Rapid Detection of Heavy Metals with the Response of Carotenoids in Daucus Carota

Wong, Ling Shing; Choong, Chieh Wean

doi:10.7763/ijesd.2014.v5.490

Cited by 6 publications

(7 citation statements)

References 31 publications

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“…Eukaryotic plant cells such as D. carota has been used in the study of whole cell biosensors [13]. D. carota cells suspension were utilized as the biological component, and the response of carotenoids in the cells after the exposure to heavy metals was detected with spectrometric approach.…”

Section: Other Types Of Whole Cell-based Biosensorsmentioning

confidence: 99%

“…D. carota cells suspension were utilized as the biological component, and the response of carotenoids in the cells after the exposure to heavy metals was detected with spectrometric approach. According to Wong and Choong [13], D. carota or carrot cell was chosen as the biological component because of the high carotenoids content found in the cell.…”

Section: Other Types Of Whole Cell-based Biosensorsmentioning

confidence: 99%

“…To date, different types of whole cells, such as cyanobacteria [9], algae [10], yeast [11], fungi [12], and plant cells [13] have been used in whole cell biosensors. In this review, we would like to focus our discussion on the biosensors which the cells are coupled to electronic devices through transducers [14], while the practicality of the biosensors, such as sensitivity, linear detection range, specificity, lowest limit of detection (LLD), and immobilization are described.…”

Section: Introductionmentioning

confidence: 99%

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Whole Cell-based Biosensors for Environmental Heavy Metals Detection

Teo

Wong

Nilai³

2014

ARRB

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Biosensors have emerged as new alternatives in environmental toxicity assessment. In the development of biosensors for heavy metals detection in environment, whole cells are highly favored as these cells are able to reflect the real toxicity effects of heavy metals to living organisms. For heavy metals detection, the integration of several types of cells such as bacteria, cyanobacteria, and algae into biosensors development has been widely reported. The usage of other cells such as plant cell, protozoa, and yeast has been reported as well. Although these biosensors are highly sensitive to heavy metals, the detection is still limited to the heavy metals which are bioavailable to the cells. Besides, the response of whole cells to wide range of heavy metals makes them excellent tools for wide spectrum screening but lack of specificity in detection. Whole cells are living entities with complex biochemical processes, which make the optimization of whole cell-based biosensors a tedious process, while maintaining the stability and storability are still challenging tasks. Although naturally occurring cells are highly favored, some reports show that recombinant cells can be a choice with better performance. In this paper, the usage of whole cells in biosensors for heavy metals detection and some of the current issues which are tied to the development of these biosensors are reviewed.

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Section: Other Types Of Whole Cell-based Biosensorsmentioning

confidence: 99%

Section: Other Types Of Whole Cell-based Biosensorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Whole Cell-based Biosensors for Environmental Heavy Metals Detection

Teo

Wong

Nilai³

2014

ARRB

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“…Some dyes made of natural pigments have shown a potential application in colorimetric metal detection. Studies have reported that metal ions can form complexes with dye molecules, such as betalains with nickel and copper [29], curcuminoids with lead [30], anthocyanins with iron [31], and carotenoids with copper, zinc, and lead [32]. These studies proved that natural pigments may also be alternative reagents for portable metal analysers.…”

Section: Introductionmentioning

confidence: 97%

An Update on the Use of Natural Pigments and Pigment Nanoparticle Adducts for Metal Detection Based on Colour Response

2023

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Natural pigments occur in plants as secondary metabolites and have been used as safe colourants in food. Studies have reported that their unstable colour intensity might be related to metal ion interaction, which leads to the formation of metal–pigment complexes. This underlines the need for further investigations on the use of natural pigments in metal detection using colorimetric methods, since metals are important elements and can be hazardous when present in large amounts. This review aimed to discuss the use of natural pigments (mainly betalains, anthocyanins, curcuminoids, carotenoids, and chlorophyll) as reagents for portable metal detection based on their limits of detection, to determine which pigment is best for certain metals. Colorimetric-related articles over the last decade were gathered, including those involving methodological modifications, sensor developments, and a general overview. When considering sensitivity and portability, the results revealed that betalains are best applied for copper, using a smartphone-assisted sensor; curcuminoids are best applied for lead, using a curcumin nanofiber; and anthocyanin is best applied for mercury, using anthocyanin hydrogel. This provides a new perspective on the use of colour instability for the detection of metals with modern sensor developments. In addition, a coloured sheet representing metal concentrations may be useful as a standard to support on-site detection with trials on masking agents to improve selectivity.

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“…To overcome these limitations, there is urgent need to fabricate amperometric sensor which is a rapid technique, provide the accurate information, portable and cost effective analytical method 11 . For a definitive electrochemical biosensor there is need of a suitable receptor in the recognition layer, the receptor is a molecule that binds the marked object [12][13][14][15][16][17] . In the last few decades, there has been reported many applications of conducting polymers [18][19][20] .…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Novel Amperometric Sensor for the Detection of Zinc Metal as an Environment Pollutant

2018

Chem Sci Trans

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Abstract:We have fabricated graphite, carbon nanotube (CNT) and conducting polymer (polyaniline) based electrochemical sensor for the detection of zinc metal as an environment pollutant. The electrochemical performance of amperometric sensor was tested by cyclic voltammetry, amperometry and linear sweep voltammetry experiments. The developed amperometric sensor displays good electrochemical activity towards the detection of zinc present in the environment. Storage and stability conditions were also tested. Fabricated non-enzymatic amperometric sensor was successfully used for the precise, sensitive and specific detection of zinc metal present as an environment pollutant.

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Rapid Detection of Heavy Metals with the Response of Carotenoids in Daucus Carota

Cited by 6 publications

References 31 publications

Whole Cell-based Biosensors for Environmental Heavy Metals Detection

Whole Cell-based Biosensors for Environmental Heavy Metals Detection

An Update on the Use of Natural Pigments and Pigment Nanoparticle Adducts for Metal Detection Based on Colour Response

Fabrication of Novel Amperometric Sensor for the Detection of Zinc Metal as an Environment Pollutant

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