A screen-printed, amperometric, biosensor array for the detection of organophosphate pesticides based on inhibition of wild type, and mutant acetylcholinesterases, from Drosophila melanogaster
Identifieur interne : 000097 ( PascalFrancis/Curation ); précédent : 000096; suivant : 000098A screen-printed, amperometric, biosensor array for the detection of organophosphate pesticides based on inhibition of wild type, and mutant acetylcholinesterases, from Drosophila melanogaster
Auteurs : A. Crew [Royaume-Uni] ; J. P. Hart [Royaume-Uni] ; R. Wedge [Royaume-Uni] ; J. L. Marty [France] ; D. Fournier [France]Source :
- Analytical letters [ 0003-2719 ] ; 2004.
Descripteurs français
- Pascal (Inist)
- Ampérométrie, Biodétecteur, Inhibition, Electrode carbone, Transducteur, Enzyme, Chronoampérométrie, Etalonnage, Industrie alimentaire, Produit alimentaire, Blé, Pomme, Préparation échantillon, Capteur chimique, Pesticide, Acetylcholinesterase, Cobalt, Phtalocyanine, Plomb, Dibenzo-p-dioxine(polychloro), Chlorpyriphos, Malaoxon.
- Wicri :
- topic : Enzyme, Industrie alimentaire, Produit alimentaire, Blé, Pesticide, Cobalt, Plomb.
English descriptors
- KwdEn :
Abstract
Screen-printed carbon electrodes (SPCEs) modified with cobalt phthalocyanine (CoPC) have been used as base transducers in the construction of amperometric pesticide biosensors. Six individual biosensors were fabricated by depositing wildtype (WT) acetylcholinesterase (AChE) from Drosophila melanogaster or one of five mutant forms (B02, B03, B04, B421, and B65) of this enzyme, onto the surfaces of CoPC-SPCEs; these constituted the amperometric biosensor array. The enzyme converts acetylthiocholine into its electroactive product thiocholine. which is detected at only 0V vs. Ag/AgCl at the CoPC-SPCEs. The measurement step is performed using chronoamperometry. In the presence of an organophosphate (OP) pesticide, the enzyme is inhibited, which leads to a decrease in thiocholine production and a corresponding decrease in anodic current. This decrease is proportional to the logarithm of the pesticide concentration. Calibration studies were performed with the biosensor array using five OPs of interest to the food industry, namely omethoate, malaoxon, dichlorvos, chlorpyrifos-methyl-oxon, and pirimiphosmethyl-oxon. It was found that different inhibition patterns occurred for the five OPs indicating the possibility of identifying and quantifying these compounds in food samples. It should be added that there was no detrimental affect on the biosensor response from wheat or apple extracts.
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Links toward previous steps (curation, corpus...)
