Series quartz crystal sensor for remote bacteria population monitoring in raw milk via the Internet

Chang, Ku Shang; Jang, Hung Der; Lee, Ching Fu; Lee, Yuan Guey; Yuan, Chiun‐Jye; Lee, Sheng Hsien

doi:10.1016/j.bios.2005.07.015

Cited by 18 publications

(7 citation statements)

References 33 publications

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“…Due to the complication in actual biofilm, many factors cannot be taken into account such as viscosity of the solvent with synthesized metabolic compounds accumulation (Chang et al 2006), viscoelasticity, energy dissipation behavior, even mass from Nowtonian fluid condition. Besides, Sauerbrey equation is strictly valid for rigidly attached films (Brown-Malker et al 2010;Rodahl et al 1995).…”

Section: Characterization Of Sensed Frequency and Current Producion Fmentioning

confidence: 99%

Real-time monitoring of electrochemically active biofilm developing behavior on bioanode by using EQCM and ATR/FTIR

Liu

Berná

Climent

et al. 2015

Sensors and Actuators B: Chemical

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It is crucial to study the bacterial attaching behavior for revealing information of electrochemically active biofilm on the interface of liquid/electrode in microbial fuel cells (MFCs). In the current study, mixed-culture from waste water as model bacteria was investigated for gaining more sight onto relationship between current and biomass or onto bioadhesion mechanism at the molecular level using Electrochemical Quartz Crystal Microbalance (EQCM) and Attenuated Total Reflection-SEIRAS (ATR-SEIRAS) combined with electrochemistry. From the frequency shift using Sauerbrey equation via EQCM the maximum cells mass of 11.5 μg/cm 2 was estimated for the mature biofilm. Notably, the highest current density of 110 μA/μg·cm 2 occurred before maximum biomass coming, which indicated that mature biofilm may not be an optimal state for enhancing power output of MFCs. Furthermore, the sensed biomass attached on electrode for mature biofilm will be constant for more than 40 h * Corresponding author, On the other hand, using ATR-SEIRAS techniques the obvious adsorbed water structure change during biofilm formation on electrode surface was observed and showed that the absorption bands linked to bacterial adsorption increased. It can be concluded that water adsorption accompanies the adsorbed bacteria and the cells number attaching on the electrode increased with time. Especially, the direct contact of bacteria and electrode via outer-membrane protein can be confirmed via series spectra at amideⅠand amideⅡ modes and water movement from negative bands displacing by adsorbed bacteria. Our study provided supplementary information about the interaction between the microbes and solid electron acceptors beyond traditional electrochemistry. It is expected to explore more information on electrochemically active microbial kinetics for improvement of their competence and understanding of attaching mechanisms in nature using our approach.

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Section: Characterization Of Sensed Frequency and Current Producion Fmentioning

confidence: 99%

Real-time monitoring of electrochemically active biofilm developing behavior on bioanode by using EQCM and ATR/FTIR

Liu

Berná

Climent

et al. 2015

Sensors and Actuators B: Chemical

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“…In this paper, an innovative piezoelectric quartz crystal sensor for detecting H 2 S produced by bacteria is proposed. Piezoelectric quartz crystals have been successfully employed in microorganism detection based on the piezo-immune method (Le et al 1995;He et al 2002;He et al 2001) and nonmass response He et al 1995;He and Liu 2004;Kang et al 1996;Bao et al 1998;Qu et al 1998;He et al 2003;Zhao et al 2005;Chang et al 2006;He et al 2006). The sensor proposed in this paper is based on the classical mass response of the piezoelectric quartz crystal, which is caused by the special affinity of hydrogen sulf ide on a silver electrode.…”

Section: Introductionmentioning

confidence: 99%

A Novel QCM-based Biosensor for Detection of Microorganisms Producing Hydrogen Sulfide

Cui

Ren

2008

Analytical Letters

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A novel piezoelectric quartz crystal microbalance (QCM) device with gas permeable membrane is proposed for the detection of microorganisms producing hydrogen sulf ide (H 2 S). The detection theory is based on the adsorption of hydrogen sulf ide onto the silver electrode of the piezoelectric crystal sensor, which causes a dramatic decrease in the resonant frequency of QCM. A 100 Hz frequency shift is chosen as the criteria value to judge the presence of microorganisms producing H 2 S. Factors affecting detection were investigated. Desiccant is of great practical importance in sensor response. This new biosensor can be a potential candidate for detecting bacteria which produce hydrogen sulf ide.

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“…Detecting several contaminants with a single device is challenging. However, it has been demonstrated by using optical absorption spectroscopy (Theint, 2019), fiber optic Fourier Transform Infra-Red spectroscopy (Hassan, 2016), quartz crystal sensors (Chang, 2006) and electrochemistry (Safavieh, 2014). More generally, recent reviews concerning electrochemical biosensors (Cesewski, 2020) and impedimetric immunosensors (Leva-Bueno, 2020) for pathogen detection have been published.…”

Section: Introductionmentioning

confidence: 99%

Optical Spectroscopy Methods to Monitor Cells and Bacteria Concentrations and to Detect Contamination During Cell Culture: Application to the Fabrication of ATMPs

Wacogne

Legrand

Azzopardi

et al. 2021

Communications in Computer and Information Science

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Currently, the production of Advanced Therapy Medicinal Products is highly sensitive to any contamination sources and therefore takes place in clean and sterile environments. Several days are required for each production, making these products extremely expensive. Throughout the process, numerous quality controls must be performed. This is especially true during the expansion phase in order to monitor cell growth and to detect any contamination. Bioreactor's content must periodically be sampled to perform these controls. Two major drawbacks can be identified: a delayed knowledge of the quality control result and an additional risk of new contaminations due to sampling. In this work, we present optical spectroscopy methods which can be used to drastically reduce the risk of contamination. They provide a real time control of what happens in the bioreactor in a closed system manner. Cell concentrations are measured with an accuracy below 5% and contamination can be detected about 3 hours after it occurred. The real time operation leads to several tens of thousand dollars' savings because it allows stopping the production as soon as a problem arises. Consequently, the price of these products should be greatly reduced and they may be proposed to more patients.

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Series quartz crystal sensor for remote bacteria population monitoring in raw milk via the Internet

Cited by 18 publications

References 33 publications

Real-time monitoring of electrochemically active biofilm developing behavior on bioanode by using EQCM and ATR/FTIR

Real-time monitoring of electrochemically active biofilm developing behavior on bioanode by using EQCM and ATR/FTIR

A Novel QCM-based Biosensor for Detection of Microorganisms Producing Hydrogen Sulfide

Optical Spectroscopy Methods to Monitor Cells and Bacteria Concentrations and to Detect Contamination During Cell Culture: Application to the Fabrication of ATMPs

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