Monitoring of phenolic compounds in the food industry and for environmental medical applications has become more relevant recent years. Conventional methods detection quantification these compounds, such as spectrophotometry chromatography, are time consuming expensive. However, laccase biosensors represent a fast method on-line situ monitoring compounds. We discuss main transduction principles. divide electrochemical principle into amperometric, voltammetric, potentiometric conductometric...

Glycine is an essential amino acid involved in synthesizing a variety of important biomolecules, and its concentration can influence numerous biochemical processes, including the severity symptoms wide range conditions humans, such as cancer, schizophrenia, major depression, diabetes. While few costly or labour-intensive methods are currently available, we have developed new enzymatic biosensor that accurately measure glycine levels with remarkable simplicity. By employing immobilized...

Prodigiosin, a natural pigment produced as secondary metabolite by the non-photosynthetic bacterium Serratia marcescens, was tested sensitizer in dye-sensitized solar cells (DSSC). The strain S. marcescens 11E, which isolated from spring located northeastern Mexican state of Nuevo Leon, cultivated on peanut oil broth 1% v/v, culture medium is known to enhance production prodigiosin. resulting extracted with chloroform and identified prodigiosin based spectroscopic structural characteristics...

Chlorophene is an important antimicrobial agent present in disinfectant products which has been related to health and environmental effects, its detection limited chromatographic techniques. Thus, there a lack of research that attempts develop new analytical tools, such as biosensors, address the this emerging pollutant. Therefore, biosensor for direct chlorophene real water presented, based on surface plasmon resonance (SPR) using laccase enzyme recognition element. The chip was obtained by...

Worldwide, people’s quality of health has been decreasing due to bad eating habits that have generated an increase in diseases such as diabetes, hypertension, overweight, well hours the daily workday and stress. This situation can generate sudden illness work accidents where need knowledge emergency first response (EFR) is necessary for all. Unfortunately, workshops courses certify EFR individuals are usually taught only healthcare professionals. Therefore, address this a project developed...

Under the main features required on portable devices in electrochemical instrumentation is to have a small size, low power consumption, economically affordable and precision measurements. This paper describes development of programmable Embedded Potentiostat System (EPS) capable performing sensing over system-on-a-chip platforms. Furthermore, study explains circuit design develops some validation entire system. The hardware performed by experiments such as Double Step Chronoamperometry...

There is increasing interest in developing portable technologies to detect human health threats through hybrid materials that integrate specific bioreceptors. This work proposes an electrochemical approach for detecting 3-Phenoxybenzaldehyde (3-PBD), a biomarker monitoring exposure pyrethroid pesticides. The biosensor uses laccase enzymes as alternative recognition element by direct oxidation of 3-PBD catalysts the enzyme onto thin-film gold electrodes. electrode modified immobilized was...

Under the main features required on portable devices in electrochemical instrumentation is to have a small size, low power consumption, economically affordable, and precision measurements. This paper describes development of programmable Embedded Potentiostat System (EPS) capable performing sensing over system-on-a-chip platforms. Furthermore, study explains circuit design develops some validation entire system. The hardware performed by experiments such as Double Step Chronoamperometry...

This paper reports the use of laser ablation for fabrication a microfluidic device with integrated electrodes on printed circuit board (PCB-MEMS). The fabricated novel has flame retardant (FR)−4 resin as substrate, copper (Cu) active material, and SU-8 polymer structural material. resolution, repeatability, simplicity achieved in this approach, along low cost involved materials methods, enable an affordable micromachining technique rapid fabrication-test cycle to develop systems chip....

CMOS microelectronics design has evolved tremendously during the last two decades. The evolution of devices to short channel designs where feature size is below 1000 nm brings a great deal uncertainty in way cycle completed. After conceptual idea, developing thinking model understand operation device requires good "ballpark" evaluation transistor sizes, decision making, and assumptions fulfill specifications. This process iterations meet specifications that exceed number available degrees...

Despite the increasing number of reports that relate antimicrobial chlorophene (CP) with health and environmental effects, few studies have addressed biosensing technologies to detect this threat. This work proposed an electrochemical approach for detection CP using laccase enzymes as alternative recognition element immobilized onto thin-film gold electrodes. The parameters method, under controlled conditions, resulted in a limit (0.14 ± 0.06 mg L−1) quantification (0.48 0.04 agreed...

Interdigitated capacitive electrode structures have been used to monitor or actuate over organic and electrochemical media in efforts characterize biochemical properties. This article describes a method perform pre-characterization of interdigitated using two methods: hybrid voltage divider (HVD) vector network analyzer (VNA). Both methodologies develop some tests under different conditions: free air bi-distilled water media. Also, the HVD methodology is for other phosphate buffer with...