves dielectric spectroscopy

Cited by 15 publications

References 30 publications

Analysis of Apple Candying by Microwave Spectroscopy

Analysis of Apple Candying by Microwave Spectroscopy

Study of the application of dielectric spectroscopy to predict the water activity of meat during drying process

Ultrasensitive miniaturized planar microwave sensor for characterization of water–alcohol mixtures

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