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Pascal:05-0048689Le document en format XML
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<s3>FRA</s3>
<sZ>5 aut.</sZ>
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<series><title level="j" type="main">Analytical letters</title>
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<term>Apple</term>
<term>Biosensor</term>
<term>Calibration</term>
<term>Carbon electrode</term>
<term>Chemical sensor</term>
<term>Chlorpyrifos</term>
<term>Chronoamperometry</term>
<term>Cobalt</term>
<term>Enzyme</term>
<term>Food industry</term>
<term>Foodstuff</term>
<term>Inhibition</term>
<term>Lead</term>
<term>Pesticides</term>
<term>Phthalocyanine</term>
<term>Sample preparation</term>
<term>Transducer</term>
<term>Wheat</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Ampérométrie</term>
<term>Biodétecteur</term>
<term>Inhibition</term>
<term>Electrode carbone</term>
<term>Transducteur</term>
<term>Enzyme</term>
<term>Chronoampérométrie</term>
<term>Etalonnage</term>
<term>Industrie alimentaire</term>
<term>Produit alimentaire</term>
<term>Blé</term>
<term>Pomme</term>
<term>Préparation échantillon</term>
<term>Capteur chimique</term>
<term>Pesticide</term>
<term>Acetylcholinesterase</term>
<term>Cobalt</term>
<term>Phtalocyanine</term>
<term>Plomb</term>
<term>Dibenzo-p-dioxine(polychloro)</term>
<term>Chlorpyriphos</term>
<term>Malaoxon</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Enzyme</term>
<term>Industrie alimentaire</term>
<term>Produit alimentaire</term>
<term>Blé</term>
<term>Pesticide</term>
<term>Cobalt</term>
<term>Plomb</term>
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<front><div type="abstract" xml:lang="en">Screen-printed carbon electrodes (SPCEs) modified with cobalt phthalocyanine (CoPC) have been used as base transducers in the construction of amperometric pesticide biosensors. Six individual biosensors were fabricated by depositing wildtype (WT) acetylcholinesterase (AChE) from Drosophila melanogaster or one of five mutant forms (B02, B03, B04, B421, and B65) of this enzyme, onto the surfaces of CoPC-SPCEs; these constituted the amperometric biosensor array. The enzyme converts acetylthiocholine into its electroactive product thiocholine. which is detected at only 0V vs. Ag/AgCl at the CoPC-SPCEs. The measurement step is performed using chronoamperometry. In the presence of an organophosphate (OP) pesticide, the enzyme is inhibited, which leads to a decrease in thiocholine production and a corresponding decrease in anodic current. This decrease is proportional to the logarithm of the pesticide concentration. Calibration studies were performed with the biosensor array using five OPs of interest to the food industry, namely omethoate, malaoxon, dichlorvos, chlorpyrifos-methyl-oxon, and pirimiphosmethyl-oxon. It was found that different inhibition patterns occurred for the five OPs indicating the possibility of identifying and quantifying these compounds in food samples. It should be added that there was no detrimental affect on the biosensor response from wheat or apple extracts.</div>
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<fA08 i1="01" i2="1" l="ENG"><s1>A screen-printed, amperometric, biosensor array for the detection of organophosphate pesticides based on inhibition of wild type, and mutant acetylcholinesterases, from Drosophila melanogaster</s1>
