Highly Sensitive Electrochemical Glutamate Microsensors for Food Analysis
Electrochemical microsensors are ideal to measure substances with low concentration in complex environments. The primary excitatory neurotransmitter l-glutamate is present in many foods as a distinctive flavour (enhancer) with a wide concentration range. In comparison to other methods, electrochemic...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2017-08-01
|
| Series: | Proceedings |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2504-3900/1/4/521 |
| _version_ | 1811231961356697600 |
|---|---|
| author | Andreas Weltin Jochen Kieninger Gerald A. Urban |
| author_facet | Andreas Weltin Jochen Kieninger Gerald A. Urban |
| author_sort | Andreas Weltin |
| collection | DOAJ |
| description | Electrochemical microsensors are ideal to measure substances with low concentration in complex environments. The primary excitatory neurotransmitter l-glutamate is present in many foods as a distinctive flavour (enhancer) with a wide concentration range. In comparison to other methods, electrochemical sensors allow the rapid, precise, cost-effective, online measurement without any sample treatment. We developed a disposable electrochemical microsensor platform with multiple integrated, highly sensitive (detection limit <150 nM) and selective enzyme-based glutamate biosensors. We showed both the precise determination of glutamate levels in processed foods with high glutamate content (15–40 mM), e.g., broth, and in foods with low natural concentrations such as different types of cow’s milk (~250 μM). Hereby, we successfully demonstrated the capabilities of electrochemical biosensors in food monitoring, analysis and quality control. |
| first_indexed | 2024-04-12T10:53:55Z |
| format | Article |
| id | doaj.art-fe2b7a4635444fcf8de6164f8b378874 |
| institution | Directory Open Access Journal |
| issn | 2504-3900 |
| language | English |
| last_indexed | 2024-04-12T10:53:55Z |
| publishDate | 2017-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Proceedings |
| spelling | doaj.art-fe2b7a4635444fcf8de6164f8b3788742022-12-22T03:36:08ZengMDPI AGProceedings2504-39002017-08-011452110.3390/proceedings1040521proceedings1040521Highly Sensitive Electrochemical Glutamate Microsensors for Food AnalysisAndreas Weltin0Jochen Kieninger1Gerald A. Urban2Laboratory for Sensors, IMTEK—Department of Microsystems Engineering, University of Freiburg, Freiburg, GermanyLaboratory for Sensors, IMTEK—Department of Microsystems Engineering, University of Freiburg, Freiburg, GermanyLaboratory for Sensors, IMTEK—Department of Microsystems Engineering, University of Freiburg, Freiburg, GermanyElectrochemical microsensors are ideal to measure substances with low concentration in complex environments. The primary excitatory neurotransmitter l-glutamate is present in many foods as a distinctive flavour (enhancer) with a wide concentration range. In comparison to other methods, electrochemical sensors allow the rapid, precise, cost-effective, online measurement without any sample treatment. We developed a disposable electrochemical microsensor platform with multiple integrated, highly sensitive (detection limit <150 nM) and selective enzyme-based glutamate biosensors. We showed both the precise determination of glutamate levels in processed foods with high glutamate content (15–40 mM), e.g., broth, and in foods with low natural concentrations such as different types of cow’s milk (~250 μM). Hereby, we successfully demonstrated the capabilities of electrochemical biosensors in food monitoring, analysis and quality control.https://www.mdpi.com/2504-3900/1/4/521monosodium glutamateneurotransmitterbiosensorenzymefoodmilk |
| spellingShingle | Andreas Weltin Jochen Kieninger Gerald A. Urban Highly Sensitive Electrochemical Glutamate Microsensors for Food Analysis Proceedings monosodium glutamate neurotransmitter biosensor enzyme food milk |
| title | Highly Sensitive Electrochemical Glutamate Microsensors for Food Analysis |
| title_full | Highly Sensitive Electrochemical Glutamate Microsensors for Food Analysis |
| title_fullStr | Highly Sensitive Electrochemical Glutamate Microsensors for Food Analysis |
| title_full_unstemmed | Highly Sensitive Electrochemical Glutamate Microsensors for Food Analysis |
| title_short | Highly Sensitive Electrochemical Glutamate Microsensors for Food Analysis |
| title_sort | highly sensitive electrochemical glutamate microsensors for food analysis |
| topic | monosodium glutamate neurotransmitter biosensor enzyme food milk |
| url | https://www.mdpi.com/2504-3900/1/4/521 |
| work_keys_str_mv | AT andreasweltin highlysensitiveelectrochemicalglutamatemicrosensorsforfoodanalysis AT jochenkieninger highlysensitiveelectrochemicalglutamatemicrosensorsforfoodanalysis AT geraldaurban highlysensitiveelectrochemicalglutamatemicrosensorsforfoodanalysis |