Leptospirillum ferrooxidans based Fe2+ sensor

Stoytcheva, Margarita; Zlatev, Roumen; Magnin, Jean‐Pierre; Ovalle, Marcela; Valdez, Benjamín

doi:10.1016/j.bios.2009.08.019

Cited by 14 publications

(8 citation statements)

References 21 publications

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“…(11) Additionally, new types of microbes could be selected to increase specificity and selectivity of microbial biosensors. For example, Stoytcheva et al (121) developed a novel electrochemical biosensor integrating the strictly autotrophic bacterial strain Leptospirillum ferrooxidans as a recognition element for specic Fe 2+ determination, taking advantage of the lack of sensitivity to sulfur compounds and thus overcoming the main drawback of previous Fe 2+ sensors.…”

Section: Performance Improvementsmentioning

confidence: 99%

Microbial Biosensors for Environmental Monitoring and Food Analysis

Ying

2011

Food Reviews International

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A microbial biosensor is an elaborate analytic device that uses microorganisms as recognition elements, mainly for application in environmental monitoring, food safety, military defense, and medicine. The selection and immobilization of microorganisms are key steps that must first be addressed for microbial biosensors. Currently, genetically modified microorganisms play an increasingly significant role in improving the capacity of biosensors. Electrochemical and optical types of transducers have been widely employed in microbial biosensors, although bioluminescence and fluorescence methods have been highlighted recently. Additionally, the microbial fuel cell (MFC), which has been mainly applied in biological oxygen demand (BOD) biosensors, is a promising technology. This article reviews recent developments of microbial biosensors with respect to their applications in environmental monitoring and food analysis, including measurement of a variety of common pollutants, products in fermenting processes, antibiotic residues, and toxins in food. Current limitations and prospective future directions, such as performance optimization, developing portable biosensors for on-site monitoring, combination of genetic and DNA approaches, nanotechnology, and phage-based biosensors for foodborne pathogens, are also discussed in this review.

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Section: Performance Improvementsmentioning

confidence: 99%

Microbial Biosensors for Environmental Monitoring and Food Analysis

Ying

2011

Food Reviews International

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“…When complexation is the main principle involved, the temperature was generally not controlled. In rare exceptions, an acidic pH between 1 and 2 was exploited for biosensing [54,[65][66][67][68]]. An alkaline pH was not evaluated due to the decrease in biochemical responses and to the hydrolysis of metal ions.…”

Section: General Aspects and Statisticsmentioning

confidence: 99%

“…The acceleration of metabolic reactions was exploited for the determination and speciation analysis of Fe with Thiobacillus ferooxidans [54], Leptospirillium ferrooxidans [67], and Acidithiobacillus ferrooxidans [68] by monitoring the increase in O 2 consumption. These microorganisms are resistant to acidic media, which allowed direct determinations of Fe in acidic samples, such as mine waste and mineral extracts [54].…”

Section: Catalysis and Inhibitionmentioning

confidence: 99%

“…An additional feature of FET biosensors was the miniaturization that required low volumes of sample for analysis, especially for those applications on biological materials [39,84]. Other approaches include modified electrodes of commercial oximeters [49,54,67,68,106] based on an electrode coating with biofilms and the use of MFC for element analysis [50,52].…”

Section: Electrochemical Sensorsmentioning

confidence: 99%

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An overview of Structured Biosensors for Metal Ions Determination

et al. 2021

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The determination of metal ions is important for nutritional and toxicological assessment. Atomic spectrometric techniques are highly efficient for the determination of these species, but the high costs of acquisition and maintenance hinder the application of these techniques. Inexpensive alternatives for metallic element determination are based on dedicated biosensors. These devices mimic biological systems and convert biochemical processes into physical outputs and can be used for the sensitive and selective determination of chemical species such as cations. In this work, an overview of the proposed biosensors for metal ions determination was carried out considering the last 15 years of publications. Statistical data on the applications, response mechanisms, instrumentation designs, applications of nanomaterials, and multielement analysis are herein discussed.

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“…P. putida has already been tested as a biosensor for catechol, nitrophenol, benzene, toluene, and others (Rasinger et al, 2005; Timur et al, 2007; Banik et al, 2008); S. cerevisiae , for Cu 2++ (Tag et al, 2007); Acidithiobacillus ferrooxidans and Leptospirillum ferrooxidans , for Fe 2+ , S 2 O 3 2- , Cr 2 O 7 2- , and others (Zlatev et al, 2006; Stoytcheva et al, 2009); and Gluconobacter oxydans , for propanediol and ethanol (Katrlik et al, 2007; Valach et al, 2009), among others. Despite the great leap forward made by biotechnology in the area of microbial biosensor development, many challenges still need to be overcome.…”

Section: Materials Technological Microbiologymentioning

confidence: 99%

Technological Microbiology: Development and Applications

Vitorino

Bessa

2017

Front. Microbiol.

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Over thousands of years, modernization could be predicted for the use of microorganisms in the production of foods and beverages. However, the current accelerated pace of new food production is due to the rapid incorporation of biotechnological techniques that allow the rapid identification of new molecules and microorganisms or even the genetic improvement of known species. At no other time in history have microorganisms been so present in areas such as agriculture and medicine, except as recognized villains. Currently, however, beneficial microorganisms such as plant growth promoters and phytopathogen controllers are required by various agricultural crops, and many species are being used as biofactories of important pharmacological molecules. The use of biofactories does not end there: microorganisms have been explored for the synthesis of diverse chemicals, fuel molecules, and industrial polymers, and strains environmentally important due to their biodecomposing or biosorption capacity have gained interest in research laboratories and in industrial activities. We call this new microbiology Technological Microbiology, and we believe that complex techniques, such as heterologous expression and metabolic engineering, can be increasingly incorporated into this applied science, allowing the generation of new and improved products and services.

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Leptospirillum ferrooxidans based Fe2+ sensor

Cited by 14 publications

References 21 publications

Microbial Biosensors for Environmental Monitoring and Food Analysis

Microbial Biosensors for Environmental Monitoring and Food Analysis

An overview of Structured Biosensors for Metal Ions Determination

Technological Microbiology: Development and Applications

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