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<fC01 i1="01" l="ENG"><s0>Screen-printed carbon electrodes (SPCEs) modified with cobalt phthalocyanine (CoPC) have been used as base transducers in the construction of amperometric pesticide biosensors. Six individual biosensors were fabricated by depositing wildtype (WT) acetylcholinesterase (AChE) from Drosophila melanogaster or one of five mutant forms (B02, B03, B04, B421, and B65) of this enzyme, onto the surfaces of CoPC-SPCEs; these constituted the amperometric biosensor array. The enzyme converts acetylthiocholine into its electroactive product thiocholine. which is detected at only 0V vs. Ag/AgCl at the CoPC-SPCEs. The measurement step is performed using chronoamperometry. In the presence of an organophosphate (OP) pesticide, the enzyme is inhibited, which leads to a decrease in thiocholine production and a corresponding decrease in anodic current. This decrease is proportional to the logarithm of the pesticide concentration. Calibration studies were performed with the biosensor array using five OPs of interest to the food industry, namely omethoate, malaoxon, dichlorvos, chlorpyrifos-methyl-oxon, and pirimiphosmethyl-oxon. It was found that different inhibition patterns occurred for the five OPs indicating the possibility of identifying and quantifying these compounds in food samples. It should be added that there was no detrimental affect on the biosensor response from wheat or apple extracts.</s0>
</fC01>
<fC02 i1="01" i2="X"><s0>001C04E</s0>
</fC02>
<fC02 i1="02" i2="X"><s0>002A31C09B</s0>
</fC02>
<fC02 i1="03" i2="X"><s0>001C04A</s0>
</fC02>
<fC02 i1="04" i2="X"><s0>215</s0>
</fC02>
<fC03 i1="01" i2="X" l="FRE"><s0>Ampérométrie</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="ENG"><s0>Amperometry</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="SPA"><s0>Amperometría</s0>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="X" l="FRE"><s0>Biodétecteur</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="ENG"><s0>Biosensor</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="SPA"><s0>Biodetector</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="X" l="FRE"><s0>Inhibition</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="ENG"><s0>Inhibition</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA"><s0>Inhibición</s0>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="X" l="FRE"><s0>Electrode carbone</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="ENG"><s0>Carbon electrode</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="SPA"><s0>Electrodo carbono</s0>
<s5>04</s5>
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<fC03 i1="05" i2="X" l="FRE"><s0>Transducteur</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="ENG"><s0>Transducer</s0>
<s5>05</s5>
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<fC03 i1="05" i2="X" l="SPA"><s0>Transductor</s0>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE"><s0>Enzyme</s0>
<s2>FE</s2>
<s5>06</s5>
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<fC03 i1="06" i2="X" l="ENG"><s0>Enzyme</s0>
<s2>FE</s2>
<s5>06</s5>
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<fC03 i1="06" i2="X" l="SPA"><s0>Enzima</s0>
<s2>FE</s2>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE"><s0>Chronoampérométrie</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG"><s0>Chronoamperometry</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA"><s0>Cronoamperimetría</s0>
<s5>07</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE"><s0>Etalonnage</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="ENG"><s0>Calibration</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="SPA"><s0>Contraste</s0>
<s5>08</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE"><s0>Industrie alimentaire</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG"><s0>Food industry</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA"><s0>Industria alimenticia</s0>
<s5>09</s5>
</fC03>
<fC03 i1="10" i2="X" l="FRE"><s0>Produit alimentaire</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="X" l="ENG"><s0>Foodstuff</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="X" l="SPA"><s0>Producto alimenticio</s0>
