Monitoring yeast activation with sugar and zero-calorie sweetener using terahertz waves

Fawole, Olutosin; Sinha, Kushagra; Tabib-Azar, Massood

doi:10.1109/icsens.2015.7370322

Cited by 8 publications

(5 citation statements)

References 8 publications

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“…31 A frequency of 1.1 THz for Saccharomyces cerevisiae DNA is predicted and closely corresponds with measurements in the frequency band between 0.75 and 1.1 THz that have been used to monitor changes in S. cerevisiae. 32 Emission wavelengths associated with dsDNA in two strains of E. coli (one benign to humans the other pathogenic) fall within with the infrared range. Laser tweezer Raman spectroscopy has been used to measure single cells of E. coli and spectra correspond to peak intensities from 1000 to 2000 cm -1 (Ref.…”

Section: Bioelectronic Emissions Of Dnamentioning

confidence: 99%

Role of Brownian Particle Velocity in Bioelectronic Emissions of DNA

Oates

2020

Bioelectricity

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Hypothesis: If double stranded DNA (dsDNA) is a charged biomolecule that moves in Earth's magnetic field at a Brownian velocity, then dsDNA may emit bioelectromagnetic waves at energies that reflect discrete genetic states. Methods: This work leverages the Planck-Einstein-de Broglie relationship and applies this concept to Brownian velocity of dsDNA within a cell, to describe the relationship between dsDNA mass, the average Brownian velocity of dsDNA within a cell, and the theoretical wavelengths at which DNA may emit bioelectromagnetic waves.Results: Theoretical emission wavelengths of dsDNA, derived from first principles, were found to correlate closely with experimentally observed emission wavelengths from spectroscopic measurements across various cellular systems in the literature. Conclusion:This work provides a conceptual basis for the potential for unification of bioelectromagnetism with Brownian motion, to elucidate how electromagnetic information can be generated at a subcellular level in biological systems. The implications of how finite mass changes in dsDNA can result in discrete emission wavelengths on electromagnetic timescales is discussed through the lens of genomics. Future refinements of this fundamental methodology may provide a conceptual basis to address previously unexplained multilevel phenomena in the field of biology and is general enough to be extended to other charged biomolecules at a subcellular level. Further exploration in this area could lead to new biological tool development that may augment current genomics methods.

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Section: Bioelectronic Emissions Of Dnamentioning

confidence: 99%

Role of Brownian Particle Velocity in Bioelectronic Emissions of DNA

Oates

2020

Bioelectricity

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“…Fawole et al. () evaluated the effect of sugar type on the growth of yeasts. The frequency‐averaged reflection was measured for three different samples (Table ).…”

Section: Food Applications Of Thz Spectroscopy and Imagingmentioning

confidence: 99%

“…The lower stability of sorbitol-pyridine could be due to the disruption of its intermolecular hydrogen bond network. Fawole et al (2015) evaluated the effect of sugar type on the growth of yeasts. The frequency-averaged reflection was measured for three different samples (Table 8).…”

Section: Detection Of Carbohydrates and Sweetenersmentioning

confidence: 99%

“…Due to their high THz dielectric constant, yeast cells proved to be ideal for optimizing THz‐based microbial sensors (Table ). Fawole, Sinha, and Tabib‐Azar () monitored the fermentation process and studied the effect of normal sugar and artificial sweeteners on the growth of Saccharomyces cerevisiae using THz (Table ). Surprisingly, artificial sweeteners resulted in vigorous bubbling in the solution, and maximum growth of yeast colonies was observed within 24 min.…”

Section: Food Applications Of Thz Spectroscopy and Imagingmentioning

confidence: 99%

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A Comprehensive Review on Food Applications of Terahertz Spectroscopy and Imaging

Afsah‐Hejri

Hajeb

Ara

et al. 2019

Comp Rev Food Sci Food Safe

222

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Food product safety is a public health concern. Most of the food safety analytical and detection methods are expensive, labor intensive, and time consuming. A safe, rapid, reliable, and nondestructive detection method is needed to assure consumers that food products are safe to consume. Terahertz (THz) radiation, which has properties of both microwave and infrared, can penetrate and interact with many commonly used materials. Owing to the technological developments in sources and detectors, THz spectroscopic imaging has transitioned from a laboratory‐scale technique into a versatile imaging tool with many practical applications. In recent years, THz imaging has been shown to have great potential as an emerging nondestructive tool for food inspection. THz spectroscopy provides qualitative and quantitative information about food samples. The main applications of THz in food industries include detection of moisture, foreign bodies, inspection, and quality control. Other applications of THz technology in the food industry include detection of harmful compounds, antibiotics, and microorganisms. THz spectroscopy is a great tool for characterization of carbohydrates, amino acids, fatty acids, and vitamins. Despite its potential applications, THz technology has some limitations, such as limited penetration, scattering effect, limited sensitivity, and low limit of detection. THz technology is still expensive, and there is no available THz database library for food compounds. The scanning speed needs to be improved in the future generations of THz systems. Although many technological aspects need to be improved, THz technology has already been established in the food industry as a powerful tool with great detection and quantification ability. This paper reviews various applications of THz spectroscopy and imaging in the food industry.

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“…Microwave wavelengths can vary over a wide range from 100 cm (300 MHz) down to 30 µm (10 THz) providing a powerful monitoring technique with a wide range of spatial resolutions and penetration depth. We are in the process of performing terahertz reflectometry [ 24 , 25 ] and high-spatial resolution measurements of hydrogels, and these results will be reported in the near future.…”

Section: Introductionmentioning

confidence: 99%

Remote Microwave and Field-Effect Sensing Techniques for Monitoring Hydrogel Sensor Response

et al. 2018

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This paper presents two novel techniques for monitoring the response of smart hydrogels composed of synthetic organic materials that can be engineered to respond (swell or shrink, change conductivity and optical properties) to specific chemicals, biomolecules or external stimuli. The first technique uses microwaves both in contact and remote monitoring of the hydrogel as it responds to chemicals. This method is of great interest because it can be used to non-invasively monitor the response of subcutaneously implanted hydrogels to blood chemicals such as oxygen and glucose. The second technique uses a metal-oxide-hydrogel field-effect transistor (MOHFET) and its associated current-voltage characteristics to monitor the hydrogel’s response to different chemicals. MOHFET can be easily integrated with on-board telemetry electronics for applications in implantable biosensors or it can be used as a transistor in an oscillator circuit where the oscillation frequency of the circuit depends on the analyte concentration.

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Monitoring yeast activation with sugar and zero-calorie sweetener using terahertz waves

Cited by 8 publications

References 8 publications

Role of Brownian Particle Velocity in Bioelectronic Emissions of DNA

Role of Brownian Particle Velocity in Bioelectronic Emissions of DNA

A Comprehensive Review on Food Applications of Terahertz Spectroscopy and Imaging

Remote Microwave and Field-Effect Sensing Techniques for Monitoring Hydrogel Sensor Response

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