Application of electronic nose with MOS sensors to prediction of rapeseed quality

Gancarz, Marek; Wawrzyniak, Jolanta; Gawrysiak‐Witulska, Marzena; Wiącek, Dariusz; Nawrocka, Agnieszka; Tadla, Marcin; Rusinek, Robert

doi:10.1016/j.measurement.2017.02.042

Cited by 75 publications

(54 citation statements)

References 34 publications

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“…The operating parameters did not change during the adsorption and desorption of the substance through the sensors. The primary element of the device consists of eight MOS sensors, but only six of them strongly responded to VOCs and were therefore used in the present studies (Gancarz, Wawrzyniak, Gawrysiak‐Witulska, Wiącek, Nawrocka, & Rusinek, ; Gancarz, Wawrzyniak, Gawrysiak‐Witulska, Wiącek, Nawrocka, Tadla et al., ; Rusinek et al., ). The five TGS type sensors were produced by Figaro Engineering (Japan) and one MEMS type by Ams (USA).…”

Section: Methodsmentioning

confidence: 99%

“…Conducting polymer sensors usually exhibit a quick time of the adsorption phase (reaction time— t IM ) up to maximum responses and a quick desorption phase (cleaning time— t CL ) up to the baseline (Cyranose 320, USA) for grain VOCs research (Gancarz, Wawrzyniak, Gawrysiak‐Witulska, Wiącek, Nawrocka, & Rusinek, ; Kubiak, Wenzl, & Ulberth, ). In turn, metal oxide semiconductor (MOS) sensors react differently to the same substances; both phases can be longer and differ in shape (Gancarz, Wawrzyniak, Gawrysiak‐Witulska, Wiącek, Nawrocka, Tadla et al., ; Loutfi et al., ; Martinelli, Falconi, D'Amico, & Di Natale, ).…”

Section: Introductionmentioning

confidence: 99%

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Identification of Volatile Organic Compounds and Their Concentrations Using a Novel Method Analysis of MOS Sensors Signal

Gancarz

Nawrocka

Rusinek

2019

Journal of Food Science

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Volatile organic compounds (VOCs) are natural markers useful in rapid assessment of adverse changes occurring in biological material. The use of an electronic nose seems to be a good, fast, and cheap method to determine particular VOCs. This paper presents a new method determination for VOCs and their concentration based on three sensorgram parameters: maximum of normalized sensor response, reaction time, and cleaning time measured from the end of the test to the half value of the maximum of normalized sensor response. The novelty of the method consists in the use for the first time of two parameters: reaction time and cleaning time measured from the end of the test to the half value of the maximum of normalized sensor response. The VOC sensorgrams at different VOC concentrations (26 to 3,842 ppm) were measured by an electronic nose Food Volatile Compound Analyzer (Agrinose) equipped with eight metal oxide semiconductor sensors dedicated to detect different gases. In the present studies, only six sensors that best respond to the VOCs were used. The highest responses to VOCs were obtained for two sensors—TGS2602 and AS‐MLV‐P2. The results showed that the dependence between the sensorgram parameters on VOC concentration was well described by a logarithmic curve in the whole range of concentrations. Detailed analysis revealed that the cleaning time increases with an increase in the number of carbon atoms in aliphatic molecules. The principal component analysis (PCA) was used to verify the utility of the new three parameters method in VOCs differentiation. The PCA analysis of these parameters showed that maximum of the normalized sensor response alone, which has been used for identification of particular VOCs so far, could not be regarded as a good parameter used for this purpose. Application of all the three parameters gave the best results in VOC identification. The research indicates that the use of three parameters of a volatile compound instead of only one parameter can allow precise determination of substances. Moreover, the results indicate that the analyzed parameters depend on the chemical structure of VOCs.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Identification of Volatile Organic Compounds and Their Concentrations Using a Novel Method Analysis of MOS Sensors Signal

Gancarz

Nawrocka

Rusinek

2019

Journal of Food Science

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“…5 by the arrow pointing to the direction of the increasing degradation of seeds. Additionally, the authors suggested that the distinct grouping of sample 1, 2, and 3 was correlated mainly with field microflora and the overlapping groups of sample 4, 5, and 6 were correlated primarily with storage microflora (Gancarz et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

“…Methanol at 450 ml min -1 was used as the mobile phase. Ergosterol acetate was eluted at 2.15 min (Gancarz et al, 2017).…”

Section: Methodsmentioning

confidence: 99%

Electronic nose with polymer-composite sensors for monitoring fungal deterioration of stored rapeseed

Gancarz

Wawrzyniak

Gawrysiak‐Witulska

et al. 2017

International Agrophysics

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A b s t r a c t. Investigations were performed to examine the possibility of using an electronic nose to monitor development of fungal microflora during the first eighteen days of rapeseed storage. The Cyranose 320 device manufactured by Sensigent was used to analyse volatile organic compounds. Each sample of infected material was divided into three parts and the degree of spoilage was measured in three ways: analysis of colony forming units, determination of ergosterol content, and measurement of volatile organic compounds with the e-nose. Principal component analysis was performed on the generated patterns of signals and six groups of different spoilage levels were isolated. An analysis of sensorgrams for a few sensors with a strong signal for each group of rapeseed spoilage was performed. The ratio of the association time to the steady state was calculated. This ratio was different for the low level and the highest level of ergosterol and colony forming units. The results have shown that the e-nose can be a useful tool for quick estimation of the degree of rapeseed spoilage.

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“…Due to the short time and low cost of a single analysis, electronic noses have become an alternative to gas chromatography. Electronic noses (e-noses) are devices that are supposed to mimic the human sense of smell and are used in many areas of human activity [16–20]. Such devices consist of four main components, as given in Fig.…”

Section: Introductionmentioning

confidence: 99%

Monitoring of n-butanol vapors biofiltration process using an electronic nose combined with calibration models

2018

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Malodorous odors, by definition, are unpleasant, irritating smells being a mixture of volatile chemical compounds that can be sensed at low concentrations. Due to the increasing problem of odor nuisance associated with odor sensations, and thus the need to remove them from the air, deodorization techniques are commonly used. Biofiltration is one of the methods of reducing odorants in the air stream. In the paper, the possibility of using an electronic nose as an alternative method to gas chromatography for the online monitoring and evaluation of efficiency of the n-butanol vapors biofiltration process in a transient state was investigated. Three calibration models were used in the research, i.e., multiple linear regression, principal component regression, and partial least-square regression. The obtained results were compared with the theoretical values.Graphical abstract

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Application of electronic nose with MOS sensors to prediction of rapeseed quality

Cited by 75 publications

References 34 publications

Identification of Volatile Organic Compounds and Their Concentrations Using a Novel Method Analysis of MOS Sensors Signal

Identification of Volatile Organic Compounds and Their Concentrations Using a Novel Method Analysis of MOS Sensors Signal

Electronic nose with polymer-composite sensors for monitoring fungal deterioration of stored rapeseed

Monitoring of n-butanol vapors biofiltration process using an electronic nose combined with calibration models

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