<s5>10</s5>
</fC03>
<fC03 i1="11" i2="X" l="FRE"><s0>Blé</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="X" l="ENG"><s0>Wheat</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="X" l="SPA"><s0>Trigo</s0>
<s5>11</s5>
</fC03>
<fC03 i1="12" i2="X" l="FRE"><s0>Pomme</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="ENG"><s0>Apple</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="SPA"><s0>Manzana</s0>
<s5>12</s5>
</fC03>
<fC03 i1="13" i2="X" l="FRE"><s0>Préparation échantillon</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="X" l="ENG"><s0>Sample preparation</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="X" l="SPA"><s0>Preparación muestreo</s0>
<s5>13</s5>
</fC03>
<fC03 i1="14" i2="X" l="FRE"><s0>Capteur chimique</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="X" l="ENG"><s0>Chemical sensor</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="X" l="SPA"><s0>Captador químico</s0>
<s5>14</s5>
</fC03>
<fC03 i1="15" i2="X" l="FRE"><s0>Pesticide</s0>
<s5>15</s5>
</fC03>
<fC03 i1="15" i2="X" l="ENG"><s0>Pesticides</s0>
<s5>15</s5>
</fC03>
<fC03 i1="15" i2="X" l="SPA"><s0>Plaguicida</s0>
<s5>15</s5>
</fC03>
<fC03 i1="16" i2="X" l="FRE"><s0>Acetylcholinesterase</s0>
<s2>FE</s2>
<s5>16</s5>
</fC03>
<fC03 i1="16" i2="X" l="ENG"><s0>Acetylcholinesterase</s0>
<s2>FE</s2>
<s5>16</s5>
</fC03>
<fC03 i1="16" i2="X" l="SPA"><s0>Acetylcholinesterase</s0>
<s2>FE</s2>
<s5>16</s5>
</fC03>
<fC03 i1="17" i2="X" l="FRE"><s0>Cobalt</s0>
<s2>NC</s2>
<s5>17</s5>
</fC03>
<fC03 i1="17" i2="X" l="ENG"><s0>Cobalt</s0>
<s2>NC</s2>
<s5>17</s5>
</fC03>
<fC03 i1="17" i2="X" l="SPA"><s0>Cobalto</s0>
<s2>NC</s2>
<s5>17</s5>
</fC03>
<fC03 i1="18" i2="X" l="FRE"><s0>Phtalocyanine</s0>
<s2>NK</s2>
<s5>18</s5>
</fC03>
<fC03 i1="18" i2="X" l="ENG"><s0>Phthalocyanine</s0>
<s2>NK</s2>
<s5>18</s5>
</fC03>
<fC03 i1="18" i2="X" l="SPA"><s0>Ftalocianina</s0>
<s2>NK</s2>
<s5>18</s5>
</fC03>
<fC03 i1="19" i2="X" l="FRE"><s0>Plomb</s0>
<s2>NC</s2>
<s2>FX</s2>
<s5>19</s5>
</fC03>
<fC03 i1="19" i2="X" l="ENG"><s0>Lead</s0>
<s2>NC</s2>
<s2>FX</s2>
<s5>19</s5>
</fC03>
<fC03 i1="19" i2="X" l="SPA"><s0>Plomo</s0>
<s2>NC</s2>
<s2>FX</s2>
<s5>19</s5>
</fC03>
<fC03 i1="20" i2="X" l="FRE"><s0>Dibenzo-p-dioxine(polychloro)</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>20</s5>
<s6>Dibenzo-«p»-dioxine(polychloro)</s6>
</fC03>
<fC03 i1="21" i2="X" l="FRE"><s0>Chlorpyriphos</s0>
<s2>NK</s2>
<s2>FF</s2>
<s5>21</s5>
</fC03>
<fC03 i1="21" i2="X" l="ENG"><s0>Chlorpyrifos</s0>
<s2>NK</s2>
<s2>FF</s2>
<s5>21</s5>
</fC03>
<fC03 i1="21" i2="X" l="SPA"><s0>Clorpirifos</s0>
<s2>NK</s2>
<s2>FF</s2>
<s5>21</s5>
</fC03>
<fC03 i1="22" i2="X" l="FRE"><s0>Malaoxon</s0>
<s4>INC</s4>
<s5>32</s5>
</fC03>
<fC07 i1="01" i2="X" l="FRE"><s0>Carboxylic ester hydrolases</s0>
<s2>FE</s2>
</fC07>
<fC07 i1="01" i2="X" l="ENG"><s0>Carboxylic ester hydrolases</s0>
<s2>FE</s2>
</fC07>
<fC07 i1="01" i2="X" l="SPA"><s0>Carboxylic ester hydrolases</s0>
<s2>FE</s2>
</fC07>
<fC07 i1="02" i2="X" l="FRE"><s0>Esterases</s0>
<s2>FE</s2>
</fC07>
<fC07 i1="02" i2="X" l="ENG"><s0>Esterases</s0>
<s2>FE</s2>
</fC07>
<fC07 i1="02" i2="X" l="SPA"><s0>Esterases</s0>
<s2>FE</s2>
</fC07>
<fC07 i1="03" i2="X" l="FRE"><s0>Hydrolases</s0>
<s2>FE</s2>
</fC07>
<fC07 i1="03" i2="X" l="ENG"><s0>Hydrolases</s0>
<s2>FE</s2>
</fC07>
<fC07 i1="03" i2="X" l="SPA"><s0>Hydrolases</s0>
<s2>FE</s2>
</fC07>
<fN21><s1>024</s1>
</fN21>
<fN44 i1="01"><s1>OTO</s1>
</fN44>
<fN82><s1>OTO</s1>
</fN82>
</pA>
<pR><fA30 i1="01" i2="1" l="ENG"><s1>Biosensors for Food Safety and Environmental Monitoring. International Meeting</s1>
<s3>Marrakech MAR</s3>
<s4>2003-10-09</s4>
</fA30>
</pR>
</standard>
</inist>
</record>
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