Tag Archives: biochemistry

Wearable Technology for Bio-Chemical Analysis of Body Fluids During Exercise

Abstract This paper details the development of a textile based fluid handling system with integrated wireless biochemical sensors. Such research represents a new advancement in the area of wearable technologies. The system contains pH, sodium and conductivity sensors. It has been demonstrated during on-body trials that the pH sensor has close agreement with measurements obtained using [...]

Pest Control Agents from Natural Products

Abstract Natural products have been used to control animal pests, plant diseases, and weeds since ancient times. Plants have been the most important sources of natural pesticides for centuries and preparations standardized for the active ingredient(s) by modern analytical methods became available in the last decades, making possible the manufacture of reliable products. More recently [...]

Towards Biosensing Strategies Based on Biochemical Logic Systems

Abstract Recent advances in biochemical computing, i.e., information processing with cascades of primarily enzymatic reactions realizing computing gates, such as AND, OR, etc., as well as progress in networking these gates and coupling of the resulting systems to smart/responsive electrodes for output readout, have opened new biosensing opportunities. Here we survey existing enabling research results, [...]

Novel semiconductor materials for the development of chemical sensors and biosensors: A review

Abstract The aim of this manuscript is to provide a condensed overview of the contribution of certain relatively new semiconductor substrates…The silicon era is initially reviewed providing the background onto which the deployment of the new semiconductor materials for the development of bio-chem-FETs is based on. Subsequently emphasis is given to the selective interaction of [...]

Plants as Environmental Biosensors

Abstract Plants are continuously exposed to a wide variety of perturbations including variation of temperature and/or light, mechanical forces, gravity, air and soil pollution, drought, deficiency or surplus of nutrients, attacks by insects and pathogens, etc., and hence, it is essential for all plants to have survival sensory mechanisms against such perturbations. Consequently, plants generate [...]

A living cell-based biosensor utilizing G-protein coupled receptors: Principles and detection methods

Abstract This study explores the feasibility of using a bullfrog fibroblast cell line (FT cells) expressing protein coupled receptors (GPCRs) as the basis for a living cell-based biosensor. We have fabricated gold microelectrode arrays on a silicon dioxide substrate that supports long term, robust growth of the cells at room temperature and under ambient atmospheric [...]

Bioluminescent Escherichia coli Strains for the Quantitative Detection of Phosphate and Ammonia in Coastal and Suburban Watersheds

Abstract …Analytic chemistry kits are used to measure phosphate and ammonia levels in water samples with algal blooms, but their sensitivity is limited due to specificity for inorganic forms of these moieties. An Escherichia coli bioluminescent reporter system measured the bioavailability of inorganic nutrients through fusion of E. coli promoters ( phoA or glnAp2) to [...]